Jul.

2008 GW-8C, 8A, 8E, 8L, 8C/E

SERVICE NOTES
Issued by RJA

Table of Contents
Cautionary Notes ..............................................................2 Checking the Version Number......................................21
Main Specifications ...........................................................3 Saving and Loading Data...............................................21
Location of Controls (Top Panel) ....................................4 Performing a Factory Reset............................................21
Location of Controls (Top Panel) Parts List ..................4 Updating the System ......................................................22
Location of Controls (Rear Panel)...................................5 Test Mode .........................................................................23
Location of Controls (Rear Panel) Parts List .................5 Circuit Board (VP (Main) Board) ..................................28
Exploded View (Total)......................................................6 Circuit Diagram (VP (Main) Board: 1/3) .....................30
Exploded View (Total) Parts List ....................................7 Circuit Diagram (VP (Main) Board: 2/3) .....................32
Exploded View (1).............................................................8 Circuit Diagram (VP (Main) Board: 3/3) .....................34
Exploded View (1) Parts List ...........................................9 Circuit Board (Jack, USB, VOL Board) .........................36
Exploded View (2)...........................................................10 Circuit Diagram (Jack Board: 1/5)................................38
Exploded View (2) Parts List .........................................11 Circuit Diagram (Jack Board: 2/5)................................40
Exploded View (3)...........................................................12 Circuit Diagram (Jack Board: 3/5)................................42
Exploded View (3) Parts List .........................................13 Circuit Diagram (Jack Board: 4/5)................................44
Exploded View (4)...........................................................14 Circuit Diagram (Jack Board: 5/5)................................46
Exploded View (4) Parts List .........................................14 Circuit Diagram (USB Board) ........................................48
Keyboard Parts List.........................................................15 Circuit Diagram (VOL Board) .......................................48
Wiring Diagram/Block Diagram..................................16 Circuit Board (Panel-L, R Board) ..................................50
Wiring Parts List..............................................................17 Circuit Diagram (Panel-L Board) ..................................52
Parts List ...........................................................................18 Circuit Diagram (Panel-R Board)..................................54
Installing the Driver........................................................21

Revise Information
Dec 4, 2008 (p. 17) Corrected part code, number and description of Number 10.
(p. 19) Added a part in parts list (wiring, cable).

Copyright © 2008 Roland Corporation

All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Cororation.
17058579E0 Printed in Japan (0285) (CC-KWS)
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Cautionary Notes
Before beginning the procedure, please read
through this document. The matters described may
differ according to the model.

Back Up User Data!

User data may be lost during the course of the procedure. Refer to “Saving
and Loading Data (p. 21)” in the Service Notes and save the data. After
completing the procedure, restore the backed-up data to the product.

Part Replacement
When replacing components near the power-supply circuit or a heat-
generating circuit (such as a circuit provided with a heat sink or including a
cement resistor), carry out the procedure according to the instructions with
respect to the part number, direction, and attachment position (mounting so as
to leave an air gap between the component and the circuit board, etc.).

Parts List
A component whose part code is ******** cannot be supplied as a service part
because one of the following reasons applies.
• Because it is supplied as an assembled part (under a different part code).
• Because a number of circuit boards are grouped together and supplied as
a single circuit board (under a different part code).
• Because supply is prohibited due to copyright restrictions.
• Because reissuance is restricted.
• Because the part is made to order (at current market price).

Circuit Diagram
In the circuit diagram, “NIU” is an abbreviation for “Not in Use,” and
“UnPop” is an abbreviation for “Unpopulated.” They both mean non-mounted
components. The circuit board and circuit board diagram show silk-screened
indications, but no components are mounted.

2
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Main Specifications
GW-8: Workstation (Conforms to General MIDI 2 System)

Keyboard Others
61 keys (with velocity) Controllers
D Beam Controller: 1
Pitch Bend/Modulation Lever: 1
Control Knobs: 2
Sound Generator
USB (MIDI)
Maximum Polyphony Operating System
128 voices Windows: XP Home SP2 or later/Windows XP Professional SP2 or later/
Windows Vista
Parts
* This does not work with the 64-bit Edition of Windows Vista.
16 parts + Keyboard part
Display
Wave Memory 240 x 64 dots white graphic LCD
256 MB (16-bit linear equivalent)
Connectors
Preset Memory Output Jacks (L/MONO, R)
Performances: 128
Ext Input jack
Tones: 896 + 256 (GM2) + World
Headphones Jack
Rhythm Sets: 32 + 9 (GM2) + World
MIDI Connectors (IN, OUT)

User Memory Hold Pedal Jack

Performances: 128 Control Pedal Jack

Favorite Performances: 100 USB Connectors

Favorite Tones: 100 : COMPUTER (supports USB MIDI)

: MEMORY (supports USB 2.0 Hi-Speed Flash Memory)
Effects
MFX: Upper and Lower, 78 types Power Supply
Chorus: 3 types DC 9 V (AC Adaptor)
Reverb: 5 types
Current Draw
1,000 mA

Dimensions
Backing Track 1,045 (W) x 318 (D) x 102 (H) mm
41-3/16 (W) x 12-9/16 (D) x 4-1/16 (H) inches
Backing type
Style, Song, USB Memory Player Weight
6.0 kg / 13 lbs 4 oz
Tempo (MIDI) (excluding AC adaptor)
20 to 250
Accessories
Style Variations Owner's Manual English (#05120056)
4 Intro, 4 Main, 4 Ending, 4 Fill In Sync Start, Stop, One Touch Setting Owner's Manual Chinese (#05014812)
CD-ROM (Style Converter 3.0, Playlist Editor) (#05014823)
Song (16-track Recorder)
AC Adaptor (PSB-1U) (#04236101)
16-track, Rec mode (Mix, Replace), Count in, Punch In-Out, Input Quantize
Music Player Pad (#05014201)
USB Memory Player USB Box Protector (#05014189)
999 songs Hex Wrench (#5100000783)
SMF: format-0/1
Audio File: WAV, AIFF, MP3

Preset Memory
Styles: 130 + World

User Memory
Styles: 100
Songs: 200
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.

