Yamaha psr-k1

SERVICE MANUAL
■ CONTENTS
SPECIFICATION ....................................................................... 3
PANEL LAYOUT ........................................................................ 4
BLOCK DIAGRAM .................................................................... 5
UNIT LAYOUT & WIRING ......................................................... 6
DISASSEMBLY PROCEDURE ................................................. 8
LSI PIN DESCRIPTION .......................................................... 13
IC BLOCK DIAGRAM .............................................................. 16
CIRCUIT BOARDS ................................................................. 18
TEST PROGRAM ................................................................... 23
SAVING BACKUP DATA TO SMARTMEDIA CARD ................ 26
MIDI IMPLEMENTATION CHART ........................................... 27
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PK 001713
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K377 IT '03.07
PSR-K1
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic
service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users,
and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specified. For these reasons, we
advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or
the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and
changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable)
components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause
cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT-
SOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/
flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.
■ WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed.
2
PSR-K1
■ SPECIFICATIONS
Keyboards Effects
61 standard-size keys (C1 - C6), with Touch Response. Reverb: 9 types
Chorus: 4 types
Display Harmony: 26 types
320 x 240 dots backlit graphic LCD
Song
Setup 100 Preset Songs + 5 User Songs +
STANDBY/ON SmartMedia Card Songs
MASTER VOLUME: MIN - MAX Song Clear, Track Clear
MIC VOLUME: MIN - MAX Song Volume
LCD CONTRAST Control
Recording
Panel Controls Song
SONG, VOICE, STYLE, EASY SONG ARRANGER, FILE User Song: 5 Songs
CONTROL, EXECUTE, DICTIONARY, PERFORMANCE Recording Tracks: 1, 2, 3, 4, 5, STYLE
ASSISTANT, PC, LESSON L, LESSON R, METRONOME,
PORTABLE GRAND, KARAOKE, SCORE, EXIT, DEMO, MIDI
FUNCTION, TOUCH, HARMONY, DUAL, SPLIT, TEMPO/ Local On/Off Initial Setup Send External Clock
TAP, [0] - [9], [+], [-], CATEGORY, Dial, ACMP ON/OFF, Keyboard Out Style Out Song Out
SYNC STOP, SYNC START, START/STOP, INTRO/END-
ING/rit., MAIN/AUTO FILL, MIC, TRANSPOSE, REGIS- Auxiliary jacks
TRATION MEMORY (MEMORY, BANK, [1], [2]), SONG PHONES, OUTPUT R,L, DC IN 12V, USB, MIC, SUSTAIN
MEMORY (REC, [1] - [5], [A])
Amplifier
Voice With AC power adaptor (PA-5D): 6W + 6W
114 panel voices + 12 drum kits + 360 XG voices With batteries: 4W + 4W
Polyphony: 32
DUAL
Speakers
SPLIT 12cm x 2 + 3cm x 2
Style Power Consumption (when using PA-5D power adaptor)

135 Preset Styles + 1 SmartMedia Card Style UL/CSA: 22W
Style Control: ACMP ON/OFF, SYNC STOP, CE: 22W
SYNC START, START/STOP, Power Supply
INTRO/ENDING/rit., MAIN/AUTO FILL
Adaptor: Yamaha PA-5C/PA-5D AC power adaptor
Fingering: Multi fingering
Batteries: Six "D" size, R20P (LR20) or equivalent
Style Volume
batteries
Card Slot
Dimensions (W x D x H)
3.3V SmartMediaTM
952 x 389 x 158 mm (37-1/2" x 15-1/3" x 6-1/4")
Education Feature 994 x 389 x 158 mm (with mic holder)
Dictionary (39-1/8" x 15-1/3" x 6-1/4")
Lesson 1-4 Weight
Registration Memory 7.0 kg (15 lbs. 7 oz.)
8 banks x 2 types Supplied Accessories
Function Music Rest
VOLUME: Style Volume, Song Volume SmartMediaTM
OVERALL: Tuning, Split Point, Touch Sensitivity Accessory CD-ROM
MAIN VOICE: Volume, Octave, Pan, Reverb Send Level, Microphone
Chorus Send Level Microphone holder cap (spare)
DUAL VOICE: Volume, Octave, Pan, Reverb Send Level, Owner’s Manual
Chorus Send Level
SPLIT VOICE: Volume, Octave, Pan, Reverb Send Level, Optional Accessories
Chorus Send Level
Headphones: HPE-150
EFFECT: Reverb Type, Chorus Type
AC power adaptor: PA-5C/PA-5D
HARMONY: Harmony Type, Harmony Volume
Footswitch: FC4/FC5
PC: PC mode
Keyboard stand: L-2C
MIDI: Local On/Off, External Clock, Initial Setup
Send, Keyboard Out, Style Out, Song Out
METRONOME: Time Signature, Metronome Volume
SCORE: Quantize
LESSON: LessonTrack (R), Lesson Track (L)
UTILITY: Grade, Demo Cancel
MIC: Microphone Volume,
Microphone Echo
LANGUAGE: Language Select
3
PSR-K1
■ PANEL LAYOUT
Front Panel
Song List Style List Voice List
@7
q w r i !2 !9 @3
t o !3 @0
@5
e y !0 !4 @1 @4
u !1 !5 @2
@6
@8
@9 !6 !7 !8
#7 #8
#0 #2 #3 #4 #5 #6
#1
q [STANDBY/ON] switch !5 [PORTABLE GRAND] button @9 [SYNC STOP] button
w [MIC VOLUME] control !6 [KARAOKE] button #0 [SYNC START] / [ ] button
e [MASTER VOLUME] control !7 [SCORE] button #1 [INTRO/ENDING/rit.] / [ ] button
r [TOUCH] button !8 [EXIT] button #2 [MAIN/AUTO FILL] / [ ] button
t [HARMONY] button !9 [SONG] button #3 [START/STOP] / [ ] button
y [DUAL] button @0 [EASY SONG ARRANGER] button #4 [MIC] button
u [SPLIT] button @1 [STYLE] button #5 [TRANSPOSE] button
i [DEMO] button @2 [VOICE] button #6 [TEMPO/TAP] button
o [LESSON L] (Left) and @3 [FILE CONTROL] button #7 REGISTRATION MEMORY
[LESSON R] (Right) buttons @4 [EXECUTE] button [MEMORY], [BANK], [1], [2] buttons
!0 [DICTIONARY] button @5 Dial #8 SONG MEMORY
!1 [PERFORMANCE ASSISTANT] button @6 CATEGORY buttons [ ] / [ ] [REC], [1] – [5], [A] buttons
!2 [FUNCTION] button @7 Numeric keypad
!3 [PC] button [0] – [9], [+] and [–] buttons
!4 [METRONOME] button @8 [ACMP ON/OFF] / [ ] button
Rear Panel
#9
$0 $1 $2 $3 $4 $5 $6 $7
#9 Card slot (for SmartMedia) $2 [LCD CONTRAST] knob $5 OUTPUT R, L jack

$0 USB terminal $3 Cable holder $6 PHONES jack
$1 SUSTAIN jack $4 MIC jack $7 DC IN 12V jack
4
■ BLOCK DIAGRAM
USB SUSTAIN LCD
CONTRAST PSW
JK801 JK802
BACK LIGHT
SM
JACK
STANDBY/ON
CARD SMART
LCD MEDIA
B1K
DISPLAY
VR801
320 X 240 SW501
CN2
CN801 CN802 CN1 CN501
5P 4P 26P 4P
5P 4P 26P 2P
CN301 CN202
CN801 CN201 CN801 CN103 CN102 4P
+3.3D
DM 5 XD0-3 D0-7 AM +B +B
DC/DC +25V
USB CONVERTER +5D
+3.3D
+3.3D
+5D
ENC 6MHz 12
CPU
IC203
+5D
+5V
8P +3.3V 2 1 BATTERIES
CR301 13 38K0 3 1 +5A REG.
+3.3D REG. 1.5V X 6
CATEGORY IC102
+3.3D
IC301 8MHZ 17 IC111
16 +5A CN101
+3.3D
64P
LCDC IC
+5D
CR201 18 CPLD
+3.3D
+2.5D 52 51 +2.5V +5V
IC801 3 2 2 1 DC IN
IC201 +2.5D REG. REG.
256K
SRAM 60P 48P IC110 IC101 12V
EC901 RESET 4.2V IC
IC202
JK101
36 35 20 28P
CN901 IC102 4 16 VA0-14 COMPARATER 8
3P 1
RXD0
TXD0 23 VD0-7 LOW BATT IC112 +B
3P 5P
CN07 LOW BATT 8P
16.9344 MHz 12 MA0-21

+B
MD0-15
CR101 13
MA/MD
21,22
MICVR
+3.3D
SW
CN601,CN602
CN01,CN06
57 ~ 64 +5A MIC +5A
CN101 18P
CN104 18P
+3.3D
+3.3D
+3.3D
MATRIX MIC VOLUME MIC
PB0-7 SWL01 AMP AMP
PA0-7 13 3
CN401
CN701
CN701
CN401
IC101 8 7 2
ADC IC IC401 IC401 MIC IN
LED 48 ~ 55 128P 64M 32M 16M
DRIVER ROM ROM DRAM AK5355 2
LED 9 A10K
IC106 ,
IC103 IC104 IC105 IC501 VR601 +5A JK401
TA601 ~ TA603
48P 48P 44P 16P
RXD1
TXD1
PROG WAVE AMP

SDO
SDI
PNC PNL PNR 4 2 L
37 6 IC301 8 R OUTPUT
38 40 41
CR701
5MHz 42,43,44 +B JK301
+3.3D
SYSCLK, BCLK, WCLK +5A +5A
14 15 +3.3D
24P
24P
RELAY 2 POWER AMP 15

L
CPU
CN701
CN601
27 DAC LPF 5W X 2 R
IC701 1 L PHONES
PCM1742K 7 2 7 14
CN101
44P 22 2 IC201
IC403 8 6 IC402 7 R 18P
CN603 CN604 CN602 16P 8P JK201
7P 5P 12P
CN5 CN2 CN1
+2.5
61L 61H CN205
5P
CN201 CN203,204 CN202
TW
KEYBARD KEYBARD
CN4
CN3
SWMATRIX SWMATRIX TW TW
(C1~B3) (C4~C6)
TW TW
5P
5P
CN601
CN601
A10K VR601 L R
MASTER
MVR VOLUME WF
WF
KEYBOARD 61KEY (16N)
28CA1-8828102
PSR-K1
5
PSR-K1
■ UNIT LAYOUT & WIRING

MVR PNC 1/2 PNC 2/2 PNR 1/2 DM PNR 2/2
Speaker (Tweeter) L 12 17 15 1 8 16 6 Speaker (Tweeter) R
9 10
19 19
TW TW
Upper Case Assembly 11 13 22 18 2 3 4 14 7 5
PSW MICVR AM PNL JACK ENC SM

