Main Pcb Assy - Fender BASSBREAKER 15 Combo Service Manual

8 7
+158VDC
TP13
272mVAC
B+4_TPCB
TP23
WJ30
GRN
INPUT PCB
C2 - CHECK V RATING
R68
C56 S5-A
TUBE PCB INPUT_GAIN
5mVAC 100k .0022
1W 400V
TP22
OUTPUT_V1A C69
coax
INPUT_V1A
INPUT PCB 1 470pF
P17 P31
INST_IN R85
2 V5-A R115
47k
P30 P18 12AX7A R116
J6 10k
4.7M
INPUT
3 R66 R118
D 2.2M 2.2M
R112 CW
R91
2.2M coax
R97
2.2M C65 R123
1.5k
2.2 250k15A
TO WJ21 GAIN
W3
WJ37
BLK
GNDA_2 GNDA_2 GNDA_2 GNDA_3 GNDA_3
GNDA_1
87mVAC
R25
TP31
10k
R24
C8 R10
10k
6 U1-B
R22 10k
7 22
1M TL072
5
2 U1-A
R19
1 1k
C4 R7
R23 TL072
3 R14 220pF
1k
10k
5%
10k
R26
10k
C
REAR PANEL PCB
POWER SUPPLY PCB - UNDER REVERB CARD
C48
22pF
5% 6mVAC
R55 R57
TP35
15k 1k
C40 R53
2 U8-A P5 5.1k
C33 2.2
1 REVERB_SEND
TL072
3
22
C51
R52
R56 R54
100k 100k
5.1k
2.2
R60 R62
+5V
15k 1k
C52
22pF
5%
AT P5: REVERB CARD - P/N 0096569000
B
13. MAXIMUM OUTPUT TEST CONDITIONS:
ENERGIZE PRODUCT WITH NOMINAL LINE VOLTAGE & FREQUENCY AS DENOTED ON THE PRODUCT'S BACK PANEL
POWER SWITCH & MUTE SWITCH POSITIONED UP (POWER INDICATOR IS LIT CONSTANTLY, NOT FLASHING).
8 OHM RESISTIVE LOAD CONNECTED AT MAIN SPEAKER OUT (J1)
IMPEDANCE SELECTOR (S2 - BACK PANEL) SET TO 8 OHMS
A
PANEL CONTROL SETTINGS:
TREBLE AT 12:00
BRIGHT SWITCH OUT
ALL OTHER CONTROLS INCLUDING GAIN: FULLY CLOCKWISE (MAX) EXCEPT REVERB (MIN)
AT TP30 (J1), OBSERVE CLIPPED OUTPUT OF 15W +/- 20% FOR THE FOLLOWING 1kHz INPUT SIGNAL LEVELS (J6) AT THE
THE 3 GAIN STRUCTURE SETTINGS (S1) BELOW:
