Roland V-Synth GT Service Notes
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May, 2007

Table of Contents

Cautionary Notes ..............................................................2
Specifications .....................................................................2
Location of Controls .........................................................4
Exploded View (Total)......................................................6
Exploded View (Total) Parts List ....................................7
Exploded View (Plain 1)...................................................8
Exploded View (Plain 1) Parts List .................................9
Exploded View (Plain 2).................................................10
Exploded View (Plain 2) Parts List ...............................11
Exploded View (Fig.1) ....................................................12
Exploded View (Fig.1) Parts List ..................................13
Exploded View (Fig.2) ....................................................14
Exploded View (Fig.1) Parts List ..................................14
Exploded View (Fig.3) ....................................................15
Exploded View (Fig.3) Parts List ..................................15
Keyboard Parts List.........................................................16
Keyboard Assembly Procedure ....................................17
Keyboard Circuit Board .................................................20
Parts List ...........................................................................22
Wiring Diagram...............................................................26
Verifying the Version Number......................................28
Saving and Loading Data...............................................28
How to Perform a Factory Reset ...................................29
How to Update the System............................................29
Test Mode .........................................................................30
Block Diagram .................................................................42
Circuit Board (Main Board: 1/2)...................................44
Circuit Board (Main Board: 2/2)...................................46
Circuit Diagram (Main Board: 1/8)..............................48
Circuit Diagram (Main Board: 2/8)..............................50
Circuit Diagram (Main Board: 3/8)..............................52
Copyright © 2007 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of ROLAND CORPORATION.
Circuit Diagram (Main Board: 4/8) ..............................54
Circuit Diagram (Main Board: 5/8) ..............................55
Circuit Diagram (Main Board: 6/8) ..............................56
Circuit Diagram (Main Board: 7/8) ..............................57
Circuit Diagram (Main Board: 8/8) ..............................58
INLET Board: 1/2) ..........................................................60
INLET Board: 2/2) ..........................................................62
Circuit Diagram (Jack Board: 1/2)................................64
Circuit Diagram (Jack Board: 2/2)................................66
Circuit Diagram (MIDI Board) ......................................68
Circuit Diagram (PAD Board) .......................................70
Circuit Diagram (BENDER Board) ...............................71
Circuit Diagram (INLET Board)....................................71
Circuit Diagram (Panel L Board) ..................................76
Circuit Diagram (VOL Board) .......................................78
Circuit Diagram (EN Board)..........................................80
Circuit Board (Panel R Board: 1/2)...............................82
Circuit Board (Panel R Board: 2/2)...............................84
Circuit Diagram (Panel R Board) ..................................86
Circuit Board (S Board: 1/2) ..........................................88
Circuit Board (S Board: 2/2) ..........................................90
Circuit Diagram (S Board: 1/2) .....................................92
Circuit Diagram (S Board: 2/2) .....................................94
Circuit Board (Sub Board: 1/2) .....................................96
Circuit Board (Sub Board: 2/2) .....................................98
Circuit Diagram (Sub Board) .......................................100
17058497E0
SERVICE NOTES
Issued by RJA
Printed in Japan (0400) (SC-KWS)
V-SYNTH/GT

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Summary of Contents for Roland V-Synth GT

  • Page 1: Table Of Contents

    Circuit Diagram (Main Board: 2/8)......50 Circuit Diagram (Sub Board) ........100 Circuit Diagram (Main Board: 3/8)......52 Copyright © 2007 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
  • Page 2: Cautionary Notes

    May, 2007 V-SYNTH/GT Cautionary Notes Specifications Before beginning the procedure, please read V-Synth GT: Synthesizer Keyboard through this document. The matters described may differ according to the model. Keyboard 61 keys (with velocity and channel aftertouch) Back Up User Data! Sound Generator Configuration User data may be lost during the course of the procedure.
  • Page 3 May, 2007 V-SYNTH/GT Arpeggiator Connectors Patterns: User programmable (supports use of control change messages) Headphone Jack (Stereo 1/4 inch phone type) Motifs: 8 types Main Output Jacks (L/MONO, R) (1/4 inch TRS phone type) Tempo: 20-250 BPM Direct Output Jacks (L, R) (1/4 inch phone type) Input Jacks (L, R) (1/4 inch phone type) Mic Jack (1/4 inch phone type/XLR type, phantom power) MIDI Parts...
  • Page 4: Location Of Controls

