Oct.

2010 CUBE-40XL

SERVICE NOTES
Issued by RJA

Table of Contents
Cautionary Notes ..............................................................2 Factory Reset ....................................................................15
Specifications .....................................................................3 Test Mode .........................................................................15
Location of Controls .........................................................4 Circuit Board (Main Board) ...........................................18
Location of Controls Parts List........................................4 Circuit Diagram (Main Board: 1/3) ..............................20
Exploded View (Cabinet).................................................6 Circuit Diagram (Main Board: 2/3) ..............................22
Exploded View (Cabinet) Parts List ...............................7 Circuit Diagram (Main Board: 3/3) ..............................24
Exploded View (Chassis) .................................................8 Circuit Board (Panel, Jack, Input, PS Board) ...............25
Exploded View (Chassis) Parts List................................9 Circuit Diagram (Panel Board)......................................26
Wiring Diagram/Block Diagram..................................10 Circuit Diagram (Jack Board) ........................................28
Parts List ...........................................................................12 Circuit Diagram (Input Board)......................................29
Verifying the Version Number......................................15 Circuit Diagram (PS Board) ...........................................29

Copyright © 2010 Roland Corporation

All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
17058699E0 CC-KWS
Oct. 2010 CUBE-40XL

Cautionary Notes

Before beginning the procedure, please read

through this document. The matters described may
differ according to the model.

No User Data
This product cannot save user data. Backing up user data during servicing is
not required.

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 ******** will not 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).
• Because it is carried in electronic data on the Roland web site.
• Because it is a package or an accessory irrelevant to the function
maintenance of the main body.
• Because it can be replaced with an article on the market. (battery or etc.)

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
Oct. 2010 CUBE-40XL

Specifications

CUBE-40XL:Guitar Amplifier

Rated Power Output Power Consumption

40 W 43 W

Nominal Input Level Dimensions

INPUT: -10 dBu/1 MΩ 385 (W) x 265 (D) x 385 (H) mm
AUX IN: -10 dBu 15-3/16 (W) x 10-7/16 (D) x 15-3/16 (H) inches

Speaker Weight
25 cm (10 inches) 10 kg / 22 lbs 1 oz

Controls Accessory
POWER Switch Owner’s Manual Multilanguage (#5100016039), Chinese (#5100016323)
SELECT Switch
TUNER Switch
Options
POWER SQUEEZER Switch
<JC CLEAN Channel> Foot Switch (BOSS FS-5L, FS-5U, FS-6)
VOLUME Knob
<LEAD Channel>
TYPE Switch (ACOUSTIC SIM, BLACK PANEL, BRIT COMBO,
TWEED, CLASSIC STACK, METAL STACK, R-FIER STACK,
EXTREME, DYNA AMP)
* 0 dBu = 0.775 Vrms
GAIN Knob
VOLUME Knob * Printed matters will not be supplied after the end of the production. Then,
download the electronic file from the Roland web site.
<SOLO>
ON/OFF, MEMORY Switch * In the interest of product improvement, the specifications and/or appearance of
VOLUME Knob this unit are subject to change without prior notice.
<EQUALIZER>
BASS Knob
MIDDLE Knob
TREBLE Knob
<EFX>
EFX Knob (CHORUS, FLANGER, PHASER, TREMOLO,
HEAVY OCTAVE)
<DELAY/LOOPER>
REC/PLAY/DUB Switch
TAP/STOP Switch
DELAY/LOOPER Knob (DELAY, LOOPER)
<REVERB>
REVERB Knob (SPRING, PLATE)

Indicators
JC CLEAN Channel, LEAD Channel, TUNER, SOLO, EFX, DELAY/LOOPER,
REC/PLAY/DUB, REVERB, POWER SQUEEZER

Connectors
INPUT Jack (1/4” phone type)
AUX IN Jack (Stereo miniature phone type)
RECORDING OUT/PHONES Jack (Stereo 1/4” phone type)
FOOT SW Jack (TIP:SELECT, RING:SOLO) (1/4” TRS phone type)
FOOT SW Jack (TIP:EFX, RING:REVERB) (1/4” TRS phone type)
FOOT SW Jack (TIP:DELAY/REC/PLAY/DUB, RING:TAP/STOP) (1/4” TRS
phone type)

