SERVICE

MANUAL

P O W E R

AMPLIFIER
M-1500/2000

http://www.inter-m.com
MADE IN KOREA
NO: 9007979000
 ELECTRICAL ADJUSTMENT PROCEDURE

IDLE CURRENT

A. Setting
Set the master volume minimum.
B. Connection

TP1 TP2

R162 R145
VOLT METER

VR101

AMP B’D

C. Adjustment
– Adjust VR101 so that the current through the R162, R145 become 10 milliampere.
– When that voltage across the “TP1” to “TP2” becomes 30 millivolt, the current becomes 10
milliampere.

CONTENTS
Electrical Adjustment Procedure 1
Specifications 2
Electrical Parts List 3, 4
Top and Bottom View of P.C. Board 5, 6
Wiring Diagram 7
Block Diagram 8
Schematic Diagram 9, 10, 11, 12
Exploded View of Cabinet & Chassis / Mechanical Parts List 13, 14
Ass’y Drawing 15, 16

1
 SPECIFICATIONS ELECTRICAL PARTS LIST

M-1500 M-2000 Ref No. Part No. Description Value Ref No. Part No. Description Value
Power Output Level C309 3409247071-T CAP AF RSG 47UF 50V 6P 47/50
POWER B’D (4005185600) C310 3529330311-A CAP CE SL 33PF 50V J AXIAL 33P
f=1kHz, THD+N≤0.05% (Typical) AN102 4355824510 CON ASS’Y 5P ASS’Y 5P C320, C370 3529103531-A CAP CE F 10000PF 25V Z 0.01/25
STEREO RL=8Ω 500W+500W 670W+670W AN202 4355824515 CON ASS’Y 5P ASS’Y 5P C360 3529470311-A CAP CE SL 47PF 50V J AXIAL 47P
RL=4Ω 750W+750W 1000W+1000W AN403 4355767415 CON ASS’Y 3P (4P) ASS’Y 3P COIL 1-4 3908609980 EMI FILTER 2200PF EMI FILTER 2200P
AN501-502 4355789603 CON ASS’Y 2P FAN ASS’Y 3P IC301-303 2168220989 IC NJM 2068L JRC 2068DD
BRIDGED RL=8Ω 1500W 2600W BD100 2058100998 DIODE KBPC3504 KBPC 3504 JK301, JK303 4438090310 JACK COMBINATION CXLF-06L COMBI
One Channel Driven BD501-502 2058100987 DIODE BRIDGE (KPBP) 152 KPBP 152 JK302, JK304 4408194310 XLR JACK (M) E503A0150N XLR
f=1kHz THD+N≤0.05% RL=8Ω 500W 670W C124 3549472407 CAP SPARK KILLER 0.0047UF 400V 0.0047/400 R301, R351 3009823973 RES CF 82K 1/5W J N 82K
C501-504 3409268205 CAP HC 6800UF 125V M-1500 6800/125 R302, R352 3009105973 RES CF 1M 1/5W J N 1M
Frequency Response RL=8Ω, P.=1W 0dB+0.5, –1.5dB: f=DC~55kHz C501-504 3409268209 CAP HC 6800UF 160V M-2000 6800/160 R303-306, 3002150953 RES CF 15K 1/5W F N 15K 1%
C505-506 3619474153 CAP POLY TM 0.47UF 250V 0.47/250 R353-356
Power Bandwidth Half Power, THD+N≤0.1% 10Hz~40kHz C510-513, 3509472530-T CAP CE F 0.0047UF 50V Z 0.0047/50 R307, R357, 3009101973 RES CF 100 1/5W J N 100
STEREO RL=8Ω C520-523 R370
C514 3408210261 CAP RSG 1000UF 35V SNAP 16P 1000/35 R308, R358 3009103973 RES CF 10K 1/5W J N 10K
Total Harmonic Distortion (THD+N) C515, 3409210071-T CAP AF RSG 10UF 50V 5P 10/50 R309, R359 3003300953 RES CF 3K 1/5W FN 3K 1%
f=20Hz~20kHz, Half Power C528-529 R312, R362 3003656953 RES CF 6.56K 1/5W FN 6.56K 1%
C516, C531 3409210141-T CAP AF RSG 100UF 25V 6P 100/25 R316-317 3009563973 RES CF 56K 1/5W J N 56K
STEREO RL=8Ω ≤ 0.05% C524-525 3409222171-T CAP AF RSG 220UF 50V SG 10P 220/50 R318 3009104973 RES CF 100K 1/5W J N 100K
RL=4Ω ≤ 0.07% C526-527 3408247169 CAP AF SG 470UF 35V 470/35 R366-367 3009303973 RES CF 30K 1/5W J N 30K