GAIN STRUCTURE = LOW: INPUT = 15 mVrms
GAIN STRUCTURE = MED: INPUT = 3 mVrms
GAIN STRUCTURE = HIGH: INPUT = 0.3 mVrms
8 7
6
+186VDC
TP14
B+4_TPCB
1.33VAC
TP24
OUTPUT_GAIN
GAIN CONTROL PCB
R107
100k
V1B_TO_S2A
GAIN STRUCTURE
TUBE PCB 1W
C67
R104 V1B_OUT 3
BRIGHT
H
110k
S5-B 6 .0022 A
coax 2
INPUT_V1B 400V P43 M
P24
R84
7 V5-B
coax
L
12AX7A
10k 1
P32 P16
C68 S1-A
R4
R103
8 .001
130k
130k
400V
R83
3.3M R82
C58
2.2k
2.2
R117
3.3M
GNDA_GS1
GNDA_3 GNDA_4 GNDA_4 GNDA_4 GNDA_4
V1A_TO_S2
P33 P42
R5
3.3M
GNDA_GS2
R15
1k
R16
1k
C11
J3 J4
22
FX SEND FX RETURN
1
R11
C5
R130 220k
220pF
10k C1
5%
R27
220pF R8
220k
2 5% 100k C2
220pF
5%
GNDCH_RP GNDCH_RP
P1 P36
11
25mVAC 25mVAC P38
R50
TP37 TP38
C70
22k
C29
22pF
22pF R113
5%
5%
4.7k
6 U8-B
R114
7 2
TL072
5 1
4.7k TL072
3
U9-A
2mVAC
REVERB 6 U9-B
TP36 CW
25kB 7
TL072
C77 R128 5
R51
220k
22pF
5%
R119 R120
47 47
CONTROL PANEL
12. TEST POINT 39 - MUTE SWITCH SET TO DOWN POSITION TO PRODUCE A FLASHING POWER INDICATOR
11. TEST POINT 38 (REVERB LEVEL) - REVERB CONTROL (R128) SET FULLY CLOCKWISE (MAX) FOR THIS TEST ONLY.
10. FILAMENT VOLTAGE TEST (TEST POINT 5) - NO AC INPUT TO J6; MEASURED ACROSS FILAMENT SECONDARY.
9. ALL AC VOLTAGE TESTS (TEST POINT DENOTED BY CIRCLE AROUND TEST DATA) - INJECT 5mV AC INPUT AT 1kHz TO J6
8. ALL DC VOLTAGE TESTS (TEST POINT DENOTED BY SQUARE BOX AROUND TEST DATA) - NO AC INPUT TO J6
7. ALL VOLTAGES MEASURED WITH RESPECT TO CHASSIS GROUND USING
A DVM WITH AT LEAST 1MEG AC INPUT IMPEDANCE & 10MEG DC INPUT
IMPEDANCE. VOLTAGES MAY VARY +/- 20%.
NOMINAL TEST CONDITIONS:
ENERGIZE PRODUCT WITH NOMINAL LINE VOLTAGE & FREQUENCY AS DENOTED ON THE PRODUCT'S BACK PANEL
POWER SWITCH & MUTE SWITCH POSITIONED UP (POWER INDICATOR IS LIT CONSTANTLY, NOT FLASHING).
8 OHM RESISTIVE LOAD CONNECTED AT MAIN SPEAKER OUT (J1)
IMPEDANCE SELECTOR (S2 - BACK PANEL) SET TO 8 OHMS
PANEL CONTROL SETTINGS:
GAIN AT 12:00
BRIGHT SWITCH OUT
STRUCTURE CONTROL SWITCH SETTING: LOW
ALL OTHER CONTROLS FULLY CLOCKWISE (MAX) EXCEPT REVERB (MIN)
6
5 4
+154VDC
TP15
B+4_TPCB
0.87VAC
TP25
R65
100k
C8 - CHECK V RATING
GAIN CONTROL PCB
1W
C55 R69
OUTPUT_V2A GAIN STRUCTURE
TUBE PCB
9
1 .01 470k H
400V
13 coax
C54 S2B_IN
INPUT_V2A R74 2 M
8
P15 P39
L
100k 470pF
V4-A
S2A_OUT P19
coax 3 12AX7A 7
P41
R2
R75 R73
C81
470k
270k 68k
470pF
R98
C66
R3
1.2k
47
510k
R129
270k
GNDA_GS4
GNDA_6 GNDA_6
GNDA_GS3
GNDA_6
C19
89mVAC
TP32
C15
22pF
5% R28
22pF
R20
5%
270k R36
10k
10k
R29 U2-A
3
GNDA_RP R33 R37
6 U2-B 3
1
D S
22k TL072 7
2
10k TL072 10k
5 2
Q1
J113 GNDA_RP
R34
R31 R30
G R21
R39
100k
10k
22k 270k
D1 10k
C20
+15.6V_RP R40
22pF
WJ2 10k
R32 5%
WHT
47 TO 1/2 MUTE SWITCH C3
GNDA_RP .01
WJ3
-15.6V_RP
R9 5%
BLK
1M
P45 P28
4.7M
R6
P11 P44
GNDA_RP
P47
+15.6V_RP
WJ15
RED
R48
POWER ON/ R49 U4
750k
10k LM555
MUTE FLASHER GNDA_RP
1 8
GND VCC
WJ17 2 7
C79
RED TRIG DISCHRG
47 C13 3 6
OUTPUT THRESH
4 5
.1
WJ16 RESET VCONTROL
R47
BLK
1.5M
C28
GNDA_RP
.01
TO 1/2 MUTE SWITCH 5%
R46
WJ13
GNDA_RP
BLACK
4.7k
C78
47
6.5VAC
12
TP39
GNDA_RP
REAR PANEL PCB
5 4
3
+157VDC
TP16
B+4_TPCB
1.14VAC
TP26
R108
CONTROL PCB
100k
TUBE PCB
OUTPUT_V2B
1W C64
TONE_IN C75
INPUT_V2B .022
13 6
400V 470pF
S2B_OUT R96 coax
C coax 7 V4-B CW
R122
P40 P20 12AX7A R121
68k P34
R126
47k 270k
250k30A
8 P26
TREBLE
S1-B
R95 C74
R1
470k 470k
R94
C62 .047
1.2k
47 R105
400V
CW
1M
R124
1M5A
GNDA_GS5 GNDA_8 GNDA_8 BASS
C73
.022
CW
400V
R125
25k10A
MID
GNDA_9
88mVAC
TP33
S3-A
C23
S3-B
CAB EMULATION
R133
22pF
R35
5% 100
R41
GNDCH_RP
3.3k C10
10k R17
C14
6 U3-B
.01
U3-A 7
22k
.22 C16 R44 R43 TL072 22
1 5
TL072
C12 .22 4.7k 27k
C25
C24 R13
R42 R45 R12
.001 100k
20k 100k 1k
22pF
5%
R38
10k
R132
100 +297VDC
TP40
add catch diodes to primary!!