3
Oct. 2010 CUBE-40XL

Location of Controls
fig.panel-40XL.eps

1 3 1

5
7 4
2 2

6 1 8 5 9 8 1 10

11 12

Location of Controls Parts List

No. Part Code Part Name Description Q’ty

1 5100004182 POTENTIOMETER RD901F-40E1-15F-0B10K-00DN6 10
* This unit includes the following parts.
17048630 VR ACCESSORY NUT M9 10
40452178 VR WASHER M9 10

1 5100004351 R-KNOB 05800-515(SD000043)40A-KBG-10 10

2 03349978 LED (RED) L-34HDSL-FPB 6
3 5100004353 KEYTOP 40285-501(SD000906) 1
05011067 LED L-3WEGW (153-L-3WEGW) 1
01780101 TACT SWITCH SKQKABD010 1
4 5100004353 KEYTOP 40285-501(SD000906) 1
01780101 TACT SWITCH SKQKABD010 1
5 5100004353 KEYTOP 40285-501(SD000906) 2
5100003359 LED BL L-34ID (153-L-34IDSLLF) 2
01780101 TACT SWITCH SKQKABD010 2
6 22150756 JACK NUT 2 PLASTIC/BLK 1
13449146 6.5MM JACK YKB21-5012 (W/SW) 1
7 03349989 LED (GREEN) L-34GDSL-FPB 1
8 5100015020 S-KEYTOP SX BLK 2
01780101 TACT SWITCH SKQKABD010 2

9 5100016162 ROTARY POTENTIOMETER RD901F-40-15F-B10K-09DW6 1

* This unit includes the following parts. 1
H5039521R0 NUT M7 1
17048651 VR ACCESSORY WASHER M7 M7X12X0.5 NO.476 1

9 5100004351 R-KNOB 05800-515(SD000043)40A-KBG-10 1

10 02897801 SEESAW SWITCH SDDJE13200 94V-0 1
11 22150756 JACK NUT 2 PLASTIC/BLK 4
13449252 6.5MM JACK YKB21-5006 (STEREO W/SW) 4
12 05019512 3.5MM JACK 203-HTJ03509ABT 1

4
Oct. 2010 CUBE-40XL

5
 Oct. 2010 CUBE-40XL

Exploded View (Cabinet)

fig.bunkaizu.eps

j
9

b 4
d
8
a
c
g
2
j

7
6

1
g
j
e
4

* Remove screws h and j first, then Chassis Assy can be removed.

6
Oct. 2010 CUBE-40XL

Exploded View (Cabinet) Parts List

No. Parts Code Parts Name Description Q’ty

1 5100015008 GRILLE 1
2 SD000017 BADGE 1

3 SD000035 HANDLE WITH ESCUTHEON 1

* This unit includes the following parts.
5100011381 HANDLE 1
5100011382 HANDLE PLATE 1
5100011383 HANDLE HOLDER 2

5100015546 CABINET ASSY 1

* This unit includes the following parts.
4 5100015011 CORNER PROTECTOR 4
5 5100015013 TRIM SASH 1
6 12359104 RUBBER FOOT G-5R 4
8 ******** CABINET 1

7 5100015948 SPEAKER W1008-432A 1

9 ******** CHASSIS ASSY Refer to Exploded View (Chassis) (p. 8). 1

a SD000975 SCREW M4X35 ORIGINAL TRUSS BZC 4

b SD000430 PLANE WASHER D11 D4.1 T1 BLACK/323-BG-405LF 4
c 40230789 SCREW 3X10 OVAL MACHINE BZC 2
d 40011689 SPEED NUT M3 F-TYPE 2
e 40010667 SCREW 4X16 TRUSS TAPPING A FE BZC 24
f 40010367 SCREW M4X25 BINDING MACHINE BZC 4
g SD000370 PLATE WASHER 4.2X10X0.5T FEBC 4
h 40564601 SCREW M5X35 OVALHEAD MACHINE BZC 2
i 5100005098 SCREW 3X16 TRUSS TAPPING A BZC 4
j 40010689 SCREW 4X25 TRUSS TAPPING A FE BZC 8

7
Oct. 2010 CUBE-40XL

Exploded View (Chassis)

fig.chassis-e.eps

i 9
i

8 11
i

10
5

This part faces different side

according to the voltage.