    May, 2007 V-SYNTH/GT Location of Controls fig.panel-top.eps@L Part Code Part Name Description Q’ty 00120434 JACK YKB21-5262 40679901 LABEL BALANCED LABEL 13449252 6.5MM JACK YKB21-5006 (STEREO W/SW) 02232412 XLR CONNECTOR NCJ6FI-H-0 40679445 LABEL XLR LABEL 03016956 SLIDE SWITCH SSSU121700 13429274 MIDI SOCKET YKF51-5041 03231812 RCA (PIN)
  • Page 5: Exploded View (Total)

    May, 2007 V-SYNTH/GT Exploded View (Total) fig.bunkai-all.eps Refer to Fig.2 Refer to Fig.1 Refer to Fig.3 18-1 18-2 18-3 18-4 18-5 18-5 18-6...
  • Page 6: Exploded View (Total) Parts List

    May, 2007 V-SYNTH/GT Exploded View (Total) Parts List Part Code Part Name Description Q’ty 04563678 TOP PANEL 04566290 BENDER PANEL 02673945 STAY BENDER 03234723 BENDER PB-H0204 22495278 DS-KEYTOP MD2H BLK (W/WINDOW) 04124267 J R-KNOB SF-ELA BLK/SLV 04347467 J R-KNOB ELA-ENC BLK/SLV 01561578 J S-KNOB S BLK/LCG 04566323...
  • Page 7: Exploded View (Plain 1)

    May, 2007 V-SYNTH/GT Exploded View (Plain 1) fig.bunkai-hei1.eps Rear Side View1 View2...
  • Page 8: Exploded View (Plain 1) Parts List

    May, 2007 V-SYNTH/GT Exploded View (Plain 1) Parts List Part Code Part Name Description Q’ty 40011101 SCREW 3X8 BINDING TAPTITE B BZC 40011312 SCREW 3X8 BINDING TAPTITE P BZC 40237101 SCREW M3X8 PAN MACHINE W/SW+SMALL PW BZC 40011123 SCREW 4X8 BINDING TAPTITE B BZC 40010345 SCREW M4X10...
  • Page 9: Exploded View (Plain 2)

    May, 2007 V-SYNTH/GT Exploded View (Plain 2) fig.bunkai-hei2.eps View3-1 View3-2 Bottom...
  • Page 10: Exploded View (Plain 2) Parts List

    May, 2007 V-SYNTH/GT Exploded View (Plain 2) Parts List Part Code Part Name Description Q’ty 40011101 SCREW 3X8 BINDING TAPTITE B BZC 40011312 SCREW 3X8 BINDING TAPTITE P BZC Part Code Part Name Description Q’ty 40011101 SCREW 3X8 BINDING TAPTITE B BZC 40011312 SCREW 3X8 BINDING TAPTITE P BZC...
  • Page 11: Exploded View (Fig.1)

    May, 2007 V-SYNTH/GT Exploded View (Fig.1) fig.bunkai-fig1.eps Fig.1 Bottom...
  • Page 12: Exploded View (Fig.1) Parts List

    May, 2007 V-SYNTH/GT Exploded View (Fig.1) Parts List Part Code Part Name Description Q’ty 04566312 DISPLAY ESCT ******** POSITION SENSOR EMU601A2MA32 ******** TCG057QV1AC-G10 03897512 DISPLAY HOLDER B 04566434 DISPLAY HOLDER 73566345 SUB BOARD ASSY Part Code Part Name Description Q’ty 40011101 SCREW 3X8 BINDING TAPTITE B BZC...
  • Page 13: Exploded View (Fig.2)

    May, 2007 V-SYNTH/GT Exploded View (Fig.2) fig.bunkai-fig2.eps Fig.2 Exploded View (Fig.1) Parts List Part Code Part Name Description Q’ty 73459756 JACK BOARD ASSY 73459767 MIDI BOARD ASSY 73459690 S-BOARD ASSY 73456990 MAIN BOARD ASSY * MAIN BOARD ASSY includes the following parts. 04564045 SPACER KGES-6...
  • Page 14: Exploded View (Fig.3)

    May, 2007 V-SYNTH/GT Exploded View (Fig.3) fig.bunkai-fig3.eps Fig.3 3-6 3-7 3-12 3-14 3-15 3-6, 3-7 and 3-8 aren't included in 3-1. 3-10 3-11 3-8, 3-9, 3-14 and 3-15 are included in 3-11. 3-13 Exploded View (Fig.3) Parts List Part Code Part Name Description Q’ty...
  • Page 15: Keyboard Parts List

