Yamaha RBX774 Service Manual Download Page 8 | Manualshive

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RBX774/RBX775

8

CIRCUIT DIAGRAM

FRONT
PICKUP

PICKUP SWITCH
(3P Toggle: DM-20)

BOOST
SWITCH
(ON-OFF)

M.TONE

M.VOLUME

BAHH-02

REAR
PICKUP

OP AMP

OP AMP

Electrolytic Capacitor

Mylar Capacitor

Ceramic Capacitor

OUTPUT

JACK

BATTERY

DC9V

CIRCUIT BOARD

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Summary of Contents for RBX774

Page 1: ...ELECTRIC BASS HAMAMATSU JAPAN CONTENTS OVERALL ASSEMBLY 2 ELECTRICAL PARTS 6 CIRCUIT BOARD 7 CIRCUIT DIAGRAM 8 WIRING 9 SPECIFICATIONS 10 This document is printed on chlorine free ECF paper with soy ink RBX774 RBX775 SERVICE MANUAL RBX775 RBX774 ...

Page 2: ...E A 20KΩ E28a E28 F01a F08 F09 F10 M TONE A 20KΩ E28a A01 E26 E27 E25 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 Jack Installation F11 F11c F11 F11a F11b Bridge Assembly BPZ 8 Diecast QC674000 E18 B01 B02 RBX774 ...

Page 3: ...1c Toggle Switch Mini ON ON Black BOOST ON OFF 06 F03 Knob Pickup Switch SGV type FCM3BL Black F04 Nut Black with Pickup Switch F05 Nut Black with Boost Switch F06 Box for Dry Cell 04 F07 Pan Head Tapping Screw 3 0X8 FCM3BL Black 2 F08 Hexagonal Nut with Volume 2 F09 Flat Washer with Volume 2 F10 Toothed Lock Washer with Volume 2 F11 Jack Gold 07 F11a Hexagonal Nut F11b Rubber Ring F11c Toothed Lo...

Page 4: ...Ω E28a E28 F01a F08 F09 F10 M TONE A 20KΩ E28a E21 A01 E26 E27 E25 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 Jack Installation F11 ...

Page 5: ... DM 20 PICKUP F01c Toggle Switch Mini ON ON Black BOOST ON OFF 06 F03 Knob Pickup Switch SGV type FCM3BL Black F04 Nut Black with Pickup Switch F05 Nut Black with Boost Switch F06 Box for Dry Cell 04 F07 Pan Head Tapping Screw 3 0X8 FCM3BL Black 2 F08 Hexagonal Nut with Volume 2 F09 Flat Washer with Volume 2 F10 Toothed Lock Washer with Volume 2 F11 Jack Gold 07 F11a Hexagonal Nut F11b Rubber Ring...

Page 6: ...sistor chip 47K J 01 R15 Carbon Resistor chip 47K J 01 VR1 Variable Resistor 16T1 A20K L 18KC M VOLUME VR2 Variable Resistor 16T1 A20K L 18KC M TONE QC687400 QC687400 UA154470 UB051470 UI166100 UA154680 UA154680 UA153560 UI166100 UA153220 UA155220 UI337100 UI337100 VB797600 XD901A00 XN309A00 RD259100 RD258220 RD258270 RD258470 RD256680 RD257430 RD257120 RD257270 RD256680 RD256820 RD256820 RD257270...

Page 7: ...RBX775 7 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 VOLUME M TONE to PICKUP SWITCH ...

Page 8: ...CUIT DIAGRAM FRONT PICKUP PICKUP SWITCH 3P Toggle DM 20 BOOST SWITCH ON OFF M TONE M VOLUME BAHH 02 REAR PICKUP OP AMP OP AMP Electrolytic Capacitor Mylar Capacitor Ceramic Capacitor OUTPUT JACK BATTERY DC9V CIRCUIT BOARD ...

Page 9: ...kup Screw the lug terminal in cavity for the rear pickup Screw with the following earth lug CIRCUIT BOARD RBX774 RBX775 FRONT PICKUP Box for Dry Cell M VOLUME A 20KΩ PICKUP SWITCH 3P Toggle DM 20 OUTPUT JACK to bridge ground BOOST SWITCH ON OFF M TONE A 20KΩ CIRCUIT BOARD REAR PICKUP Screw the lug terminal in cavity for the front pickup Screw the lug terminal in cavity for the rear pickup Screw wi...

Page 10: ...Material Alder Body 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 Maple Neck Thickness 1 F 21 0mm 12 F 24 4mm PARTS Hardware Black Plated Nut 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 position Togg...

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