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Dec.2004
GT-8
SERVICE NOTES
TABLE OF CONTENTS
CAUTIONARY NOTES........................................................ 2 SPECIFICATIONS................................................................. 2 LOCATION OF CONTROLS............................................... 4 LOCATION OF CONTROLS PARTS LIST ....................... 6 EXPLODED VIEW ................................................................ 8 EXPLODED VIEW PARTS LIST ....................................... 10 WIRING DIAGRAM ........................................................... 11 WIRING DIAGRAM PARTS LIST .................................... 11 PARTS LIST.......................................................................... 12 CHECKING THE VERSION NUMBER ........................... 17 USERS DATA SAVE AND LOAD.................................... 17 FACTORY RESET INSTRUCTIONS ................................. 18 SYSTEM SOFTWARE UPDATING INSTRUCTIONS....19 TEST MODE.......................................................................... 19 BLOCK DIAGRAM ............................................................. 24 CIRCUIT BOARD (MAIN SHEET) ................................... 26 CIRCUIT DIAGRAM (MAIN SHEET 1/3) (Power) .......30 CIRCUIT DIAGRAM (MAIN SHEET 2/3) (Jack) ...........32 CIRCUIT DIAGRAM (MAIN SHEET 2/3) (Digital) ......34 CIRCUIT BOARD (SW SHEET) ......................................... 36 CIRCUIT DIAGRAM (SW SHEET) ................................... 38 ERROR MESSAGES............................................................. 40
Issued by RJA
Copyright © 2004 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
17058309E0
Printed in Japan (0500) (AS)
Dec.2004
CAUTIONARY NOTES
User data status
User data status after each of the following processes is described below. Whenever carrying out procedures that involve deleting or erasing user data, always be sure to back up the user data to some form of external media (refer to Saving and Loading Data).
Output Impedance
OUTPUT: 2 k SEND: 2 k
Digital Output
EIAJ CP1201, S/P DIF
Dynamic Range
100 dB or greater (IHF-A)
Process Checking Version number Factory Reset System Update Test Mode
User Data Preserved Deleted Preserved Preserved
Controls
< Front Panel > PATCH LEVEL knob (PREAMP/SPEAKER) TYPE knob GAIN knob BASS knob MIDDLE knob TREBLE knob PRESENCE knob LEVEL knob On/Off button TYPE VARIATION button CHANNEL button SOLO button SPEAKER button (OVERDRIVE/DISTORTION) TYPE knob
*
Executing Test Mode during Factory Reset deletes the user data.
PARTS LIST
Due to one or more of the following reasons, parts with parts code ******** cannot be supplied as service parts. · · · Part supplied only as a component in a complete assembly Copyright does not permit the part to be supplied Part is sold commercially
CIRCUIT BOARD
NIU meant that "NOT IN USE " there don't set any contents in the Circuit Diagram. There has silk-screen only in the Circuit Board.
DRIVE knob LEVEL knob On/Off button TYPE VARIATION button (DELAY) FEEDBACK knob LEVEL knob
SPECIFICATIONS
GT-8: Guitar Effects Processor
AD Conversion
24 bit + AF method
On/Off button TAP button (CHORUS) LEVEL knob On/Off button (REVERB) LEVEL knob On/Off button (COMP) On/Off button (EQ) On/Off button (WAH) On/Off button (LOOP) On/Off button (FX-1) On/Off button (AMP CTL) On/Off button (FX-2) On/Off button (MASTER) MASTER button PATCH/VALUE dial PARAMETER buttons OUTPUT SELECT button EXIT button WRITE button SYSTEM button EFFECT CHAIN button NAME button
DA Conversion
24 bit
Sampling Frequency
44.1 kHz
Program Memories
340: 140 (User) + 200 (Preset)
Nominal Input Level
INPUT: -10 dBu RETURN: -10 dBu
Input Impedance
: 1 RETURN: 220
Nominal Output Level
OUTPUT: 0 dBu SEND: -10 dBu
2
GT-8
TUNER/BYPASS button CTL/EXP button VARIABLE button MANUAL button BANK pedals Number pedals CTL pedal Expression pedal Expression pedal switch OUTPUT LEVEL knob POWER switch * * * 0 dBu = 0.775Vrms In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice. AF Method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.