3
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Location of Controls (Top Panel)

fig.FrontPanel.eps@L

1 2 3 5 6 8 7 10 11 12 17 13 14 15

19

20 21 9

Location of Controls (Top Panel) Parts List

No. Part Code Part Name Description Q'ty

1 04909223 TOP CASE 1
2 5100001159 SUB-ASSY USB BOX GW-8 (LF) 1
3 05014123 PANEL SHEET L 1
4 03671756 D S-KEY TOP SX2H-B GRS BY MOONPO 31/2
01340323 LED SLR-332DC (ORANGE) 31
01340290 TACT SWITCH EVQ11A H=5.0 31
5 03126134 LED (INFRARED) TLN233(F) 1
6 01900612 DIODE TPS611 (F) 1
7 5100000041 N S-KEYTOP MD1H BLK MNP-A 18
01340323 LED SLR-332DC (ORANGE) 18
01340290 TACT SWITCH EVQ11A H=5.0 18
8 03671756 D S-KEY TOP SX2H-B GRS BY MOONPO 6/2
03904323 LED SLR-343BTCT32 6
01340290 TACT SWITCH EVQ11A H=5.0 6
9 04344189 KEYBOARD ASSY MSK-2 61KEY (W/O CABLE) 1
10 03671756 D S-KEY TOP SX2H-B GRS BY MOONPO 1/2
01904112 LED (RED) SLR-342VCT32 N.P.Q RANK 1
01340290 TACT SWITCH EVQ11A H=5.0 1
11 5100000041 N S-KEYTOP MD1H BLK MNP-A 1
02454278 LED SLR-322MC-T32 1
01340290 TACT SWITCH EVQ11A H=5.0 1
12 03784312 LED SLI-343DUT32 4
13 04124267 J R-KNOB SF-ELA BLK/SLV 990-05045-10-08 2
02455223 9M/M ROTARY POTENTIOMETER EVUF2KFK4B14 2
14 40785912 HEX SOCKET TAPTITE P 3X8 NI HEX SOCKET TAPTITE P 3X8 NI 4
01340290 TACT SWITCH EVQ11A H=5.0 2
15 05014112 DISPLAY COVER 1
16 03787090 R-KNOB LF BY MOONPO 1
05014178 R-KNOB LF SHEET 1
03122134 ROTARY ENCODER EC12E2420802 1
17 03671756 D S-KEY TOP SX2H-B GRS BY MOONPO 6/2
01340290 TACT SWITCH EVQ11A H=5.0 6
18 05014134 PANEL SHEET R 1
19 5100000041 N S-KEYTOP MD1H BLK MNP-A 1
01239867 LED (RED/GREEN) CLR SML72423C TP15 1
01340290 TACT SWITCH EVQ11A H=5.0 1
20 03234723 BENDER PB-H0204 1
21 04124267 J R-KNOB SF-ELA BLK/SLV 990-05045-10-08 1

4
 Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.FrontPanel.eps@R

14 16 17 8 18

Location of Controls (Rear Panel)

fig.RearPanel.eps@R

1 2 3 5 6 7 8

Location of Controls (Rear Panel) Parts List

No. Part Code Part Name Description Q'ty

1 13279884 POTENTIOMETER RK09K1110A0J 10KB 1
2 13429825 MIDI CONNECTOR YKF51-5054V 1
3 00569278 6.5MM JACK LGR4609-7100F 5
4 04452945 3.5MM JACK YKB21-5344N 1
5 02781189 USB CONNECTOR B TYPE FEMALE YKF45-0021N 1
6 04451556 CORD HOOK MNP 1
7 13449711 AC ADAPTOR JACK HEC0470-01-630 1
8 12499175 BUTTON JSPUE0011A 1
04904123 PUSH SWITCH AC POWER SUPPLY PWL-2P2T-6SBPA-001 1

5
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (Total)

fig.bunkaizu-all.eps

9
1

View1
2
4

4
ew
Vi
7
5

10

Refer to Fig.B
8

11 12
13
View6

16

17

14
18
15
20

Refer to Fig.A 27 19

22
View5

21

23

24
22
View7

View3

25

26
View2

6
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (Total) Parts List

No. Part Code Part Name Description Q'ty

1 04124267 J R-KNOB SF-ELA BLK/SLV 990-05045-10-08 3
2 04451556 CORD HOOK MNP 1
3 40122901 DOUBLE-FACED TAPE #501F W10MM 20M 20P (CM) -
4 05014112 DISPLAY COVER 1
5 05014178 R-KNOB LF SHEET 1
6 03787090 R-KNOB LF BY MOONPO 1
7 04909223 TOP CASE 1
8 05019090 VOL BOARD ASSY 1
9 05014123 PANEL SHEET L 1
10 05014134 PANEL SHEET R 1
11 03234723 BENDER PB-H0204 1
12 05019112 PANEL L ASSY 1
13 05013001 WIRING FWR1.00-K-18-120 FOR LCD 1
14 04909367 LCD MDG24GS8-FJ 1
15 05019123 PANEL R ASSY 1
16 05014689 INSULATING SHEET PANEL 1
17 05014145 SHIELD COVER JACK 1
18 05014690 INSULATING SHEET JACK 1
19 40122901 DOUBLE-FACED TAPE #501F W10MM 20M 20P (CM) -
20 12499175 BUTTON JSPUE0011A 1
21 40122556 DOUBLE FACED ADHESHIVE TAPE #575X W30MM 30M 10P 30CM -
22 05014167 SIDE HOLDER 2
23 04344189 KEYBOARD ASSY MSK-2 61KEY (W/O CABLE) 1
24 03894945 REINFORCE BAR 1
25 03786667 BOTTOM CASE 716-04038-05-00 1
26 12359137 RUBBER FOOT SJ-5012 BLK 4
27 40122812 ACETATE TAPE NITTO NO.5 BLK W15MM 3M -