BRIDGED RL=8Ω ≤ 0.07% C532 3408210191 CAP RSA 100UF 100V SNAP 13P 100/100 R368-369 3009153973 RES CF 15K 1/5W J N 15K
CN501, 4428594903 LA5268/LAB0640/2.5MM-03P CN 3P SW301 4618999910 SW SS65010-0203-9H-FN SLIDE/2POLE
Channel Separation Half Power RL=8Ω, CN502
≥ 80dB VR B’D (4005185620)
f=1kHz, ATT. max. Input 600Ω shunt CN503 4428595009 LW5267/LWB0640/2.5MM-09P CN 3P
CN506-511 4465998210 TERMINAL (250) PCB TAB 250T AN103, 4355801006 CON ASS’Y 6P FLAT ASS’Y 6P
Residual Noise (DIN Audio Filter) ≤ –70dB: ATT min. D501-504, 2058100996 DIODE RECTIFIER LT1N4006 (4007) 1N 4006 AN203
D506-507 C401-402, 3409247971-T CAP AF RSG 4.7UF 50V 5P 4.7/50
Signal-to-Noise Ratio DIN Audio, D505 2058502240 DIODE ZENER UZ-24BM (23.1, 25.5) UZ 24BM C451-452
≥100dB
Input 600Ω Shunt FAN 1-2 7308999010 FAN F8025*24B MA-430/830 FAN1 C403, C405, 3409210071-T CAP AF RSG 10UF 50V 5P 10/50
F101 5568224933 CIRCUIT BREAKER 25A (UL/CSA) M-1500 25A (UL/CSA) C453, C455
Damping Factor RL=8Ω, f=1kHz ≥150 F101 5568224833 CIRCUIT BREAKER 15A (DOM, EUROPE) M-1500 15A (DOM, EUROPE) C404, C454 3609104120-T CAP MA 0.1UF 100V J 0.1/100 (M)
F101 5568225033 CIRCUIT BREAKER 35A (UL/CSA) M-2000 35A (UL/CSA) CN401-402 4428595005 LW5267/LWB0640/2.5MM-05P WAFMW5P2.54
Slew Rate 8Ω Full Swing STEREO CN403-405 4428595003 LW5267/LWB0640/2.5MM-03P WAFMW3P2.54
±40V/µ F101 5568224433 CIRCUIT BREAKER 20A (DOM, EUROPE) M-2000 20A (DOM, EUROPE)
BRIDGED F102 5568224933 CIRCUIT BREAKER (W58-XC4C12A-25) 25A D401-402, 2058304100 DIODE IN4148 1N 4148
F501-503 5508412234 FUSE TS 20MM 1A/250V U/C/S T1AL D451-452
Sensitivity (ATT max.) IC501 2128610900 IC KA7815 COMMON 7815 D403, D453 2058502150 DIODE ZENER UZ-15BM (11.6, 12.4) UZ 15BM
0dBm
Rated Power into 4Ω 1kHz IC502 2128610800 IC MC7915 COMMON 7915 IC401 2118010332 IC NJM 5532DD JRC NJM 5532DD
INLET1 4448997410 AC INLET 6100.4315 250T SCURTE AC INPUT LD401 2308252222 LED REF SLR-54UR R5 RED ROHM R5R
Voltage Gain (ATT max.) 4Ω 1kHz 37dB 38.2dB P51-53 4465998210 TERMINAL (250) PCB TAB 250T R401, R404, 3009102973 RES CF 1K 1/5W J N 1K
P501 4355789207 CON ASS’Y RED ASS’Y R409, R410,
Input Impedance (ATT max.) ≥ 20kΩ (Balance/Unbalance) P502-503 4355789306 CON ASS’Y 1P ORG ASS’Y R451, R454,
P504 4355789403 CON ASS’Y 1P BLK ASS’Y R459-460
Indicators Power (Red) R402, R407, 3009104973 RES CF 100K 1/5W J N 100K
PO501-502 2438200515 THERMISTOR POWER NTC 5D-15 TH1D-22
Protection (Mute) x 2 (Red) PT1 2828063800 TRANS POWER 120Version M-1500 (UL/CSA) P.T (120 Version) R455, R457
Clip x 2 (Orange) PT1 2828063810 TRANS POWER 220Version M-1500 (DOM) P.T (220 Version) R403, R406, 3009222973 RES CF 2.2K 1/5W J N 2.2K
Signal x 4 (Green) PT1 2828063820 TRANS POWER 230Version M-1500 (EUROPE) P.T (230 Version) R453, R456
PT1 2828063840 TRANS POWER 240Version M-1500 (EUROPE) P.T (240 Version) R405, R452 3009331973 RES CF 330 1/5W J N 330
Protection Power SW ON/OFF muting PT1 2828063700 TRANS POWER 120Version M-2000 (UL/CSA) P.T (120 Version) R408, R458 3009273973 RES CF 27K 1/5W J N 27K