7 a d

6 e
100V, 117VU,
117VU/CS others
g
c b
c
f

b
c 7

8
Oct. 2010 CUBE-40XL

Exploded View (Chassis) Parts List

No. Parts Code Parts Name Description Q’ty

2 5100014936 MAIN BOARD ASSY 1
* This unit includes the following parts.
1 5100015021 HEATSINK 2

3 5100015016 CHASSIS 1

5100016067 PANEL SHEET ASSY 100/117V 1

* This unit includes the following parts.
4 ******** Input Board 1
5 ******** Panel Board 1
6 ******** Jack Board 1
10 ******** PS Board 1

7 5100004359 CORD HOOK 2

8 5100016080 POWER TRANSFORMER PT-AP018 100/117V 1
5100016081 POWER TRANSFORMER PT-AP018 230/240V 1
9 12369410 CORD BAND 1702B (except for 220VCN) 2
5100010992 CORD COVER 40285-021 (for 220VCN) 1
11 SD000177 AC CORD PSE SP-18A WITH TERMINAL 100V 1
SD000912 AC CORD ASSY SP-20 117V(2P) 1
5100012741 AC CORD 181-BG429-BL 117VBL 2.5M
SD000913 AC CORD ASSY SP-026A 230V(2P) 1
SD000914 AC CORD ASSY SP-61 230VE(2P) 1
SD000915 AC CORD ASSY SP-501 240V(2P) 1
SD001068 AC CORD ASSY SP-18B 115V(2P) 1
5100005807 AC CORD ASSY 181-BG429-CNLF-220VCN 2.5M 1

a 40013067 SCREW M3X8 PAN MACHINE W/SW+SMALL PW ZC 10

b 40565489 SCREW M4X25(302-P8402551LF) PAN MACHINE W/SW BZC 2
c 40010689 SCREW 4X25 TRUSS TAPPING A FE BZC 4
d 40011767 FLANGE HEX NUT M4 FE ZC 1
e 40011889 EXTERNAL TOOTH WASHER M4 FECM 1
40230245 SCREW M4X12 PAN MACHINE W/SW+PW BZC 1
f 40011767 FLANGE HEX NUT M4 FE ZC 2
5100017646 SPRING WASHER 4.1X7.6X1.0 ZC 2
40230245 SCREW M4X12 PAN MACHINE W/SW+PW BZC 2
g 40010301 SCREW M3X20 BINDING MACHINE BZC 2
h 40011756 FLANGE HEX NUT M3 ZC (except for 220VCN) 2
i 22150518 STANDOFF HEX.BOSS 5.5X15 M3 6

* Sandwich an Insulating Sheet (#5100015947) between the Heatsink (#5100015021) and Power IC.
* Apply bond to the Heatsink. (#40231345 KONISHI BOND CYEREX100)

9
Oct. 2010 CUBE-40XL

Wiring Diagram/Block Diagram

fig.wiring-block-40XL.eps@L

IC11B

IC10B

JK500
YKB21-5012 IC9A
2
CN500

IC7 IC10A
CN6

4
1
IC9B AD/DA TUBE LOGIC
INPUT BOARD
CIRCUIT

LED EEPROM (PROGRAM)

IC2
IC200
BU2090
◊11
EEPROM (USER)
CN201

IC6
CN3

SW
CPU/DSP
IC5
◊6

VR
IC201
CN200

TC74HC
CN2

4051AP(F)
◊7

◊4
MAIN BOARD SDRAM POW
IC3
+V1, -V1, +V2, -V2
PANEL BOARD

No. Part Code Part Name Description Q’ty

W1 5100015676 WIRING 192-AP018-W1 1
W2 5100015938 WIRING 195-BG431-W3 1
W3 5100017216 WIRING 192-AP018-W3 1
W4 5100017217 WIRING 192-AP018-W4 1
W5 5100015939 WIRING 195-BG431-W5 2
W6 5100015937 WIRING 196-BG432-W6 1
W7 5100015934 WIRING 196-BG432-W7 1
W8 5100015935 WIRING 196-BG431-W8 1
W9 5100015936 WIRING 195-BG431-W4 1

