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ELECTRIC BASS
TRB-4 II
SERVICE MANUAL
CONTENTS
OVERALL ASSEMBLY······························································· 2
ELECTRICAL PARTS································································· 4
CIRCUIT BOARD ······································································· 6
CIRCUIT DIAGRAM ··································································· 7
WIRING ······················································································ 8
SPECIFICATIONS······································································ 8
EG
011388
HAMAMATSU, JAPAN
0.9K-611
Printed in Japan '98.02

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Summary of Contents for Yamaha TRB-4 II

  • Page 1: Table Of Contents

    ELECTRIC BASS TRB-4 II SERVICE MANUAL CONTENTS OVERALL ASSEMBLY······························································· 2 ELECTRICAL PARTS································································· 4 CIRCUIT BOARD ······································································· 6 CIRCUIT DIAGRAM ··································································· 7 WIRING ······················································································ 8 SPECIFICATIONS······································································ 8 011388 HAMAMATSU, JAPAN 0.9K-611 Printed in Japan '98.02...
  • Page 2: Overall Assembly

    TRB-4 II OVERALL ASSEMBLY E11 Bridge Assembly BPX-4C ; GOLD (VK284600) E19 E20 G01 G02 G03 PANPOT: 20K G06 G07 G08 BASS: 50K MID: 50K TREBLE: 50K VOLUME: 5K...
  • Page 3 TRB-4 II PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY TRB-4II DX809320 Neck Assembly DX809330 Neck Assembly DX809340 Neck Assembly TLBIII A01a AA809390 Square Washer Body QC028300 Tuning Machine Assembly GB70L+GB7 (GOLD) QC028400 Tuning Machine Assembly GB70+GB7 (GOLD) EQ624100 Round Head Wood Screw 2.4X10 GOLD...
  • Page 4: Electrical Parts

    TRB-4 II ELECTRICAL PARTS REMARKS PART NO. DESCRIPTION REF NO. RANK ELECTRICAL PARTS QC432100 Electrical Unit 3-BAND EQ. IX808770 OP200GP OP AMP IG070700 TL062CP OP AMP IG070700 TL062CP OP AMP IX808780 TLC7662BEPA Q1-4 IX808790 2SK30ATM(O) IX808800 Diode E-301 D1-4 QC183900...
  • Page 5 TRB-4 II PART NO. DESCRIPTION REMARKS REF NO. RANK HF557470 Carbon Resistor 47K 1/6W J HF557470 Carbon Resistor 47K 1/6W J HF557220 Carbon Resistor 22K 1/6W J HF554330 Carbon Resistor 33 1/6W J HF557180 Carbon Resistor 18K 1/6W J HF557220...
  • Page 6: Circuit Board

    TRB-4 II CIRCUIT BOARD BASS TREB PANPOT Battery 9V NECK BRIDGE OUTPUT jack PICKUP PICKUP VOLUME REAR PICKUP FRONT PICKUP Component side Pattern side 4NB70-QC43210...
  • Page 7: Circuit Diagram

    TRB-4 II CIRCUIT DIAGRAM TC7662...
  • Page 8: Wiring

    TRB-4 II WIRING FRONT PICKUP REAR PICKUP to bridge GND VOLUME PANPOT Box for dry cell TREB OUTPUT jack BASS Equalizer 50k x3 SPECIFICATIONS STANDARD SPECIFICATIONS FINGERBOARD Scale Length 889.0mm Material Rosewood ····················································································· ···································································································· Body-Neck Construction Bolt On Fingerboard Width 0-F 40.0mm,12-F 56.9mm...