PT1 2828063710 TRANS POWER 220Version M-2000 (DOM) P.T (220 Version) R421-422 3009472973 RES CF 4.7K 1/5W J N 4.7K
Heatsink Temp ≥ 100˚C (212˚F) PT1 2828063720 TRANS POWER 230Version M-2000 (EUROPE) P.T (230 Version) Q401-404, 2008606104-T TR NPN KTC 3198Y KTC 3198
PC Limiter RL < 2Ω PT1 2828063730 TRANS POWER 240Version M-2000 (EUROPE) P.T (240 Version) Q451-454
Q501 2008606108-T TR NPN KTC2240BL (KTC 3200BL) KTC 2240BL VR401-402 3227075410 VR RK 16311605A213A (RMG58) 10KB
Fan Circuit –50˚C (122˚F)–60˚C (140˚F)– Q502 2028407990 TR NPN 2SC 3298A(Y), KTC4370A(Y) KTC 4370
OUTPUT B’D (4005185630)
Low-Speed – Variable – Hi-Speed Q503 2028406113 TR NPN KTD 2058Y (D880Y) D2058
R501 3009122973 RES CF 1.2K 1/5W J N 1.2K C801-804 3609104120-T CAP MA 0.1UF 100V J 0.1/100 (M)
Controls (Front) Power SW: Push up On/Push down Off R502 3009822973 RES CF 8.2K 1/5W J N 8.2K C805-806 3509103530-T CAP CE F 0.01UF 50V Z 0.01/50
R503 3009102973 RES CF 1K 1/5W J N 1K CN514-517 4465998210 TERMINAL (250) PCB TAB 250T
Attenuator: 21-position dB calibrated R801-804 3039100572-F RES MO 10 2W J N 10 2W
RY503 5528009993 RELAY VH-24H O.E.G/TAKAMISAWA T9A S1D 22-24
(Rear) Mode SW: Bridge=BTL/STEREO/PARALLEL SW101 4625996611 SW POWER (IC1350AT) ARCOLECTRIC POWER SWITCH SP1-2 4438091710 JACK SPEAKON (PCB INSERT TYPE) SPEAKON
SP3-4 4438090210 TERMINAL BINDING POST 2P SP-TER2P
Power Source AC 110V–240V, 50/60Hz INPUT B’D (4005185610)
AN101, 4428599002 WAFER YW025-02 YW025-02P
LED 1/2 B’D (4005185640)
Power Consumption 120V 1030W (1200VA) 1450W (1680VA)
AN104, AN401 4355824511 CON ASS’Y 5P ASS’Y 5P
230V–240V 950W 1300W AN201 LD601-602 2308252262 LED RED SLR-54MG R5 GRE ROHM R5GR
Weight 20kg 23kg AN404-405 4355789721 CON ASS’Y 3P VR ASS’Y 3P LD603 2308252302 LED REF SLR 54DU R5 YEL R5OR
C301-302, 3409210141-T CAP AF RSG 100UF 25V 6P 100/25 LD604 2308252222 LED REF SLR-54UR R5 RED ROHM R5RE
Dimensions 482(W) 132(H) 369(D) mm C306, C311, R601-606 3009392973 RES CF 3.9K 1/5W J N 3.9K
C351-352, R607-610 3009472973 RES CF 4.7K 1/5W J N 4.7K
Connectors Input XLR-3-31 type + 1/4” Phone (balanced), XLR C356
LED 2/2 B’D (4005185650)
Output 5-Way binding posts 2, Speakon Terminal 2 C303, C353 3529050311-A CAP CE SL 5P 50V M AXIAL 5P
C304-305, 3529220311-A CAP CE SL 22PF 50V J AXIAL 22P AN402 4355824503 CON ASS’Y 5P ASS’Y 5P
C308, LD701, LD702 2308252262 LED REF SLR-54MG R5 GRE ROHM R5GR
0dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power) C354-355, LD703 2308252302 LED REF SLR 54DU R5 YEL R5OR
* Using reactive 2Ω speakers at high power levels may cause overheating, excessive power consumption, and shutdowns. C358, LD704 2308252222 LED REF SLR-54UR R5 RED ROHM R5RE
Please note that below 2Ω the PC limiter will work. Before using 2Ω speakers in a real application, test the system completely. C359 R701-706 3009392973 RES CF 3.9K 1/5W J N 3.9K
C307, C357 3409210071-T CAP AF 10UF 50V 5P 10/50 R707-710 3009472973 RES CF 4.7K 1/5W J N 4.7K

