SERVICE MANUAL
ELECTRIC BASS
RBX 6JM
CONTENTS
OVERALL ASSEMBLY
•••••••••••••••••••••••••••••••••••••••••••••••••••••••
2
ELECTRICAL PARTS
••••••••••••••••••••••••••••••••••••••••••••••••••••••••
4
CIRCUIT BOARDS
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6
CIRCUIT DIAGRAM
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7
WIRING
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8
SPECIFICATIONS
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8
HAMAMATSU, JAPAN
1.2K-641 Printed in Japan '99.03
EG
011464
19990401-140000
A01
D01
E04
E12
E19E18
E21
E27E26E25
G04G03G01
G09G08G06
E01
E02 E04
E10
E11
E28
E28
E28
E28
E33E31
E30
F07F02
F01
BALANCER : 20k ohm
BASS EQ.: 50k ohm
MID EQ.: 50k ohm
VOLUME : 5k ohm
E28
HIGH EQ.: 50k ohm
F11
E27E26
E25
A01a
A seal is attached
on the rear of the neck.
RBX 6JM
B03
B03
B01
B02b
B02a
B05
B06
E18
Bridge Assembly : BPX-6C Solid Brass GOLD (QC471100)
RBX 6JM
2
OVERALL ASSEMBLY
RBX 6JM
3
*
New Parts
RANK:Japan only
REF NO.
A01
A01
A01a
D01
E01
E02
E04
E10
E11
E12
E18
E19
E21
E25
E26
E27
E28
E30
E31
E33
F01
F02
F07
F11
G01
G03
G04
G06
G08
G09
H01
B01
B02a
B02b
B03
B05
B06
PART NO.
DX809790
DX809780
- -
- -
QC336300
QC336400
03704070
QC471400
QC205200
VI825000
QC471100
QA170100
- -
BB802460
EM630250
VB793700
QC032200
QC429500
QC513200
ER327136
QC432100
VK505700
EJ330086
QC437300
QC474100
03741140
CB815450
QC474200
03741140
CB815450
QC354000
QC471100
QC471200
AAX03190
AAX03200
EA330400
AX818240
AX818250
DESCRIPTION
OVERALL ASSEMBLY
Neck Assembly
Neck Assembly
Seal
Body
Tuning Machine Assembly
Tuning Machine Assembly
Round Head Wood Screw
Nut
Neck Joint Bushing
Oval Head Tapping Screw
Bridge Assembly
Oval Head Tapping Screw
Strings
Strap Button
Oval Head Tapping Screw
Spacer
Knob
Instruction sheet
Back Cover
Oval Head Wood Screw
Electrical Unit
Box for Dry Cell
Pan Head Tapping Screw
Electrical Unit(Jack Assy)
Pickup Assembly
Pan Head Tapping Screw
Pickup Cushion
Pickup Assembly
Pan Head Tapping Screw
Pickup Cushion
Accessory Unit
Bridge Assembly
Bridge Base
Bridge Piece Assembly
Bridge Piece Assembly
Pan Head Screw
Spring
Spring
RM1243 (GOLD)
RM1243L (GOLD)
2.4X10 GOLD
51mm
BL
5.0X40 MFZN2BL (BL)
BPX-6C (GOLD)
4.0X35 GOLD
H6010
ST type (GOLD)
3.0X25 GOLD
BL
GOLD
Electrical (BL)
2.7X13 FCM3BL (BL)
(1) 3-BAND EQ.