7
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (1)

fig.bunkaizu-View123.eps

View1

View2
b b b

b b b

View3

d e d d

e
d
d

d d

8
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (1) Parts List

View1
No. Part Code Part Name Description Q'ty
a 40785912 HEX SOCKET TAPTITE P 3X8 NI HEX SOCKET TAPTITE P 3X8 NI 4

View2
No. Part Code Part Name Description Q'ty
b 40012490 SCREW 4X10 BINDING TAPTITE P BZC 21
c 40011334 SCREW 3X12 BINDING TAPTITE-P FE BZC 12

View3
No. Part Code Part Name Description Q'ty
d 40011312 SCREW 3X8 BINDING TAPTITE P BZC 30
e 40012956 SCREW M3X8 PAN MACHINE W/SW+PW FE BZC 2
f 40120967 COATING CLIP CS-3 1

9
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (2)

fig.bunkaizu-View456.eps

View4

c e

View5

d d

View6

10
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (2) Parts List

View4
No. Part Code Part Name Description Q'ty
c 40011334 SCREW 3X12 BINDING TAPTITE-P FE BZC 2
e 40012956 SCREW M3X8 PAN MACHINE W/SW+PW FE BZC 5
g 40011512 SCREW M3X12 PAN MACHINE W/SW BZC 1

View5
No. Part Code Part Name Description Q'ty
d 40011312 SCREW 3X8 BINDING TAPTITE P BZC 13

View6
No. Part Code Part Name Description Q'ty
d 40011312 SCREW 3X8 BINDING TAPTITE P BZC 4

11
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (3)

fig.bunkaizu-View789.eps

View7

Fig.A
View8

A
View9

D
E

View8 View9

h h

12
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (3) Parts List

View7
No. Part Code Part Name Description Q'ty
d 40011312 SCREW 3X8 BINDING TAPTITE P BZC 2

Fig.A
No. Part Code Part Name Description Q'ty
A 05019078 JACK BOARD ASSY 1
B 74011089 VP (MAIN) BOARD ASSY for GW-8C, GW-8C/E 1
74013334 VP (MAIN) BOARD ASSY for GW-8A 1
74015023 VP (MAIN) BOARD ASSY for GW-8E 1
74015134 VP (MAIN) BOARD ASSY for GW-8L 1
* VP (MAIN) BOARD ASSY includes the following parts.
J 02781189 USB CONNECTOR B TYPE FEMALE YKF45-0021N 1

C 5100001209 INSULATING WASHER 2

D 05014156 SHIELD COVER MAIN 1
E 40016534 INSULOCK TIE 204M/M T-18L 1
F 02679278 FERRITE-CORE KRCBC160928B 1

View8
No. Part Code Part Name Description Q'ty
h 40011067 SCREW 3X8 BINDING TAPTITE B FE ZC 4

View9
No. Part Code Part Name Description Q'ty
h 40011067 SCREW 3X8 BINDING TAPTITE B FE ZC 4

13
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Exploded View (4)

fig.bunkaizu-View10.eps

Fig.B View10

I
View10

Exploded View (4) Parts List

Fig.B
No. Part Code Part Name Description Q'ty
G 05019089 USB BOARD ASSY 1
* USB BOARD ASSY includes the following parts.
H 03897089 USB CONNECTOR A TYPE FEMALE YKF45-0031N 1

I 5100001159 SUB-ASSY USB BOX GW-8 (LF) 1

View10
No. Part Code Part Name Description Q'ty
d 40011312 SCREW 3X8 BINDING TAPTITE P BZC 2

14
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Keyboard Parts List

fig.keys.eps

1 2 3 4
6

5
10 9 8 7 11 a

No. Part Code Part Name Description Q'ty

04344189 KEYBOARD ASSY MSK-2 61KEY (W/O CABLE)

1 03786378 NATURAL KEY C FOR MSK-2 5

1 03786389 NATURAL KEY D FOR MSK-2 5
1 03786390 NATURAL KEY E FOR MSK-2 5
1 03786401 NATURAL KEY F FOR MSK-2 5
1 03786412 NATURAL KEY G FOR MSK-2 5
1 03786423 NATURAL KEY A FOR MSK-2 5
1 03786434 NATURAL KEY B FOR MSK-2 5
1 03786445 NATURAL KEY C' FOR MSK-2 1
2 03786456 SHARP KEY FOR MSK-2 25
3 03786312 KEY FELT MSK-2 HOOK T2.0MM L828XW5.5 1
4 03456967 COILED SPRING MSK-1 NATURAL KEY 36
4 03456978 COILED SPRING MSK-1 SHARP KEY 25
5 03786301 KEY FELT MSK-2 BACK T4.0MM L840XW6.0 1
6 04230834 RUBBER SW KEYBOARD 12P FOR MSK-1 4
6 04230845 RUBBER SW KEYBOARD 13P FOR MSK-1 1
7 03786345 PWB KEYBOARD LO ASSY FOR MSK-2 1
7 03786356 PWB KEYBOARD HI ASSY FOR MSK-2 1
8 ******** CHASSIS KEYBOARD FOR MSK-2 1
9 03786334 KEY FELT MSK-2 BOTTOM M T2.0MM L840XW10 1
10 03786323 KEY FELT MSK-2 BOTTOM L T2.0MM L840XW15 1
11 15019126 SWITCHING DIODE 1SS133 T-77 122