10
 Oct. 2010 CUBE-40XL

fig.wiring-block-40XL.eps@R

2
10

CN403
11 AUX

CN5
3
1

IC11A JK404
HTJ-035-09ABT

Power AMP
IC16
Q6

5
4
BTL 2
3 RECORDING OUT/
7
SP8 8 PHONES
1
JK403
YKB21-500 6

IC17

5
4
2
3 DELAY/
7
8 PLAY/REC/DUB
1
CN400
CN4

JK400
YKB21-500 6
5
4
2
3 EFX/REVERB
7
8
1
JK401
YKB21-500 6
5
4
2
MUTE CIRCUIT 3 SELECT/SOLO
7
8
1
JK402
ER SUPPLY YKB21-500 6

2, +8V, -8V, +3.3V, +1.5V JACK BOARD

CN12

POWER SWITCH

TRANSFORMER

PS BOARD

11
Oct. 2010 CUBE-40XL

Parts List
fig.-part1-e.eps

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

The parts marked have parts with parts code ******** cannot be supplied as service parts.
safety-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
# 5100015546 CABINET ASSY 1
# 5100015008 GRILLE 1

CHASSIS
# 5100015016 CHASSIS 1

KNOB, BUTTON
5100004351 R-KNOB 05800-515(SD000043)40A-KBG-10 11
# 5100015020 S-KEYTOP SX BLK 2
5100004353 KEYTOP 40285-501(SD000906) 4

SWITCH
01780101 TACT SWITCH SKQKABD010 6
02897801 SEESAW SWITCH SDDJE13200 94V-0 1

JACK, EXT TERMINAL

05019512 3.5MM JACK 203-HTJ03509ABT 1
13449146 6.5MM JACK YKB21-5012 (W/SW) 1
13449252 6.5MM JACK YKB21-5006 (STEREO W/SW) 4

SPEAKER, BUZZER
# 5100015948 SPEAKER W1008-432A 1

PWB ASSY
# 5100014936 MAIN BOARD ASSY 1

# 5100016067 PANEL SHEET ASSY 100/117V 1

* This unit includes the following parts.
# ******** Panel Board 1
# ******** Jack Board 1
# ******** Input Board 1
# ******** PS Board Change a fuse for high voltage. 1

DIODE
03349978 LED (RED) L-34HDSL-FPB 6
03349989 LED (GREEN) L-34GDSL-FPB 1
05011067 LED L-3WEGW (153-L-3WEGW) 1
5100003359 LED BL L-34ID (153-L-34IDSLLF) 2

POTENTIOMETER
5100004182 POTENTIOMETER RD901F-40E1-15F-0B10K-00DN6 10
# 5100016162 ROTARY POTENTIOMETER RD901F-40-15F-B10K-09DW6 1

FUSE, FUSE HOLDER

# 5100011084 FUSE MET 1.25 4
# 5100011077 FUSE MET 0.200 2
03670534 FUSE 5ST 1.25 1.25A/250V for low voltage 1
03674001 FUSE 5ST 630MA/250V for high voltage 1
# 5100000592 FUSE HOLDER FC-201 2

12
Oct. 2010 CUBE-40XL

WIRING, CABLE
# 5100015676 WIRING 192-AP018-W1 1
# 5100017216 WIRING 192-AP018-W3 1
# 5100017217 WIRING 192-AP018-W4 1
# 5100015938 WIRING 195-BG431-W3 1
# 5100015936 WIRING 195-BG431-W4 1
# 5100015939 WIRING 195-BG431-W5 2
# 5100015937 WIRING 196-BG432-W6 1
# 5100015934 WIRING 196-BG432-W7 1
# 5100015935 WIRING 196-BG431-W8 1

TRANSFORMER
# 5100016080 POWER TRANSFORMER PT-AP018 100/117V for low voltage 1
# 5100016081 POWER TRANSFORMER PT-AP018 230/240V for high voltage 1

AC CORD ASSY (Installed)

SD000177 AC CORD PSE SP-18A WITH TERMINAL 100V for 100V 1
# SD001068 AC CORD ASSY SP-18B 115V(2P) for 115VTW 1
# 5100012741 AC CORD 181-BG429-BL 117VBL 2.5M for 117VBL 1
# SD000912 AC CORD ASSY SP-20 117V(2P) for 117VU, 117VU/CS 1
5100005807 AC CORD 181-BG429-CNLF-220VCN 2.5M for 220VCN 1
# SD000914 AC CORD ASSY SP-61 230VE(2P) for 230VE 1
# SD000913 AC CORD ASSY SP-026A 230V(2P) for 230VEU 1
# SD000915 AC CORD ASSY SP-501 240V(2P) for 240VA 1

