VOX

ToneLab ST
SERVICE MANUAL

TABLE OF CONTENTS
ASSEMBLY SKETCH 2-3
BLOCK DIAGRAM 4
SCHEMATIC DIAGRAM: 5
TEST MODE: 6
PARTS LIST: 7-8

Issued: Mar.18, 2009

Ver.1.0
© 2009 VOX AMPLIFICATION LTD.
Tone Lab ST TEST MODE

1st Release Feb., 12 2009 murakita

1. EXP PEDAL TEST

[How to start]
Set the AMP/LINE switch to [F], pressing the [TAP] and [CABINET] turn the power on.
Press the [UP] switch.

Step on and move the pedal, when the pedal is up “00” is displayed in the 8 segments LED,
when the pedal is down position, “7F” is displayed, this is OK.
When the pedal is up position, “00” is not displayed in the 8 segments LED,
When the pedal is down position, “7F” is not displayed, and then you need do following calibration.

2. EXP PEDAL CALIBRATION

[How to start]
Pressing the [EXIT/TUNE] and the [EXT PARAM] switch, turn the power on.

[How to adjust]
Move the pedal adding weight (25kg) to the down position, move the pedal using hand to the up position
until the pedal stops.
Move the pedal without adding weight to the down position until the pedal stops.
Press the [WRITE] switch.
Turn the power off.
Do the pedal test again.

3. TUBE SEND LEVEL ADJUST

After changed tube, do following adjustment.
[How to start]
Set the [AMP/LINE] switch to the [F], set the AMP selector to the [CLEAN].
Pressing the [TAP] and the [EXIT/TUNE] switch, turn the power on.
Confirm that “1” is displayed in the 8 segments LED and other LEDs are turned off.

[Adjustment]
Set the AMP selector to [US BLUES].
Input the sine signal of 1kHz +5dBm(1.378Vrms) to INPUT jack.
Wait till the tube becomes warm (1minutes).
From the lower case, rotate the trimmer volume so that only the green TUNER LED is lighting.
(From the hole of the lowercase, rotate the trimmer volume using a driver.)
When only the green TUNER LED is lighting, the adjustment has completed.
Turn the power off.
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VOX ToneLab ST Parts List

