Yamaha Guitar BB404 User Manual
ELECTRIC BASS  
BB404/ BB405  
SERVICE MANUAL  
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 INYOUR  
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.  
BB 405  
CONTENTS  
OVERALL ASSEMBLY  
CIRCUIT DIAGRAM  
............................................ 2  
.................................................. 6  
WIRING  
SPECIFICATIONS  
.................................................................... 6  
................................................. 7  
This document is printed on chlorine free (ECF) paper with soy ink.  
011621  
EG  
HAMAMATSU, JAPAN  
0.768K-702  
 
Printed in J apan ’02.02  
BB404/ BB405  
BB404  
REF NO.  
QTY RANK  
PART NO. DESCRIPTION  
OVERALL ASSEMBLY  
REMARKS  
BB404  
YNS  
WR  
A01 AAX33620 Neck Assembly  
A01 AAX33630 Neck Assembly  
A01 AAX33640 Neck Assembly  
*
*
*
BL  
A01b  
--  
Seal  
(QC67620)  
D01  
--  
Body  
E01 QC207000 Tuning Machine Assembly  
E02 QC236900 Tuning Machine Assembly  
E04 EA620040 Round Head Wood Screw  
E05 VB518600 String Guide  
E06 VJ382000 Spacer  
E07 03706370 Round Head Wood Screw  
E08 CB821460 Rod Cover  
E09 03706220 Oval Head Wood Screw  
E10 CB821090 Nut  
E11 AA819690 Neck Plate  
RM1243C (Chrome)  
RM1243CL (Chrome)  
2.4X10 FCM33G  
Chrome  
Black  
2.7X20 FCM33G  
Black  
2.1X10 FCM3BL  
Urea 40mm (Ivory)  
Chrome  
4.0X45 FNM33G  
Diecast (Chrome)  
3.0X25 FNM33G  
H4030  
2
2
4
09  
09  
01  
05  
01  
02  
03  
01  
07  
03  
01  
10  
04  
Chrome  
Chrome  
Black  
E12 EN240060 Oval Head Tapping Screw  
E18 QC347700 Bridge Assembly  
E19 EN230140 Oval Head Tapping Screw  
Nickel  
4
4
Nickel  
1set  
E21  
--  
Strings  
(QC35100)  
E25 BB801510 Strap Button  
E26 EN230140 Oval Head Tapping Screw  
E27 VB793700 Spacer  
E28 CB807760 Knob  
E31 CB809560 Back Cover  
E33 EB620020 Oval Head Wood Screw  
ST-type (Chrome)  
3.0X25 FNM33G  
Felt (Black)  
Black  
Electrical (Black)  
2.7X13 FCM3BL  
2
2
2
3
04  
04  
01  
03  
05  
03  
Nickel  
FRONT/REAR VOLUME, M.TONE  
Black  
4
2
F01  
--  
Electrical Unit  
(QC26630)  
FRONT VOLUME,REAR VOLUME  
MASTER TONE  
F01a HS120070 Variable Resistor  
F01b HS120100 Variable Resistor  
F01c UA154470 Mylar Capacitor  
15A 500K ohm  
05A 250K ohm  
0.047uF 50 J  
03  
03  
01  
F01d  
F01e  
F01f  
--  
--  
--  
Hexagonal Nut  
Flat Washer  
Toothed Lock Washer  
8S  
8S  
8S  
with Volume  
with Volume  
with Volume  
3
3
3
F12 QA209900 Jack  
Gold  
07  
F12a  
F12b  
F12c  
--  
--  
--  
Hexagonal Nut  
Toothed Lock Washer  
Rubber Ring  
G01 QC670100 Pickup Assembly  
G03 VJ388800 Pan Head Tapping Screw  
G04 CB815450 Pickup Cushion  
G06 QC670200 Pickup Assembly  
G08 VJ388800 Pan Head Tapping Screw  
G09 CB815450 Pickup Cushion  
S/C KPBO (Black)  
2.6X35 FCM3BL  
85X17X15  
S/C KPBO (Black)  
2.6X35 FCM3BL  
85X17X15  
FRONT  
Black  
*
*
4
4
02  
02  
REAR  
Black  
02  
02  
H01 QC354000 Accessory Unit  
QA262600 Cord  
G-1  
D
1set  
07  
05  
--  
--  
Wrench  
Wrench  
#1.5  
#5  
QC347700 Bridge Assembly  
B01 QC347900 Bridge Base  
B02 NX818300 Bridge Piece Assembly  
B03 NX818310 Bridge Piece Assembly  
Diecast (Chrome)  
Chrome  
1,2 (Chrome)  
3,4 (Chrome)  
10  
06  
05  
05  
1,2 Strings  
3,4 Strings  
2
2
: New Parts  
RANK: J apan only  
3
 