LCD Unit
RELAY
Speaker (Woofer) L 20 24 23 25 Lower Case Assembly 21 Speaker (Woofer) R
Keyboard Assembly 26
61L 61H
6
PSR-K1
CONNECTOR
No. REF. No. DESTINATION
ASSEMBLY *8
q 370 DM-CN101 Installation (Pin18) *7 AM-CN104 Installation (Pin18) *7 - WB105000
w - DM-CN201 Installation (Pin14) *7 LCD Unit Connected *7 - -
e 420 DM-CN202 Installation (Pin4) *7 JACK-CN802 Installation (Pin4) *7 - WA836000
r 430 DM-CN301 Installation (Pin5) *7 JACK-CN801 Installation (Pin5) *7 - WA836100
t 390 DM-CN601 Installation (Pin16) *7 PNR 1/2-CN06 Installation (Pin16) *7 - WB104900
y 380 DM-CN602 Installation (Pin14) *7 PNL-CN01 Installation (Pin14) *7 - WB104800
u 410 DM-CN701 Installation (Pin24) *7 RELAY-CN601 Installation (Pin24) *7 - WB105100
i 400 DM-CN801 Installation (Pin26) *7 SM-CN1 Installation (Pin26) *7 - WB105200
o WH201 AM-CN201 Installation (Pin2) *1 TW (L) Manual Soldering *4 - (V873470)
!0 WH202 AM-CN202 Installation (Pin2) *1 TW (R) Manual Soldering *4 - (WB09240)
!1 WH501 AM-CN102 Installation (Pin4) *1 PSW-CN501 Dip Soldering (Pin4) *1 - (WB09330)
!2 WH601 AM-CN205 Installation (Pin5) *1 MVR-CN601 Dip Soldering (Pin5) *1 - (WB09400)
!3 WH701 AM-CN401 Installation (Pin3) *1 MICVR-CN701 Dip Soldering (Pin3) *1 - (WB09310)
!4 WH901 PNR 1/2-CN07 Installation (Pin3) *1 ENC-CN901 Dip Soldering (Pin3) *1 - (WB09270)
!5 WH001 PNC 1/2-CN04 Dip Soldering (Pin4) *1 PNC 2/2-CN05 Dip Soldering (Pin4) *1 PNC (WB09360)
!6 WH002 PNR 1/2-CN08 Dip Soldering (Pin7) *1 PNR 2/2-CN09 Dip Soldering (Pin7) *1 PNR (WB09670)
!7 WH003 PNL-CN02 Dip Soldering (Pin11) *1 PNC 1/2-CN03 Installation (Pin11) *1 PNL (WB09450)
!8 L40 AM-CN103 Installation (Pin2) *1 LCD Unit Manual Soldering *4 BL (WB09210)
!9 - Speaker (Tweeter) Connected - TW Manual Soldering *4 - -
@0 C220 AM-CN203 Installation (Pin2) *3 Speaker (Woofer) Manual Soldering *6 SP-L (V873540)
@1 C230 AM-CN204 Installation (Pin2) *2 Speaker (Woofer) Manual Soldering *5 SP-R (V873550)
Red
Contact Spring + Wire
@2 C130 AM-CN101 Installation (Pin3) *2 Manual Soldering Black
BAT (V873560)
Contact Spring - Wire
@3 C30 RELAY-CN602 Installation (Pin12) *1 61H-CN1 Installation (Pin12) *1 MK61-A (V873900)
@4 C40 REALY-CN603 Installation (Pin7) *1 61L-CN5 Installation (Pin7) *1 MK61-B (V873910)
@5 C50 REALY-CN604 Installation (Pin5) *1 61H-CN2 Installation (Pin5) *1 MK61-C (V873920)
@6 150c 61L-CN4 Installation (Pin12) *1 61H-CN3 Installation (Pin12) *1 Relay V8696200
DIRECTION
*1: Edge mark is adjusted to Pin 1 mark. ( mark) *5: Red wire is connected to (+) terminal.
*2: Red wire is adjusted to Pin 1 mark. ( mark) *6: Brown wire is connected to (+) terminal.
*3: Brown wire is adjusted to Pin 1 mark. ( mark) *7: The conductor of a cable and the point of contact of a connector are untited.
*4: Edge mark is connected to (+) terminal. *8: "( )" are not available as spare parts.
7
PSR-K1
■ DISASSEMBLY PROCEDURE
1. Lower Case Assembly Caution: Be sure to attach the removed filament tape
(Time Required: about 2 min) just as it was before removal.
1-1 Remove the battery cover assembly. (Fig. 1)
1-2 Remove the nine (9) screws marked [140] and the
three (3) screws marked [150]. The lower case assembly
can then be removed. (Fig. 1)
2. Removing the Spring Terminal (+), (-) and

Spring Terminal
A. Spring Terminal (+), (-) B. Spring Terminal
2-1 Remove the lower case assembly. (See procedure 1.) 2-1 Remove the lower case assembly. (See procedure 1.)
2-2 Remove the battery harness soldered to the spring 2-2 Remove spring terminal hooks (two at each place)
terminal (+) and (–). (Fig. 2) and pull out the spring terminal. (Fig. 2-1)
2-3 Remove the hooks (two at each place) and pull out
the spring terminal (+) and (–). (Fig. 2-1)(Fig. 2-2)
[140]
Battery Cover Lower Case Assembly
[140] [140]
[150]
[140]: Bind Head Tapping Screw-B 3.0x12 MFZN2Y (VE683000)
[150]: Bind Head Tapping Screw-B 3.0x30 MFZN2Y (V7213700)
(Fig. 1)
Battery Case
Spring Terminal (-) Spring Terminals Spring Terminal (+)

(Fig. 2)
Hook Hook Hook
Spring Terminal (-)

Hook Spring Terminal Spring Terminal (+)
(Fig. 2-1) (Fig. 2-2)
8
PSR-K1
3. TW Circuit Boards & Speakers (3 cm) 8. MVR Circuit Board (Time Required: about 3 min)
(Time Required: about 3 min) 8-1 Remove the lower case assembly. (See procedure 1.)
3-1 Remove the lower case assembly. (See procedure 1.) 8-2 Remove the MASTER VOLUME knob on the
3-2 Remove the two (2) screws marked [130a]. The TW control panel.
circuit board & speaker can then be removed. (Fig. 3) 8-3 Remove the three (3) screws marked [130f]. The
* The right and left TW circuit boards & speakers can MVR circuit board can then be removed. (Fig. 3)
be removed in the same manner.
9. MICVR Circuit Board
4. DM Circuit Board (Time Required: about 3 min) (Time Required: about 3 min)
4-2 Remove the five (5) screws marked [130b]. The DM 9-2 Remove the MIC VOLUME knob on the control panel.
circuit board can then be removed. (Fig. 3) 9-3 Remove the three (3) screws marked [130g]. The
MICVR circuit board can then be removed. (Fig. 3)
5. AM Circuit Board (Time Required: about 3 min)
5-1 Remove the lower case assembly. (See procedure 1.) 10. JACK Circuit Board (Time Required: about 3 min)
5-2 Remove the two (2) screws marked [540a] and the 10-1 Remove the lower case assembly. (See procedure 1.)
screw marked [550], the nine (9) screws marked 10-2 Remove the four (4) screws marked [130h]. The JACK
[130c] . The AM circuit board can then be removed. circuit board can then be removed. (Fig. 3)
(Fig. 3)
11. SM Circuit Board (Time Required: about 3 min)
6. PNC 2/2 Circuit Board 11-1 Remove the lower case assembly. (See procedure 1.)
(Time Required: about 3 min) 11-2 Remove the DM circuit board. (See procedure 4.)
6-1 Remove the lower case assembly. (See procedure 1.) 11-3 Remove the two (2) screws marked [540b]. The SM
6-2 Remove the six (6) screws marked [130d]. The PNC circuit board can then be removed. (Fig. 3)
2/2 circuit board can then be removed. (Fig. 3)
7. PSW Circuit Board (Time Required: about 3 min)

7-1 Remove the lower case assembly. (See procedure 1.)
7-2 Remove the two (2) screws marked [130e]. The PSW
circuit board can then be removed. (Fig. 3)
MVR AM PNC 2/2 PNR

DM
[130f] [130c] [130d] [130b]
TW TW
[130a] [130a]
Speaker (L) [130e] [130c] [130g] x3 [130h] Speaker (R)

3cm SM 3cm
PSW [540a] MICVR [550] JACK [540b]
[130]: Bind Head Tapping Screw-B 3.0x8 MFZN2Y (EP600250)

[540]: Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190)
[550]: Bind Head Screw 3.0x8 MFZN2Y (VD976600)
(Fig. 3)
9
PSR-K1
12. PNR 2/2 Circuit Board 15. PNL Circuit Boards

(Time Required: about 3 min) (Time Required: about 4 min)
12-2 Remove the eight (8) screws marked [130i]. The PNR 15-2 Remove the AM circuit board. (See procedure 5.)
2/2 circuit board can then be removed. (Fig. 4) 15-3 Remove the six (6) screws marked [130l]. The PNL
circuit board can then be removed. (Fig. 4)
13. PNR1/2 Circuit Board
(Time Required: about 5 min) 16. PNC1/2 Circuit Boards
13-1 Remove the lower case assembly. (See procedure 1.) (Time Required: about 4 min)
13-2 Remove the DM circuit board. (See procedure 4.) 16-1 Remove the lower case assembly. (See procedure 1.)
13-3 Remove the SM circuit board. (See procedure 11.) 16-2 Remove the AM circuit board. (See procedure 5.)
13-4 Remove the nine (9) screws marked [130j]. The PNR 16-3 Remove the eight (8) screws marked [130m]. The
1/2 circuit board can then be removed. (Fig. 4) PNC1/2 circuit board can then be removed. (Fig. 4)
14. ENC Circuit Board 17. LCD Unit (Time Required: about 3 min)
(Time Required: about 4 min) 17-1 Remove the lower case assembly. (See procedure 1.)
14-1 Remove the lower case assembly. (See procedure 1.) 17-2 Remove the four (4) screws marked [130n]. The LCD
14-2 Remove the DM circuit board. (See procedure 4.) unit can then be removed. (Fig. 4)
14-3 Remove the CATEGORY knob from the control
panel side.
14-4 Remove the three (3) screws marked [130k]. The
ENC circuit board can then be removed. (Fig. 4)
PNC 1/2 PNR 2/2

[130m] [130i]
[130j]
[130l] [130n] [130j] [130k] x3

PNL LCD unit PNR 1/2 ENC

(Fig. 4)
10
PSR-K1
18. RELAY Circuit Board 20. Keybaord Assembly

(Time Required: about 3 min) 20-1Remove the lower case assembly. (See procedure 1.)
18-1 Remove the lower case assembly. (See procedure 1.) 20-2The black and white keys are arranged as a set of
18-2 Remove the four (4) screws marked [130o]. The RELAY one octave unit from the left side. There are 5 sets
circuit board can then be removed. (Fig. 5) in total. Remove the four (4) screws marked [200a].
Then, remove the keyboard assembly. (Fig.5)
19. Speakers (12 cm) At this time, note that there are two (2) hooks behind
(Time Required: about 3 min) the black keys. (Photo. 1)
19-1 Remove the lower case assembly. (See procedure 1.) Push the hooks in and slightly lift. Slide the keyboard
19-2 Remove the four (4) screws marked [C200]. The speaker assembly towards you to unhook it, and then, lift it.
can then be removed. (Fig. 5)
20-3To remove the C6 white key, remove the screw marked
* The right and left speaker can be removed in the
same manner. [200b], push the hook in behind the key, slightly lift it,
slide it towards you to unhook, and then lift it. (Fig. 5)
RELAY
[130o]
Speaker (L) Speaker (R)
[C200] [C200]
C1 B3 C4 C6
[200a] [200a] [200a] [200a] [200a] [200b]

