Yamaha TRB-JP2 User manual

Copyright (c) Yamaha Corporation. All rights reserved. PDF-K811 ’03.02
SERVICE MANUAL
EG 011672
ELECTRIC BASS
CONTENTS
OVERALL ASSEMBLY ............................................................. 2
ELECTRICAL PARTS ................................................................ 4
CIRCUIT BOARD ...................................................................... 6
CIRCUIT DIAGRAM.................................................................. 7
WIRING..................................................................................... 8
SPECIFICATIONS..................................................................... 9
TRB-JP2
HAMAMATSU, JAPAN
TRB-JP2 (TDR)

TRB-JP2
2
EQUALIZER TREBLE: W 50KΩ
E01 E03 E02 E03
E08
E15
A01
E20
E21
D01
E19
G03
G04G01
G08
G09G06
E12
E19 E21
E20
E13
E25
E27 E28
F08 F13 F08a F08b F08c
E24
EQUALIZER MID: W 50KΩ
E24
EQUALIZER BASS: W 50KΩ
E24
VOLUME: A 5KΩ
E23
F01
BALANCER: B 20KΩ
E23
F09 F10
F02 F04
E09 E10
E09 E11
F08c
F13
F08b
F10
F10
F09
F08a
OVERALL ASSEMBLY
Bridge Assembly: BPX-6C Gold (VK285200)
F08
Replacement nut is supplied without string slot.
E12
B02
B03
B01
B02
B04
Jack Installation

TRB-JP2
3
: New Parts RANK: Japan only
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*
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REF NO.
PART NO. DESCRIPTION REMARKS
QTY RANK
OVERALL ASSEMBLY TRB-JP2
A01 Neck Assembly TDR
A01 Neck Assembly AM
D01 Body
E01 Tuning Machine Assembly GB72L (Gold) RIGHT 3 09
E02 Tuning Machine Assembly GB72 (Gold) LEFT 3 09
E03 Round Head Wood Screw 2.4X10 (Gold) 6 02
E08 Nut Bone 56mm 07
E09 Neck Joint Bushing Gold 6
E10 Oval HeadTapping Screw 5.0X40 (Gold) 4
E11 Oval HeadTapping Screw 5.0X35 (Gold) 2
E12 Bridge Assembly BPX-6C (Gold) 21
E13 Oval HeadTapping Screw 4.0X35 (Gold) 5 01
E15 Strings H6010 1set (QC02470)
E19 Strap Button EP-B2 (Gold) 2 02
E20 Oval HeadTapping Screw 3.5X25 (Gold) 2 02
E21 Spacer Felt (Black) 201
E23 Knob Assembly L Large LEX B-22 BALANCER, VOLUME 2 07
E24 Knob Assembly S Small LEX B-18 EQUALIZER BASS/MID/TREBLE 307
E25 Instruction Sheet 05
E27 Back Cover Electrical (Black) 08
E28 Oval Head Tapping Screw 2.6X12 FCM3BL Black 5
F01 Circuit Board 3-BAND EQ. Control
F02 Box for Dry Cell with Battery Cord 07
F04 Pan Head Tapping Screw 3.0X8 FCM3BL Black 2
F08 Electrical Unit(Jack Assy) (QC64430)
F08a Jack ST Open type (Gold) OUTPUT 04
F08b Hexagonal Nut Gold
F08c Flat Washer Gold
F09 Jack Panel JCB-2 (Gold) 06
F10 Oval Head Wood Screw 2.7X13 (Gold) 2
F13 Toothed Lock Washer A9S FNM33G (Nickel) 01
G01 Pickup Assembly Humcancel S/C FRONT 17
G03 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02
G04 Pickup Cushion 02
G06 Pickup Assembly Humcancel S/C REAR 17
G08 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02
G09 Pickup Cushion 02
H01 Accessory Unit G-1 1set 07
Cord D 05
Wrench #1.5 01
Wrench #5 04
H02 Battery 6LR61 9V Dry Cell (QC65770)
I07 Hard Case GB20JP (QC75890)
Bridge Assembly BPX-6C (Gold) 21
B01 Bridge Base Gold
B02 Bridge Piece Assembly Gold with set screw (M3X15) 6 06
B03 Pan Head Screw 3.5X38 FCM3BL Black 6 02
B04 Spring FCM3BL (Black) 6 01
AAX46370
AAX46380
--
QC648000
QC648100
03704070
QC023900
QC205100
VS414200
QC748700
VK285200
QA170100
--
QC224600
03706630
VB793700
QC205700
QC205800
QC429500
QC425800
EN220040
QC748600
VK505700
QC025000
--
VS001100
AAX30770
AAX30780
QC385500
03706300
ET800180
QC209800
VJ388800
QC232300
QC209900
VJ388800
QC232300
QC354000
QA262600
AA804050
AA805430
--
--
VK285200
VK286100
QC179000
EX803380
VJ402400