Options
Foot Switch: FS-5U, FS-5L Dual Foot Switch: FS-6 Expression Pedal: EV-5 (Roland), FV-300L Foot Switch Cable: PCS-31 (Roland) (1/4 inches Phone Plug (stereo) - 1/4 inches Phone Plug (mono) x 2) MIDI IMPLEMENTATION ENGLISH: (#17041558) JAPANESE: (#17041557)
Display
16 characters, 2 lines (backlit LCD) 2 characters, 7 segment LED
Connectors
INPUT jack OUTPUT jacks L (MONO)/R PHONES jack SEND jack RETURN jack AMP CONTROL jack SUB EXP PEDAL/SUB CTL PEDAL1,2 jack DIGITAL OUT connector (coaxial) MIDI connectors IN/OUT AC Adaptor jack
Power Supply
AC 14 V; Supply AC adaptor (BOSS BRC series)
Current Draw
650 mA
Dimensions
515 (W) x 261 (D) x 75 (H) mm 20-5/16 (W) x 10-5/16 (D) x 3 (H) inches Maximum height: 515 (W) x 261 (D) x 107 (H) mm 20-5/16 (W) x 10-5/16 (D) x 4-1/4 (H) inches
Weight
4.8 kg/10 lbs 10 oz (excluding AC Adaptor)
Accessories
AC Adaptor BRC-240AT (#G2457142) BRC-230T (#G245714101) BRC-120T (#G2457144) BRC-100T (#G2457143) Owner's Manual English:(#G6047002) Japanese:(#G6047001) Read This First (leaflet) (#G6047005) USER Patch List (#G6027108) PRESET PATCH LIST (#G6027107) Roland Service (information sheet) (#********)
3
Dec.2004
GT-8
LOCATION OF CONTROLS
fig.haichi.eps
1.2. 4. 5.
6.
7. 8.
9.
1.3.
10.11.12. 15.16.14. 13.14. 28. 17.18. 29.
17.19. 20. 21.22.
30.31.32.33. 34. 23. 24. 44. 25. 26. 27. 48. 50.51. 53.
35.36.37.38. 39.40.41.
42.43.
45.46.
47.
49.
52.
5
Dec.2004
LOCATION OF CONTROLS PARTS LIST
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 PART CODE G2477122 F3279803 F3279802 G2237113 G2237112 75D912C000 F5029412 G2567119 F5029405 F2477101 01905467 G2567118 G247751301 F3129306 G247751001 F5029117 1502928100 H2369401 H2369431 G2357112 G2637107 G2567121 G2217138 G2217139 G2217140 G2217143 G2217144 G2217142 G2217141 G2187602 G2357109 G2177103 03344723 G2227301 75D9122S00 G2187904 F3279782 G2357111 G1889117 G2147806 G2147874 G2357120 75D912E000 13449155MF 01340412 F3229161 13449150MF F3449121 13429825 12499175 F3129307 13449728 F2367103 CATEGORY KNOB,BUTTON POTENTIOMETER POTENTIOMETER MISCELLANEOUS MISCELLANEOUS CASING DISPLAY UNIT MISCELLANEOUS DISPLAY UNIT KNOB,BUTTON ENCODER MISCELLANEOUS KNOB,BUTTON SWITCH KNOB,BUTTON DIODE DIODE MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS CASING CASING MISCELLANEOUS SWITCH CASING CASING MISCELLANEOUS POTENTIOMETER MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS MISCELLANEOUS CASING CASING JACK,EXT TERMINAL KNOB,BUTTON POTENTIOMETER JACK,EXT TERMINAL JACK,EXT TERMINAL JACK,EXT TERMINAL KNOB,BUTTON SWITCH JACK,EXT TERMINAL MISCELLANEOUS PART NAME R-KNOB POTENTIOMETER 11 CLICKS 50KB POTENTIOMETER NO CLICK 50KB GUARD PLATE GUARD TOP COVER 7SEG LED DISPLAY COVER LCD DR-KNOB ROTARY