SCREWS
40230789 SCREW 3X10 OVAL MACHINE BZC 2
5100005098 SCREW 3X16 TRUSS TAPPING A BZC 4
40010667 SCREW 4X16 TRUSS TAPPING A FE BZC 24
40010689 SCREW 4X25 TRUSS TAPPING A FE BZC 8
40013067 SCREW M3X8 PAN MACHINE W/SW+SMALL PW ZC 10
40010301 SCREW M3X20 BINDING MACHINE BZC 2
40230245 SCREW M4X12 PAN MACHINE W/SW+PW BZC 3
40010367 SCREW M4X25 BINDING MACHINE BZC 4
40565489 SCREW M4X25(302-P8402551LF) PAN MACHINE W/SW BZC 2
SD000975 SCREW M4X35 ORIGINAL TRUSS BZC 4
40564601 SCREW M5X35 OVALHEAD MACHINE BZC 2
40011756 FLANGE HEX NUT M3 ZC except for 220VCN 2
40011756 FLANGE HEX NUT M3 ZC for 220VCN 0
40011767 FLANGE HEX NUT M4 FE ZC 3
H5039521R0 NUT M7 1
17048630 VR ACCESSORY NUT M9 10
22150756 JACK NUT 2 PLASTIC/BLK 2
40011689 SPEED NUT M3 F-TYPE 2
SD000430 PLANE WASHER D11 D4.1 T1 BLACK/323-BG-405LF 4
SD000370 PLATE WASHER 4.2X10X0.5T FEBC 4
5100017646 SPRING WASHER 4.1X7.6X1.0 ZC 1
40011889 EXTERNAL TOOTH WASHER M4 FECM 1
17048651 VR ACCESSORY WASHER M7 M7X12X0.5 NO.476 1
40452178 VR WASHER M9 10
22150518 STANDOFF HEX.BOSS 5.5X15 M3 6

MISCELLANEOUS
# 5100015011 CORNER PROTECTOR 4
# 5100015013 TRIM SASH 1
SD000017 BADGE 1
SD000035 HANDLE WITH ESCUTHEON 1
5100011381 HANDLE 1
5100011382 HANDLE PLATE 1
5100011383 HANDLE HOLDER 2
12359104 RUBBER FOOT G-5R 4
12369410 CORD BAND 1702B except for 220VCN 2
5100010992 CORD COVER 40285-021 for 220VCN 1
5100004359 CORD HOOK 2
# 5100015945 EVA PACKING 85X22X1T W/ADH 1
# 5100015946 EVA PACKING 85X15X1T W/ADH 1
# 5100015943 EVA PACKING 320X35X1T W/ADH 1
# 5100015944 EVA PACKING 25X15X1T W/ADH 1
5100011022 EVA PACKING 110X15X1T W/ADH 1
# 5100011023 EVA PACKING 110X10X1T W/ADH 2
# 5100015021 HEATSINK 2
# 5100015949 HIMELON 6X50X0.5T W/ADH 3
# 5100015941 HIMELON 10X320X1T W/ADH 1
# 5100018360 AC PLUG SHEET for 230VE, 220VCN 1
# 5100015947 INSULATING SHEET 2
5100005099 LOCKING CABLE TIE 120X2.5X1T DAIHWA 8
5100004371 LED SPACER LK-36-2 1

13
Oct. 2010 CUBE-40XL

MISCELLANEOUS
5100004215 LED SPACER LEDH-2 2
5100004216 LED SPACER LEDH-7 7
# 5100005211 SEAL UL LIGHTNING FLASH 1
# 5100015942 ACETATE TAPE #156A 35X25XT0.25 2
# 5100016363 ACETATE TAPE #156A 275*10*0.25 1
# 5100000603 TERMINAL PT1870502 2
04892501 TERMINAL JH-8M3-T 1
40231345 BOND KONISHI BOND CYEREX100 330ML -

ACCESSORIES (Standard)
# 5100016038 OWNER’S MANUAL JAPANESE 1
# 5100016039 OWNER’S MANUAL MULTILANGUAGE 1
# 5100016323 OWNER’S MANUAL CHINESE 1

14
Oct. 2010 CUBE-40XL

Verifying the Version Factory Reset

Number Ordinary servicing or part replacement requires no factory reset. In the future,
however, updates to the software version may make a factory reset necessary,
and so the procedure is described below. (or refer to the Owner’s Manual, p.
Items Required 13).
• Foot switch (FS-5U x 2 or FS-6)
• Foot-switch connection cable (PCS-31 or PCS-33)
• Dummy plug
Performing a factory reset causes user data to be deleted and returned to the
factory defaults. User data (control setting data saved using the SOLO
Procedure Function) cannot be backed up.