TRB-JP2
4
: New Parts RANK: Japan only
*
*
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ELECTRICAL PARTS TRB-JP2
Circuit Board 3-BAND EQ. Control (QC55840)
Circuit Board 3-BAND EQ. Control (QC55840)
Hexagonal Nut with Volume 5
Flat Washer with Volume 5
Toothed Lock Washer with Volume 5
Hexagonal Nut 506
C01 Tantalum Capacitor 0.1uF/16V 02
C03 Tantalum Capacitor 0.1uF/16V 02
C05 Electrolytic Cap. 22u/16V R3A-16V220 05
C06 Electrolytic Cap. 22u/16V R3A-16V220 05
C31 Electrolytic Cap. 10u/16V RC3-16V100 01
C32 Ceramic Capacitor 0.01uF 01
C33 Electrolytic Cap. 22u/16V R3A-16V220 05
C34 Electrolytic Cap. 10u/16V RC3-16V100 01
C35 Ceramic Capacitor 0.01uF 01
C36 Electrolytic Cap. 10u/16V RC3-16V100 01
C37 Ceramic Capacitor 0.01uF 01
C38 Electrolytic Cap. 10u/16V RC3-16V100 01
C39 Electrolytic Cap. 1u/50V RC3-50V010M 01
C40 Electrolytic Cap. 1u/50V RC3-50V010M 01
C41 Ceramic Capacitor 0.01uF 01
C42 Ceramic Capacitor 0.01uF 01
C51 Ceramic Capacitor 100pF/50V 01
C52 Ceramic Capacitor 100pF/50V 01
C53 Electrolytic Cap. 22u/16V R3A-16V220 05
C61 Mylar Capacitor 0.068uF/50V 02
C62 Metal Film Resistor 33K 1/4W 01
C63 Electrolytic Cap. 1u/50V RC3-50V010M 01
C71 Ceramic Capacitor 47pF/50V 01
C72 Mylar Capacitor 0.027uF 01
C73 Mylar Capacitor 0.033uF 03
C81 Mylar Capacitor 2200pF 01
C82 Mylar Capacitor 1500pF 01
C83 Ceramic Capacitor 100pF/50V 01
C84 Ceramic Capacitor 330pF/50V 01
C85 Ceramic Capacitor 330pF/50V 01
CN1 Connector B2B-XH-A 2P to FRONT Pickup 01
CN2 Connector B2B-XH-A 2P to REAR Pickup 01
CN3 Connector B4B-XH-A 4P to OUTPUT Jack 01
CN4 Connector B2B-XH-A 2P to Battery 01
D01 Diode E-301 05
D03 Diode E-301 05
D05 Diode 1SR139-400
IC1 IC OP200GP OP AMP 12
IC2 IC TL062CP OP AMP 07
IC3 IC TL062CP OP AMP 07
IC4 IC TC7662BEPA REGULATOR 10
IC4 IC ICL7660SIPA 10
L01 Coil ELEXG101KA 100uH 04
-04 Coil ELEXG101KA 100uH 04
Q01 FET 2SK30ATM(O) 04
Q03 FET 2SK30ATM(O) 04
R01 Carbon Resistor 330K 1/6W J
R02 Jumper Wire L=5mm
R03 Carbon Resistor 47K 1/6W J 01
R04 Jumper Wire L=5mm
R05 Carbon Resistor 2.2M 1/6W J 03
R07 Carbon Resistor 2.2M 1/6W J 03
R09 Carbon Resistor 6.8K 1/6W J 01
R11 Carbon Resistor 6.8K 1/6W J 01
R13 Carbon Resistor 10K 1/6W J 01
R14 Carbon Resistor 10K 1/6W J 01
R15 Carbon Resistor 4.7K 1/6W J 01
R16 Carbon Resistor 4.7K 1/6W J 01
R21 Carbon Resistor 470K 1/6W J 03
R23 Carbon Resistor 27K 1/6W J 01
R31 Carbon Resistor 33K 1/6W J 01
R32 Carbon Resistor 27K 1/6W J 01
QC748600
QC748600
--
--
--
QC434900
FP355100
FP355100
FX804200
FX804200
UI137100
FG444100
FX804200
UI137100
FG444100
UI137100
FG444100
UI137100
UI166100
UI166100
FG444100
FG444100
FG212100
FG212100
FX804200
UA154680
VC839100
UI166100
FG211470
UA154270
UA154330
UA153220
UA153150
FG212100
FG212330
FG212330
LB918020
LB918020
LB918040
LB918020
IX808800
IX808800
AAX46390
IX808770
IG070700
IG070700
IX808780
IX808780
GX804490
GX804490
IX808790
IX808790
HF558330
--
HF557470
--
HF559220
HF559220
HF556680
HF556680
HF557100
HF557100
HF556470
HF556470
HF558470
HF557270
HF557330
HF557270
REF NO.
PART NO. DESCRIPTION REMARKS
QTY RANK
ELECTRICAL PARTS