* Specifications and design subject to change without notice for improvements.

2 3
 TOP AND BOTTOM VIEW OF P.C. BOARD

Ref No. Part No. Description Value Ref No. Part No. Description Value
C101 3409247041-T CAP AF RSG 47UF 25V 5P 47/25 R120, 3089101275 RES NFR 100 1/4W J R PHILKO FR 100
C103, C105 3409210141-T CAP AF RSG 100UF 25V 6P 100/25 R146-151,
C106-109 3409247971-T CAP AF RSG 4.7UF 50V 5P 4.7/50 R164-169
C111-112, 3609472120-T CAP MA 0.0047UF 100V J 0.0047/100 (M) R121 3079121275 RES ERD-2FCVG 121T 1/4W R FR 120
C117, C120 R122-123 3009393273 RES CF 39K 1/4W J 39K 1/4W
C114 3609473120-T CAP MA 0.047UF 100V 0.047/100 (M) R124 3079121275 RES ERD-2FCVG 121T 1/4W R FR 120
C118-119 3609273120-T CAP MA 0.027UF 100V J 0.027/100 (M) R126 3009122973 RES CF 1.2K 1/5W J N 1.2K
C122 3409247071-T CAP AF RSG 47UF 50V 6P 47/50 R127-128 3039223475 RES MO 22K 1W R 22K 1W
C123 3409810141-T CAP AF NP 100UF 25V 100/25 NP R133 3089150275 RES NFR 15 1/4W J R PHILKO FR 15
CN101, 4428599002 WAFER YW025-02 YW025-02P R134-139, 3089479275 RES NFR 4.7 1/4W J R PHILKO FR 4.7
CN104 R152-157
CN102 4428595005 LW5267/LWB0640/2.5MM-05P WAFMW5P2.54 R140-145, 3049478783 RES CE 0.47 5W J T HAN NAE 0.47 5W
CN103 4428595006 LW5267/LWB0640/2.5MM-06P WAFMW6P2.54 R158-163
CN106-108 4465998210 TERMINAL (250) PCB TAB R170-171 3089332275 RES NFR 3.3K 1/4W J R PHILKO FR 3.3K
CR102, 3509101231-A CAP CE B 100PF 50V K AXIAL 100P R172-173 3009823973 RES CF 82K 1/5W J N M-1500 82K
CR115-116 R172-173 3009124973 RES CF 120K 1/5W J N M-2000 120K
CR104 3529330311-A CAP CE SL 33PF 50V J AXIAL 33P R174 3039479572-F RES MO 4.7 2W J N 4.7 2W
CR110 3529680311-A CAP CE SL 68PF 50V J AXIAL 68P R175-176, 3009223973 RES CF 22K 1/5W J N 22K
CR113 3529050311-A CAP CE SL 5P 50V M AXIAL 5P R185
CR124-125 3509331231-A CAP CE B 330PF 50V K AXIAL 330P R178 3009184973 RES CF 180K 1/5W J N 180K
CR123 3529220311-A CAP CE SL 22PF 50V J AXIAL 22P R180 3009682973 RES CF 6.8K 1/5W J N 6.8K
D101, 2058100996 DIODE RECTIFIER LT1N4006 (4007) 1N 4006 R181 3009473973 RES CF 47K 1/5W J N 47K
D105-106, R182-183 3009822973 RES CF 8.2K 1/5W J N 8.2K
D124, D134 R186-187 3009150973 RES CF 15 1/5W J N 15
D103-104, 2058304100 DIODE IN4148 1N 4148 RY501 5528009810 RELAY VKP-31H42 31H42
D107-114, TH101 2438007993 POSISTOR PTH 9M04 BE 222TS 2F BE222TS