ENCODER ESCUTCEON VGA KEYTOP S WITHOUT LENS SWITCH VGA KEYTOP S BLACK WITH LENS LED LED (RED) SPACER 3X6X10 LED SPACER VR PLATE RUBBER SW RUBBER SW ESCUTCHEON PEDAL LABEL(1) PEDAL LABEL(2) PEDAL LABEL(3) PEDAL LABEL(4) PEDAL LABEL(CTL) PEDAL LABEL(DOWN) PEDAL LABEL(UP) SWITCH PEDAL PEDAL FOOT SUPPORT SPRING TACT SWITCH PEDAL ESCUTCHEON VR PEDAL UNIT PEDAL HOLDER POTENTIOMETER CUSHION R PIN STAY STAY BOLT HOLDER FOOT BOTTOM COVER PHONE JACK (MONO) P R-KNOB 9M/M ROTARY POT. JACK (STEREO) YKC21-3117 MIDI CONNECTOR BUTTON PUSH SWITCH ADAPTOR JACK CORD HOOK DESCRIPTION RD901-40-125F-B54-11D RD901-40-125F-B54-00D Q'TY 15 2 13 1 1 1 1 1 1 1 1 1 12 32 20 20 8 7 1 1 1 1 1 1 1 1 1 1 1 7 7 7 7 7 1 1 1 1 1 1 2 5 1 5 1 1 3 1 1 1 1 1 1
A-552SR BW LMC-SSC2K16DLNY-H01 EVE GC1 F20 24B
SKQKAB L-312LRD L-34HDSL 3-2
SKQKAKD010 INC. VR PLATE RK11K1140(10K SPECIAL B-CURVE)
H=5 HTJ-064-12I SF-A BLK/LCG RK09K12A0 (50KAX2) HTJ-064-12D RCA (PIN) JACK YKF51-5054 2PZ JSPUE001A SDKLA1-B HEC0740-010010
6
GT-8
7
Dec.2004
GT-8
EXPLODED VIEW
fig.bunkai.eps
33 a 8 r 25 4 10 s 7 28 27 3 23 o k 26 13 18 14 24 15 19 k 29 b c 31 32 41 30 42 n 30 q 33 p
6 5 16
34 17 I 2 1 35
40 h
I
36
I
37 k j
21 21
I
22
d
e 12 38 k k 9 20 21 20 20 21 20 11 m f g 39
9
Dec.2004
EXPLODED VIEW PARTS LIST
[Parts]
No. PART CODE PART NAME 1 75D912C000 TOP COVER 2 75D912E000 BOTTOM COVER 3 G2237112 GUARD 4 G2237113 GUARD PLATE 5 G2637107 RUBBER SW 6 G2567121 RUBBER SW ESCUTCHEON 7 G2357120 FOOT 8 G2567119 DISPLAY COVER 9 12499175 BUTTON 10 F2477101 DR-KNOB 11 01340412 P R-KNOB 12 F2367103 CORD HOOK 13 G2217138 PEDAL LABEL(1) 14 G2217139 PEDAL LABEL(2) 15 G2217140 PEDAL LABEL(3) 16 G2217143 PEDAL LABEL(4) 17 G2217144 PEDAL LABEL(CTL) 18 G2217141 PEDAL LABEL(UP) 19 G2217142 PEDAL LABEL(DOWN) 20 G247751001 VGA KEYTOP S BLACK WITH LENS 21 G247751301 VGA KEYTOP S WITHOUT LENS 22 G2147806 STAY 23 G2477122 R-KNOB 24 G2567118 ESCUTCEON 25 G2227301 PEDAL ESCUTCHEON 26 G2187602 SWITCH PEDAL 27 G2177103 SUPPORT SPRING 28 G2357109 PEDAL FOOT 29 G2187904 PEDAL HOLDER 31 G2357111 CUSHION R 32 G1889117 PIN STAY 34 F5029405 LCD 35 75D913M000 MAIN SHEET ASSY 36 75D913S000 SW SHEET ASSY 37 75D913S000 SW SHEET ASSY 38 75D913S000 SW SHEET ASSY 39 75D913S000 SW SHEET ASSY 40 75D913S000 SW SHEET ASSY 41 G2147874 BOLT HOLDER 42 75D9122S00 VR PEDAL UNIT NOTE: `VR PEDAL UNIT' includes the following parts. 30 ******** VR PEDAL 33 G2357112 VR PLATE DESCRIPTION Q'TY 1 1 1 1 1 1 5 1 1 1 1 1 1 1 1 1 1 1 1 20 12 1 15 1 7 7 7 7 1 1 1 1 1 1 1 1 1 1 2 1 1 1
H=5 JSPUE001A SF-A BLK/LCG
LMC-SSC2K16DLNY-H01
INC. VR PLATE
[Screw]