a 40011189 SCREW 3X8 PAN TAPTITE-P FE ZC 34

15
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Wiring Diagram/Block Diagram

fig.WIRING-Block.eps@L

16
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Wiring Parts List

fig.WIRING-Block.eps@R

No. Part Code Part Name Description Q'ty

1 05012956 WIRING MI047 WIRING FOR USB 1
2 05013001 WIRING FWR1.00-K-18-120 FOR LCD 1
3 05012912 WIRING FWR-S-P=1.25-K-18-220 1
4 05012901 WIRING FWR-S-P=1.25-K-16-220 1
5 05012978 WIRING FWR-P=1.25-K-12-180 1
6 05012934 WIRING FWR-P=1.25-K-26-180 1
7 05012945 WIRING 220MM P=2 W/2HDR PHR-PHR-F 1
8 05019401 WIRING 300MM P=2 W/2HDR PHR-PHR-F 1
9 05012867 WIRING 6X350 FOR SHIELD 1
10 ******** WIRING 380+240 MM W/3 HEADER 1
10 05019389 CABLE ASSY FOR MSK-2 1

3 4

5 6

7
8

10

17
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Parts List
fig.-part1-e.eps

Safety Precautions: Due to one or more of the following reasons,

The parts marked have safety- parts with parts code ******** cannot be supplied as service parts.
related characteristics. Use only
listed parts for replacement. • 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
03786667 BOTTOM CASE 716-04038-05-00 1
# 04909223 TOP CASE 1
# 05014112 DISPLAY COVER 1
# 5100001159 SUB-ASSY USB BOX GW-8 (LF) 1

CHASSIS
03894945 REINFORCE BAR 1

KNOBÅABUTTON
03671756 D S-KEY TOP SX2H-B GRS BY MOONPO 5
03787090 R-KNOB LF BY MOONPO 1
04124267 J R-KNOB SF-ELA BLK/SLV 990-05045-10-08 3
# 05014178 R-KNOB LF SHEET 1
12499175 BUTTON JSPUE0011A 1
5100000041 N S-KEYTOP MD1H BLK MNP-A 10

SWITCH
01340290 TACT SWITCH EVQ11A H=5.0 SW1, SW2, SW3, SW4, SW5, SW6, SW7, 65
SW8, SW9, SW10, SW11, SW12, SW13,
SW14, SW15, SW16, SW17, SW18, SW19,
SW20, SW21, SW22, SW23, SW24, SW25,
SW26, SW27, SW28, SW29 on Panel L Board,
SW101, SW102, SW103, SW104, SW105,
SW106, SW107, SW108, SW109, SW110,
SW111, SW112, SW113, SW114, SW115,
SW116, SW117, SW118, SW119, SW120,
SW121, SW122, SW123, SW124, SW125,
SW126, SW127, SW128, SW129, SW130,
SW131, SW132, SW133, SW134, SW135,
SW136 on Panel R Board
# 04904123 PUSH SWITCH AC POWER PWL-2P2T-6SBPA-001 SW1 on Jack Board 1
SUPPLY

JACKÅAEXT TERMINAL
00569278 6.5MM JACK LGR4609-7100F JK3, JK5, JK6, JK7, JK8 on Jack Board 5
03897089 USB CONNECTOR A TYPE FE- YKF45-0031N JK12 on USB Board 1
MALE
02781189 USB CONNECTOR B TYPE FE- YKF45-0021N JK2 on VP (MAIN) Board 1
MALE
04452945 3.5MM JACK YKB21-5344N JK10 on Jack Board 1
13429825 MIDI CONNECTOR YKF51-5054V JK2 on Jack Board 1
13449711 AC ADAPTOR JACK HEC0470-01-630 JK1 on Jack Board 1

DISPLAY UNIT
# 04909367 LCD MDG24GS8-FJ 1

BENDER UNIT
03234723 BENDER PB-H0204 1

KEYBOARD ASSY
04344189 KEYBOARD ASSY MSK-2 61KEY (W/O CABLE) 1

PWB ASSY
# 05019078 JACK BOARD ASSY 1
# 05019089 USB BOARD ASSY 1
# 05019090 VOL BOARD ASSY 1
# 05019112 PANEL L ASSY 1
# 05019123 PANEL R ASSY 1
# 74011089 VP (MAIN) BOARD ASSY FOR GW-8C for GW-8C, GW-8C/E 1
# 74013334 VP (MAIN) BOARD ASSY FOR GW-8A for GW-8A 1
# 74015023 VP (MAIN) BOARD ASSY FOR GW-8E for GW-8E 1
# 74015134 VP (MAIN) BOARD ASSY FOR GW-8L for GW-8L 1

18
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

DIODE
01239867 LED (RED/GREEN) CLR SML72423C TP15 LED21 on Panel L Board 1
01340323 LED SLR-332DC (ORANGE) LED4, LED5, LED6, LED7, LED8, LED9, 49
LED11, LED12, LED13, LED14, LED15,
LED16, LED17, LED18, LED19, LED20,
LED29, LED30, LED31, LED32, LED33,
LED34 on Panel L Board,
LED104, LED105, LED109, LED110,
LED111, LED112, LED113, LED114,
LED115, LED116, LED117, LED120,
LED121, LED123, LED124, LED125,
LED126, LED127, LED128, LED129,
LED130, LED131, LED132, LED133,
LED134, LED135, LED136 on Panel R Board
01904112 LED (RED) SLR-342VCT32 N.P.Q RANK LED10 on Panel L Board 1
02454278 LED SLR-322MC-T32 LED28 on Panel L Board 1
03126134 LED (INFRARED) TLN233(F) LED27 on Panel L Board 1
03784312 LED SLI-343DUT32 LED23, LED24, LED25, LED26 on Panel L 4
Board
03904323 LED SLR-343BTCT32 LED1, LED2, LED3 on Panel L Board 3
01900612 DIODE TPS611 (F) IC1 on Panel L Board 1

