Yamaha RBX774/775 manual

7/23/2019 Yamaha RBX774/775 manual

http://slidepdf.com/reader/full/yamaha-rbx774775-manual 1/100.768K-072 Printed in J apan ’02.03

EG 011634

ELECTRIC BASS

HAM AM ATSU, JAPAN

CONTENTS

OVERALL ASSEMBLY ............................................ 2ELECTRICAL PARTS ............................................. 6CIRCUIT BOARD ............................................ 7CIRCUIT DIAGRAM .................................................. 8WIRING .................................................................... 9SPECIFICATIONS ............................................... 10This document is printed on chlorine free (ECF) paper with soy ink.

RBX774/RBX775SERVICE MANUAL

RBX775RBX774


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RBX774/RBX775

2

A01a

A01b

A seal is attached

on the rear of the neck.

RBX 774

E02

E10

E21

E01 E04 E04

E28 F01a F08 F09 F10M.VOLUME: A 20KΩ

E28a

E28 F01a F08 F09 F10M.TONE: A 20KΩ

E28a

A01

E26

E27E25

D01

E11

E08 E09

E14

E11 E12

G01 G04

G03

G06 G09

G08

E18

E19

E08

E09

E26

E27

F11 F11a F11b F11c

E25

F01c

F01b F03

F01 F17

E31 E33

F06 F07

F04

F05

OVERALL ASSEMBLY

J ack InstallationF11

F11c

F11

F11a

F11b

Bridge Assembly: BPZ-8 Diecast (QC674000)E18

B01

B02

RBX774



RBX774/RBX77

: New Parts RANK: J apan only

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OVERALL ASSEMBLY RBX774A01 Neck Assembly BL with Head PanelA01 Neck Assembly FSL with Head PanelA01 Neck Assembly FLB with Head PanelA01a Seal (QC67460)

A01b Head Panel Natural (QC67250)

D01 Body

E01 Tuning Machine Assembly RM1243 (Black) Right 2 09E02 Tuning Machine Assembly RM1243L (Black) Left 2 09E04 Round Head Wood Screw 2.4X10 FCM3BL Black 4 01E08 Rod Cover BlackE09 Round Head Wood Screw 2.7X13 FCM3BL Black 2 01E10 Nut Urea 40mm (Black)E11 Neck Joint Bushing Black 4 04E12 Oval Head Tapping Screw 4.5X35 FCM3BL Black 2E14 Oval Head Tapping Screw 4.5X40 FCM3BL Black 2E18 Bridge Assembly BPZ-8 (Black) Diecast 4E19 Flat Head Tapping Screw 3.0X25 FCM3BL Black 8E21 Strings H4030 1set(4pcs) (AA80931)E25 Strap Button SG-type (Black) 2

E26 Oval Head Tapping Screw 3.5X25 FCM3BL Black 2 01E27 Spacer Felt (Black) 2 01E28 Knob Assembly Black M.VOLUME,M.TONE 2 07E28a Screw M3.0X6 ZMC-BL Black 2E31 Back Cover Electrical (Black)E33 Oval Head Wood Screw 2.7X13 FCM3BL Black 4 03

F01 Electrical Unit (QC67440)F01a Circuit Board with VOL,TONE VRF01b Toggle Switch 3P DM-20 PICKUPF01c Toggle Switch (Mini) ON-ON (Black) BOOST (ON-OFF) 06F03 Knob, Pickup Switch SGV-type FCM3BL BlackF04 Nut Black with Pickup SwitchF05 Nut Black with Boost SwitchF06 Box for Dry Cell 04F07 Pan Head Tapping Screw 3.0X8 FCM3BL Black 2F08 Hexagonal Nut with Volume 2

F09 Flat Washer with Volume 2F10 Toothed Lock Washer with Volume 2F11 Jack Gold 07F11a Hexagonal NutF11b Rubber RingF11c Toothed Lock WasherF17 Round Head Wood Screw 2.7X13 FCM33G for Earth Lug (Chrome) 2 03

G01 Pickup Assembly H/B (Black) FRONT 13G03 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02G04 Pickup Cushion 55X25X18 02G06 Pickup Assembly H/B (Black) REAR 13G08 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02G09 Pickup Cushion 55X25X18 02

H01 Accessory Unit G-1 1set 07

Cord D 05Wrench #1.5Wrench #5

H02 Battery 9V Dry Cell (PC10008)

Bridge Assembly BPZ-8 (Black) Diecast 4B01 Pan Head Screw 3.0X40 FCM3BL Black 4 01B02 Spring Black 4 01

AAX34350AAX34360AAX34370

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QC279100QC279800VD763600QC67270003704270QC672600QC205200QC685100QC685200QC674000QC685300

--QC656200

QC613000VB793700QC573500AAX35960QC674300EB620020

--QC687400QC687500QC677900QC685400

----

QA223300QC025000

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----

QA209900------

EA620060

QC460500VJ 388800QC556400QC460600VJ 388800QC556400

QC354000

QA262600------

QC674000EA330400VJ 402400

REF NO. PART NO. DESCRIPTION REMARKS QTY RANK

RBX774



RBX774/RBX775

4

A01a

A seal is attached

on the rear of the neck.