No. a b c d e f g h I j k m n o p q r s PART CODE H5029854 ******** ******** ******** ******** H5039510 H5039112 H5029843 H5019803 H5019130 H5029331 H5029330 H5019428 H5039520 H5030008 H5039122 H5039515 H5019434 PART NAME BOLT M3X12 NUT M9 (with ENCODER) WASHER M9 (with ENCODER) NUT M9 (with POT.) WASHER M9 (with POT.) NUT M9X12X2 (with PHONE JACK) WASHER M9 (with PHONE JACK) SCREW 2.3X8 SCREW 3X8 SCREW M3X6 SCREW 3X8 SCREW M3X8 SCREW M3X6 M9 NUT HEX BOLT M6X85 PLAIN WASHER NUT M6 SCREW M2.6X8 DESCRIPTION HEX BUTTON FENI Q'TY 6 1 1 1 1 8 8 1 20 5 21 3 10 15 1 2 1 1
FENI BINDING TAPTITE P ZC BINDING P-TIGHT FECM PAN MACHINE W/SW+PW ZC BINDING S-TIGHT FEBZC BINDING TAPTITE P BZC PAN MACHINE W/SW+SMALL PW BZC BZC 6X13X1 BZC U BZC BINDING TAPTITE P BZC
10
GT-8
WIRING DIAGRAM
fig.haisen.eps
WIRING 12P CN5 SW2 BOARD ASSY
5
CN2 WIRING 7P CN9
3 2
WIRING 13P CN8
WIRING 8P CN7
4
RIBBON 7P 6 CN3 SW3 BOARD ASSY
SW1 BOARD ASSY CN6 RIBBON 3P 8 CN4 ENC BOARD ASSY CN4 CN3 CN2
1
CN1
CN6
CN5
EXP BOARD ASSY 7 CN1 WIRING 3P
MAIN SHEET ASSY LCD
WIRING DIAGRAM PARTS LIST
NO 1 2 3 4 5 6 7 8 PART CODE G3467180 G3467176 F3467039 G3467178 F3467038 G3477156 G3467175 G3477146 PART NAME LCD WIRING WIRING WIRING WIRING WIRING RIBBON CABLE WIRING RIBBON CABLE DESCRIPTION 16P L=160MM 7P P=2MM L=115MM 13P P=2MM L=65MM 8P P=2MM L=65MM 12P P=2MM L=120MM 7P P=2MM L=140MM 3P P=2MM L=115MM 3P L=40X5X5 MM P=2MM Q'TY 1 1 1 1 1 1 1 1
11
Dec.2004
PARTS LIST
fig.part1e
SAFETY PRECAUTIONS: The parts marked have safety-related characteristics. Use only listed parts for replacement.
Due to one or more of the following reasons, parts with parts code ******** cannot be supplied as service parts. · Part supplied only as a component in a complete assembly · Copyright does not permit the part to be supplied · Part is sold commercially
NOTE: The parts marked # are new. (initial parts)
The description "Q'TY" means a necessary number of the parts per one product.
CASING # G2357120 FOOT H=5 75D912E000 BOTTOM COVER G2227301 PEDAL ESCUTCHEON G2357109 PEDAL FOOT G2187602 SWITCH PEDAL 75D912C000 TOP COVER 75D9122S00 VR PEDAL UNIT INC. VR PLATE NOTE: `VR PEDAL UNIT' includes the following parts. ******** VR PEDAL G2357112 VR PLATE 5 1 7 7 7 1 1 1 1
#
#
KNOB,BUTTON 01340412 12499175 F2477101 G2477122 G247751001 G247751301 P R-KNOB BUTTON DR-KNOB R-KNOB
VGA KEYTOP S BLACK WITH LENS VGA KEYTOP S WITHOUT LENS
SF-A BLK/LCG JSPUE001A
1 1 1 15 20 12
SWITCH 03344723 F3129306 TACT SWITCH SWITCH SKQKAKD010 SKQKAB SW1,SW2,SW3,SW4,SW5,SW6,SW7 on SW SW8,SW9,SW10,SW11,SW12,SW13,SW14,S W15,SW16,SW17,SW18,SW19,SW20,SW21, SW22,SW23,SW24,SW25,SW26,SW27,SW28 ,SW29,SW30,SW31,SW32,SW33,SW34,SW3 5,SW36,SW37,SW38,SW39 on SW SW1 on MAIN 7 32
F3129307
PUSH SWITCH
SDKLA1-B
1
JACK,EXT TERMINAL 13429825 # F3449121 13449155MF 13449150MF 13449728