[200]: Bind Head Tapping Screw-P 3.0x20 MFZN2 (VT069800)
[C200]: Bind Head Tapping Screw-B 4.0x10 MFZN2Y (EP640130)
(Fig. 5)
Keys
Hook
(Photo. 1)
11
PSR-K1
21. Rubber Contact

21-1 Remove the lower case assembly. (See procedure 1.)
21-2 Remove the keyboard assembly corresponding to
the rubber contact to remove. (See procedure 20.)
21-3 Remove the rubber contact. (Photo. 2)
Rubber Contact
(Photo. 2)
22. 61L Circuit Board (Time Required: about 5 min) 23. 61H Circuit Board (Time Required: about 5 min)
22-2 Remove the keys C1 to B3. (See procedure 20.) 23-2 Remove the keys C4 to C6. (See procedure 20.)
22-3 Remove the four (4) screws marked [180a] and the 23-3 Remove the three (3) screws marked [180b] and the
eight (8) screws marked [190a]. The 61L circuit five (5) screws marked [190b]. The 61H circuit
board can then be removed. (Fig. 5, 6) board can then be removed. (Fig. 5, 6)
[180a] [180b]
61L 61H
[190a] [190b]
[190]: Bind Head Tapping Screw-P 3.0x12 MFZNBL (VZ313100)
(Fig. 6)
24. Microphone Holder

24-1 The microphone holder can be installed on either side
of the instrument. If you remove the holder, put the
spare microphone holder cap in the hole. (Fig. 7)
Microphone
holder
Microphone holder cap

(Fig. 7)
12
PSR-K1
■ LSI PIN DESCRIPTION

YMW767-V (X3271A00) CPU & XG Lite Generator DM: IC101
PIN NAME I/O FUNCTION PIN NAME I/O FUNCTION
No. No.
1 VSS - Ground 65 VSS - Ground
2 TESTN - TEST Input (connect to a IOVDD) 66 IOVDD - Power Supply (+3.3V)
3 PLLBPN - PLL Bypass Select 67 LBN/LWRN/PF6 O Memory Low Byte Enable
4 PLLVDD - Power Supply for PLL 68 UBN/UWRN/PF7 O Memory Upper Byte Enable
5 CIN - Capacitor Connect Terminal for PLL 69 RDN/PF4 O Memory Read Enable
6 PLLVSS - Ground for PLL 70 MD00 I/O Memory Data Bus 0
7 TRSTN I 71 MD08 I/O Memory Data Bus 8
8 TMS I 72 MD01 I/O Memory Data Bus 1
JTAG Input
9 TCK I 73 MD09 I/O Memory Data Bus 9
10 TDI I 74 MD02 I/O Memory Data Bus 2
11 TDO O JTAG Output 75 MD10 I/O Memory Data Bus 10
12 XI I Quartz Cristal Input 76 MD03 I/O Memory Data Bus 3
13 XO O Quartz Cristal Output 77 VSS - Ground
14 VSS - Ground 78 MD11 I/O Memory Data Bus 11
15 VDD - Power Supply (+2.5V) 79 MD04 I/O Memory Data Bus 4
16 ICN - Hardware Reset 80 MD12 I/O Memory Data Bus 12
17 ECSN - CPU I/F Chip Select 81 MD05 I/O Memory Data Bus 5
18 EWRN/PD5 - CPU I/F Write Enable 82 MD13 I/O Memory Data Bus 13
19 ERDN/PD4 - CPU I/F Read Enable 83 MD06 I/O Memory Data Bus 6
20 EA3/PD3 I CPU I/F Address Bus 3 84 MD14 I/O Memory Data Bus 14
23 EA0/PD0 I CPU I/F Address Bus 0 87 WRN/PF5 O Memory Write Enable
24 IOVDD - Power Supply (+3.3V) 88 VSS - Ground
25 ED0/PC0 I/O CPU I/F Data Bus 0 89 VDD - Power Supply (+2.5V)
26 ED1/PC1 I/O CPU I/F Data Bus 1 90 IOVDD - Power Supply (+3.3V)
27 ED2/PC2 I/O CPU I/F Data Bus 2 91 MA17 O Memory Address Bus 17
33 VSS - Ground 97 MA11 O Memory Address Bus 11
34 IRQ0N/PH0 I Interrupt Input 98 MA10 O Memory Address Bus 10
35 TxD0 O Serial Output 0 99 MA09 O Memory Address Bus 9
36 RxD0 I Serial Input 0 100 MA08 O Memory Address Bus 8
37 TxD1/PG2 O Serial Output 1 101 MA07 O Memory Address Bus 7
38 RxD1/PH1 I Serial Input 1 102 MA06 O Memory Address Bus 6
39 SCLK1/PH2 I Sync Clock Input 103 MA05 O Memory Address Bus 5
40 SD0 O Serial Output 104 VSS - Ground
41 SDI/PH3 I Serial Input 105 MA04 O Memory Address Bus 4
42 BCLK O Bit Clock Output 106 MA03 O Memory Address Bus 3
43 WCLK/SY0 O Word Clock Output 107 MA02 O Memory Address Bus 2
44 SYSCLK/PG3 O Clock Output 108 MA01 O Memory Address Bus 1
45 VSS - Ground 109 CS0N/PG0 O Memory Chip Select 0
46 VDD - Power Supply (+2.5V) 110 MA18 O Memory Address Bus 18
47 IOVDD - Power Supply (+3.3V) 111 MA19 O Memory Address Bus 19
48 PA0 I/O 112 MA21/PF1 O Memory Address Bus 21
50 PA2 I/O 114 MA20 O Memory Address Bus 20
I/O Port
52 PA4 I/O 116 CS1N/PG1 O Memory Chip Select 1
54 PA6 I/O 118 VSS - Ground
55 PA7 I/O 119 VDD - Power Supply (+2.5V)
56 VSS - Ground 120 IOVDD - Power Supply (+3.3V)
57 PB0 I/O 121 CS2N/PE0 O Memory Chip Select 2
59 PB2 I/O 123 CS4N/CASN/PE2 O Memory Chip Select 4
I/O Port
61 PB4 I/O 125 CS50RDN/PE4 O Memory Read Enable
62 PB5 I/O 126 CS51WRN/PE5 O
63 PB6 I/O 127 CS52WRN/PE6 O Memory Write Enable
64 PB7/SYI I/O 128 CS53WRN/RASN/PE7 O
13
PSR-K1
M4A3-32/32-10VC48 (X3831A00) CPU DM: IC801

No. No.
1 CMD8 I/O Memory Data Input/Output 25 ALE O Address Latch Enable
2 CMD9 I/O Memory Data Input/Output 26 /CE O Chip Enable
3 CMD10 I/O Memory Data Input/Output 27 CLE O Command Latch Enable
4 NC - No Connect 28 NC - No Connect
5 /CRD I Read Strobe 29 /INST I Insert
7 GND Ground 31 GND Ground
8 NC No Connect 32 NC - No Connect
9 A I/O Memory Address Bus 33 D0 I/O Data Bus
10 B I/O Memory Address Bus 34 D1 I/O Data Bus
11 C I/O Memory Address Bus 35 D2 I/O Data Bus
12 /G2 I/O Chip Select 36 D3 I/O Data Bus
13 /G1 I/O Memory Address Bus 37 D4 I/O Data Bus
14 SYSCLK I System Clock Input 38 D5 I/O Data Bus
15 /CWE I Write Strobe 39 D6 I/O Data Bus
16 /IC I Initial Clear 40 D7 I/O Data Bus
17 VCC Supply Voltage 41 VCC Supply Voltage
19 GND Ground 43 GND Ground
20 R//B I Ready/Busy 44 CMD11 I/O Memory Data Input/Output
21 PROT I Protect 45 CMD12 I/O Memory Data Input/Output
22 /WP O Write Protect 46 CMD13 I/O Memory Data Input/Output
23 /WE O Write Enable 47 CMD14 I/O Memory Data Input/Output
24 /RE O Read Enable 48 CMD15 I/O Memory Data Input/Output
S1D13305F00B100 (XQ595A00) LCDC (LCD Controller) DM: IC201

No. No.
1 VA5 O 31 XD2 O
2 VA4 O 32 XD1 O X driver data bus
3 VA3 O 33 XD0 O
VRAM address bus
4 VA2 O 34 XECL O X driver enable chain clock
5 VA1 O 35 XSCL O X driver shift clock
6 VA0 O 36 VSS Ground
7 VR/W O VRAM write strobe 37 LP O Latch pulse
8 /VCE O VRAM chip enable 38 WF O Frame signal
9 NC 39 YDIS O LCD power down
10 /RES I Reset 40 YD O Scan start pulse
11 NC 41 YSCL O Scan shift clock
12 NC 42 VD7 I/O
13 /RD I 80: Read strobe, 68: E clock 43 VD6 I/O
14 /WR I 80: Write strobe, 68: Read/Write 44 VD5 I/O
15 SEL2 I 45 VD4 I/O
CPU 80/68 bus select VRAM data bus
16 SEL1 I 46 VD3 I/O
17 OSC1 I Clock 47 VD2 I/O
18 OSC2 O 48 VD1 I/O
19 /CS I Chip select 49 VD0 I/O
20 A0 I Data bus signal discrimination 50 VA15 O
21 VDD Power supply 51 VA14 O
22 D0 I/O 52 VA13 O
23 D1 I/O 53 VA12 O
24 D2 I/O 54 VA11 O
VRAM address bus
25 D3 I/O 55 VA10 O
Data bus
26 D4 I/O 56 VA9 O
27 D5 I/O 57 VA8 O
28 D6 I/O 58 VA7 O
29 D7 I/O 59 VA6 O
30 XD3 O X driver data bus 60 NC
14
PSR-K1
M38K07M4L-301HP (X3921200) USB CPU DM: IC301