BB404/ BB405  
OVERALL ASSEMBLY  
A01b  
BB405  
A seal is attached  
on the rear of the neck.  
BB 405  
E01 E04  
E02 E04  
E05 E06  
Bridge Assem bly: Diecast (QC704900)  
E18  
B02  
E10  
E21  
E07  
E22  
B03  
F12 J ack Installation  
F12a  
A01  
F12c  
B01  
F12b  
F12  
E25  
E26  
E27  
D01  
E12  
E11  
E11  
E08  
E09  
G03  
E31 E33  
G01 G04  
E28 F01a F01d  
F01e F01f  
G08  
FRONT VOLUME: 15A 500KΩ  
G06 G09  
F01  
E19  
E18  
E28 F01a F01d  
F01e F01f  
REAR VOLUME: 15A 500KΩ  
F12 F12a F12b F12c  
E28 F01b F01c F01d  
E20  
E27  
E25  
F01e F01f  
E26  
MASTER TONE: 05A 250KΩ  
4
 
BB404/ BB405  
BB405  
REF NO.  
QTY RANK  
PART NO. DESCRIPTION  
OVERALL ASSEMBLY  
REMARKS  
BB405  
YNS  
WR  
A01 AAX33650 Neck Assembly  
A01 AAX33660 Neck Assembly  
A01 AAX33670 Neck Assembly  
*
*
*
BL  
A01b  
--  
Seal  
(QC67610)  
D01  
--  
Body  
E01 QC207000 Tuning Machine Assembly  
E02 QC236900 Tuning Machine Assembly  
E04 EA620040 Round Head Wood Screw  
E05 VB518600 String Guide  
E06 VJ382000 Spacer  
E07 03706370 Round Head Wood Screw  
E08 CB821460 Rod Cover  
E09 03706220 Oval Head Wood Screw  
E10 QC411200 Nut  
E11 AA819690 Neck Plate  
E12 EN240060 Oval Head Tapping Screw  
E18 QC704900 Bridge Assembly  
E19 QC706800 Oval Head Tapping Screw  
E20 VD762800 Oval Head Tapping Screw  
RM1243C (Chrome)  
RM1243CL (Chrome)  
2.4X10 FCM33G  
Chrome  
Black  
2.7X20 FCM33G  
Black  
2.1X10 FCM3BL  
Urea 43mm (Ivory)  
Chrome  
4.0X45 FNM33G  
Diecast FCM33G  
4.0X25 FCM33G  
4.0X40 FCM33G  
H4030  
H4055 Low-B  
ST-type (Chrome)  
3.0X25 FNM33G  
Felt (Black)  
3
2
5
2
2
2
09  
09  
01  
05  
01  
02  
03  
01  
Chrome  
Chrome  
Black  
*
03  
01  
Nickel  
4
Chrome  
Chrome  
Chrome  
*
*
6
2
01  
E21  
E22  
--  
--  
Strings  
Strings  
1set(4pcs)  
(AA80931)  
(QB00400)  
E25 BB801510 Strap Button  
E26 EN230140 Oval Head Tapping Screw  
E27 VB793700 Spacer  
E28 CB807760 Knob  
E31 CB809560 Back Cover  
E33 EB620020 Oval Head Wood Screw  
2
2
2
3
04  
04  
01  
03  
05  
03  
Nickel  
Black  
Electrical (Black)  
2.7X13 FCM3BL  
FRONT/REAR VOLUME, M.TONE  
Black  
4
F01  
--  
Electrical Unit  
(QC26630)  
FRONT VOLUME,REAR VOLUME  
MASTER TONE  
F01a HS120070 Variable Resistor  
F01b HS120100 Variable Resistor  
F01c UA154470 Mylar Capacitor  
15A 500K ohm  
05A 250K ohm  
0.047uF 50 J  
2
03  
03  
01  
F01d  
F01e  
F01f  
--  
--  
--  
Hexagonal Nut  
Flat Washer  
Toothed Lock Washer  
8S  
8S  
8S  
with Volume  
with Volume  
with Volume  
3
3
3
F12 QA209900 Jack  
Gold  
07  
F12a  
F12b  
F12c  
--  
--  
--  
Hexagonal Nut  
Toothed Lock Washer  
Rubber Ring  
G01 QC669900 Pickup Assembly  
G03 VJ388800 Pan Head Tapping Screw  
G04 CB815450 Pickup Cushion  
G06 QC670000 Pickup Assembly  
G08 VJ388800 Pan Head Tapping Screw  
G09 CB815450 Pickup Cushion  
S/C KPBO (Black)  
2.6X35 FCM3BL  
85X17X15  
S/C KPBO (Black)  
2.6X35 FCM3BL  
85X17X15  
FRONT  
Black  
*
*
4
4
02  
02  
REAR  
Black  
02  
02  
H01 QC354000 Accessory Unit  
QA262600 Cord  
G-1  
D
1set  
07  
05  
--  
Wrench  
#1.5  
--  
Wrench  
#5  
QC704900 Bridge Assembly  
B01 QC705100 Bridge Base  
B02 AAX33680 Bridge Piece Assembly  
B03 AAX33690 Bridge Piece Assembly  
Diecast FCM33G  
FCM33G (Chrome)  
1,2 (Chrome)  
Chrome  
*
*
*
*
1,2 Strings  
3,4,5 Strings  
2
3
3,4,5 (Chrome)  
: New Parts  
RANK: J apan only  
5
 