TRB-JP2
5
: New Parts RANK: Japan only
REF NO.
PART NO. DESCRIPTION REMARKS
QTY RANK
R51 Carbon Resistor 47K 1/6W J 01
R52 Carbon Resistor 47K 1/6W J 01
R53 Carbon Resistor 33K 1/6W J 01
R54 Carbon Resistor 33 1/6W J 03
R55 Carbon Resistor 18K 1/6W J 01
R56 Carbon Resistor 22K 1/6W J 01
R57 Carbon Resistor 33 1/6W J 03
R61 Metal Film Resistor 33K 1/4W 01
R62 Mylar Capacitor 0.068uF/50V 02
R63 Carbon Resistor 200K 1/6W J
R66 Metal Film Resistor 33K 1/4W 01
R67 Carbon Resistor 36K 1/6W J
R68 Carbon Resistor 10K 1/6W J 01
R71 Carbon Resistor 33 1/6W J 03
R72 Carbon Resistor 22K 1/6W J 01
-75 Carbon Resistor 22K 1/6W J 01
R76 Carbon Resistor 1.0K 1/6W J 01
R81 Carbon Resistor 33K 1/6W J 01
R82 Carbon Resistor 47K 1/6W J 01
R83 Carbon Resistor 10K 1/6W J 01
R84 Carbon Resistor 10K 1/6W J 01
R85 Carbon Resistor 22K 1/6W J 01
R86 Carbon Resistor 10K 1/6W J 01
R87 Carbon Resistor 3.3K 1/6W J 01
R88 Carbon Resistor 47K 1/6W J 01
R89 Carbon Resistor 47K 1/6W J 01
VR1 Rotary Variable Resistor RK14K1240B24 20KB BALANCER 04
VR2 Rotary Variable Resistor RK14K1240A53 5KA VOLUME 04
VR3 Rotary Variable Resistor RK14K1240W54 50KW EQUALIZER BASS/MID/TREBLE 04
-5 Rotary Variable Resistor RK14K1240W54 50KW 04
HF557470
HF557470
HF557330
HF554330
HF557180
HF557220
HF554330
VC839100
UA154680
HF558200
VC839100
HF557360
HF557100
HF554330
HF557220
HF557220
HF556100
HF557330
HF557470
HF557100
HF557100
HF557220
HF557100
HF556330
HF557470
HF557470
AAX14660
AAX14670
AAX14680
AAX14680
*
*

TRB-JP2
6
to BATTERY 9V
not installed
to OUTPUT JACK
VOLUME
to REAR PICKUP
to FRONT PICKUP
not installed
BALANCER
NECK
PICKUP BRIDGE PICKUP
not installed
EQUALIZER
BASS EQUALIZER MID EQUALIZER TREBLE
CIRCUIT BOARD
Component side
Pattern side
Note: See parts list for details of circuit board component parts.
EPA-QC74860-2

TRB-JP2
7
CIRCUIT DIAGRAM
Electrolytic Capacitor
Tantalum Capacitor
Mylar Capacitor
Ceramic Capacitor
Metal Film Resistor
Electrolytic Capacitor
(Audio)
BALANCER
VOLUME
MID
BASS
TREBLE
Note
Note
FRONT
PICKUP
REAR
PICKUP BATTERY
9V
OUTPUT
JACK
OP AMP
OP AMP
OP AMP OP AMP
REGULATOR
BAJJ-09
Note: C62 uses a resistor and R62 uses a capacitor.

TRB-JP2
8
WIRING
EQUALIZER
TREBLE
W 50KΩ
FRONT PICKUP
REAR PICKUP
OUTPUT JACK
EQUALIZER
MID
W 50KΩ
EQUALIZER
BASS
W 50KΩ
BALANCER
B 20KΩ
Box for Dry Cell
to bridge ground
soldering
VOLUME
A 5KΩ
BR
GY
RE
BL
WH

TRB-JP2
9
SPECIFICATIONS
STANDARD SPECIFICATIONS
Scale Length.............................. 889.0mm
Body-Neck Construction .........Bolt On
Length........................................ 1200.0mm
Width ......................................... 353.0mm
Net Weight ................................ 5.2kg
COLOR
Body
TDR .........................................Translucent Dark Red
AM...........................................Amber
Neck
TDR .........................................Translucent Dark Red
AM...........................................Amber
BODY
Material......................................Exotic Maple + Ash + Alder +
Exotic Maple Back
Body Depth ...............................43mm
FINGERBOARD
Material......................................Ebony
Fingerboard Width................... 0-F 56.0mm, 12-F 81.1mm
No. of Frets................................26
NECK
Material......................................Maple
Neck Thickness ........................ 1-F 21.0mm, 12-F 23.5mm
PARTS
Hardware ...................................Gold Plated
Nut..............................................Bone
Bridge ........................................BPX-6C (Gold)
Strings........................................ H6010
CONTROLS
Volume ....................................... A 5KΩx 1
Balancer.....................................B 20KΩx 1
Equalizer....................................W 50KΩx 3 (BASS, MID, TREBLE)
PICKUPS
Front/Rear ................................ Humcancel Single Coil
Magnet
Front/Rear .............................Alnico V
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.