MIDI CONNECTOR YKC21-3117 PHONE JACK (MONO) JACK (STEREO) ADAPTOR JACK
YKF51-5054 2PZ RCA (PIN) JACK HTJ-064-12I HTJ-064-12D HEC0740-010010
JK7 on MAIN JK9 on MAIN JK1,JK3,JK4,JK5,JK6 on MAIN JK2,JK8,JK10 on MAIN JK11 on MAIN
1 1 5 3 1
DISPLAY UNIT F5029405 F5029412 LMC-SSC2K16DLNY-H01 A-552SR BW LCD 7SEG LED LED31 on SW 1 1
PWB ASSY # #
75D913M000 75D913S000
MAIN SHEET ASSY SW SHEET ASSY
1 1
IC F5199520 F5199108 03785378 15289123 F5199109 03785134 F5229704 F5289102 F5189105 F5289104 ******** 02231767 03347056 03784256 S-812C33AY-Z-G NJM2374AM-TE1 UPD442012AGY-BB85X-MJH M51953AFP-600C BA17805FP TLP172A PC400T NJM2100M 8P SOP TC75S51F M5238FP BM29LV800BA-70PFTN-SFKE1 RA0A-101 (TC223C080AF-101) LC32V4265CT-25-TLM-E CS8406-CZ ZR REGULATOR IC(SWITCHING REGULATOR) IC (SRAM) IC (RESET) IC (REGULATOR) IC (PHOTO RELAY) IC (PHOTO COUPLER) IC (OP.AMP) IC (OP AMP) IC (JFET OP AMP) IC (FLASH MEMORY/BLANK) IC (DSP) IC (DRAM) IC (DIF/TRANSMITTER) IC31 on MAIN IC32 on MAIN IC19 on MAIN IC34 on MAIN IC30 on MAIN IC37 on MAIN IC16 on MAIN IC2,IC8 on MAIN IC23 on MAIN IC1 on MAIN IC25 on MAIN IC21,IC20 on MAIN IC24 on MAIN IC27 on MAIN 1 1 1 1 1 1 1 2 1 1 1 2 1 1
# # # # # # #
#
12
GT-8
IC # # # # # # # # # #
F5249101 F5249134 F5279720 F5249128 F5249129 F5279311 F5249135 F5279315 F5279307 F5289106 15189261 02451434 03342312 02678945
HD74HC4051P TC74HC08AF TC74VHC138F TC74VHC574FT(EL) TC74VHCT574AF TC7SH04F TC7SH04FU TC7SH32FU TC7W04F M5216FP M5218AFP-600E AK4552VT HD6412312SVF BU2090
IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (CMOS) IC (BIPOLAR OP AMP) IC (BIPOLAR OP AMP) IC (AD/DA) IC (16BIT CPU) IC
IC4,IC6 IC26 on MAIN IC13 on MAIN IC11,IC14 on MAIN IC12,IC15 on MAIN IC28 on MAIN IC35,IC39 on MAIN IC33,IC36 on MAIN IC18 on MAIN IC6 on MAIN IC7,IC5 on MAIN IC3,IC9 on MAIN IC22 on MAIN IC1,IC2,IC3,IC5
2 1 1 2 2 1 2 2 1 1 2 2 1 4
TRANSISTOR G3467176 F5309115 15309104 F5309602 15319107 F5129405 F5319602 F5329529 7P P=2MM L=115MM 2SA1241-Y 2SA1586-GR(TE85R) 2SB1182 2SC4116-GR(TE85R) 2SC4738GR 2SD1758 RN1441 WIRING TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR CN9 on SW Q10 on MAIN Q6,Q5 on MAIN Q12 on MAIN Q8 on MAIN Q9 on MAIN Q11 on MAIN Q1,Q2,Q3,Q4,Q7,Q13,Q14,Q15 on MAIN 1 1 2 1 1 1 1 8
#
DIODE F5339318 15019126 RD13ESAB2 1SS133 T-77 ZENER DIODE SWITCHING DIODE D12,D11 on MAIN D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D1 2,D13,D14,D15,D16,D17,D18,D19,D20,D21, D22,D23,D24,D25,D26,D27,D28,D29,D30,D 31,D32,D33,D34,D35,D36,D37,D38,D39 on SW LED1,LED2,LED3,LED4,LED5,LED6,LED7, LED8 LED10,LED11,LED12,LED13,LED14,LED15 ,LED16,LED18,LED19,LED20,LED21,LED2 2,LED23,LED24,LED25,LED26,LED27,LED 28,LED29,LED30 D7,D8,D10,D13 on MAIN D1,D2,D3,D4,D6,D14 on MAIN DA4,DA5 on MAIN D5 on MAIN D9 on MAIN 2 39