BB404/ BB405  
CIRCUIT DIAGRAM  
FRONT PICKUP  
FRONT VOLUME  
3
2
1
MASTER TONE  
OUTPUT  
1
2
3
REAR PICKUP  
REAR VOLUME  
3
2
1
BPJJ-03  
WIRING  
FRONT PICKUP  
REAR PICKUP  
Upper side: S (BB404)  
N (BB405)  
Upper side: N (BB404)  
S (BB405)  
to bridge ground  
BL  
GY  
GY  
BL  
BL  
MASTER TONE  
05A 250KΩ  
RE  
RE  
0.047uF  
FRONT VOLUME  
RE  
15A 500KΩ  
REAR VOLUME  
15A 500KΩ  
OUTPUT JACK  
6
 
   
BB404/ BB405  
SPECIFICATIONS  
STANDARD SP ECIFICA TIONS  
Scale Length .............................. 863.6mm  
Body-Neck Construction ......... Bolt On  
Length  
BB404....................................... 1141.0mm  
BB405....................................... 1159.5mm  
Width  
BB404...................................... 318.5mm  
BB405...................................... 324.5mm  
Net Weight  
BB404...................................... 3.9kg  
BB405...................................... 4.0kg  
COLOR  
Body  
YNS ......................................... Yellow Natural Satin  
WR ........................................... Wine Red  
BL ............................................ Black  
Neck  
YNS ......................................... Yellow Natural Satin  
WR ........................................... Wine Red  
BL ............................................ Black  
BODY  
Material...................................... Alder  
Body Depth ............................... 41mm  
FINGERBOARD  
Material...................................... Rosewood  
Fingerboard Width  
BB404...................................... 0-F 40.0mm, 12-F 56.4mm  
BB405...................................... 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  
P AR TS  
Hardware ................................... Chrome Plated  
Nut .............................................. Urea  
Bridge  
BB404...................................... Korea: Diecast (Chrome)  
BB405...................................... Taiwan: Diecast (Chrome)  
Strings  
BB404...................................... H4030  
BB405...................................... H4030 (4pcs)  
H4055 (Low-B)  
CONTROLS  
Volume ....................................... 15A 500KΩ x 2  
Tone ........................................... 05A 250KΩ x 1  
P ICKUP S  
Front/ Rear ................................ Single Coil  
Magnet  
Front/ Rear ............................. Ferrite  
7
 
 

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