Marantz MM8077 Service Manual page 41

1
FAN & PROTECTION. PART
AMP C PCB
Q200
BN20-A
SRC1202M
BN20
CWB020250
R222
1.CURR AMP2
4.7K
2.DC AMP2
AMP B PCB
R223
BN10 15K
CWB020250
1.CURR AMP1
2.DC AMP1
CON3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
CN25
CN25
CJP15GA19ZY
TO BN20-C
FROM POWER PCB
GND POWER +
2 3
R229
4.7(1W)
P_CURR_FAIL
Q206
SRC1202M
Q207
SRC1202M
FAN1
Q205
SRC1202M
FAN2
P_AMP_FAIL HEAT_DET_P
Q201
Q208
SRA2207M
KSC1845FTA
Q202
SRC1202M
Q209
KSC1845FTA
3 2 1 3 2 1 3 2 1 3 2 1
CN54 CN53 CN52 CN51
A1
CJP03GA01ZY CJP03GA01ZY CJP03GA01ZY CJP03GA01ZY
FROM LM94022BIMG PCB TO 1A
POWER -
4 5
ST-BY PART
Q203
FROM
KTC3964
(HEAT SINK) CN22
CPU PCB
CJP02GA01ZY
5.P_DOWN
4.STANDBY2
FAN
M
3.STANDBY1
CFNRDH8025B1
2.+5VL
1.GND
CN34
CN34
CJP05GA01ZY
Q204
SRC1202M
CN28
R232 22K
CN28
CWB020B50-S
R231
2.PO100-1
10K
1.GND
R235 22K CN29
CWB020B50-S
R234
2.PO100-2
10K
1.GND
*OPTION
Only U Ver.
N, K Ver.
R311, R312 : Jumper
41
6 7
D303 1SS133M
IC30
S-80842CNY-B2-U
1 2 3
R300 D300
2.2K 1N4003SR
D301
1N4003SR
IC31
KIA78R05PI
D304 1N4003SR
VIN
2 1
R305 D305 1N4003SR
4
100K
3
D306 1N4003SR
D307 1N4003SR
D308 1N4003SR
D309 1N4003SR
D310 1N4003SR
D311 1N4003SR
Q300
KSA992FTA
Q301
SRC1202M
Q303
SRC1202M
Q302
KSA992FTA
D315
18V
Q304
SRC1202M
SCHEMATIC DIAGRAMS (2/8)
8
A
B
N,K Ver. AC250V T6.3AL
U Ver. AC250V 12A
*OPTION
F300
FROM
AC LINE
T301
F302
1.AC
L
N
2.AC
CN30
CJP02GA89ZY
C
FROM
RY30 MAIN TRANS
3 1
N
1.AC
4 2
L
2.AC
CN31
CJP02GA89ZY
RY31
1 4
2 3
D
E
F