1. Connect the foot switches to the FOOT SW TIP: SELECT/RING: SOLO * When you want to check what the user data contains, refer to “Recalling the
jack. Saved Sound” (Owner’s Manual, p. 12).

* The PCS-31 foot-switch connection cable is an adapter cable from stereo to mono
x 2. The “white” end of the 1/4-inch mono phone plug is for TIP: SELECT, and 1. Hold down the TAP/STOP and SOLO ON/OFF switches at the same time
the “red” end is for RING: SOLO. Connect the mono ends of the 1/4-inch phone and switch on the power.
plug to the FS-5U foot switches. You can connect the white and red ends to All LEDs light up, after which only the SOLO LED flashes. Then setting
either FS-5U unit. data saved using the SOLO Function return to the factory-default state.
* Set the polarity switch on the FS-5U units to the “jack” side. This completes the factory reset, and user data is deleted.

2. Make the following settings on the main unit. 2. Switch off the power to the unit.
POWER switch: OFF
SELECT switch: JC CLEAN (The push switch is up.)
AMP TYPE control: ACOUSTIC SIM
All knobs: Minimum (0 or OFF)
Test Mode
3. Hold down the [SELECT] (white) foot switch connected to the FOOT SW
jack and switch on the power. Items Required
At this time, all LEDs on the panel light for about one second. Hold down
the FS-5U while the LEDs are lighting. • Foot switch (FS-5U x 2 or FS-6)
• Foot-switch connection cable (PCS-31 or PCS-33)
4. Release your hand immediately after the LEDs go off, and then press it
• Dummy plug
two times.
After the all LEDs blink for a while, the version number is displayed as
follows. Entering the Test Mode
Go to Verifying the Version Number (p. 15) and execute steps 1 through 4.
Version LEFT CENTER RIGHT After verifying the version, depress the [SELECT] (white) foot switch
1.00 o - - connected to the FOOT SW jack to enter the first test item, 1. DSP Test.
1.01 - o -
1.02 - - o
1.03 o o - Exiting the Test Mode
1.04 o - o
1.05 - o o Switch off the power.
o: flashing, -: dark

fig.ver.eps
Skipping
LEFT CENTER RIGHT Inspection items cannot be skipped.

Test Items

1. DSP Test
DSP Test starts automatically as soon as you enter the Test Mode.
In the DSP Test, LEDs light up in the sequence of LEFT (JC CLEAN) ->
CENTER -> RIGHT (LEAD) to indicate the progress of the testing.

• If the test is passed (OK)

5. Switch off the power to the unit.
The LEFT (JC CLEAN), CENTER, and RIGHT (LEAD) LEDs flash.
• If the test is failed (not OK)
The EFX LED flashes.

When the test has been passed, depressing the [SELECT] foot switch makes
execution advance to the next test item.

15
Oct. 2010 CUBE-40XL

2. Switch Test
Entering the Switch Test makes all LEDs go out.
Carry out operations in the sequence shown below and check the status of the corresponding LEDs.

1. Pressing the SELECT switch makes the LEFT (JC CLEAN), CENTER, and RIGHT (LEAD) LED light up.

2. Pressing the TUNER switch makes the TUNER LED light up.

3. Pressing the REC/PLAY/DUB switch makes the REC/PLAY/DUB LED light up red.

4. Pressing the TAP/STOP switch makes the REC/PLAY/DUB LED light up green.

5. Pressing the TAP/STOP switch again makes the REC/PLAY/DUB LED light up orange.

6. Pressing the SOLO ON/OFF switch makes the SOLO LED light up.

7. Pressing the POWER SQUEEZER switch makes the POWER SQUEEZER LED light up.

8. Operate the rotary switch, plug, and pedal as the order in the following table.
LEDs with “o” in the table will light.
* If you mistake the order of operations or operate more than one item at a time, LEDs of LEFT (JC CLEAN) and RIGHT (LEAD) will blink.