POTENTIOMETER
03122134 ROTARY ENCODER EC12E2420802 1
02455223 9M/M ROTARY POTENTIOM- EVUF2KFK4B14 VR2, VR3 on Panel L Board 2
ETER
13279884 POTENTIOMETER RK09K1110A0J 10KB VR1 on Jack Board 1

INDUCTOR, COIL, FILTER

02679278 FERRITE-CORE KRCBC160928B 1

WIRING, CABLE
# 05012901 WIRING FWR-S-P=1.25-K-16-220 1
# 05012912 WIRING FWR-S-P=1.25-K-18-220 1
# 05012934 WIRING FWR-P=1.25-K-26-180 1
# 05012978 WIRING FWR-P=1.25-K-12-180 1
# 05013001 WIRING FWR1.00-K-18-120 FOR LCD 1
# 05012867 WIRING 6X350 FOR SHIELD 1
# 05012956 WIRING FOR USB 1
# 05012945 WIRING 220MM P=2 W/2HDR PHR- 1
PHR-F
# 05019401 WIRING 300MM P=2 W/2HDR PHR- 1
PHR-F
# 05019389 CABLE ASSY FOR MSK-2 1

SCREWS
40011067 SCREW 3X8 BINDING TAPTITE B FE ZC 8
40011189 SCREW 3X8 PAN TAPTITE-P FE ZC 34
40011312 SCREW 3X8 BINDING TAPTITE P BZC 52
40011334 SCREW 3X12 BINDING TAPTITE-P FE BZC 16
40011512 SCREW M3X12 PAN MACHINE W/SW BZC 1
40012490 SCREW 4X10 BINDING TAPTITE P BZC 21
40012956 SCREW M3X8 PAN MACHINE W/SW+PW FE 8
BZC
# 40785912 HEX SOCKET TAPTITE P 3X8 HEX SOCKET TAPTITE P 3X8 4
NI NI
# 5100001209 INSULATING WASHER 2

MISCELLANEOUS
02230578 LED SPACER LDS-50R 1
04236412 HEATSINK 25X15X11 1
04451556 CORD HOOK MNP 1
# 05014123 PANEL SHEET L 1
# 05014134 PANEL SHEET R 1
# 05014145 SHIELD COVER JACK 1
# 05014156 SHIELD COVER MAIN 1
# 05014167 SIDE HOLDER 2
# 05014689 INSULATING SHEET PANEL 1
# 05014690 INSULATING SHEET JACK 1
12169368 LED SPACER LDS-40B 1
12199584 GROUNDING TERMINAL M1698 TER1, TER2, TER3, TER4 on Jack Board 4
12359137 RUBBER FOOT SJ-5012 BLK 4
40016534 INSULOCK TIE 204M/M T-18L 1
40120967 COATING CLIP CS-3 1
40122556 DOUBLE FACED ADHESHIVE #575X W30MM 30M 10P 30CM -
TAPE
40122812 ACETATE TAPE NITTO NO.5 BLK W15MM 3M -
40122901 DOUBLE-FACED TAPE #501F W10MM 20M 20P (CM) -

19
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

ACCESSORIES (Standard)
04236101 AC ADAPTOR WITHOUT AC PSB-1U (S) UNIVERSAL 1
CORD
5100000564 AC CORD (CCC) 220V CN 1
02562456 AC CORD SET 120V 1.0M (NON POLAR) 1
01903356 AC CORD SET 230V 1.0M FOR PSB 1
5100000115 AC CORD SET 230VE 1.0M FOR PSB 1
03785590 AC CORD SET SC-078-NA05 240VA 1
# 05014823 CD-ROM V1.00 1
# 5100000783 HEX WRENCH 1
# 40786023 HEX SOCKET CAP SCREW M3Å~12 NI MOONPO 2
# 05014189 USB BOX PROTECTOR 1
# 05014201 MUSIC PLAYER PAD SET 1
# 5100000314 CHINESE SHEET L for GW-8C 1
# 5100000315 CHINESE SHEET R for GW-8C 1
# 5100001463 STICKER for GW-8C, GW-8C/E 1
# 5100001464 STICKER for GW-8A 1
# 5100001465 STICKER for GW-8E 1
# 5100001466 STICKER for GW-8L 1
# 05014812 OWNER'S MANUAL CHINESE for GW-8C, GW-8C/E 1
# 05120056 OWNER'S MANUAL ENGLISH for GW-8A, GW-8E, GW-8L 1
# 5100000031 TONE LIST GW-8A 1
# 5100000032 TONE LIST GW-8E 1
# 5100000033 TONE LIST GW-8L 1

20
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Installing the Driver Saving and Loading Data

A personal computer which is running Windows XP/Vista is required in order
to verify the USB operation. Test Mode operation requires a personal computer
in which a GW-8 USB-MIDI driver is installed. Backing up User Data
This driver can be downloaded from the Roland website. This procedure saves user data to a USB memory.
* Be sure that the dedicated driver is installed in the personal computer where Test * Performing this data backup requires approximately 32MB or more of available
Mode operation is to occur. space in the USB memory.

1. Turn the GW-8 power on.

2.
Checking the Version Plug the USB memory into the USB MEMORY connector.

3. Press the [MENU] button to display the MENU screen.

Number 4. Select Utility, then press the [ENTER] button.

5. At the Utility screen which then displays, select Export, then press the
Turn the GW-8 power on while holding down the [TONE], [V-LINK], and [8]
[ENTER] button.
buttons.
6. At the Export screen which then displays, select All, then press the
* Continue holding down these buttons until the screen shown below displays.
[ENTER] button.
fig.test-1.eps

7. A confirmation message then displays.

To proceed with the backup operation, press the [ENTER] button. To
abort the backup operation, press the [EXIT] button.