1502928100 F5029117
L-34HDSL L-312LRD
LED (RED) LED
8 20
F5019203 15339119 15339120 02783023 F5339137
1N4004 1SS-352 1SS302 RB500V-40 SS14 VF=0.45V
DIODE DIODE DIODE DIODE DIODE
4 6 2 1 1
RESISTOR F5419707 F5419705 F5419706 F5399909 F5399127 F5399912 F5429395 F5399115 F5399916 F5399918 F5399150 F5399919 F5399917 F5399111 F5399913 F5399133 F5399920 F5399119 F5399195 F5399158 F5399914 F5399116 F5399166 F5399139 F5399120 F5399129 F5399104 F5399170 F5399140 CRN34101J CRN34103J CRN34104J 0.68 (1/2W) RL2010JR-070R68 1.2K J 1.8K (F-RANK) 10 (0805SIZE 1/10W) 100 J 100K (F-RANK) 12K (F-RANK) 18K J 1M(F-RANK) 22 (1/2W) 22 J 3K (F-RANK) 4.7K J 4.7M(F-RANK) 470J 470K J 47K J 6.8KF 82K J 82K J 1.8K 150 1.5K J 10 J 100K J 10K J RESISTOR ARRAY RESISTOR ARRAY RESISTOR ARRAY RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR MTL.FLM RESISTOR MTL.FLM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR RA3,RA4,RA6,RA9,RA15,RA18 on MAIN RA1,RA2,RA7,RA14,RA17,RA21,RA22,RA2 6 on MAIN RA5,RA8 on MAIN R122 (1.00 ~ 1.99Lot),R120 (2.00Lot ~) R43,R1 on MAIN R125 on MAIN R118,R126,R129 on MAIN R73,R86 on MAIN R5,R48 on MAIN R4,R8,R47,R55 on MAIN R46,R3 on MAIN R90 on MAIN R77 on MAIN R79 on MAIN R124 on MAIN R78,R81,R95,R96,R100,R101,R102 on MAIN R91 on MAIN R69,R115 on MAIN R44,R94 on MAIN R18,R21,R29,R32,R37,R38,R39,R114,R117 on MAIN R9,R58 on MAIN R71 on MAIN R27,R16 on MAIN R128 on MAIN R111 on MAIN R119,R127 on MAIN R10,R59,R93 on MAIN R24,R35,R63,R64,R85,R116 on MAIN R2,R6,R12,R14,R17,R20,R25,R28,R31,R36,R4 1,R42,R45,R49,R52,R53,R57,R66,R72,R76,R8 2,R83,R87,R88,R89,R134,R141,R142,R148,R1 49,R153,R154,R155,R156 on MAIN 6 8 2 1 2 1 3 2 2 4 2 1 1 1 1 7 1 1 2 9 2 1 2 1 1 2 3 6 34
#
# # #
# #
13
Dec.2004
RESISTOR F5399128 F5399200 F5399130 F5399190 F5399118 F5399107 F5429374 F5429375 F3829254 13749787 1K J 1M J 2.2K J 220K J 330 75 33K OHM F RANK (1%) 47K OHM F RANK (1%) 47OHM(2W) 390 (1/6W) MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR CHIP RESISTOR (1608 TYPE) CHIP RESISTOR CARBON RESISTOR CARBON RESISTER R22,R23,R33,R34,R60,R61,R80,R84,R110,R1 21,R160,R161,R162 on MAIN R7 on MAIN R70,R123 on MAIN R50 on MAIN R26,R40,R75 on MAIN R113 on MAIN R56,R62 on MAIN R54,R65 on MAIN R13,R15 on MAIN R1,R2,R3,R4,R5,R6,R7,R8,R10,R11,R12,R13, R14,R15,R16,R18,R19,R20,R21,R22,R23,R24, R25,R26,R27,R28,R29,R30 R31,R32,R33,R34,R35,R36,R37,R38,R39,R40, R41,R42,R43,R44 on SW 13 1 2 1 3 1 2 2 2 28
#
#
13749789
470 (1/6W)
CARBON RESISTER
14
POTENTIOMETER F3279802 F3279803 F3279782 F3229161
RD901-40-125F-B54-00D RD901-40-125F-B54-11D
RK11K1140(10K SPECIAL B-CURVE
POTENTIOMETER NO CLICK 50KB POTENTIOMETER 11 CLICKS 50KB
#
RK09K12A0 (50KAX2)
POTENTIOMETER 9M/M ROTARY POT.