RBX 775

E02

E10

E22

E01 E04

E04

E28 F01a F08 F09 F10M.VOLUME: A 20KΩ

E28a

E28 F01a F08 F09 F10M.TONE: A 20KΩ

E28a

E21

A01

E26

E27E25

D01

E11

E08 E09

E14

E11 E12

G01 G04

G03

G06 G09

G08

E18

E19

E08

E09

E26

E27

F11 F11a F11b F11c

E25

F01c

F01b F03

F01 F17

E31 E33

F06 F07

F04

F05

A01b

Bridge Assembly: BPZ-8 Diecast (QC674000)E18

B01

B02

OVERALL ASSEMBLY

RBX775

F11c

F11

F11a

F11b

J ack InstallationF11



RBX774/RBX77


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OVERALL ASSEMBLY RBX775A01 Neck Assembly BL with Head PanelA01 Neck Assembly FSL with Head PanelA01 Neck Assembly FLB with Head PanelA01a Seal (QC67290)

A01b Head Panel Natural (QC67220)

D01 Body

E01 Tuning Machine Assembly RM1243 (Black) Right 3 09E02 Tuning Machine Assembly RM1243L (Black) Left 2 09E04 Round Head Wood Screw 2.4X10 FCM3BL Black 5 01E08 Rod Cover BlackE09 Round Head Wood Screw 2.7X13 FCM3BL Black 2 01E10 Nut Urea 43mm (Black)E11 Neck Joint Bushing Black 4 04E12 Oval Head Tapping Screw 4.5X35 FCM3BL Black 2E14 Oval Head Tapping Screw 4.5X40 FCM3BL Black 2E18 Bridge Assembly BPZ-8 (Black) Diecast 5E19 Flat Head Tapping Screw 3.0X25 FCM3BL Black 10E21 Strings H4030 1set(4pcs) (AA80931)E22 Strings H4055 Low-B (QB00400)

E25 Strap Button SG-type (Black) 2E26 Oval Head Tapping Screw 3.5X25 FCM3BL Black 2 01E27 Spacer Felt (Black) 2 01E28 Knob Assembly Black M.VOLUME,M.TONE 2 07E28a Screw M3.0X6 ZMC-BL Black 2E31 Back Cover Electrical (Black)E33 Oval Head Wood Screw 2.7X13 FCM3BL Black 4 03

F01 Electrical Unit (QC67440)F01a Circuit Board with VOL,TONE VRF01b Toggle Switch 3P DM-20 PICKUPF01c Toggle Switch (Mini) ON-ON (Black) BOOST (ON-OFF) 06F03 Knob, Pickup Switch SGV-type FCM3BL BlackF04 Nut Black with Pickup SwitchF05 Nut Black with Boost SwitchF06 Box for Dry Cell 04F07 Pan Head Tapping Screw 3.0X8 FCM3BL Black 2

F08 Hexagonal Nut with Volume 2F09 Flat Washer with Volume 2F10 Toothed Lock Washer with Volume 2F11 Jack Gold 07F11a Hexagonal NutF11b Rubber RingF11c Toothed Lock WasherF17 Round Head Wood Screw 2.7X13 FCM33G for Earth Lug (Chrome) 2 03

G01 Pickup Assembly H/B (Black) FRONT 13G03 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02G04 Pickup Cushion 55X25X18 02G06 Pickup Assembly H/B (Black) REAR 13G08 Pan Head Tapping Screw 2.6X35 FCM3BL Black 3 02G09 Pickup Cushion 55X25X18 02

H01 Accessory Unit G-1 1set 07Cord D 05Wrench #1.5Wrench #5

H02 Battery 9V Dry Cell (PC10008)

Bridge Assembly BPZ-8 (Black) Diecast 5B01 Pan Head Screw 3.0X40 FCM3BL Black 5 01B02 Spring Black 5 01

AAX34380AAX34390AAX34400

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QC279100QC279800VD763600QC67240003704270QC672300QC205200QC685100QC685200QC674000QC685300

----

QC656200QC613000VB793700QC573500AAX35960QC674300EB620020

--QC687400QC687500QC677900QC685400

----

QA223300QC025000

------

QA209900------

EA620060

QC472800VJ 388800QC556400QC472900VJ 388800QC556400

QC354000QA262600------

QC674000EA330400VJ 402400


RBX775



RBX774/RBX775

6


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ELECTRICAL PARTS RBX774/RBX775Circuit Board (QC68780)

Circuit Board (QC68780)C01 Mylar Capacitor 0.047uF/50V 01

C02 Ceramic Capacitor (chip) 47pF/50V J 01C03 Electrolytic Capacitor 1uF/50V 01C04 Mylar Capacitor 0.068uF/50V 02C05 Mylar Capacitor 0.068uF/50V 02C06 Mylar Capacitor 5600pF/50VC07 Electrolytic Capacitor 1uF/50V 01C08 Mylar Capacitor 2200pF/50V 01C09 Mylar Capacitor 0.22uF/50VC10 Electrolytic Capacitor 10uF/16V 01C11 Electrolytic Capacitor 10uF/16V 01D01 Diode (chip) RLS-73 01IC1 IC NJM062M OP AMP 02IC1 IC TL062CPS 03R01 Carbon Resistor (chip) 1M J 01R02 Carbon Resistor (chip) 220K J 01R03 Carbon Resistor (chip) 270K J 01R04 Carbon Resistor (chip) 470K J 01