Restoring User Data

This screen displays the model name, the application program version, and the
boot program version. This procedure restores user data which has been saved in the USB memory to
The displayed model name is GW-8C, GW-8A, GW-8E, or GW-8L. Be sure that the GW-8 unit.
the displayed model name matches the model name indicated on the barcode 1. Turn the GW-8 power on.
label affixed on the GW-8 unit’s bottom face.
2. Plug the USB memory which contains the saved user data into the USB
When the “GW-8C/E” model name is indicated on the barcode label, the “GW-
MEMORY connector.
8C” model name displays at the version screen.
3. Press the [MENU] button to display the MENU screen.

4. Select Utility, then press the [ENTER] button.

5. At the Utility screen which then displays, select Import, then press the
[ENTER] button.

6. At the Import screen which then displays, select All, then press the
[ENTER] button.

7. A confirmation message then displays.

To proceed with the restore operation, press the [ENTER] button. To
abort the restore operation, press the [EXIT] button.

Performing a Factory Reset

This procedure resets all data recorded in the GW-8 to the factory setting
status.

* All user data in the GW-8 unit is lost when a Factory Reset is performed.
Therefore, be sure to back up important user data to a USB memory before
performing a Factory Reset.

1. Turn the GW-8 power on.

2. Press the [MENU] button to display the MENU screen.

3. Select Utility, then press the [ENTER] button.

4. At the Utility screen which then displays, select Factory Reset, then
press the [ENTER] button.

5. A confirmation message then displays.

To proceed with the Factory Reset operation, press the [ENTER] button.
To abort the Factory Reset operation, press the [EXIT] button.

21
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Updating the System Updating the Application

Program
GW-8 programs can be updated from a USB memory. There are three GW-8
program types: Boot Program, Application Program, Wave Data.
All data in the GW-8 unit is lost when an update occurs. Therefore, be sure to Required Items
back up important user data before performing an update.
• USB memory (M-UF1G)
• Application program updater (obtain one of the followings from the
service net)
gw8_up_C***.zip (for GW-8C, GW-8C/E)
Never turn the GW-8 power off while an update is in progress. Doing so can
gw8_up_A***.zip (for GW-8A)
destroy data and disable the GW-8.
gw8_up_E***.zip (for GW-8E)
gw8_up_L***.zip (for GW-8L)

Updating the Boot Program * “***” is the version number.

* Each of the GW-8C (GW-8C/E), GW-8A, GW-8E, GW-8L models uses a
different Application Program. Updating with the wrong application program
Required Items can alter the way in which the GW-8 unit operates. Moreover, after
• USB memory (M-UF1G) decompressing the above file, it will not be possible to identify the GW-8 model
by the file name.
• Boot program updater (obtain one of the followings from the service net)
gw8_bup_C***.zip (for GW-8C, GW-8C/E)
gw8_bup_A***.zip (for GW-8A) Procedure
gw8_bup_E***.zip (for GW-8E)
1. Decompress the above zip file, then copy the update file (gw8_up.bin) to
gw8_bup_L***.zip (for GW-8L)
the USB memory’s root directory.
* “***” is the version number.
2. Plug the USB memory into the USB MEMORY connector, then turn the
* Each of the GW-8C (GW-8C/E), GW-8A, GW-8E, GW-8L models uses a GW-8 power on.
different Boot Program. Updating with the wrong boot program can alter the The update then begins automatically.
way in which the GW-8 unit operates. Moreover, after decompressing the above Completed! displays when the update is completed.
file, it will not be possible to identify the GW-8 model by the file name.
3. Turn the GW-8 power off, then disconnect the USB memory.

4. Turn the GW-8 power on again and verify that startup occurs with the
Procedure new version.
1. Decompress the above zip file, then copy the update file (gw8_bup.bin) Check both the version number and the model name.
to the USB memory’s root directory. (See “Checking the Version Number” (p. 21) for details.)
2. Plug the USB memory into the USB MEMORY connector, then turn the If the wrong model name is indicated, repeat the above procedure from
GW-8 power on. step 1, using the correct updater.
The update then begins automatically.
Completed! displays when the update is completed.

3. Turn the GW-8 power off, then disconnect the USB memory.
Updating the Wave Data
4. Turn the GW-8 power on again and verify that startup occurs with the
new version. Required Items
Check both the version number and the model name.
• USB memory (M-UF1G)
(See “Checking the Version Number” (p. 21) for details.)
• Wave data updater (obtain one of the followings from the service net)
If the wrong model name is indicated, repeat the above procedure from
gw8_wave_C***.zip (for GW-8C, GW-8C/E)
step 1, using the correct updater.
gw8_wave_A***.zip (for GW-8A)
gw8_wave_E***.zip (for GW-8E)
gw8_wave_L***.zip (for GW-8L)
* “***” is the version number.
* Each of the GW-8C (GW-8C/E), GW-8A, GW-8E, GW-8L models uses different
Wave Data. Updating with the wrong wave data can alter the built-in tone.
Moreover, after decompressing the above file, it will not be possible to identify
the GW-8 model by the file name.

Procedure
1. Decompress the above zip file, then copy the update folders (ROM1,
ROM2) to the USB memory root directory.

2. Plug the USB memory into the USB MEMORY connector, then turn the
GW-8 power on.
The update then begins automatically, and continues for approximately
15 minutes.
Completed! displays when the update is completed.

3. Turn the GW-8 power off, then disconnect the USB memory.

4. Select the Test Mode, then verify that the WAVE ROM CHECK result is
OK.
If the wrong updater was used, NG (not good) displays. In this case,
repeat the above procedure from step 1, using the correct updater.