(2)
3.0X8 FCM3BL (BL)
(3)
3.0X35 FCM3BL (BL)
85LX17WX15H
3.0X35 FCM3BL (BL)
85LX17WX15H
(G-1)
BPX-6C (GOLD)
P=16.5 (GOLD)
GOLD with screw
GOLD with screw
3.0X40 FCM3BL (BL)
30mm (BL)
25mm (BL)
REMARKS
RBX 6JM
TB
RR
(QC47030)
Solid Brass
1set (QC02470)
(EN23013)
(EB62002)
(QC02500)
Front
Rear
1set
Solid Brass
1-3
4-6
1-3 string
4-6 string
QTY
3
3
6
6
6
5
2
2
2
5
5
2
3
4
3
4
3
3
6
3
3
RANK
09
09
02
09
04
01
01
02
02
01
06
05
08
01
29
07
01
10
19
01
02
19
01
02
07
01
02
02
*
*
*
*
*
*
*
*
*
*
*
*
*
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes
to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.
RBX 6JM
4
ELECTRICAL PARTS
DESCRIPTION
ELECTRICAL PARTS
Electrical Unit
Hexagonal Nut
Tuntalum Capacitor
Electlytic Cap.
Electlytic Cap.
Electlytic Cap.
Ceramic Capacitor
Electlytic Cap.
Electlytic Cap.
Ceramic Capacitor
Electlytic Cap.
Ceramic Capacitor
Electlytic Cap.
Electlytic Cap.
Electlytic Cap.
Ceramic Capacitor
Ceramic Capacitor
Ceramic Capacitor
Ceramic Capacitor
Electlytic Cap.
Mylar Capacitor
Mylar Capacitor
Electlytic Cap.
Mylar Capacitor
Mylar Capacitor
Ceramic Capacitor
Mylar Capacitor
Mylar Capacitor
Mylar Capacitor
Ceramic Capacitor
Ceramic Capacitor
Ceramic Capacitor
Connector
Connector
Connector
Connector
Diode
Diode
IC
IC
IC
IC
Ciol
FET
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
REF NO.
C1-4
C05
C06
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C51
C52
C53
C61
C62
C63
C71
C72
C73
C74
C81
C82
C83
C84
C85
CN1
CN2
CN3
CN4
D1-4
D5
IC1
IC2
IC3
IC4
L1-4
Q1-4
R1-4
R5-8
R09
R10
R11
R12
R13
R14
R15
R16
R21
R23
R31
R32
R51
R52
R53
R54
R55
R56
R57
R61
R62
R63
R64
PART NO.
QC432100
QC434900
FP355100
FX804200
FX804200
UI137100
FG444100
FX804200
UI137100
FG444100
UI137100
FG444100
UI137100
UI166100
UI166100
FG444100
FG444100
FG212100
FG212100
FX804200
UA154330
UA155100
UI166100
UA154220
UA154220
FG212100
UA153100
UA153220
UA153150
FG212100
FG212330
FG212330
LB918020
LB918020
LB918040
LB918020
IX808800
QC183900
IX808770
IG070700
IG070700
IX808780
GX804490
IX808790
HF559100
HF559220
HF556680
HF556470
HF556680
HF556470
HF557100
HF557100
HF556470
HF556470
HF558470
HF557220
HF557330
HF557270
HF557470
HF557470
HF557220
HF554330
HF557180
HF557220
HF554330
HF557330
HF557330
HF557120
HF557680
3-BAND EQ.