    May, 2007 V-SYNTH/GT Keyboard Parts List fig.SK-10.eps Part Code Part Name Description Q’ty 73780967 KEYBOARD ASSY SK-1061-A 73671489 NATURAL KEY CF 73671490 NATURAL KEY EB 73671501 NATURAL KEY D 73671512 NATURAL KEY G 73671523 NATURAL KEY A 73671534 NATURAL KEY C’ 73671545 SHARP KEY ********...
  • Page 16: Keyboard Assembly Procedure

    May, 2007 V-SYNTH/GT Keyboard Assembly Procedure How to Install the Contact Circuit Board The service-use contact circuit board (#04567412) is supplied with the rubber switches mounted. To prevent problems with sound generation due to dust contamination, do not detach the rubber switches. Turn the keyboard chassis upside-down.
  • Page 17 May, 2007 V-SYNTH/GT Arrangement of the Sub-chassis The sub-chassis are of two types having a different number of keys. 04452190 SUB CHASSIS 12P 04452212 SUB CHASSIS 13P When replacing, refer to the figure below and install the specified sub-chassis at the specified location. If springs are attached by adhesive to the sub-chassis before replacement, then when replacing the sub-chassis, order springs (#01231534) as well.
  • Page 18 May, 2007 V-SYNTH/GT How to Attach Keys Place the spring on the chassis. With the tip of the key angled downward, insert the key in the direction of the arrow shown in the figure. Press down near the key shaft from above and fit the key into the shaft. Attaching a key with the spring not upright results in altered touch.
  • Page 19: Keyboard Circuit Board

    May, 2007 V-SYNTH/GT Keyboard Circuit Board fig.SK-10-32P.eps@L fig.SK-10-29P.eps@L...
  • Page 20: Parts List

    May, 2007 V-SYNTH/GT Parts List fig.part1e Due to one or more of the following reasons, SAFETY PRECAUTIONS: parts with parts code ******** cannot be supplied as service parts. The parts marked have safety-related characteristics. Use only listed parts for replacement. •...
  • Page 21 May, 2007 V-SYNTH/GT JACK, EXT TERMINAL 13429274 MIDI SOCKET YKF51-5041 JK1 on MIDI Board 04459190 PLUG YKF45-0033N JK1 on Main Board 02781189 USB CONNECTOR B TYPE FE- YKF45-0021 JK2 on Main Board MALE 03231812 RCA (PIN) YKC21-4173 JK4 on Main Board 00120434 JACK YKB21-5262...
  • Page 22 May, 2007 V-SYNTH/GT POTENTIOMETER 04569256 POTENTIOMETER RK12L12C0C1G VR2 on PANEL-L Board 02891812 12M/M ROTARY POTENTI- RK12L12C0C08 VR1 on PANEL-L Board OMETER 03122123 30M/M SLIDE POTENTIOME- EWA NKE C15 B14 VR16, VR15, VR13, VR14 on PANEL-R Board 03679378 POTENTIOMETER EVUF3KFK1B14 VR6, VR1, VR9, VR4, VR10, VR11, VR12, VR7, VR8, VR3, VR2 on PANEL-R Board 01340234 POTENTIOMETER (9M/M)
  • Page 23 May, 2007 V-SYNTH/GT MISCELLANEOUS 40679445 LABEL XLR LABEL 04564067 SPACER PHD-06 40016590 NYLON RIVET NRP-345 BLACK 12199584 GROUNDING TERMINAL M1698 TER4, TER3, TER5 on Jack Board, TER2, TER1 on MIDI Board 02890945 CLAMP LWSM-0605 12169391 LED SPACER LH-5S-10 03014945 LED SPACER LH-3-8 04671301 SPACER...
  • Page 24: Wiring Diagram

    May, 2007 V-SYNTH/GT Wiring Diagram fig.wiring.eps@L Part Code Part Name Description Q’ty Part Code Part Name Description Q’ty 04566590 WIRING 04569623 WIRING FWR-P=1.00-K-18-180 04566601 WIRING 04569656 WIRING FWR-P=1.00-K-12-200 04566623 WIRING 04569690 WIRING FWR-P=1.00-K-40-160 04566634 WIRING 04569701 WIRING FWR-P=1.00-K-38-90 04569678 WIRING FWR-P=1.00-K-16-400 ******** WIRING...
  • Page 25: Verifying The Version Number