VR3,VR4,VR5,VR6,VR7,VR8,VR9,VR11,VR 12,VR13,VR14,VR15,VR16 on SW VR2,VR10 on SW VR1 on SW VR1 on MAIN
13 2 1 1
CAPACITOR # F3587451 13649101 02341489 13519694 F5359732 F5359780 F5359373 F5359725 F3629275 13629550KM F3629680 # F3639555 F535970601 F5359707 F5359801 ERZVA7V330 1/50 ECPU1C474MA5 RPE132-901F104Z50 GRM39B102J50PT GRM39B103K50PT GRM39CH271J50PT ECJ1VC1H151J 150P J 0.33UF/50V 100/16V 47/16V 470/6.3 10P 15P ECJ1VF1E104Z 0.1Z VARISTOR CAPACITOR
NON POLAR CHEMICAL CAPACITOR MYLAR CAPACITOR(SUBMICRON) MLT.LAY.CERAMIC CAPACITOR
#
CHIP CAPACITOR (1608 TYPE) CHIP CAPACITOR (1608 TYPE) CHIP CAPACITOR (1608 TYPE) CHIP CAPACITOR CHEMICAL CAPACITOR CHEMICAL CAPACITOR CHEMICAL CAPACITOR CHEMICAL CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR
#
13639195 F3629678TS
2200/35 10/16V
CAPACITOR (ELECTOLYTIC) CAPACITOR
F3639637
470UF/35V
CAPACITOR
C157 on MAIN C200, C201 on MAIN C5 on MAIN C1,C2,C3,C4,C5,C7 on SW C21,C33,C55,C67,C130 on MAIN C1,C46,C134,C135,C187,C188 on MAIN C197 on MAIN C32,C43,C161 on MAIN C189 on MAIN C17,C29,C41,C164,C165,C167,C169 on MAIN C4,C18,C25,C26,C27,C36,C38,C39,C49,C51, C53,C58,C146,C153 on MAIN C45,C160 on MAIN C3,C7,C23,C24,C34,C35,C48,C52,C54,C68,C 172 on MAIN C125,C123 on MAIN C9,C10,C11,C13,C16,C19,C20,C22,C31,C57, C61,C63,C66,C69,C70,C71,C72,C74,C75,C76 ,C77,C79,C80,C83,C84,C85,C86,C87,C88,C8 9,C90,C91,C93,C94,C95,C96,C97,C98,C99,C 100,C101,C102,C103,C104,C105,C106,C107, C108,C109,C110,C111,C112,C113,C114,C11 5,C116,C117,C120,C121,C122,C124,C126,C1 27,C128,C132,C133,C136,C138,C139,C140,C 143,C144,C145,C147,C150,C151,C154,C155, C163,C168,C185,C186,C190,C191,C198 on MAIN C158 on MAIN C12,C14,C15,C28,C37,C40,C44,C50,C59,C60 ,C62,C64,C65,C81,C82,C92,C118,C119,C129, C131,C137,C141,C142 on MAIN C149,C162,C166 on MAIN
1 2 1 6 5 6 1 3 1 7 14 2 11 2 85
1 23
3
INDUCTOR,COIL,FILTER F2449220 F5409102 13529246 12449386
TSL1112SRA-471KR72 N1608Z601T02 DSS310-91D223S-50ATL12-134 SBT-0180W
INDUCTOR FERRITE-BEAD EMI FILTER EMI FILTER
L17 on MAIN L10,L11 on MAIN FL1,FL2 on MAIN L15 on MAIN
1 2 2 1
CRYSTAL,RESONATOR 00891801 02672401
MA-406 24.000MHZ TE24 SG-8002JC 67.7376MHZ PC
CRYSTAL CRYSTAL
X2 on MAIN X1 on MAIN
1 1
ENCODER 01905467 EVE GC1 F20 24B ROTARY ENCODER EN1 on SW 1
CONNECTOR F3439123 F3439121 F3439231 F3439232 F3439179 A2001WR2-3P A2541WR2-2A16NP A2001WR2-12P A2001WR2-13P A2001WR2-7P CONNECTOR 3P CONNECTOR 16P CONNECTOR 12P CONNECTOR 13P CONNECTOR 7P CN5 on MAIN CN1 on MAIN CN2 on MAIN CN4 on MAIN CN6 on MAIN 1 1 1 1 1
# #
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GT-8
CONNECTOR F3439164 A2001WR2-8P CONNECTOR 8P CN3 on MAIN 1
WIRING, CABLE # F3467038 # F3467039 G3467178 G3477156 G3467175 G3477146 G3467180 G3467176
WIRING WIRING WIRING RIBBON CABLE WIRING RIBBON CABLE LCD WIRING WIRING
12P P=2MM L=120MM 13P P=2MM L=65MM 8P P=2MM L=65MM 7P P=2MM L=140MM 3P P=2MM L=115MM 3P L=40X5X5 MM P=2MM 16P L=160MM 7P P=2MM L=115MM
CN5 on SW CN8 on SW CN7 on SW CN3,CN2 on SW CN1 on SW CN4,CN6 on SW CN9 on SW,CN6 on MAIN
1 1 1 1 1 1 1 1
TRANSFORMER 02563501 PT-10 (2280-T008) PULSE TRANS TR1 on MAIN 1
SCREWS # H5039515 H5019428 H5019130 H5029854 H5039510 H5030008 H5029843 H5019434 H5029330 H5029331 H5019803 H5039122 40016523 H5039520 H5039112 NUT M6 SCREW M3X6 SCREW M3X6 BOLT M3X12 NUT M9X12X2 HEX BOLT M6X85 SCREW 2.3X8 SCREW M2.6X8 SCREW M3X8 SCREW 3X8 SCREW 3X8 PLAIN WASHER INSULOK TIE 100M/M T-18R M9 NUT WASHER M9 U BZC
PAN MACHINE W/SW+SMALL PW BZC PAN MACHINE W/SW+PW ZC
# # #
HEX BUTTON FENI FENI BZC BINDING TAPTITE P ZC BINDING TAPTITE P BZC BINDING TAPTITE P BZC BINDING S-TIGHT FEBZC BINDING P-TIGHT FECM 6X13X1 BZC ((1000 PCS ORDERING PER))