Part Number Category Part Name Location Reference Q'TY
500320012334 DSP MB87R1420PMC-G-BND FRONT REAR PCB IC14 1
500320011256 CPU M38039GCH-509HP U0 FRONT REAR PCB IC9 1
500324022114 USB/1394 IC TAS1020BPFBR FRONT REAR PCB IC10 1
500324018021 A/D Converter AK5358AET-E2 FRONT REAR PCB IC4 IC11 2
500324018020 D/A Converter AK4384ET-E2 FRONT REAR PCB IC6 IC16 2
500320049013 EEPROM M24C64-WDW6TP (X07500) FRONT REAR PCB IC17 1
530000001374 EEPROM AK93C75AV FRONT REAR PCB IC2 1
530000000183 SRAM IC CS18LV02563AC-70 FRONT REAR PCB IC5 1
530000000189 RESET IC IC KIA7125FV FRONT REAR PCB IC1 1
530000001098 REGULATOR IC UTC UR3325 FRONT REAR PCB IC8 1
530000001375 REGULATOR IC LM1117MPX-5.0 FRONT REAR PCB IC15 1
530000001376 REGULATOR IC MC34063AD FRONT REAR PCB IC7 1
530000000194 OPAMP IC NJM2872AF FRONT REAR PCB IC3 1
530000001377 USB FILTER USBUF01W6 FRONT REAR PCB IC18 1
530000001378 DIGITAL TR DTA114EUA FRONT REAR PCB DT4-7 4
530000001096 DIGITAL TR DTC114EUA FRONT REAR PCB DT8 - 15 8
530000001379 TRANSISTOR KTC2025 FRONT REAR PCB Q6 1
530000000275 TRANSISTOR TR KTC2875 FRONT REAR PCB Q4,Q5,Q8 3
530000000279 TRANSISTOR TR KTC4075 FRONT REAR PCB Q2,Q3,Q17 3
530000000271 TRANSISTOR TR KTA2014 FRONT REAR PCB Q12 1
D1,D2,D3,D7,D11-D14,D16-
530000001444 DIODE 1N4148 LL-34 TYPE FRONT REAR PCB 17
D24
530000001380 INDUCTOR HH-1M1608-600JT FRONT REAR PCB L1-L4,L8-L12, L17, L20-21 12
530000001381 TRIMER VR KVSF689AC503 50k B FRONT REAR PCB VR2 1
530000001382 POTENTIONMETER(11C)VR RV160-40G-13S-B10K-C11(11C) FRONT REAR PCB VR4,VR10 2
530000001445 POTENTIONMETER(11C)VR RV160-40-13S-B10K-C11 (11C) FRONT REAR PCB VR12 1
530000001446 POTENTIONMETER VR RV160-40-13S-B10K-C0 FRONT REAR PCB VR5 -VR8, VR11,VR14 6
530000001383 POTENTIONMETER VR RV160-40G-13S-B10K-C0 FRONT REAR PCB VR9, VR13 2
530000001384 POTENTIONMETER VR RV1604-12SP-B10K FRONT REAR PCB VR16 1
530000000277 TRANSISTOR TR KTC3198GR FRONT REAR PCB Q7,Q14 2
530000001385 FET KTK117GR FRONT REAR PCB Q1 1
530000001386 DIODE 1SS133 FRONT REAR PCB D4 1
530000001387 LED(3mm BI-COLOR) 3RG9HW-1-A FRONT REAR PCB LED4 1
530000001226 LED SUPPORT LED SUPPORT SW 4009 - 9MM FRONT REAR PCB LD4 1
530000001388 LED(3mm RED) 3024SRD4 FRONT REAR PCB LED9-10,LED12,LED16-18 6
530000001225 LED SUPPORT LED SUPPORT SW 4010 - 10MM FRONT REAR PCB LD9-10, LD12, LD16-18 6
530000001389 HLBW240R-AF1 FRONT REAR PCB LED2 1
530000001390 SEGMENT SUPPORT 5504 - 4MM FRONT REAR PCB LD2 4
530000001391 SCHOTTKY DIODE 1N5819 FRONT REAR PCB SD1 1
530000001203 ZENER DIODE 1N5243B,T FRONT REAR PCB ZD1 1
530000000150 DIODE D 1N4002 FRONT REAR PCB D5,D31 2
530000000158 DC JACK DC JACK HTJ-020-04A FRONT REAR PCB U2 1
530000001392 PHONE JACK HTJ-035-19DB FRONT REAR PCB J3 1
530000001393 PHONE JACK EPJ-BBB-6.5P FRONT REAR PCB J2 1
530000000650 PHONE JACK PHONE JACK EPJ-BNB-6.5MONO FRONT REAR PCB J1 1
530000001394 USB JACK USB-B TYPE PCB(F) 90C BLACK FRONT REAR PCB CN4 1
530000001087 CRYSTAL CRYSTAL 8.00MHZ FRONT REAR PCB X2 1
530000001395 CRYSTAL HC-49US 6.00MHZ FRONT REAR PCB X3 1
530000000137 INDUCTOR BEAD CORE SAT2550L FRONT REAR PCB L6,L7 2
530000001396 INDUCTOR AL04TO101K FRONT REAR PCB L5 1
530000001397 SLIDE SWITCH ASS-2401A(K:7) FRONT REAR PCB SW13 1
530000000265 TACT SW TACK SW ATS-1230B (K=9.5MM) FRONT REAR PCB SW1,2,4,5,6,8,9,10,12 9
530000001398 FLAT CABLE UL2877 AWG26, 9P, 100MM FRONT REAR PCB J14-J15 1
530000001399 HARNESS 5P 150MM, BLK/WHT FRONT REAR PCB J40-J41 1
530000001400 HARNESS 10P-5P,100MM, RED/WHT FRONT REAR PCB J8-J9 1
530000001401 HARNESS 3P,150MM, BLK/WHT FRONT REAR PCB J16-J17,J42-J43 2
530000001402 HARNESS 3P, 200MM, BLK/WHT FRONT REAR PCB J4-J5 1
530000001403 HARNESS 3P, 100MM, BLK/WHT FRONT REAR PCB J30-J31 1
530000001404 HARNESS 2P, 100MM, RED/BLK FRONT REAR PCB J6-J7 1
530000001405 CONNECTOR LWL0640 2PIN FRONT REAR PCB J32 1
530000000623 PCB BRACKET FRONT REAR PCB PRE0031 2
530000000282 VACUUM TUBE VACUUME TUBE 12AX7EH PEDAL FOOT PCB Q15 1
530000001406 TUBE SOCKET GZC9-Y 9P(D) PEDAL FOOT PCB V1 1
530000001407 LED(3mm RED) 3024SRD4 PEDAL FOOT PCB LED5-6,LED14-15 4
530000001408 LED(3mm ORANGE) 3024SOD PEDAL FOOT PCB LED1 1
530000001409 LED(5mm GREEN) 5013SGD4 PEDAL FOOT PCB LED11 1
530000001410 LED(5mm RED LED) 5014SRD4 PEDAL FOOT PCB LED13 1
530000001411 LED SUPPORT 5519 - 19MM PEDAL FOOT PCB LD5-6, LD14-15 4
 2/2