0.1uF/35V
22u/16V R3A-16V220
22u/16V R3A-16V220
10u/16V RC3-16V100
0.01uF/50V
22u/16V R3A-16V220
10u/16V RC3-16V100
0.01uF/50V
10u/16V RC3-16V100
0.01uF/50V
10u/16V RC3-16V100
1u/50V RC3-50V010M
1u/50V RC3-50V010M
0.01uF/50V
0.01uF/50V
100pF/50V
100pF/50V
22u/16V R3A-16V220
0.033uF
0.1uF/50V
1u/50V RC3-50V010M
0.022uF
0.022uF
100pF/50V
1000pF/50V
2200pF
1500pF
100pF/50V
330pF/50V
330pF/50V
B2B-XH-A 2P
B2B-XH-A 2P
B4B-XH-A 4P
B2B-XH-A 2P
E-301
1SR139-100
OP200GP
TL062CP
TL062CP
TLC7662BEPA
ELEXG101KA 100uH
2SK30ATM(O)
1.0M 1/6W J
2.2M 1/6W J
6.8K 1/6W J
4.7K 1/6W J
6.8K 1/6W J
4.7K 1/6W J
10K 1/6W J
10K 1/6W J
4.7K 1/6W J
4.7K 1/6W J
470K 1/6W J
22K 1/6W J
33K 1/6W J
27K 1/6W J
47K 1/6W J
47K 1/6W J
22K 1/6W J
33 1/6W J
18K 1/6W J
22K 1/6W J
33 1/6W J
33K 1/6W J
33K 1/6W J
12K 1/6W J
68K 1/6W J
REMARKS
RBX 6JM
FRONT PICKUP
REAR PICKUP
OUTPUT JACK
BATTERY
OP AMP
OP AMP
OP AMP
QTY
*
:
New Parts RANK:Japan only
RANK
29
06
02
05
05
01
01
05
01
01
01
01
01
01
01
01
01
01
01
05
03
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
05
01
12
07
07
10
04
04
01
03
01
01
01
01
01
01
01
01
03
01
01
01
01
01
01
03
01
01
03
01
01
01
01
RBX 6JM
5
DESCRIPTION
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Carbon Resistor
Rotary Variable Resistor
Rotary Variable Resistor
Rotary Variable Resistor
Rotary Variable Resistor
Rotary Variable Resistor
Trimmer Potentiometer
Trimmer Potentiometer
REF NO.
R65
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R89
VR1
VR2
VR3
VR4
VR5
VR7
VR8
PART NO.
HF557470
HF558100
HF557510
HF557270
HF557100
HF557100
HF557180
HF557100
HF556220
HF557470
HF557470
HF557330
HF557470
HF557100
HF557100
HF557220
HF557100
HF556330
HF557470
HF557470
HX809140
HX809150
HX809160
HX809160
HX809160
HX809170
HX809170
47K 1/6W J
100K 1/6W J
51K 1/6W J
27K 1/6W J
10K 1/6W J
10K 1/6W J
18K 1/6W J
10K 1/6W J
2.2K 1/6W J
47K 1/6W J
47K 1/6W J
33K 1/6W J
47K 1/6W J
10K 1/6W J
10K 1/6W J
22K 1/6W J
10K 1/6W J
3.3K 1/6W J
47K 1/6W J
47K 1/6W J
EWCE6AF22B24 20K
EWCE6AF22A53 5K
EWCE6AF22B54 50K
EWCE6AF22B54 50K
EWCE6AF22B54 50K
EVND8AA0 BQ3 4.7K
EVND8AA0 BQ3 4.7K
REMARKS
BALANCER
VOLUME
EQUALIZER BASS
EQUALIZER MID
EQUALIZER TREBLE
QTY
*
:
New Parts RANK:Japan only
RANK
01
01
03
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
07
07
07
07
07
04
04
RBX 6JM
6
Pattern side
Component side
BASS MID TREB
BALANCER
FRONT PICKUP
REAR PICKUP
VOLUME
OUTPUT jack
Battery 9V
EPA-QC43210-2
CIRCUIT BOARD
CN3
(
OUTPUT
C42 C41
JACK)
0.01µ 0.01µ
9V
CN4
1
3
2
1
2
4
(BATTERY)
0.01µ C37
L3
D5
C34
L1100µH
C33
A
0.01µ
C38
C35
C36
10µ/16V
10µ/16V
+
(M.VOL)
VR2
R55
5KA
3
18K
100p
-
6
7
R54
IC1-2
R53
C52
22K
2
45
1
7
22K
R56
3
2
1
8
1µ/50V
1µ/50V
TC7662
IC4
6
L2
C40
5
12K
R65
3
+
R63
1µ/50V
C63
OP200GP
1
2
(BASS)
68K
R64
47K
A
VR5
50KB*2
(TREBLE)
3
1
47K
10K
2
47KR80
C74
1000p
R78
2
R79
47K
10K
R77
18K
R76
2.2K
1
3
22K
R85
C85
330p
330p
R89
R86
R87
2
1
3.3K
47K
R88
1
2
C32
4
8
+
-
47K
R52
47K
C51
3
100p
R51
0.01µ