R05 Carbon Resistor (chip) 6.8K J 01R06 Carbon Resistor (chip) 43K J 01R07 Carbon Resistor (chip) 12K J 01R08 Carbon Resistor (chip) 27K J 01R09 Carbon Resistor (chip) 6.8K J 01R10 Carbon Resistor (chip) 8.2K J 01R11 Carbon Resistor (chip) 8.2K J 01R12 Carbon Resistor (chip) 27K J 01R13 Carbon Resistor (chip) 1K J 01R14 Carbon Resistor (chip) 47K J 01R15 Carbon Resistor (chip) 47K J 01VR1 Variable Resistor 16T1-A20K L-18KC M.VOLUMEVR2 Variable Resistor 16T1-A20K L-18KC M.TONE

QC687400

QC687400UA154470

UB051470UI166100UA154680UA154680UA153560UI166100UA153220UA155220UI337100UI337100VB797600XD901A00XN309A00RD259100RD258220RD258270RD258470

RD256680RD257430RD257120RD257270RD256680RD256820RD256820RD257270RD256100RD257470RD257470QC687600QC687600


ELECTRICAL PARTS

WARNING : CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Whereapplicable) 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 REASONWHAT SO EVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyesto solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handlingfood.



RBX774/RBX77

CIRCUIT BOARD

Component side

Pattern side

Note: See parts list for details of circuit board component parts.

EPA-QC68740-2

to BOOST SWITCH to BATTERY DC9V

to OUTPUT JACK

M.VOLUMEM.TONE

to PICKUP SWITCH



8

FRONTPICKUP

PICKUP SWITCH(3P Toggle: DM-20)

BOOSTSWITCH(ON-OFF)

M.TONE M.VOLU

BAHH

REARPICKUP

OP AMP

OP AMP

Electrolytic Capacitor

Mylar Capacitor

Ceramic Capacitor

CIRCUIT BOARD



RBX774/RBX77

WIRING

GR

OR

BL

BL

BL

BL

RE

RE

WH

WH

FRONT PICKUP

Box for Dry Cell

M.VOLUMEA 20KΩ


OUTPUT JACK

to bridge ground

BOOST SWITCH(ON-OFF)

M.TONEA 20KΩ

REAR PICKUP

Screw the lug terminal incavity for the front pickup.

Screw the lugterminal in cavityfor the rear pickup.

Screw withthe followingearth lug.

CIRCUIT BOARD

RBX774

RBX775FRONT PICKUP

Box for Dry Cell

M.VOLUMEA 20KΩ


OUTPUT JACK

to bridge ground

BOOST SWITCH(ON-OFF)

M.TONEA 20KΩ

CIRCUIT BOARD

REAR PICKUP

Screw the lug terminal incavity for the front pickup.

Screw the lugterminal in cavityfor the rear pickup.

Screw withthe followingearth lug.

GR

OR

BL

BL

BL

BL

RE

RE

WH

WH



RBX774/RBX775

10

SPECIFICATIONS

STANDARD SPECIFICA TIONS

Scale Length .............................. 889.0mm

Body-Neck Construction .........Bolt OnLength

RBX774 ................................... 1134.0mm

RBX775 ................................... 1158.7mmWidth

RBX774 ................................... 324.4mm RBX775 ................................... 331.0mm

Net Weight RBX774 ................................... 3.9kg

RBX775 ................................... 4.0kg

COLOR

Body

BL ............................................Black

FSL .......................................... Flat Silver

FLB .......................................... Flat Blue

Neck

BL ............................................Black

FSL .......................................... Flat Silver

FLB .......................................... Flat Blue BODY

Material ...................................... AlderBody Depth ............................... 41mm

FINGERBOARD

Material ...................................... Rose

Fingerboard Width

RBX774 ................................... 0-F 40.0mm, 12-F 56.4mm RBX775 ................................... 0-F 43.0mm, 12-F 65.0mm

No. of Frets................................ 24

NECK

Material ...................................... MapleNeck Thickness ........................1-F 21.0mm, 12-F 24.4mm

PARTS

Hardware ...................................Black PlatedNut ..............................................Urea

Bridge ........................................BPZ-8 Diecast (Black)

Strings RBX774 ................................... H4030 (4pcs)

RBX775 ................................... H4030 (4pcs)

H4055 (Low-B)

CONTROLS

Volume ....................................... A 20KΩ x 1

Tone ........................................... A 20KΩ x 1

Pickup Switch ............................ 3 positi on Toggle Switch (DM -20)

Boost Switch .............................M ini Toggle Switch(2 pole 2 position)

PICKUPS

Front/ Rear ................................Humbucking

Magnet Front/ Rear ............................. Ferr ite

Yamaha RBX774/775 manual

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