D119-120, TH102 2438007995 POSISTOR PTH 9M04 BH 471TS 2F BH471TS
D123 VR101 3248322220 RES SEMI CS 2.2KB 10/5 2.2KB
D116, D118 2058512190 DIODE ZENER 10V 1W (IN4740A) UZ 10BM/1W
D121-122 2058322100 DIODE 1SS145 ROHM 1SS142
D126, D125 2058100110 DIODE PS2010 PYUNG CHANG PS207
IC101 2118010232 IC NJM072D JRC NJM 072D
IC102 2118050410 IC TA7317P TOSHIBA TA 7317P
L101 2648099940 COIL INDUCTOR 1.2UM 1.2uH
Q101, Q104 2028407990 TR NPN 2SC 3298A(Y), KTC4370A(Y) KTC 4370
Q102 2028107984 TR PNP 2SA 1306A (Y), KTA1659A(Y) 2SA 1659
Q103, Q137 2008207100-T TR PNP 2SA 970BL-TPE2 2SA 970BL
Q105 2008400960 TR NPN 2SC 1567A-R MATSUSHITA 2SC 1567A
Q106 2008206997-T TR PNP KTA 949Y (KTA 1024) KEC M-1500 KTA 949Y
Q106 2008005999 TR PNP 2SA 1546 NEC M-2000 2SA 1546
Q107 2008606107-T TR NPN KTC 2229Y (KTC 3206Y) M-1500 KTC 2229Y
Q107 2008405999 TR NPN 2SC4001 NEC M-2000 2SC 4001
Q108 2028407990 TR NPN 2SC 3298A(Y), KTC4370A(Y) M-1500 2SC 4370A
Q108 2028407995 TR NPN MJE15032 (MOTOROLA) M-2000 MJE15032
Q109 2028811998 FET N-CH 2SK215 HITACHI 2SK 215
Q110 2028611998 FET P-CH 2SJ 78 HITACHI 2SJ 78
Q111 2028107984 TR PNP 2SA 1306A(Y), KTA 1659A(Y) M-1500 KTA 1659
Q111 2028107995 TR PNP MJE15033 (MOTOROLA) M-2000 MJE15033
Q121-126 2028407122 TR NPN 2SC5200 TOSHIBA (M-1500) 2SC5200
Q121-126 2028407888 TR NPN 2SC 3264 W/ACC (M-2000) 2SC3264
Q127, Q138 2008606108-T TR NPN KTC2240BL (KTC 3200BL) KTC 2240BL
Q131-136 2028107118 TR PNP 2SA1943 TOSHIBA (M-1500) 2SA1943
Q131-136 2028107944 TR PNP 2SA 1295 W/ACC (M-2000) 2SA1295
R101 3009561973 RES CF 560 1/5W J N 560
R102 3009113973 RES CF 11K 1/5W J N 11K
R103 3009331973 RES CF 330 1/5W J N 330
R104 3009121973 RES CF 120 1/5W J N 120
R105, R110, 3079151275 RES ERD-2FCVG 151T 1/4W R FR150
R129-130
R106 3009202973 RES CF 2K 1/5W J N 2K
R107 3002470953 RES CF 47K 1/5W F N M-1500 47K 1%
R107 3009303973 RES CF 30K 1/5W J N M-2000 30K
R108 3009222973 RES CF 2.2K 1/5W J N 2.2K
R109 3002180953 RES CF 18K 1/5W FN M-1500 18K 1%
R109 3009303973 RES CF 30K 1/5W J N M-2000 30K
R111-112 3009564973 RES CF 560K 1/5W J N 560K
R113 3079331275 RES ERD-2FCVG 331T 1/4W R FR 330
R114 3079680275 RES ERD-2FCVG 680T 1/4W R FR 68
R115, 3079470275 RES ERD-2FCVG 470T 1/4W R FR 47
R131-132
R116-117, 3009104973 RES CF 100K 1/5W J N 100K
R177, R179,
R184
R118-119, 3009562973 RES CF 5.6K 1/5W J N 5.6K
R125