    V-SYNTH GT. Operate the computer to copy the backed-up data (all files and folders) on a drive (hard disk) in the computer to the drive named V-SYNTH GT. After copying, use the Safety Remove Hardware feature of the taskbar at the bottom right of the computer screen to cancel (stop) the connection to the V-Synth/GT.
  • Page 26: How To Perform A Factory Reset

    May, 2007 V-SYNTH/GT How to Perform a Factory Touch OK. fig.factory-02.eps_90 Reset This restores all data stored in memory on the V-Synth/GT to its factory- default settings. Performing a factory reset causes any user-created data saved in the V-Synth/ GT to be lost. When performing a factory reset, refer to Saving and Loading Data (p.
  • Page 27: Test Mode

    May, 2007 V-SYNTH/GT Test Mode Items Required • USB memory device (M-UF128) (#03906701) To recognized the USB memory device from the computer, copy a file Test Items named testmode.txt (containing anything) to the USB memory device beforehand. 1. VERSION CHECK (p. 32) A file named testmode.txt (containing anything) must be saved on the 2.
  • Page 28 May, 2007 V-SYNTH/GT fig.setting.eps Coaxial Out Output R Optical Out Output L Coaxial In Optical In Preparations for Testing Hold down [SHIFT] and press the PATCH PALETTE buttons in this sequence: [7], [8], [7], [8]. The Test mode (1. VERSION CHECK) starts. Connect the USB COMPUTER connector and the computer running Windows using the USB cable.
  • Page 29 May, 2007 V-SYNTH/GT Test Items 3. PEDAL This performs verification of pedal operation. 1. VERSION CHECK A screen like the one shown below is displayed on the LCD. fig.03-pedal.eps_90 This verifies the version of the main program. fig.01-version.eps_90 Depress and return the EV-5 pedals in order. When the values have changed from 0 to 127, OK is displayed.
  • Page 30 May, 2007 V-SYNTH/GT 5. MAIN OUT 7. DIRECT OUT This tests the audio signal (L and R) output from the MAIN OUT connectors. This tests the audio signal (L and R) output from the DIRECT OUT connectors. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 31 May, 2007 V-SYNTH/GT 9. COAXIAL OUT 11. OPTICAL OUT This tests the audio signal output from the COAXIAL OUT connector. This tests the audio signal output from the OPTICAL OUT connector. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 32 May, 2007 V-SYNTH/GT 13. MIC IN 15. MUTE/BEEP This tests the audio signal input from the MIC IN connector and the operation This performs verification of the MUTE circuit and the beep sound. of the PHANTOM power source. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 33 May, 2007 V-SYNTH/GT 17. TOUCH-PANEL ADJUST 19. XY-PAD ADJUST This performs adjustment of the positioning for the touch panel. This performs adjustment of the positioning for the XY pad. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 34 May, 2007 V-SYNTH/GT 21. D BEAM ADJUST 23. LCD This performs adjustment of the D beams. This verifies the display on the LCD screen. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD. fig.21-1-dbeammax.eps_90 fig.23-1-lcd.eps_90 Hold the hand at a location 5 cm above the D beams and touch Max.
  • Page 35 May, 2007 V-SYNTH/GT fig.23-4-lcd.eps_90 fig.23-8-lcd.eps_90 Red (full-screen) Black (full-screen) fig.23-5-lcd.eps_90 When verification of all patterns has finished, a display like the one shown below appears on the LCD screen. fig.23-9-lcd.eps_90 Green (full-screen) fig.23-6-lcd.eps_90 If no problem has been encountered, press [PATCH PALETTE 8] or [ ] to advance to the next test item.
  • Page 36 May, 2007 V-SYNTH/GT 25. SW1/LED1 27. SW2 This performs verification of switches with LEDs. This performs verification of switches without LEDs. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD. fig.25-sw1-led1.eps_90 fig.27-sw2.eps_90 Press the buttons displayed on the LCD screen in sequence.
  • Page 37 May, 2007 V-SYNTH/GT 28. A/D 29. KEYBOARD/STORAGE This performs verification of the Bender and Aftertouch controls, control This performs verification for sound generation, velocity, USB storage, and knobs, and sliders. USB MIDI. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 38 May, 2007 V-SYNTH/GT 30. MIC NOISE 32. D/A NOISE This performs measurement of residual noise during MIC input. This performs measurement of residual noise during the no-input state. A screen like the one shown below is displayed on the LCD. A screen like the one shown below is displayed on the LCD.
  • Page 39: Block Diagram