No. No.
1 P12/DQ2/AN2 I/O 33 P26 I/O
Port P2
2 P13/DQ3/AN3 I/O 34 P27 I/O
3 P14/DQ4/AN4 I/O 35 P50/INT0 I/O
Port P1
4 P15/DQ5/AN5 I/O 36 P51/CNTR0 I/O
5 P16/DQ6/AN6 I/O 37 P52/IN1 I/O
6 P17/DQ7/AN7 I/O 38 P53 I/O
Port P5
7 CNVSS - Chip Mode Control Terminal 39 P54 I/O
8 /RESET I Reset 40 P55 I/O
9 VCCE - Analog Power Supply 41 P56 I/O
10 VREF I Standard Voltage Input 42 P57 I/O
11 VSS - Ground 43 P00 I/O
12 XIN I Clock Input 44 P01 I/O
13 XOUT O Clock Output 45 P02 I/O
14 VCC - Analog Power Supply (+3.0 - 5.25V) 46 P03 I/O
Port P0
15 CNVSS2 - Chip Mode Control Terminal 47 P04 I/O
16 P60(LED0) I/O 48 P05 I/O
17 P61(LED1) I/O 49 P06 I/O
Port P6
18 P62(LED2) I/O 50 P07 I/O
19 P63(LED3) I/O 51 P40/EXDREQ/RXD I/O
20 PVSS - Analog Ground 52 P41/EXDACK/TXD I/O
Port P4
21 PVCC - Analog Power Supply 53 P42/EXTC/SCLK I/O
22 DVCC - Analog Power Supply (+3.0 - 5.25V) 54 P43/EXA1/SRDY I/O
23 USBREF - USB Port Standard Power Supply 55 P30 I/O
24 TrON O USB Standard Voltage Output 56 P31 I/O
25 D0+ I/O USB Standard Voltage Upstreem 57 P32 I/O
26 D0- I/O USB Standard Voltage Upstreem 58 P33/EXINT I/O
Port P3
27 P20 I/O 59 P34/EXCS I/O
28 P21 I/O 60 P35/EXWR I/O
29 P22 I/O 61 P36/EXRD I/O
Port P2
30 P23 I/O 62 P37/EXAO I/O
31 P24 I/O 63 P10/DQ0/AN0 I/O
Port P1
32 P25 I/O 64 P11/DQ1/AN1 I/O
UPD789022GB-A15-8E (XZ560100) CPU DM: IC701

PIN PIN
NAME I/O FUNCTION NAME I/O FUNCTION
NO. NO.
1 P12 I/O 23 P32/INTP2/CPT2 I/O Port 3/External interrupt input/Capture edge input
2 P11 I/O Port 1 24 P31/INTP1 I/O
Port 3/External interrupt input
3 P10 I/O 25 P30/INTP0 I/O
4 P47/KR7 I/O 26 P22/RXD/SI0 I/O Port 2/Asynchronous serial interface serial data input/Serial interface serial data input
5 P46/KR6 I/O 27 P21/TXD/SO0 I/O Port 2/Asynchronous serial interface serial data output/Serial interface serial data output
6 P45/KR5 I/O 28 P20/ASCK//SCK0 I/O Port 2/Asynchronous serial interface serial clock input/Serial interface serial clock
7 P44/KR4 I/O 29 P07 I/O
Port 4/Key return signal detection input
8 P43/KR3 I/O 30 P06 I/O
9 P42/KR2 I/O 31 P05 I/O
10 P41/KR1 I/O 32 P04 I/O
Port 0
11 P40/KR0 I/O 33 P03 I/O
12 NC 34 P02 I/O
13 IC Internally connected (N.C.) 35 P01 I/O
14 X2 36 P00 I/O
Clock
15 X1 I 37 NC
16 VSS0 Ground 38 VDD1 Power supply
17 VDD0 Power supply 39 VSS1 Ground
18 /RESET I System reset 40 P17 I/O
19 P53 I/O 41 P16 I/O
Port 5
20 P52 I/O 42 P15 I/O Port 1
21 P51/TO2 I/O Port 5/16-bit timer output 43 P14 I/O
22 P50/TI0/TO0 I/O Port 5/External count clock input to 8-bit timer/8-bit timer output 44 P13 I/O
15
PSR-K1
■ IC BLOCK DIAGRAM
M5233FP (XI577A00) UPC4572G2-T1 (XF634A00) UPC4572HA (XF633A00)
Comparator Dual Operational Amplifier Dual Opaerational Amplifier
DM: IC112 DM: IC402 AM: IC301, 401
Vo1 1 +V 8 Vcc Output A 1 +V 8

+DC Voltage
Supply
Inverting
+
Vin1- 2 7 Vo2 2 7 Output B A B
- + Input A - +
Vin1+ 3 6 Vin2- Non-Inverting 3 6
Inverting
+ - Input A + - Input B
Non-Inverting 1 2 3 4 5 6 7 8
GND 4 -V 5 Vin2+ -DC Voltage Supply 4 -V 5
Input B OUT IN +IN V +IN IN OUT +V
A A A B B B
HD74LV32AFPEL (IS003200) AK5355VT (X3781A00)

Quad 2 Input OR ADC
DM: IC107 DM: IC501
SEL DIF
1A 1 14 VCC VCOM 1 16 TST1
1B 2 13 4B RIN 2 15 NC LIN
1Y 3 12 4A LIN 3 14 DIF LRCK

Audio I/F
ADC HPF BCLK
Controller
2A 4 11 4Y VSS 4 13 PDN SDTO
RIN
2B 5 10 3B VA 5 12 BCLK
2Y 6 9 3A VD 6 11 MCLK VD
7 GND 8 3Y SEL 7 10 LRCK VCOM

VA PDN
NC 8 9 SDTO VSS Clock Divider
MCLK
NJM2360AM (X0200A00) PCM1742KE/2K (X3538A00)

DC/DC Converter DAC
DM: IC203 DM: IC403
BCK 1
Cs 1 8 CD BCK 1 16 SCK
Audio
Q2 Q S Output Amp and 7 VOUTL
DATA 2 15 ML LRCK 3 Serial DAC
Low-Pass Filter
Port
Q1 R 4x/8x
LRCK 3 14 MC DATA 2 Oversampling Enhanced
Es 2 7 SI Digital Filter Multilevel
with Delta-Sigma 10 VCOM
Ipk DGND 4 13 MD
Function Modulator
ML 15
CT OSC Controller
VDD 5 12 ZEROL/NA Serial
CT 3 Output Amp and
MC 14 Control DAC
COMP 6 Low-Pass Filter 8 VOUTR
VREF V+ VCC 6 11 ZEROR/ZEROA
Port
1.25V MD 13
VOUTL 7 10 VCOM System Clock
4 5 System Clock
GND INVIN VOUTR 8 9 AGND SCK 16
Manager
Zero Detect Power Supply
12 11 5 4 6 9
ZEROL ZEROR VDD DGND VCC AGND
16
PSR-K1
HD74LV04AFPEL (IS000400) LA4705NA (XQ619A00)

Hex Inverter Power Amplifier
DM: IC106, 601 AM: IC201
1A 1 14 VDD
1Y 2 13 6A
2A 3 12 6Y
2Y 4 11 5A
3A 5 10 5Y
6 9
3Y 4A
Vss 7 8 4Y
17
PSR-K1
■ CIRCUIT BOARDS
CONTENTS
SM Circuit Board (X4145A0) ..................................................................... 18 page
JACK Circuit Board (X3869C0) ..................................................................... 18 page
RELAY Circuit Board (X3871C0) ..................................................................... 18 page
DM Circuit Board (X3870C0) ..................................................................... 19 page
TW Circuit Board (X3869C0) ..................................................................... 20 page
AM Circuit Board (X3869C0) ..................................................................... 20 page
MICVR Circuit Board (X3869C0) ..................................................................... 20 page
MVR Circuit Board (X3869C0) ..................................................................... 20 page
PSW Circuit Board (X3869C0) ..................................................................... 20 page
PNL Circuit Board (X3871C0) ..................................................................... 21 page
PNC 1/2 Circuit Board (X3871C0) ..................................................................... 21 page
PNC 2/2 Circuit Board (X3871C0) ..................................................................... 21 page
PNR 1/2 Circuit Board (X3871C0) ..................................................................... 22 page
ENC Circuit Board (X3869C0) ..................................................................... 22 page
PNR 2/2 Circuit Board (X3871C0) ..................................................................... 22 page
SM Circuit Board
to DM-CN801
CARD
Component side Pattern side
JACK Circuit Board RELAY Circuit Board

to DM-CN701
USB
to DM-CN301
SUSTAIN
to DM-CN202 to 61L-CN5 to 61H-CN2 to 61H-CN1

Component side
LCD CONTRAST
SM: 2NA-WB09110
RELAY: 2NA-WA81270 1
Component side JACK: 2NA-WA74210 1

18
PSR-K1
DM Circuit Board
to PNR1/2-CN06 to RELAY-CN601 OPEN to JACK-CN801
to LCD
to JACK-CN802
to PNL-CN01
to AM-CN104
to SM-CN1 Component side
Pattern side
DM: 2NA-WA74290 1
19
PSR-K1
TW Circuit Board to TWEETER R to TWEETER L
AM Circuit Board OUTPUT DC-IN

MIC L R PHONES 10-12V to BATTERY
to BACK LIGHT
to WOOFER L
to WOOFER R
to DM-CN101
Component side
MICVR Circuit Board
MVR Circuit Board PSW Circuit Board
STANDBY/ON
MIC VOLUME
Component side
MASTER VOLUME Component side
Component side
TW: 2NA-WA74210 1
AM: 2NA-WA74210 1
MICVR: 2NA-WA74210 1
MVR: 2NA-WA74210 1
20 PSW: 2NA-WA74210 1
PSR-K1
PNL Circuit Board

to DM-CN602
FUNCTION DEMO TOUCH
PC R L HARMONY
METRO-
NOME DICTIONARY DUAL
PORTABLE
GRAND EASY PLAY SPLIT
Component side
PNC 1/2 Circuit Board
TEMPO/ START/ INTRO/ SYNC SYNC ACMP

TAP TRANSPOSE MIC STOP EDNING/rlt. START STOP ON/OFF
START/ MAIN/
STOP AUTO FILL
Component side
PNC 2/2 Circuit Board
EXIT SCORE KARAOKE
Component side
PNL: 2NA-WA81270 1
PNC 1/2: 2NA-WA81270 1
PNC 2/2: 2NA-WA81270 1
21
PSR-K1
PNR 1/2 Circuit Board

to DM-CN601
FILE
3 2 1 CONTROL SONG
EASY SONG
6 5 4 EXECUTE ARRANGER
9 8 7 STYLE
+ 0 - VOICE
CATEGORY
Component side
ENC Circuit Board
CATEGORY
PNR 2/2 Component side
Circuit Board
A 5 4 3 2 1 2 MEMORY
REC 1 BANK
Component side
PNR 1/2: 2NA-WA81270 1
ENC: 2NA-WA81270 1
22 PNR 2/2: 2NA-WA81270 1

PSR-K1
■ TEST PROGRAM
A.PREPARATION
1. PA-5D (AC adaptor) is used. (PA-51 are utilizable)
2. The volume is usually moved to the use position when no volume change is required.
3. Measuring instruments: Frequency counter, Level meter (with a JIS-C filter)
Note: Use a stereo plug and connect the 33 ohm load to the [PHONES] jack.
4. Jigs: PC, Foot switch (FC-5), MIDI cabel
B.HOW TO ENTER THE TEST PROGRAM C2# G2#
While pressing the C2#, F2 and G2# keys, turn on the [STAND BY / ON] switch.
C.PROCEEDING THROUGH THE TEST PROGRAM

1. When the test program is started, " " appears on the LCD. F2
2. Select the test program item to be executed by pressing the [+] or [-] button.
3. Press the [START / STOP] button to execute testing.
• When the test result is OK, press the [START / STOP] button to return to the test item name on display.
Proceed to the next test by pressing the [-] or [+] button.
• When the test result is OK, an asterisk (*) is added in front of its item name on display.
• When the test result is NG, press the lowest (leftmost) white key on the keyboard to return to the test item name on display.
D.TEST PROGRAM LIST