22
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Test Mode
* All data is lost when a Test Mode operation is executed. Therefore, be sure to back up important user data to a USB memory before executing the Test Mode operation.

Test Mode requires a personal computer in which a GW-8 USB-MIDI driver is installed. This driver can be downloaded from the Roland website.

Required Items
• USB Memory (M-UF1G)
• PC (OS: Windows XP)
• Headphones
• DP-2 (Connect to HOLD jack)
• EV-5 (Connect to CONTROL jack)
• Oscilloscope
• Oscillator
• Noise Meter
• AC Adaptor: PSB-1U
• Audio Cable, USB Cable, MIDI Cable (refer to the figure below)

Connection
fig.test-0.eps

PC Win XP

AC adaptor
PSB-1U

VOLUME: MAX

MIDI cable DP-2

Oscilloscope

EV-5

* Adjust VOLUME to its MAX level, and other knobs to its MIN levels.

Establishing the Test Mode

Turn the power on while holding down the [TONE], [V-LINK], and [8] buttons.

Ending the Test Mode

Turn the power off.

Moving (forced) between Test Items

To proceed to the next test item, press [ ] while holding down the [MENU] button.
To return to the previous test item, press [ ] while holding down the [MENU] button.

23
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Test Items 3. MIDI IN/OUT CHECK

1. VERSION CHECK (p. 24) fig.test-3.eps

2. DECIVE CHECK (p. 24)

3. MIDI IN/OUT CHECK (p. 24)
4. ENCODER CHECK (p. 24)
5. SW1/LED1 CHECK (p. 24)
6. SW2 CHECK (p. 24) Use the MIDI cable to connect the MIDI IN and MIDI OUT, then verify
7. LCD CHECK (p. 25) that Connect displays.
8. AD CHECK (p. 25) To proceed to the next test item, disconnect the MIDI cable.

9. PHONES CHECK (p. 25)

10. OUTPUT L/R CHECK (p. 25) 4. ENCODER CHECK
11. EXT INPUT CHECK (p. 26) fig.test-4-1.eps

12. D BEAM CHECK (p. 26)

13. MUTE CHECK (p. 26)
14. KEYBOARD CHECK (p. 26)
15. NOISE CHECK (p. 26)
16. WAVE ROM CHECK (p. 27) Turn the encoder dial to the left, verifying that the numeric value
17. FACTORY RESET (p. 27) decreases to 0.
fig.test-4-2.eps
18. COMPLETED (p. 27)

1. VERSION CHECK
fig.test-1.eps

Next, turn the encoder to the right, verifying that the numeric value
increases from 0 to 48. When 48 is reached, the system automatically
proceeds to the next test item.

5. SW1/LED1 CHECK
Be sure that the displayed model name matches the model name fig.test-5.eps
indicated on the barcode label affixed on the GW-8 unit’s bottom face.
When the “GW-8C/E” model name is indicated on the barcode label, the
“GW-8C” model name displays at the version screen.
Also verify the PROG and BOOT versions.

To proceed to the next test item, Press [ ].

Press the switches in the order in which their lamps switch on. The
switch to be pressed next is indicated at the LCD display area.
2. DECIVE CHECK
After all 63 LED equipped switches have been pressed, the system
fig.test-2.eps
automatically proceeds to the next test item.

6. SW2 CHECK
fig.test-6.eps

This test begins automatically. Verify that all the results are OK.
To proceed to the next test item, disconnect the USB memory and USB
cable.
* If NG* (not good) displays at the USB MEM and USB MIDI items, check the
USB memory’s connection to the PC, then perform the check again. Press the switches in the order in which they are indicated at the LCD
display area (blinking display). After all 6 switches have been pressed,
the system automatically proceeds to the next test item.

24
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

7. LCD CHECK 9. PHONES CHECK

fig.test-7-1.eps fig.test-9.eps

Each time [ENTER] is pressed, the display changes in the following Connect an oscilloscope to the PHONES jack and check the output
sequence. waveform.
fig.test-7-2.eps
L side: 1 kHz, sine wave, 12.5 Vpp±2.0 V
R side: 2 kHz, sine wave, 12.5 Vpp±2.0 V

If the results are OK, press [ ] to proceed to the next test item.

fig.test-7-3.eps
10. OUTPUT L/R CHECK
fig.test-10-1.eps

fig.test-7-4.eps

Connect an oscilloscope to the OUTPUT connector and check the output

waveform.
L side: 20 Hz, sine wave, 12.5 Vpp±2.0 V
R side: 20 Hz, sine wave, 12.5 Vpp±2.0 V

fig.test-7-5.eps If the results are OK, press [ENTER] to change the frequency.
fig.test-10-2.eps

fig.test-7-6.eps

Use an oscilloscope to check the output waveform from the OUTPUT

connector.
L side: 1 kHz, sine wave, 12.5 Vpp±2.0 V
R side: 1 kHz, sine wave, 12.5 Vpp±2.0 V

When the above is displayed, turn the LCD CONTRAST knob on the rear If the results are OK, press [ENTER] to change the frequency.
fig.test-10-2.eps
panel, verifying that the LCD contrast changes.
Press [ ] to proceed to the next test item.

8. AD CHECK
fig.test-8.eps

Use an oscilloscope to check the output waveform from the OUTPUT

connector.
L side: 20 kHz, sine wave, 12.5 Vpp±2.0 V
R side: 20 kHz, sine wave, 12.5 Vpp±2.0 V

Connect the DP-2 to the HOLD jack, and connect the EV-5 to the If the results are OK, press [ ] to proceed to the next test item.
CONTROL jack.
Adjust the bender, pedals, and knobs to their minimum -> maximum ->
minimum levels, and verify that OK is indicated for each of them.
• Benders: BEND, MOD
• Pedals: CONTROL, HOLD
• Knobs: ANALOG MODIFY
If all the test results are OK, the system automatically proceeds to the
next test item.