    May, 2007 V-SYNTH/GT Block Diagram fig.block.eps@L...
  • Page 40: Circuit Board (Main Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (Main Board: 1/2) fig.b-main-1.eps@L...
  • Page 41: Circuit Board (Main Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (Main Board: 2/2) fig.b-main-2.eps@L...
  • Page 42: Circuit Diagram (Main Board: 1/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 1/8) fig.c-main-1.eps@L...
  • Page 43: Circuit Diagram (Main Board: 2/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 2/8) fig.c-main-2.eps@L...
  • Page 44: Circuit Diagram (Main Board: 3/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 3/8) fig.c-main-3.eps@L...
  • Page 45: Circuit Diagram (Main Board: 4/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 4/8) fig.c-main-4.eps...
  • Page 46: Circuit Diagram (Main Board: 5/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 5/8) fig.c-main-5.eps...
  • Page 47: Circuit Diagram (Main Board: 6/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 6/8) fig.c-main-6.eps...
  • Page 48: Circuit Diagram (Main Board: 7/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 7/8) fig.c-main-7.eps...
  • Page 49: Circuit Diagram (Main Board: 8/8)

    May, 2007 V-SYNTH/GT Circuit Diagram (Main Board: 8/8) fig.c-main-8.eps@L...
  • Page 50: Circuit Board (Jack, Midi, Pad, Bender, Inlet Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (Jack, MIDI, PAD, BENDER, INLET Board: 1/2) fig.b-jack-1.eps@L...
  • Page 51: Circuit Board (Jack, Midi, Pad, Bender, Inlet Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (Jack, MIDI, PAD, BENDER, INLET Board: 2/2) fig.b-jack-2.eps@L...
  • Page 52: Circuit Diagram (Jack Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Diagram (Jack Board: 1/2) fig.c-jack-1.eps@L...
  • Page 53: Circuit Diagram (Jack Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Diagram (Jack Board: 2/2) fig.c-jack-2.eps@L...
  • Page 54: Circuit Diagram (Midi Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (MIDI Board) fig.c-midi.eps@L...
  • Page 55: Circuit Diagram (Pad Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (PAD Board) fig.c-pad.eps...
  • Page 56: Circuit Diagram (Bender Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (BENDER Board) fig.c-bender.eps Circuit Diagram (INLET Board) fig.c-inlet.eps...
  • Page 57: Circuit Board (Panel L, Vol, En Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (Panel L, VOL, EN Board: 1/2) fig.b-panel-l1.eps@L...
  • Page 58: Circuit Board (Panel L, Vol, En Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (Panel L, VOL, EN Board: 2/2) fig.b-panel-l2.eps@L...
  • Page 59: Circuit Diagram (Panel L Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (Panel L Board) fig.c-panel-l.eps@L...
  • Page 60: Circuit Diagram (Vol Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (VOL Board) fig.c-vol.eps@L...
  • Page 61: Circuit Diagram (En Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (EN Board) fig.c-en.eps...
  • Page 62 May, 2007 V-SYNTH/GT...
  • Page 63: Circuit Board (Panel R Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (Panel R Board: 1/2) fig.b-panel-r1.eps@L...
  • Page 64: Circuit Board (Panel R Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (Panel R Board: 2/2) fig.b-panel-r2.eps@L...
  • Page 65: Circuit Diagram (Panel R Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (Panel R Board) fig.c-panel-r.eps@L...
  • Page 66: Circuit Board (S Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (S Board: 1/2) fig.b-s1.eps@L...
  • Page 67: Circuit Board (S Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (S Board: 2/2) fig.b-s2.eps@L...
  • Page 68: Circuit Diagram (S Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Diagram (S Board: 1/2) fig.c-s-1.eps@L...
  • Page 69: Circuit Diagram (S Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Diagram (S Board: 2/2) fig.c-s-2.eps@L...
  • Page 70: Circuit Board (Sub Board: 1/2)

    May, 2007 V-SYNTH/GT Circuit Board (Sub Board: 1/2) fig.b-sub-1.eps@L...
  • Page 71: Circuit Board (Sub Board: 2/2)

    May, 2007 V-SYNTH/GT Circuit Board (Sub Board: 2/2) fig.b-sub-2.eps@L...
  • Page 72: Circuit Diagram (Sub Board)

    May, 2007 V-SYNTH/GT Circuit Diagram (Sub Board) fig.c-sub.eps@L...
  • Page 73 May, 2007 V-SYNTH/GT...
  • Page 74 May, 2007 V-SYNTH/GT...
  • Page 75 May, 2007 V-SYNTH/GT MEMO...

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