No. LCD display Test Function and Judgment Criteria
1 001 Version Displays ROM version
ROM (Program, Wave, USB) version is displayed on the LCD.
2 002 Rom Chk1 Checks the ROMs
The test result appears on the LCD.
3 003 Ram Chk1 Checks all the RAM
4 006 WRomChk1 Checks all the Wave ROM
5 007 Card Chk Check the SmartMedia
The SmartMedia which turned ON write-protection is inserted.
6 011 TG1 Chk Outputs the sine wave by changing the channels in sequence from C2 to G4.
Neither abnormal sound nor noise is allowed.
After auto-scaling is finished, individual keys can be played. (If playing two or more keys
simulataneously, the first pressed key has priority to make a sound.)
7 013 Pit Chk Connect the frequency counter to the [PHONES] jack.
Check that the 440.0 Hz +/- 1.76 Hz signal is output.
8 014 Output R Connect the level meter to the L and R [PHONES] jacks.
Set the [MASTER VOLUME] at maximum.
The application load is 33 ohm.
Phones L: less than -50.0 dBm
Phones R: -7.0 dBm +/-2 dB
Connect the level meter to the L and R [OUTPUT] jacks.
The application load is 10 k ohm.
Phones L: less than -45.0 dBm
Phones R: -4.0 dBm +/-2 dB
23
PSR-K1

9 015 Output L Connect the level meter to the L and R [PHONES] jacks.
Phones L: -7.0 dBm +/-2 dB
Phones R: less than -50.0 dBm
Connect the level meter to the L and R [OUTPUT] jacks.
Phones L: -4.0 dBm +/-2 dB
Phones R: less than -45.0 dBm
10 019 Noise Connect the level meter to the [PHONES] jack.
PHONES R/L: less than -80.0 dBm
Connect the level meter to the [OUTPUT] jack.
PHONES R/L: less than -80.0 dBm
11 020 SW Chk Check switches on panel.
Press the switches in order according to the display on the LCD (See below).
Pressing the switch produces a specified sound. When the last switch is pressed, "SW OK"
appears on the LCD.
If the test is canceled half way press the lowest (leftmost) key on the keyboard.
No. SW Name Display Note No. No. SW Name Display Note No.
1 DIAL UP *1 dIUP C2 30 Tenkey 7 Tenkey 7 F4
2 DIAL DOWN *1 dIDW C#2 31 Tenkey 8 Tenkey 8 F#4
3 TOUCH Touch D2 32 Tenkey 9 Tenkey 9 G4
4 HARMONY harmony D#2 33 Tenkey - Tenkey - G#4
5 DUAL Dual E2 34 Tenkey 0 Tenkey 0 A4
6 SPLIT Split F2 35 Tenkey + Tenkey + A#4
7 DEMO Demo F#2 36 ACMP ACMP B4
8 LESSON L Lesson L G2 37 SYNC. STOP S.Stop C5
9 LESSON R Lesson R G#2 38 SYNC. START S.Start C#5
10 DICTIONARY Dict A2 39 INTRO/ENDING Intro D5
11 EASY PLAY Easy A#2 40 MAIN/AUTO FILL Main/Fil D#5
12 FUNCTION Function B2 41 START/STOP Str/Stp E5
13 PC PC C3 42 MIK Mic F5
14 METRONOME Metro C#3 43 TRANSPOSE Transpose F#5
15 PORTABLE GRAND Piano D3 44 TEMPO/TAP Temp/TAP G5
16 SONG Song D#3 45 KARAOKE Karaoke G#5
17 P.V.G. PVG E3 46 SCORE Score A5
18 STYLE style F3 47 EXIT Exit A#5
19 VOICE Voice F#3 48 MEMORY Memory B5
20 FILE CONTROL FileControl G3 49 BANK Bank C6
21 EXECUTE Excute G#3 50 REGIST 1 Regist 1 C#6
22 CATEGORY - Catego - A3 51 REGIST 2 Regist 2 D6
23 CATEGORY + Catego + A#3 52 REC REC D#6
24 Tenkey 1 Tenkey 1 B3 53 SONG 1 Song 1 E6
25 Tenkey 2 Tenkey 2 C4 54 SONG 2 Song 2 F6
26 Tenkey 3 Tenkey 3 C#4 55 SONG 3 Song 3 F#6
27 Tenkey 4 Tenkey 4 D4 56 SONG 4 Song 4 G6
28 Tenkey 5 Tenkey 5 D#4 57 SONG 5 Song 5 G#6
29 Tenkey 6 Tenkey 6 E4 58 SONG A Song A A6
*1: A rotary encoder is clockwise set to UP and is counterclockwise set to DOWN.
24
PSR-K1

12 021 A.LED Chk Check that all LEDs of a panel light up.
13 022 R.LED Chk Check that all LEDs of the red of a panel light up.
14 023 G.LED Chk Check that all LEDs of the blue of a panel light up.
15 028 LCD On Check that all the dots of LCD light up. (The whole screen becomes white.)
16 029 LCD Off Check that all the dots of LCD disappears. (The whole screen becomes blue.)
17 031 PD1 Chk Connect the foot switch to the [FOOT SWITCH] jack.
Check that the C3 note is output when starting the test program.
Check that the C4 note is output when pushing the pedal and that tone is turned off when
releasing the pedal.
18 037 USB Chk The USB cable connected to PC is connected to a main part.
(Install a USB-MIDI driver in PC and finish a through setup.)
The unit shall be generated the sound with C4 tone.
19 039 MIC Chk The sign wave of 1 kHz and -43.0 dBm is inputted into a microphone jack.
Set the [MIC VOLUME] at maximum.
Phones L/R: -3.5 dBm +/-2 dB
20 041 ROM Chk2 Checks the ROM. The test result appears on the LCD. It will take 11 seconds, until being
displayed.
21 042 RAM Chk2 Checks the RAM. The test result appears on the LCD. It will take 6 seconds, until being
displayed.
22 043 WRom Chk2 Checks the WROM. The test result appears on the LCD. It will take 6 seconds, until being
displayed.
23 048 Test Exit Exit from the test program after executing this test.
25
PSR-K1
■ SAVING BACKUP DATA TO SMARTMEDIA CARD

The panel settings of this instrument are rest to their original default settings every time NOTE
you turn power off and on again, which means your original settings are lost. However, • If no SmartMedia card is inserted,
with a SmartMedia card, you can save your custom panel settings for recall by holding the instrument is automatically
reset to the original default set-
down the [FUNCTION] button. The next time you turn the power on (with the proper tings.
SmartMedia card inserted), all your custom settings are reloaded to the instrument. • Data cannot be saved to a Smart-
Media card during song playback.
• The setting data backed up to

the SmartMedia card is auto-
Press and hold matically given the same file
name; saving new data always
overwrites and deletes the pre-
vious data. This also deletes
the Registration Memory data in
the SmartMedia card.
• Do not turn off the power when

a “WRITING!” message is
Data which can be backed up shown. Doing so may result in
• Registration Memory loss of data on the SmartMedia
card.
• FUNCTION display settings :
Tuning, Split Point, Touch Sensitivity, Accompaniment Volume,
SongVolume, Metronome Volume, Grade Setting, Demo Cancel,
Microphone Volume, Microphone Echo Volume, Language Switch
• Touch Response ON/OFF
26
PSR-K1
■ MIDI IMPLEMENTATION CHART

YAMAHA [ Portable Keyboard ] Date:06-Feb-2003
Model PSR-K1 MIDI Implementation Chart Version : 1.0
Transmitted Recognized Remarks

Function...
Basic Default 1 - 16 1 - 16 *1
Channel Changed x x
Default 3 3
Mode Messages x x
Altered ************** x
Note 0 - 127 0 - 127

Number : True voice ************** 0 - 127
Velocity Note ON o 9nH,v=1-127 o 9nH,v=1-127

Note OFF o 9nH,v=0 o 9nH,v=0 or 8nH
After Key's x x
Touch Ch's x x
Pitch Bend x *2 o
0,32 o o Bank Select

1 x *2 o Modulation wheel
6 x *2 o Data Entry(MSB)
38 x o Data Entry(LSB)
7 o o Part Volume
10 o o Pan
Control 11 x *2 o Expression
64 o o Sustain
Change 84 x *2 o Portamento Cntrl
71 x *2 o Harmonic Content
72 x *2 o Release Time
73 x *2 o Attack Time
74 x *2 o Brightness
91,93 o o Effect Depth
96,97 x o RPN Inc,Dec
100,101 x *2 o RPN LSB,MSB
Prog o 0 - 127 o 0 - 127
Change : True # **************
System Exclusive o *3 o *3
: Song Pos. x x
Common : Song Sel. x x
: Tune x x
System : Clock o o
Real Time: Commands o *4 o *4
Aux :All Sound OFF o o(120,126,127)
:Reset All Cntrls x o(121)
:Local ON/OFF x o(122) *5
:All Notes OFF x o(123-125)
Mes- :Active Sense x x
sages:Reset x x
Mode 1 : OMNI ON , POLY Mode 2 : OMNI ON ,MONO o : Yes
Mode 3 : OMNI OFF, POLY Mode 4 : OMNI OFF,MONO x : No
27
PSR-K1
NOTE: <Reverb Type> F0H, 43H, 1nH, 4CH, 02H, 01H, 00H, mmH, llH, F7H
*1 By default (factory settings) the instrument ordinarily functions as a 16-channel • mm : Reverb Type MSB
multi-timbral tone generator, and incoming data does not affect the panel • ll : Reverb Type LSB
voices or panel settings. However, the MIDI messages listed below do affect Refer to the Effect Map for details.
the panel voices, auto accompaniment, and songs. <Chorus Type> F0H, 43H, 1nH, 4CH, 02H, 01H, 20H, mmH, llH, F7H
• MIDI Master Tuning • mm : Chorus Type MSB
• System exclusive messages for changing the Reverb Type and Chorus • ll : Chorus Type LSB
Type. Refer to the Effect Map for details.
*2 Messages for these control change numbers cannot be transmitted from the *4 When the accompaniment is started, an FAH message is transmitted. When
instrument itself. However, they may be transmitted when playing the accom- accompaniment is stopped, an FCH message is transmitted.When the clock is
paniment, song or using the Harmony effect. set to External, both FAH (accompaniment start) and FCH (accompaniment
stop) are recognized.
*3 Exclusive
<GM System ON> F0H, 7EH, 7FH, 09H, 01H, F7H *5 Local ON/OFF
• This message automatically restores all default settings for the instrument, <Local ON> Bn, 7A, 7F
with the exception of MIDI Master Tuning. <Local OFF> Bn, 7A, 00
<MIDI Master Volume> F0H, 7FH, 7FH, 04H, 01H, ll, mm, F7H Value for “n” is ignored.
• This message allows the volume of all channels to be changed simulta-
neously (Universal System Exclusive).
• The values of “mm” is used for MIDI Master Tuning. (Values for “ll” are
ignored.)
<MIDI Master Tuning> F0H, 43H, 1nH, 27H, 30H, 00H, 00H, mm, ll, cc, F7H
• This message simultaneously changes the tuning value of all channels.
• The values of “mm” and “ll” are used for MIDI Master Tuning.
• The default value of “mm” and “ll” are 08H and 00H, respectively. Any val-
ues can be used for “n” and “cc.”
Effect map
* When aType LSB value is receieved that corresponds to no effect type, a value corresponding to the effect type
(coming the closest to the specied value) is automatically set.
* The numbers in parentheses in front of the Effect Type names correspond to the number indicated in the display.
REVERB
TYPE TYPE LSB
MSB 00 01 02 08 16 17 18 19 20
000 No Effect
001 (01)Hall1 (02)Hall2 (03)Hall3
002 Room (04)Room1 (05)Room2
003 Stage (06)Stage1 (07)Stage2
004 Plate (08)Plate1 (09)Plate2
005...127 No Effect
CHORUS
TYPE TYPE LSB
MSB 00 01 02 08 16 17 18 19 20
000...063 No Effect
064 Thru
065 Chorus (02)Chorus2
066 Celeste (01)Chorus1
067 Flanger (03)Flanger1 (04)Flanger2
068...127 No Effect
28
PARTS LIST
■ CONTENTS
OVERALL ASSEMBLY ............................................................... 2
KEYBOARD ASSEMBLY ........................................................... 5
ELECTRICAL PARTS ................................................................ 6
Notes: DESTINATION ABBREVIATIONS

A: Australian model O: Chinese model
B: British model U: U.S.A. model
C: Canadian model V: General export model (110V)
E: European model W: General export model (220V)
H: North European model X: General export model
I: Indonesian model Y: Export model
J: Japanese model
• The numbers in “QTY” show quantities for each unit.