IC1-1
4.7K
R13
1
3
2
R15
C31
C5
10K
+
A
R31
33K27KR32
+
R74
C61
R61
33K
IC2-1
100p
R62
OP200GP
+
-
8
4
0.1µ
33K
C73
TL062
3
2
0.033µ
C62
R57
33
(BAL)
R14
A
2
4.7K
B4.7K
C6
1
+
10K
VR1
20KB*2
BALANCER
+
Q2
C1
+
2.2M
R1
1M
2SK30
6.8K
E301
R9
2SK30
D1
R5
Q1
FRONT
2SK30
+
2.2M
R7
C3
1M
6.8K
1M
2.2M
R10
D2
R6
C2
R2
2SK30
Q4
R3
R11
E301
D3
Q3
E301
2
1
CN2
2
1
CN1
REAR
P.U.
P.U.
C82
10K
-
C81
10K
0.022µ
C72
R72
51K
100K
5
IC3-2
IC2-2
+
4
8
R84
R73
27K
6
R75
1500p2200p
100p
R71
C71
0.022µ
6
5
TL062
-
+
10K
C83R83
47K
R82
VR8
B4.7K
3
TL062
R81
33K
R4
IC3-1
TL062
1
E301
22K
1M
R8
C4
+
2.2M
4.7K
+
R12
D4
3
2
R23
-
VR3
22µ/16V
A
50KB
(MID)
VR4
Ceramic Capacitor
Electrolytic Capacitor
Electrolytic Capacitor
Mylar Capacitor
Tantalum Capacitor
(Audio)
50KB
C53
+
33
4.7K
VR7
C84
3
100µH
100µH
100µH
C39
470K
R21
10µ/16V
L4
22µ/16V
1
7
7
R16
10K
0.1µ/16V
0.1µ/16V
0.1µ/16V
0.1µ/16V
22µ/16V
10µ/16V
22µ/16V
STE-BACC-02
RBX 6JM
7
CIRCUIT DIAGRAM
FRONT PICKUP REAR PICKUP
Box for dry cell
VOLUME
5k ohm
BALANCER
20k ohm
BASS
MID
TREB
OUTPUT
Equalizer
50k ohm
to bridge GND
RBX 6JM
8
WIRING
SPECIFICATIONS
STANDARD SPECIFICATIONS
Scale Length ··········································889.0mm
Body-Neck Construction·······················Bolt On
Length····················································1157.3mm
Width ·····················································351.0mm
Net Weight·············································5.0kg
COLOR
Body
TB······················································Turquoise Blue
RR······················································Ruby Red
Neck
TB······················································Turquoise Blue
RR······················································Ruby Red
BODY
Material··················································Alder
Veneer····················································Figured Maple
Body Depth············································44.0mm
FINGERBOARD
Material··················································Ebony
Fingerboard Width·································0-F 51.0 mm, 12-F 83.0 mm
No. of Frets············································24
NECK
Material··················································Maple
Neck Thickness······································1-F 20.0 mm, 12-F 23.2 mm
PARTS
Hardware················································Gold Plated
Nut ·························································Bone
Bridge ····················································BPX-6C: Solid Brass (Gold)
Strings····················································YAMAHA H6010
CONTROLS
Volume ··················································5k ohm x 1
Balancer·················································20k ohm x 1
Equalizer················································50k ohm x 3
PICKUPS
Front/Rear··············································Double Coil
Magnet
Front/Rear··········································Alnico
/