4 5
 WIRING DIAGRAM

6 7
BLOCK DIAGRAM

8
SCHEHATIC DIAGRAM

9 10
EXPLODED VIEW OF CABINET & CHASSIS/MECHANICAL PARTS LIST

S2 S14 3WPTC 3X8B 8159340083 1 1

S13 SCREW 2BTC 3X8B 8109230083 2 2
S12 ASS'Y SCREW PM 4X8B 8095996910 8 8
S11 SCREW 2FTC 3X12B 8129230123 4 4
S10 SCREW 2BTC 3X10B 8109230103 13 13
S9 SCREW 2WPTC 3X14B 8159230143 4 4
4 S8 ASS'Y PM 4X18B 8095996930 1 1
S7 SCREW FM 4X20B 8029140203 8 8
S6 HEX MSPM 3X12Y 8099130121 34 58
22 S5 ASS'Y PM3X22B 8095997110 6 6
S4 SCREW 3BTC 4X14Y 8109340141 4 4
S3 SCREW 3BTC 4X8B 8109340083 14 14
S2 SCREW 3BTC 3X6B 8109330063 15 15

S1
S1 SCREW BM 3X6N 8009130064 5 5
M-1500 M-2000
NO. PART NAME PART NUMBER REAMRK
Q'TY

27
36 SLIDE KNOB 8545084520 1 1
35 SHIELD FENCE 6163195710 1 1
S5
34 B'D VR 4005185620 1 1
33 SPONGE 6735981710 0 1 M-2000
28 36
35 24 32 B'D LED 1/2 4005185640 1 1
23
31 B'D LED 1/2 4005185650 1 1
30 B'D AMP 4005185800 2 2
33 S3
29 B'D OUTPUT 4005185630 1 1
S6
28 B'D INPUT 4005185610 1 1
29 27 B'D POWER 4005185600 1 1
19 17
26 WASHER SPRING 0B 8309100013 1 1
18
25 NUT M10B 8209110013 1 1
21
2828063710 0 1 M-2000
24 POWER TRANS
10 S10 2828063810 1 0 M-1500

S12
23 AC CORD 4308997310 1 1
S8
S11 22 CAP RUBBER SPONGE 6715993320 0 4 M-2000
16 5568224433 1 1 E군
S7 21 CIRCUIT BREAKER
S4 5568224833 1 1 B군 EUROPE
S13
20 RUBBER FOOT 6335000610 4 4
19 BKT GUIDE 6503971810 1 1
18 BKT 046505933510 1 1
17 CORD STOPER 6518999810 1 1
8538999510(102mm) 0 2 M-2000
34 16 FAN COVER
8538999610(92mm) 2 0 M-1500
8 15 BKT (REAR) 6505936210 2 2
15 7308998510 0 2 M-2000
14 FAN
7308998320 2 0 M-1500
S14 13 6503976210 0 4 M-2000
32
13 FAN BKT
14 6505953820 4 0 M-1500
12 SPACER 6705998510 3 3
11 SPACER HOLDER 6705998410 3 3
10 DIODE 2058100998 1 1
S3 9 POWER SW 4625996611 1 1
8 BKT 6505940110 2 2
7 KNOB (CONTROL) 048543985918 2 2
6 BKT (HANDLE) 6505935710 2 2
3
5 HANDLE 048603995230 2 2
7 31 S12
2 4 TOP COVER 046123495310 1 1
30
7502089820 0 2 M-2000
3 HEAT SINK
7502089810 2 0 M-1500
26 20 046121677811 0 1 M-2000
2 CHASSIS MAIN
9 046121677821 1 0 M-1500
S2 25 1 PANEL FRONT 048602969011 1 1
S9
M-1500 M-2000
NO. PART NAME PART NUMBER REAMRK
6 S5 Q'TY
11

1
12
S6
5

11 12
ASS’Y DRAWING

13 14
NOTE NOTE