• The parts with “--” in “Parts No.” are not available as spare parts.
• The mark “ } ” in the remarks column indicates that these parts are interchangeable.
• The second letter of the shaded ( ) part number is I, not one.
■ WARNING
Components having special characteristics are marked and must be replaced with parts having
specification equal to those originally installed.
PSR-K1
■ OVERALL ASSEMBLY
570 Music rest
220 250
210
10
10b
530 230
240 510
20
490
10d L40 L10
160 550 L30
450 540 520
130
350 190
L30
L20
130 470
L50
10e 540 480 500
320
130
130 10e 10c

90 70
340 80
130 100 50
10a
110 10d
330
40 30
130 270
450
60 370
430
290 380 420
280
560
130 450 2/2 20
1/2 310
130 490
130 130 130 450 160
450 360
C210 C70 280 130 130 450
C200 410 450 350
280 1/2
2/2 440c
C170 440a 130
C60 C20 130
300
440
450 390
130
C40
C190 C220 440b
C30 400
C50 120
C10c
C10e
C10b
C230 C170 C210 C200
C10f
C180
C170
C160
140
C100 C120 C200
C10
C120
C10d C10e
C90 C170 C10a
C120
C80 C130
C80 460
C110
C80
200 150
260
2
PSR-K1
REF NO. PART NO. DESCRIPTION REMARKS QTY RANK

OVERALL ASSEMBLY PSR-K1
-- Overall Assembly FE (WA79160)
∗ 10 WA803900 Upper Case Assembly
10a -- Upper Case (WA80420)
∗ 10b WA804500 Speaker Grille
∗ 10c WA804600 Speaker Grille
10d -- Dust Proof Cloth 70X8X0.5 WHITE (WA81330) 16
10e -- Cushion M37.5X4.75 (WB07080) 2
20 X0159A00 Speaker 3.0cm 2 01
∗ 30 WA809200 Panel Switch 0-9, +, -
∗ 40 WA809300 Panel Switch CATEGORY
∗ 50 WA809400 Panel Switch SONG, EASY SONG ARRANGER,
STYLE, VOICE, FILE CONTROL,
EXECUTE
∗ 60 WA832600 Panel Switch MEMORY, BANK, 1, 2, REC, 1-5,A
∗ 70 WA809500 Panel Switch FUNCTION, PC, METRONOME,
PORTABLE GRAND
∗ 80 WA809600 Panel Switch DEMO, L, R, DICTIONARY,
PERFORMANCE ASSISTANT
∗ 90 WA810400 Panel Switch TOUCH, HARMONY, DUAL, SPLIT,
∗ 100 WA832700 Panel Switch ACMP ON/OFF, SYNC STOP,
SYNC START, INTRO/ENDING/rit.
MAIN/AUTO FILL, START/STOP,
MIC, TRANSPOSE, TEMPO/TAP
∗ 110 WA809700 Panel Switch KARAOKE, SCORE, EXIT
∗ 120 WA804100 Lower Case Assembly PT
130 EP600250 Bind Head Tapping Screw-B 3.0X8 MFZN2Y 76 01
140 VE683000 Bind Head Tapping Screw-B 3.0X12 MFZN2Y 9 01
150 V7213700 Bind Head Tapping Screw-B 3.0X30 MFZN2Y 3
160 V3645500 Sponge 20X10X10 2 01
190 -- LCD Unit PT (WA86100)
200 V9259700 Battery Cover Assembly PT, Black 03
210 VQ218800 Knob STANDBY/ON 03
220 V8361300 Knob MASTER VOLUME 01
230 V8866500 Encoder Knob CATEGORY 01
240 V2300100 Knob MIC VOLUME 04
∗ 250 WA813400 LCD Panel
260 -- Label FE (WA79950)
∗ 270 WA812800 Circuit Board PNL (WA81270)(X3871C0)
∗ 280 WA812900 Circuit Board PNR 1/2, 2/2 (WA81270)(X3871C0)
∗ 290 WA742200 Circuit Board AM (WA74210)(X3869C0)
∗ 300 WA742300 Circuit Board ENC (WA74210)(X3869C0)
∗ 310 WA742400 Circuit Board JACK (WA74210)(X3869C0)
∗ 320 WA742500 Circuit Board MVR (WA74210)(X3869C0)
∗ 330 WA742600 Circuit Board MICVR (WA74210)(X3869C0)
∗ 340 WA742700 Circuit Board PSW (WA74210)(X3869C0)
∗ 350 WA742800 Circuit Board TW (WA74210)(X3869C0) 2
∗ 360 WA743000 Circuit Board DM (WA74290)(X3870C0)
∗ 370 WB105000 Connector Assembly P=1.0-K-18-250
∗ 420 WA836000 Connector Assembly P=1.0-L-4-80
∗ 430 WA836100 Connector Assembly S-P=1.0-K-5-50GS-3
440 -- Smart-media Assembly (WB10350)
440a V3882500 SM Escutcheon K-CB 01
∗ 440b WB091300 Circuit Board SM (WB09110)(X4145A0)
440c EP600190 Bind Head Tapping Screw-B 3.0X8 MFZN2BL 2 01
450 VA126100 Adhesive Tape 12X50 19 03
460 -- Adhesive Tape 12X90 (V591240)
∗ 470 WA860900 Mic Holder A
∗ 480 WA939200 Mic Holder B
∗ 490 WA866700 Mic Plate 2
∗ 500 WA963400 Screw Gray 6X45
510 -- Dust Proof Cloth CALMFLEX F-2 (WA93280)
520 CB000710 Nylon Clamp NK-5N 01
∗ 530 WA974400 Cap
540 EP600190 Bind Head Tapping Screw-B 3.0X8 MFZN2BL 4 01
550 VD976600 Bind Head Screw 3.0X8 MFZN2Y 01
∗ 560 WB091000 Circuit Board PNC 1/2, 2/2 (WA81270)(X3871C0)
570 V7660600 Emblem
-- LCD Unit PT (WA86100)

∗ L10 WA815800 LCD CMS-GG453DBTN-N
∗: New parts RANK: Japan only
3
PSR-K1

∗ L20 WA813500 Backlit Assembly PT
L30 EP600250 Bind Head Tapping Screw-B 3.0X8 MFZN2Y 2 01
L40 -- Connector Assembly BL 2P (WB09210)
L50 VA126100 Adhesive Tape 12X50 03
-- Lower Case Assembly PT (WA80410)

C10 V8749200 Lower Case Sub-Assembly 08
C10a -- Lower Case (V867160)
C10b VI104400 Plate, Foot CH 3
C10c EP600250 Bind Head Tapping Screw-B 3.0X8 MFZN2Y 6 01
C10d CB043750 Foot Black T1.6 5 01
C10e -- Cushion 380X15X1.0 (V881260) 2
C10f -- Cushion 885X15X1.0 (V642110)
C20 V8695700 Keyboard Assembly 16N C61
C30 -- Connector Assembly MK61-A 12P L=300 (V873900)
C40 -- Connector Assembly MK61-B 7P L=200 (V873910)
C50 -- Connector Assembly MK61-C 5P L=350 (V873920)
∗ C60 WA813000 Circuit Board RELAY (WA81270)(X3871C0)
C70 EP600250 Bind Head Tapping Screw-B 3.0X8 MFZN2Y 4 01
C80 -- Dust Proof Cloth 40X13X0.5 (V771130) 6
C90 -- Dust Proof Cloth 13X13X0.5 (V771140)
C100 V7060500 Spring Terminal 01
C110 V7060700 Spring Terminal 01
C120 V7060200 Spring Terminal 5 01
C130 -- Connector Assembly 2P (V873560)
C160 -- Adhesive Tape 12X90 (V591240)
C170 VA126100 Adhesive Tape 12X50 8 03
C180 V8749500 Speaker Box Assembly Right 05
C190 V8749400 Speaker Box Assembly Left 05
C200 EP640130 Bind Head Tapping Screw-B 4.0X10 MFZN2Y 40 01
C210 X2549A00 Speaker 12.0cm 4ohm 8W 2 05
C220 -- Connector Assembly SP-L 2P (V873540)
C230 -- Connector Assembly SP-R 2P (V873550)
ACCESSORIES
V8696800 Music Rest 05
∗ WB031000 Smart-media 8MB W,U,C,O
∗ WA860800 Smart-media 8MB J
∗ X4032A00 CD-ROM W,U,C,O
∗ X4173A00 CD-ROM J
∗ WA974000 Microphoes UDM-328
V8029000 AC Adapter PA-5D J J
VY944500 AC Adapter PA-51 CH O
∗ WA803200 Japanese Guide Sheet J
∗ WA803300 Chinese Guide Sheet O
∗ WA974400 Cap

4
PSR-K1
■ KEYBOARD ASSEMBLY 200
190 10
10a 200
40
50
150a 180
10b
50
150c 190
180
160
150b 60
200
150d
150
10
30
170
REF NO. PART NO. DESCRIPTION 部品名 REMARKS QTY RANK