Lighting LED
Operation LEFT RIGHT
CENTER
(JC CLEAN) (LEAD)

Rotate rotary switch

1 ACOUSTIC SIM o o o
2 BLACK PANEL o - -
3 BRIT COMBO - - o
4 TWEED o - -
5 CLASSIC STACK - - o
6 METAL STACK o - -
7 R-FIER STACK - - o
8 EXTREME o - -
9 DYNA AMP - - o
10 EXTREME o - -
11 R-FIER STACK - - o
12 METAL STACK o - -
13 CLASSIC STACK - - o
14 TWEED o - -
15 BRIT COMBO - - o
16 BLACK PANEL o - -
17 ACOUSTIC SIM o o o

Insert a dummy plug

18 Insert into RECORDING OUT/PHONES o - -
19 Pull out o o -
o: illuminated, -: dark

Lighting LED
Operation LEFT RIGHT DELAY/
CENTER EFX REVERB
(JC CLEAN) (LEAD) LOOPER

Press pedal, pull out/insert plug.

20 Press FOOT SW [TIP: SELECT]. o - - o - -
21 Press FOOT SW [RING: SOLO]. o o - o - -
22 Pull out from FOOT SW (SELECT/SOLO). - - - - - -
23 Insert to FOOT SW (EFX/REVERB). o - - - o -
24 Press FOOT SW [TIP: EFX]. o o - - o -
25 Press FOOT SW [RING: REVERB]. o o o - o -
26 Pull out from FOOT SW (EFX/REVERB). - - - - - -
27 Insert to FOOT SW (DELAY/TAP). o - - - - o
28 Press FOOT SW [TIP: DELAY]. o o - - - o
29 Press FOOT SW [RING: TAP]. o o o - - o
30 Pull out from FOOT SW (DELAY/TAP). - - - - - -
31 Insert to FOOT SW (SELECT/SOLO). o o o o o o
o: illuminated, -: dark

All operations are finished, LEDs of LEFT (JC CLEAN), CENTER and RIGHT (LEAD) will blink.

9. Press FOOT SW [SELECT] to advance to the next test item.

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Oct. 2010 CUBE-40XL

3. Volume Control Test AUX IN to PHONES Output Verification

When entering Volume Test, all LEDs go off temporarily. 3. Adjust the LEAD control to ACOUSTIC SIM.

1. Operate the following knobs of (1)–(10) minimum–center–maximum in 4. To the RECORDING OUT/PHONES jack, connect the 1/4-inch stereo
numerical order and confirm the all knobs work correctly with its LED phone plug 100-Ω load resistors (x 2).
lighting and sound from the speaker. 5. Simultaneously input the following signals to AUX IN left and right.
* If you mistake the order, the knob will not response. L: 100-Hz, 1-kHz, and 10-kHz sine waves at -20 dBu
* After detecting all of the minimum, center and the maximum value, test R: 100-Hz, 1-kHz, and 10-kHz sine waves at -20 dBu
program advances to test of the next knob. 6. Verify that the output values of the RECORDING OUT/PHONES jack are
as follows.
(1) JC CLEAN VOLUME L: 100 Hz at +1.0±1.5 dBu (flat)
(2) EQUALIZER BASS R: 100 Hz at +1.0±1.5 dBu (flat)
(3) EQUALIZER MIDDLE L: 1 kHz at -7.0±1.5 dBu (flat)
(4) EQUALIZER TREBLE R: 1 kHz at -7.0±1.5 dBu (flat)
(5) EFX L: 10 kHz at +6.0±1.5 dBu (flat)
(6) DELAY/LOOPER R: 10 kHz at +6.0±1.5 dBu (flat)
(7) REVERB
(8) SOLO VOLUME
Speaker Output Verification (1)
(9) LEAD VOLUME
(10) LEAD GAIN 3. Adjust the LEAD control to BLACK PANEL.