1.06VAC 0.98VAC
TUBE PCB B+3_TPCB
P25
TP28 TP29
WJ28
WJ31 +199VDC +203VDC B+2_TPCB
ORG
YEL
TP17 TP18
R80
7
V1-A
Fr270 B+1_TPCB
EL84
C53 R99 9 2W
2
D13
8.2k
R67 .022
R72 1N5366B 39V5%
100k 100k 400V 3 WJ29
1W BLK
1W R100 +10.2VDC 47 C60
C61
220k
TP20
.1 C57 R134
V3-A V3-B 1 2
400V
+10.3VDC 240 5W
1 6
.022
D12
TP21
400V
R86
2 7
GNDA_PA 1N5366B
39V5% WJ32
10k
R90
220k
3 8
12AX7A 3 240 5W
12AX7A
R89 R70
R87 R93
1M 1M 47
2 C83
8.2k 9
EL84
C59 GNDA_PA
.1 V2-A 7
R88 R77
.047
250V
820
Fr270
C63 2W
R106 R102
WJ33
GRY
10k 18k
+66VDC
R92 R101
TP19
WJ34
47k 300
BLK
+297VDC
TP41
GNDA_PA GNDA_PA
6. FOR COMBO: P109 & P110 INSTALLED; JMP1 NOT INSTALLED
FOR HEAD: P109 & P110 NOT INSTALLED; JMP1 INSTALLED
5. THIS SCHEMATIC IS FOR PCB FABRICATION P/N 7706200000 AND
PCB ASSEMBLY P/N'S 7706169000 (COMBO) & 7708263000 (HEAD).
4. ALL DIODES ARE 1N4448.
3. ALL POLARIZED CAPACITORS IN uF, 20%; 50V MINIMUM.
2. ALL UNPOLARIZED CAPACITORS IN uF, 10% OR BETTER; 50V MINIMUM.
(POWER SUPPLY BYPASS CAPACITORS ARE 20%).
1. ALL RESISTORS IN OHMS, 5%; 1/4W.
NOTES:
(UNLESS OTHERWISE NOTED)
3
2 1
R E V I S I O N S
REV. DESCRIPTION DATE APPROVED
A PR3034
06-NOV-15 S M M
87mVAC
B EC 16-0015 31-MAR-16 S M M
TP27
C76
.0068 CW P35 P48
R127
250k15A
R111 MASTER
100k
GNDA_9 GNDA_9
4mVAC
TP34
J5
LINE OUT
GND LIFT
2
3
1
S4-A
S4-B C7 C6
R18 R131
220pF
1k 22k 220pF
C9
5%
5%
5% .01
GNDCH_LOUT
IMPEDANCE SWITCH PCB
BLU
SPEAKER PCB
P100 GRY
T
TB J2
YLW P101
RB EXTENSION SPEAKER
4 S2-B R
16
S
1.98VAC
8 P105 P107
GRN P102 3 TP30
WHT WHT
7 + J1
8 2
MAIN SPEAKER
P27 GRN/YLW P103 6
RED 1
6
S2-A 5
4
P109
JMP1 GNDCH_SPKR
WHT
-
RED
P104 P106 P108
BLK
BLK BLK
P110
BLK
+
P23
BRN -
FEEDBACK
control pcb - REVERB
+15.6V_RVB
R110 R71 C72
47 47
.1
GNDA_2 GNDA_4
GNDA_1 GNDA_3
8
R109 U9-C
R76
WJ35
47 BLK
47 4 C71
GNDA_4 GNDA_6
GNDA_3
R81 .1
WJ36
BLK
47 GNDA_REV
-15.6V_RVB
GNDA_6 GNDA_8
GNDA_9
+15.6V +15.6V_RP
C39
C17 C22 C26
.1 .1 .1 .1
8 8 8
U8-C 8
U1-C U2-C U3-C
4 4
C38 4 4
C18 C21 C27
.1
.1 .1 .1
GNDA_RP GNDA_RP GNDA_RP
rear panel pcb
-15.6V -15.6V_RP
THIS DOCUMENT CONTAINS INFORMATION OF R
A PROPRIETARY NATURE TO FENDER MUSICAL
MUSICAL INSTRUMENTS
INSTRUMENTS AND IS SUBMITTED TO YOU IN
CONFIDENCE AND SHALL NOT BE DISCLOSED OR
Corona, CA U.S.A.
TRANSMITTED TO OTHERS WITHOUT AUTHORIZ-
ATION FROM FENDER MUSICAL INSTRUMENTS.
CHECKED BY: TITLE: SERVICE DIAGRAM, COMBINED (schematic)
BASSBREAKER 15
DATE:

MAIN PCB ASSY

APPROVED BY:
SIZE DRAWING NUMBER REV.
DATE:
D 7706210000 B
DRAWN: GIT'LO ENGR: GIT'LO
DATABASE FILE: Z3034S.SCH RELEASE DATE: 06-NOV-15 SHEET: 1 OF 3
2 1
D
C
B
A