KEYBOARD ASSEMBLY PSR-K1
-- Keyboard Assembly 16N C61 (V869570)
10 V34107A0 White Keys 16N CEGBDFA 5 04
10a
10a
--
--
White Keys
White Keys
16N CEGB
16N CEGB } (V341260)
(WB12520)
5
5
10b
10b
--
--
White Keys
White Keys
16N DFA
16N DFA } (V341270)
(WB12530)
5
5
30 V4760300 White Key 16N C6 02
40 VZ271700 Black Key 16N 5 06
50 V3413600 Rubber Contact 16N-2M OCT 2M 4 04
60 V7477400 Rubber Contact 16N-2M 13K 2M 04
150 -- Circuit Board Assembly MK (V869560)
150a V8695300 Circuit Board 61L (V869520)(X2336A0) 04
150b V8695500 Circuit Board 61H (V869540)(X2335B0) 04
150c V8696200 Connector Assembly RELAY 210 01
150d VZ302900 Felt U 02
160 VZ303000 Felt L 02
170 V7100100 Support Rubber 16N 03
180 EP600250 Bind Head Tapping Screw-B 3.0X8 MFZN2Y 7 01
190 VZ313100 Bind Head Tapping Screw-P SP 3.0X12 MFZNBL 13 01
200 VT069800 Bind Head Tapping Screw-P 3.0X20 MFZN2 21 01

5
PSR-K1
■ ELECTRICAL PARTS
ELECTRICAL PARTS PSR-K1
∗ WA742200 Circuit Board AM (WA74210)(X3869C0)
∗ WA742300 Circuit Board ENC (WA74210)(X3869C0)
∗ WA742400 Circuit Board JACK (WA74210)(X3869C0)
∗ WA742500 Circuit Board MVR (WA74210)(X3869C0)
∗ WA742600 Circuit Board MICVR (WA74210)(X3869C0)
∗ WA742700 Circuit Board PSW (WA74210)(X3869C0)
∗ WA742800 Circuit Board TW (WA74210)(X3869C0)
∗ WA743000 Circuit Board DM (WA74290)(X3870C0)
∗ WA812800 Circuit Board PNL (WA81270)(X3871C0)
∗ WA812900 Circuit Board PNR 1/2, 2/2 (WA81270)(X3871C0)
∗ WB091000 Circuit Board PNC 1/2, 2/2 (WA81270)(X3871C0)
∗ WA813000 Circuit Board RELAY (WA81270)(X3871C0)
∗ WB091300 Circuit Board SM (WB09110)(X4145A0)
V8695300 Circuit Board 61L (V869520)(X2336A0) 04
V8695500 Circuit Board 61H (V869540)(X2335B0) 04
∗ WA742200 Circuit Board AM (WA74210)(X3869C0)

∗ WA742300 Circuit Board ENC (WA74210)(X3869C0)
∗ WA742400 Circuit Board JACK (WA74210)(X3869C0)
∗ WA742500 Circuit Board MVR (WA74210)(X3869C0)
∗ WA742600 Circuit Board MICVR (WA74210)(X3869C0)
∗ WA742700 Circuit Board PSW (WA74210)(X3869C0)
∗ WA742800 Circuit Board TW (WA74210)(X3869C0)
-- Jumper Wire 0.55 (VA07890)
EP600190 Bind Head Tapping Screw-B 3.0X8 MFZN2BL 01
EP630220 Bind Head Tapping Screw-P 3.0X8 MFZN2BL 01
-- Angle Bracket (WA93110)
C0101 UA654470 Mylar Capacitor 0.0470 50V J 01
C0103 VK373000 Electrolytic Cap. 4700 25.0V 03
C0104 UR867100 Electrolytic Cap. 10.00 50.0V 01
C0106 VC694800 Semiconductive Cera. Cap. 0.1000 25V Z 01
-0109 VC694800 Semiconductive Cera. Cap. 0.1000 25V Z 01
C0203 UA353100 Mylar Capacitor 1000P 50V J 01
C0205 VE327200 Monolithic Mylar Capacitor 1.0 50V J 02
C0206 VE327200 Monolithic Mylar Capacitor 1.0 50V J 02
-0218 UA654470 Mylar Capacitor 0.0470 50V J 01
C0303 FG612470 Ceramic Capacitor-B 470P 50V K 01
C0402 FG644100 Electrolytic Cap. 0.0100 50V Z 01
C0404 FG652100 Ceramic Capacitor-SL 100P 50V J 01
6
PSR-K1

C0413 FG644100 Electrolytic Cap. 0.0100 50V Z 01
CN101 LB918030 Base Post Connector XH 3P TE 01
CN102 VK024800 Wire Trap 52147 4P TE 01
∗ CN104 WA521800 FFC Connector 52806 18P TE
CN201 VI878000 Cable Holder 51048 2P TE 01
D0101
D0101
D0101
VV731400
VY717100
V8603100
Diode
Diode
Diode
2A02M
LT2A02-E
2A02GM
} 01
01
D0102
D0102
D0102
EC901
VV731400
VY717100
V8603100
VU481300
Diode
Diode
Diode
Encoder
2A02M
LT2A02-E
2A02GM
REB161 PVB 15F
}
CATEGORY
01
01
03
HS001 -- Heat Sink (V862490)
IC101 XU814A00 IC PQ05RD11 REGULATOR +5V 03
IC102 XU814A00 IC PQ05RD11 REGULATOR +5V 03
IC201 XQ619A00 IC LA4705NA POWER AMP 05
IC301 XF633A00 IC UPC4572HA OP AMP 02
IC401 XF633A00 IC UPC4572HA OP AMP 02
JK101 LB302260 Connector HEC0470-01-630 02
JK101 V6557600 Connector HTJ-020-05AZ } DC IN 10-12V 04
JK201 LB101870 Phone Jack YKB21-5006 PHONES 03
JK301 VP599300 Pin Jack YKC21-3120 OUTPUT L, R 02
JK401 LB101870 Phone Jack YKB21-5006 MIC 03
∗
JK801
JK801
V6802600
WB106700
Jack
Jack
USB 4P SE
USB 4P TE } USB 02
JK802 VC687500 Phone Jack YKB21-5014 SUSTAIN 01

L0101 VQ884000 Line Filter CM08RB01 03
L0201 VB835000 Coil FL5R200QNT 20uH 01
L0203 -- Jumper Wire 0.55 (VA07890)
L0303 -- Jumper Wire 0.55 (VA07890)
L0403 GE300610 Ferrite Bead BL02RN1-R62T4 01
L0405 GE300610 Ferrite Bead BL02RN1-R62T4 01
L0801 -- Jumper Wire 0.55 (VA07890)
R0101 HF755100 Carbon Resistor 100.0 1/4 J 01
-0104 HF755100 Carbon Resistor 100.0 1/4 J 01
R0203 HF756100 Carbon Resistor 1.0K 1/4 J 01
R0301 -- Jumper Wire 0.55 (VA07890)
R0302 -- Jumper Wire 0.55 (VA07890)
-0306 HF756470 Carbon Resistor 4.7K 1/4 J 01
7
PSR-K1

R0413 -- Jumper Wire 0.55 (VA07890)
SW501
SW501
VY980400
V9661700
Push Switch
Push Switch
SDDLB1 J,UC,CEE
SY16-32-4(U99S2)/T } STANDBY/ON 03
03
TH101 VV458000 Poly Switch RUE250 2.50A 30V 03
TH101 V8132900 Multi Fuse MF-R250-AP-10 } 03
∗ VR601 WA994700 Rotary Variable Resistor A 10.0K XV014111 MASTER VOLUME
∗ VR701 VV905400 Rotary Variable Resistor A 10.0K RK09K113 MIC VOLUME
VR801 VM755200 Rotary Variable Resistor B 1.0K RK09K111 LCD CONTRAST 01
WH201 -- Connector Assembly TW-L 2P L=:: (V873470)
WH202 -- Connector Assembly TWT 2P (WB09240)
WH501 -- Power Switch Assembly PSW 4P (WB09330)
WH601 -- Connector Assembly MVR 5P (WB09400)
WH701 -- Connector Assembly MICVR 3P (WB09310)
WH901 -- Connector Assembly ENC 3P (WB09270)
∗ WA743000 Circuit Board DM (WA74290)(X3870C0)

C0101 US062220 Ceramic Capacitor-SL(chip) 220P 50V J 01
C0102 US063470 Ceramic Capacitor-B (chip) 4700P 50V K 01
C0103 US145100 Ceramic Capacitor-F (chip) 0.1000 25V Z 01
C0104 UF028100 Electrolytic Cap. (chip) 100 10V 01
-0110 US145100 Ceramic Capacitor-F (chip) 0.1000 25V Z 01
∗ C0207 UF158100 Electrolytic Cap. (chip) 100 35V UUR1V1
∗ C0207 WB291100 Electrolytic Cap. (chip) 100 35V ECEV1VA
-0220 US062100 Ceramic Capacitor-SL(chip) 100P 50V J 01
8
PSR-K1

C0411 UF066220 Electrolytic Cap. (chip) 2.2 50V 01
C0412 UF066220 Electrolytic Cap. (chip) 2.2 50V 01
C0421 UF138220 Electrolytic Cap. (chip) 220 16V UUR1C2 01
-426 UF037100 Electrolytic Cap. (chip) 10 16V 01
C0704 US061220 Ceramic Capacitor-CH(chip) 22P 50V J 01
-0707 US061220 Ceramic Capacitor-CH(chip) 22P 50V J 01
∗ CN101 V3576000 Connector, FFC 52793 18P SE
∗ CN201 WA625700 Connector, FFC 52793 14P SE
∗ CN601 V2782800 Connector, FFC 52793 16P SE
CN701 V8903100 Connector, FFC 52793 24P SE 01
CN801 V4574900 Connector, FFC 52793 26P SE 02
CR101 WA321100 Ceramic Resonator 16.9344M CSTCE16M9
∗ CR201 WA782500 Ceramic Resonator 8M CSTCE8M00G52-R0
∗ CR301 WA698700 Ceramic Resonator 6M CSTCR6M00G15045
∗ CR701 WA782100 Ceramic Resonator 5M CSTCR5M00G53-R0
D0201 V2376600 Diode RB500V-40 01
D0301 V2376600 Diode RB500V-40 01
-0304 V2376600 Diode RB500V-40 01
D0501 VT332900 Diode 1SS355 TE-17 01
IC101 X3271A00 IC YMW767-V CPU
IC102
IC102
X0165A00
X3847A00
IC
IC
PST596DNR
S-80142ANMC-JC3-T2 } SYSTEM RESET 02
01
∗ IC103 X3893100 IC MR27V6402G-20 P2ROM 64M PROGRAM
∗ IC104 X3894100 IC MX23L3213TC-90 MASK ROM 32M WAVE
∗
∗
IC105
IC105
IC105
IC106
X3860A00
X4027A00
X4028A00
IS000400
IC
IC
IC
IC
MSM51V18165F-60TSK
MSM51V18165F-50TSK
GLT4160L16-45TC
HD74LV04AFPEL
} DRAM 16M
INVERTER
08
01
∗ IC106 XY746A00 IC 74LVX04SJX }
IC107 IS003200 IC HD74LV32AFPEL 01
∗ IC107 X4174A00 IC 74LVX32SJX } OR
IC110 X3679A00 IC RH5RZ25CA-T1 REGULATOR +2.5V
IC111 XS516A00 IC UPC2933T-E1 REGULATOR +3.3V 03
IC111 X0638A00 IC UPC2933AT-E1 } 03
IC112 XI577A00 IC M5233FP COMPARATOR 01
IC201 XQ595A00 IC S1D13305F00B100 LCDC 08
∗ UPD43256BGW-A85X-9
}
IC202 X3892A00 IC SRAM 256K
∗ IC202 X4386A00 IC BS62LV256TC-70 SRAM 256K
∗ IC202 X4388A00 IC IS62LV256-70T SRAM 256K
∗ IC202 X4390A00 IC CY62256VLL-70ZCT SRAM 256K
IC203 X0200A00 IC NJM2360AM DC/DC CONVERTER 03
∗ IC301 X3921200 IC M38K07M4L-301HP USB CPU
IC402 XF634A00 IC UPC4572G2-T1 OP AMP 02
IC403 X3538A00 IC PCM1742KE/2K DAC
∗ IC501 X3781A00 IC AK5355VT ADC
IC601 IS000400 IC HD74LV04AFPEL 01
∗ IC601 XY746A00 IC 74LVX04SJX } INVERTER
IC701 XZ560100 IC UPD789022GB-A15-8E CPU 04
9
PSR-K1