Part Number Category Part Name Location Reference Q'TY

530000001412 LED SUPPORT 5517 - 17MM PEDAL FOOT PCB LD11 1
530000001413 PUSH SWITCH APS2284N PEDAL FOOT PCB SW3,SW7 2
530000001414 CONNECTOR FA0640-07P PEDAL FOOT PCB J20 1
530000001415 VR F-11KH-1 B10K L15FC*7(K) PEDAL FOOT PCB VR15 1
530000000623 PCB BRACKET PRE0031 2
530000001416 RACK GEAR POM TLST0007 1
530000001417 FRONT/REAR PCB ASSY TONELAB ST (1)
530000001418 PEDAL/FOOT PCB ASSY TONELAB ST (1)
530000000831 POWER SWITCH APS-1101VO POWER SW 1
530000001419 FOOT SWITCH AS-02 FOOT SWITCH 2
530000001420 TOP COVER TONELAB ST TOP COVER 1
530000001421 BOTTOM COVER TONELAB ST 1
530000001443 CHIKEN SMALL KNOB 6
530000001127 ROUND KNOB 5
530000000250 ROUND KNOB ABS 1
530000000206 LED BUSHING 1
530000000145 CORD HOCK ABS BLACK 1
530000001422 PCB BRACKET "B" 2
530000001423 WINDOW RED, 25.7X21.7X3T, ACRYL 1
530000001249 RUBBER FOOT SBR 6MM 4
530000001424 PINION GEAR 1
530000001425 CIRCLE KNOB 4
530000001426 ELLIPTIC SW KNOB 5
530000001427 TUBE SUPPORT 2
530000001428 TUBE SUPPORT SPONGE 20*18*1t BLACK 2
530000001429 AL FOIL "B" 27*20*0.05t 1
530000001430 PEDAL 1
530000001431 PEDAL GUIDE 2
530000001432 RUBBER PAD 1
530000001433 VOX PLATE 1
530000001434 PEDAL SPACER "A" POM 5.2(IN)*12(OUT)*8t, BK 2
530000001435 PEDAL SPACER "B" POM 5.2(IN)*10(OUT)*1.2t, BK 4
530000001436 RUBBER CUSHION_TOP 1
530000001437 RUBBER CUSHION_BOTTOM 1
530000000132 ADAPTOR ADAPTOR 100V DA5 100V (1)
530000000133 ADAPTOR ADAPTOR 120V DA5 120V US CN EX (1)
530000000134 ADAPTOR ADAPTOR 230V(GE) DA5 230V (1)
530000000135 ADAPTOR ADAPTOR 230V(UK) DA5 230V UK (1)