25
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

11. EXT INPUT CHECK 13. MUTE CHECK

fig.test-11.eps fig.test-13.eps

Connect an oscilloscope to the OUTPUT connector. With music being output from the OUTPUT connector, apply the
Connect an oscillator to the EXT INPUT connector, then perform the following types of vibration to the product, verifying that the music
following waveform inputs. output is not interrupted.
L side: 1 kHz, sine wave, 0.55 Vpp Lift the left side of the product to a height of 8 cm, then allow it to fall
R side: 2 kHz, sine wave, 0.55 Vpp freely back to the surface (2 times).
Use an oscilloscope to check the output waveform from the OUTPUT Lift the right side of the product to a height of 8 cm, then allow it to fall
connector. freely back to the surface (2 times).
L side: 1 kHz, sine wave, 12.5 Vpp±2.0 V Lift the rear side of the product to a height of 8 cm, then allow it to fall
R side: 2 kHz, sine wave, 12.5 Vpp±2.0 V freely back to the surface (2 times).

Verify that MUTE is operating when [ENTER] is pressed, and MUTE is Plug headphones into the PHONES jack and verify that the sound is
not operating [ENTER] is pressed again. normal. Also verify that the mute function engages while [ENTER] is
Verify that Center Cancel is operating when [ENTER] is pressed, and held down.
Center Cancel is not operating [ENTER] is pressed again. If the test results are OK, unplug headphones and press [ ] to proceed
to the next test item.
Next, set the oscillator’s output waveforms as follows:
L side: 10 kHz, sine wave, 0.55 Vpp
R side: 10 kHz, sine wave, 0.55 Vpp
14. KEYBOARD CHECK
fig.test-14-1.eps

Use an oscilloscope to check the output waveforms from the OUTPUT

connector at this time.
L side: 10 kHz, sine wave, 0.5 Vpp or less
R side: 10 kHz, sine wave, 0.5V pp or less

Set the oscillator’s output waveforms as follows:

Verify that all keys produce a sound.
L side: 130 Hz, sine wave, 0.55 Vpp
Press the keys lightly and strongly, verifying that the sound volume
R side: 130 Hz, sine wave, 0.55 Vpp
changes accordingly.
If the test results are OK, press [ ] to switch the sound to Organ.
Use an oscilloscope to check the output waveforms from the OUTPUT
fig.test-14-2.eps
connector at this time.
L side: 130 kHz, sine wave, 12.5 Vpp±2.0 V
R side: 130 kHz, sine wave, 12.5 Vpp±2.0 V

If the results are OK, press [ENTER].

The system automatically proceeds to the next test item when the cable is
disconnected from the EXT INPUT connector. Verify that all keys produce a sound.
If the results are OK, press [ ] to proceed to the next test item.
12. D BEAM CHECK
fig.test-12.eps 15. NOISE CHECK
fig.test-15.eps

7This test adjusts the D BEAM sensitivity.

Place a hand at a height of 5 cm above the D BEAM, then adjust (turn) the Set the master VOLUME to its MAX level, and connect nothing to the EXT
encoder until a 127 value displays at the LCD. In the same manner, place INPUT.
the hand 45 cm above the D BEAM and adjust the encoder until 0 value Connect a noise meter (DIN-AUDIO, RMS) to the OUTPUT connector,
displays at the LCD. and verify that the reading is -80 dBm or less.
When these adjustments are completed, press [ ] to proceed to the
next test item.

26
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

16. WAVE ROM CHECK

fig.test-16.eps

Wave ROM1: Verify that OK is indicated as the check result.

Wave ROM2: Verify that OK is indicated as the check result.

Press [ ] to proceed to the next test item.

17. FACTORY RESET

fig.test-17.eps

Press [ENTER] to perform a factory reset.

18. COMPLETED
fig.test-18.eps

Turn the power off.

27
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Board (VP (Main) Board)

fig.b-VP-1.eps

28
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.b-VP-2.eps

29
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (VP (Main) Board: 1/3)

fig.d-VP-1.eps@L

30
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-VP-1.eps@R

31
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (VP (Main) Board: 2/3)

fig.d-VP-2.eps@L

32
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-VP-2.eps@R

33
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (VP (Main) Board: 3/3)

fig.d-VP-3.eps@L

34
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-VP-3.eps@R

35
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Board (Jack, USB, VOL Board)

fig.b-JACK-1.eps@L

fig.b-JACK-2.eps@L

36
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.b-JACK-1.eps@R

fig.b-JACK-2.eps@R

37
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Jack Board: 1/5)

fig.d-JACK-1.eps@L

38
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-JACK-1.eps@R

39
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Jack Board: 2/5)

fig.d-JACK-2.eps@L

40
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-JACK-2.eps@R

41
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Jack Board: 3/5)

fig.d-JACK-3.eps@L

42
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-JACK-3.eps@R

43
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Jack Board: 4/5)

fig.d-JACK-4.eps@L

44
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-JACK-4.eps@R

45
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Jack Board: 5/5)

fig.d-JACK-5.eps@L

46
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-JACK-5.eps@R

47
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (USB Board)

fig.d-USB.eps

Circuit Diagram (VOL Board)

fig.d-VOL.eps

48
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

49
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Board (Panel-L, R Board)

fig.b-PANEL.eps@L

50
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.b-PANEL.eps@R

51
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Panel-L Board)

fig.d-PANELL.eps@L

52
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-PANELL.eps@R

53
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

Circuit Diagram (Panel-R Board)

fig.d-PANELR.eps@L

54
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

fig.d-PANELR.eps@R

55
Jul. 2008 GW-8C, 8A, 8E, 8L, 8C/E

MEMO