∗ IC801 X3831A00 IC M4A3-32/32-10VC48 CPU
L0101 VY657200 Chip Inductance 600 BK1608HM601 01
∗ L0201 WA645300 Chip Choke Coil 120U PLFC0745P-121
R0105 RD357100 Carbon Resistor (chip) 10.0K 63M J 01
-0109 RD357100 Carbon Resistor (chip) 10.0K 63M J 01
R0115 RD355100 Carbon Resistor (chip) 100.0 63M J 01
R0117 RD350000 Carbon Resistor (chip) 0 63M J 01
R0136 RD359100 Carbon Resistor (chip) 1.0M 63M J 01
R0203 RD350000 Carbon Resistor (chip) 0 63M J 01
R0205 RF457820 Metal Film Resistor (chip) 82.0K 63M J 01
R0206 RF457120 Metal Film Resistor (chip) 12.0K 63M J
∗ R0208 WA743800 Fuse Resistor (chip) 6.8 0.1W J
R0209 RF456470 Metal Film Resistor (chip) 4.7K 63M J
R0505 RD350000 Carbon Resistor (chip) 0 63M J
R0506 RD350000 Carbon Resistor (chip) 0 63M J
10
PSR-K1

-0743 RD355100 Carbon Resistor (chip) 100.0 63M J 01
∗ TA601 WB123200 Transistor Array IMB10A T110
∗ TA604 WB107300 Transistor Array IMH10A T110
TR301 VV556500 Transistor 2SA1037AK Q,R,S 01
TR302 VV556400 Transistor 2SC2412K Q,R,S 01
TR801 VJ927200 Transistor 2SA1162 O,Y 01
∗ WA812800 Circuit Board PNL (WA81270)(X3871C0)

∗ WA812900 Circuit Board PNR 1/2, 2/2 (WA81270)(X3871C0)
∗ WB091000 Circuit Board PNC 1/2, 2/2 (WA81270)(X3871C0)
∗ WA813000 Circuit Board RELAY (WA81270)(X3871C0)
∗ CN001 WB124100 Connector , FFC 52807 14P SE
CN601 VZ479500 Connector , FFC 52806 24P TE 01
D0001 VB941200 Diode 1SS133,1SS176 01
-0008 VB941200 Diode 1SS133,1SS176 01
∗ LD001 WB120100 LED Red E1L4E-9R1A2-00
∗ -006 WB120100 LED Red E1L4E-9R1A2-00
LD007 V8732600 LED Red E1L4E-SB1A2-02 05
WH001 -- Connector Assembly PNC 4P (WB09360)
WH002 -- Connector Assembly PNR 7P P=2.0 (WB09670)
WH003 -- Connector Assembly PNL 11P (WB09450)
∗ WB091300 Circuit Board SM (WB09110)(X4145A0)

-- Jumper Wire 0.55 (VA07890)
CN001 V4574900 Connector , FFC 52793 26P SE 02
CN002 V3962800 Connector Assembly CN015R-3013-0 05
11
PSR-K1
V8695300 Circuit Board 61L (V869520)(X2336A0) 04

VQ769500 Masking Tape W=15
D001 VV437800 Diode 1N4148(DO-34) 01
-072 VV437800 Diode 1N4148(DO-34) 01
V8695500 Circuit Board 61H (V869540)(X2335B0) 04

VQ769500 Masking Tape W=15
D073 VV437800 Diode 1N4148(DO-34) 01
-122 VV437800 Diode 1N4148(DO-34) 01
X0159A00 Speaker 3.0 cm 2 01

X2549A00 Speaker 12.0 cm 2 05
∗ WA815800 LCD CMS-GG453DBTN-N 01

∗ WA813500 Back-lit Assembly PT

12
A B C D E F G H I J K L M N O P Q
n PSR-K1 OVERALL CIRCUIT DIAGRAM 1/2 (DM, ENC, JACK, PNC1/2, PNC2/2, PNL, PNR1/2, PNR2/2, SM) PSR-K1
1 1
DM
SRAM 256K
2 2
LCDC
Back Light Assembly to AM-CN102

CPU
ENC
CATEGORY
3 LCD DRAM 16M 3
28CC1-8828103 4
PNR 2/2 PNR 1/2
INVERTER
4 4
P2ROM 64M MASK ROM 32M INVERTER OR
SYSTEM RESET (PROGRAM) (WAVE)
CPU
REGULATOR +2.5V
28CC1-8828105 2 28CC1-8828105 2
REGULATOR +3.3V
5 5
PNC 1/2 PNL
CPU
6 to RELAY-CN601 6
COMPARATOR
USB
ADC DAC
INVERTER
7 28CC1-8828105 2 28CC1-8828105 2
7
to AM-CN104
OP AMP
DC/DC CONVERTER
8 8
JACK
PNC 2/2
USB
28CC1-8828104 1/2 4
28CC1-8828104 2/2
Parts inside of are not installed.

SUSTAIN
9 9
LCD
CONTRAST
28CC1-8828105 2 28CC1-8828103 4
RH5RZ25CA-T1(X3679A00) UPC2933T-E1(XS516A00) WARNING
REGULATOR +2.5V UPC2933AT-E1(X0638A00)
Components having special characteristics are marked and SM
DM: IC110 REGULATOR +3.3V
DM: IC111 must be replaced with parts having specification equal to those
originally installed.
4
1 2
Note: See parts list for details of circuit board componett parts.
1
2 1: INPUT
3 1: GND 3
2: GND
10 2: INPUT
3: OUTPUT : Ceramic Capacitor 10
3: OUTPUT
4: GND
: Metal Film Resistor
CARD
: Fuse Resistor
28CC1-8828106
11 11
12 12
PSR-K1 PSR-K1
n PSR-K1 OVERALL CIRCUIT DIAGRAM 2/2 (AM, MICVR, MVR, PSW, RELAY, TW, 61L, 61H) PSR-K1
1 1
PQ05RD11(XU814A00) WARNING
REGULATOR +5V
MICVR MIC AM TW AM: IC101, 102
Components having special characteristics are marked and
VOLUME
must be replaced with parts having specification equal to those
originally installed.
L
1:INPUT Note: See parts list for details of circuit board componett parts.
2:OUTPUT
28CC1-8828103 4 3:GND
2 Tweeter 12
34 4:ON/OFF : Mylar Capacitor 2
POWER AMP TW CONTROL
: Ceramic Capacitor
: Semiconductive Ceramic Capacitor
R
: Metal Film Resistor
Woofer
R
MIC
3 3
OP AMP
PHONES
MVR
MASTER VOLUME
4 4
OP AMP L
OUTPUT
R
28CC1-8828103 4
OP AMP
5 5
PSW
SW501
STANDBY/ON
6 6
REGULATOR +5V
to DM-CN101
BATTERY
DC-IN 10-12V
7 7
to BACK LIGHT
REGULATOR +5V
28CC1-8828103 4
Parts inside of are not installed.

8 8
61H
9 9
RELAY
to DM-CN701
(C4~C6)
10 28CC1-8822437 10
61L
28CC1-8828105 2
11 11
(C1~B3) 28CC1-8822436
12 12
PSR-K1 PSR-K1

Yamaha psr-k1

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SERVICE MANUAL

WARNING: CHEMICAL CONTENT NOTICE!

Style Power Consumption (when using PA-5D power adaptor)

Song List Style List Voice List

#9 Card slot (for SmartMedia) $2 [LCD CONTRAST] knob $5 OUTPUT R, L jack

16.9344 MHz 12 MA0-21

57 ~ 64 +5A MIC +5A

PROG WAVE AMP

PNC PNL PNR 4 2 L

RELAY 2 POWER AMP 15

■ UNIT LAYOUT & WIRING

Upper Case Assembly 11 13 22 18 2 3 4 14 7 5

PSW MICVR AM PNL JACK ENC SM

2. Removing the Spring Terminal (+), (-) and

Spring Terminal (-) Spring Terminals Spring Terminal (+)

Hook Hook Hook

Spring Terminal (-)

(Fig. 2-1) (Fig. 2-2)

7. PSW Circuit Board (Time Required: about 3 min)

MVR AM PNC 2/2 PNR

Speaker (L) [130e] [130c] [130g] x3 [130h] Speaker (R)

[130]: Bind Head Tapping Screw-B 3.0x8 MFZN2Y (EP600250)

12. PNR 2/2 Circuit Board 15. PNL Circuit Boards

PNC 1/2 PNR 2/2

[130l] [130n] [130j] [130k] x3

[130]: Bind Head Tapping Screw-B 3.0x8 MFZN2Y (EP600250)

18. RELAY Circuit Board 20. Keybaord Assembly

[200a] [200a] [200a] [200a] [200a] [200b]

21. Rubber Contact

24. Microphone Holder

Microphone holder cap

■ LSI PIN DESCRIPTION

M4A3-32/32-10VC48 (X3831A00) CPU DM: IC801

S1D13305F00B100 (XQ595A00) LCDC (LCD Controller) DM: IC201

M38K07M4L-301HP (X3921200) USB CPU DM: IC301

UPD789022GB-A15-8E (XZ560100) CPU DM: IC701

Vo1 1 +V 8 Vcc Output A 1 +V 8

HD74LV32AFPEL (IS003200) AK5355VT (X3781A00)

1A 1 14 VCC VCOM 1 16 TST1

1Y 3 12 4A LIN 3 14 DIF LRCK

7 GND 8 3Y SEL 7 10 LRCK VCOM

NJM2360AM (X0200A00) PCM1742KE/2K (X3538A00)

ZEROL ZEROR VDD DGND VCC AGND

HD74LV04AFPEL (IS000400) LA4705NA (XQ619A00)

Component side Pattern side

JACK Circuit Board RELAY Circuit Board

to DM-CN202 to 61L-CN5 to 61H-CN2 to 61H-CN1

Component side JACK: 2NA-WA74210 1

TW Circuit Board to TWEETER R to TWEETER L

AM Circuit Board OUTPUT DC-IN

PNL Circuit Board

FUNCTION DEMO TOUCH

PNC 1/2 Circuit Board

TEMPO/ START/ INTRO/ SYNC SYNC ACMP

PNC 2/2 Circuit Board

EXIT SCORE KARAOKE

PNC 1/2: 2NA-WA81270 1

PNC 2/2: 2NA-WA81270 1

PNR 1/2 Circuit Board

REF NO. PART NO. DESCRIPTION 部品名 REMARKS QTY RANK