4. Connect the 8-Ω load resistor to the speaker cables (red and black).
Position of control Lighting LED * When detaching the speaker cables, be careful to keep the cable connectors from
Minimum (all the way being grounded. Failure to do so may damage the Main Board.
LEFT (JC CLEAN)
counterclockwise)
Center LEFT (JC CLEAN), CENTER 5. Input the following signals to the INPUT jack.
Maximum (all the way 100-Hz, 1-kHz, and 10-kHz sine waves at -25.0 dBu
LEFT (JC CLEAN), CENTER, RIGHT (LEAD)
clockwise)
6. Verify that the output values of the speaker are as follows.
100 Hz at +14.0±1.5 dBu (flat)
The volume level of the speaker sound increases as the control is
1 kHz at +14.0±1.5 dBu (flat)
operated toward the maximum position, and the pitch rises at the
10 kHz at +13.0±1.5 dBu (flat)
intermediate position.

When all volume testing has been completed, the LEFT (JC CLEAN), Speaker Output Verification (2)
CENTER, and RIGHT (LEAD) LEDs flash.
3. Adjust the LEAD control to TWEED.

4. Confirm the 8-Ω load resistor is connected to the speaker cables (red and
This concludes the testing.
black).

5. Input the following signals to the INPUT jack.

100-Hz, 1-kHz, and 10-kHz sine waves at -25.0 dBu
Signal-level Test (for Reference)
6. Verify that the output values of the speaker are as follows.
When components on the circuit board have been replaced, perform this test. 100 Hz at +14.0±1.5 dBu (flat)
1 kHz at +14.0±1.5 dBu (flat)
Items Required 10 kHz at +22.0±1.5 dBu (flat)

• Level meter
• Signal generator Speaker Output Verification (3)
• Dummy load resistor tool 3. Adjust the LEAD control to CLASSIC.
- 8 Ω (100 W or more)
4. Confirm the 8-Ω load resistor is connected to the speaker cables (red and
- 1/4-inch stereo phone plug with 100-Ω (1/2 W or more) load resistor
black).
connected between L, R, and GND
5. Input the following signals to the INPUT jack.
1-kHz sine wave at -25.0 dBu
Procedure
6. Verify that the output values of the speaker are as follows.
1. Go to Verifying the Version Number (p. 15) and execute steps 1 through 1 kHz at +14.0±1.5 dBu (flat)
4.
The version information is displayed.
Speaker Output Verification (4) (TUBE LOGIC)
2. Depress the [SOLO] (red) foot switch connected to the FOOT SW jack.
All LEDs light up, and the unit enters the Level Test mode. 3. Adjust the LEAD control to EXTREME.

4. Confirm the 8-Ω load resistor is connected to the speaker cables (red and
black).

5. Input the following signals to the INPUT jack.

100-Hz, 1-kHz, and 10-kHz sine waves at -35.0 dBu

6. Verify that the output values of the speaker are as follows.

100 Hz at +3.5±1.5 dBu (flat)
1 kHz at +3.5±1.5 dBu (flat)
10 kHz at +1.0±1.5 dBu (flat)

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Oct. 2010 CUBE-40XL

Circuit Board (Main Board)

fig.b-MAIN-1.eps

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Oct. 2010 CUBE-40XL

fig.b-MAIN-2.eps

19
Oct. 2010 CUBE-40XL

Circuit Diagram (Main Board: 1/3)

fig.d-MAIN-1-e.eps@L

arrangement

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Oct. 2010 CUBE-40XL

fig.d-MAIN-1-e.eps@R

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Oct. 2010 CUBE-40XL

Circuit Diagram (Main Board: 2/3)

fig.d-MAIN-2-e.eps@L

+ termi

22
 Oct. 2010 CUBE-40XL

fig.d-MAIN-2-e.eps@R

nal to Jack Board

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Oct. 2010 CUBE-40XL

Circuit Diagram (Main Board: 3/3)

fig.d-MAIN-3-e.eps

no signal
non clip

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Oct. 2010 CUBE-40XL

Circuit Board (Panel, Jack, Input, PS Board)

fig.b-PANEL.eps

25
Oct. 2010 CUBE-40XL

Circuit Diagram (Panel Board)

fig.d-PANEL.eps@L

26
Oct. 2010 CUBE-40XL

fig.d-PANEL.eps@R

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Oct. 2010 CUBE-40XL

Circuit Diagram (Jack Board)

fig.d-JACK.eps

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Oct. 2010 CUBE-40XL

Circuit Diagram (Input Board)

fig.d-INPUT.eps

Circuit Diagram (PS Board)

fig.d-PS.eps

29