for Phone Jack
for VR for Phone Jack
1 10 5 6 8 1 1 1 3 21 20 2 2 15 8
PACKING # # #
G2607117 G2617305 G2607116 G2237620 G2237616
COLOR SLEEVE OUTER PACKING CASE PACKING CASE PAD L PAD R
1 0.5 1 1 1
MISCELLANEOUS # F2569105 02567267 H2369431 G2147118 # G2147874 F2367103 G2357111 G2567119 G2567118 G2237112 G2237113 G2257203 G2187904 G2217138 G2217139 G2217140 G2217143 G2217144 G2217142 G2217141 # G1889117 # G2637107 G2567121 H2369401 G2147806 G2177103
CR2032 220MAH/3V BATRY HOLDER LED SPACER AC JACK HOLDER BOLT HOLDER CORD HOOK CUSHION R DISPLAY COVER ESCUTCEON GUARD GUARD PLATE JACK COVER PEDAL HOLDER PEDAL LABEL(1) PEDAL LABEL(2) PEDAL LABEL(3) PEDAL LABEL(4) PEDAL LABEL(CTL) PEDAL LABEL(DOWN) PEDAL LABEL(UP) PIN STAY RUBBER SW RUBBER SW ESCUTCHEON SPACER 3X6X10 STAY SUPPORT SPRING
LITHIUM BATTERY BCR20H4 3-2
BT1 on MAIN LED8 on SW on MAIN
on MAIN
LED1,LED2,LED3,LED4,LED5,LED6,LED7 on SW
1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 1 7
ACCESSORIES (Standard) G2457142 G245714101 G2457144 G2457143 00905234
AC ADAPTOR AC ADAPTOR AC ADAPTOR AC ADAPTOR EURO CONVERTER PLUG
BRC-240AT BRC-230T BRC-120T BRC-100T ECP01-5A (PLUG for 230V)
1 1 1 1 1
15
Dec.2004
ACCESSORIES (Standard) # G6047001 # G6047002 # G6027107 # G6047005 # G6027108 40232389
OWNER'S MANUAL OWNER'S MANUAL PRESET PATCH LIST READ ME FIRST USER PATCH LIST WARRANTY CARD
JAPANESE ENGLISH JAPANESE/ENGLISH JAPANESE/ENGLISH JAPANESE/ENGLISH FOR BOSS JAPAN ONLY
1 1 1 1 1 1
16
GT-8
CHECKING THE VERSION NUMBER
1. 2. Simultaneously hold down the [OUTPUT SELECT], [TUNER] and [MANUAL] buttons and turn on the power to the GT-8. The version number and checksum appear in the lower row of the LCD display.
When Transmitting Data to Another GT-8
Connect as shown in the figure below, and match the Device ID for the transmitting and receiving devices.
fig.08-150
fig.version
GT-8 Ver. *.** [****]
MIDI IN
USERS DATA SAVE AND LOAD
Transmitting and Receiving MIDI Data
On the GT-8, you can use Exclusive messages to provide another GT-8 with identical settings, and save effect settings on a MIDI sequencer or other device. Transmitting data this way is called "Bulk Dump," while receiving such data is referred to as "Bulk Load."
MIDI OUT
Transmitting
fig.08-160
1,2
Transmitting Data to an External MIDI Device (Bulk Dump)
The following types of data can be transmitted. You can transmit data by specifying the range from the start to the end of transmission.
Displayed System
#1-1-#35-4 Temp
Data Transmitted System Parameters, Harmonist scales, Auto Riff phrases, and Preamp/Speaker, Overdrive/Distortion, and Wah Custom Edit parameter settings Settings for Patch Number 1-1 through 35-4 Settings for the patch the is currently called up 1. Press [SYSTEM] twice, then press PARAMETER [ "MIDI: Bulk Dump" is displayed.
4 3 1
][ ] so that
Making the Connections
When Saving to a MIDI Sequencer
Connect as shown in the figure below, and put the sequencer in the state where it is ready to receive Exclusive messages.
fig.08-140
fig.08-170d
2.
Press PARAMETER [ ][ ] to move the cursor, and rotate the PATCH/VALUE dial to select the start and end of the data to be transmitted. When the data to be sent has been determined, press [WRITE]. The data is transmitted.
3.
fig.08-180d
MIDI IN
MIDI OUT
When the transmission is completed, the screen prior to transmission returns to the display. 4. Press [EXIT] to return to the Play screen.
*
For instructions on operating the sequencer, refer to the owner's manual for the sequencer you are using.
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