Marantz SR5014 Service Manual page 89

6. SMPS
DC 5V is not output.
YES
Replace the [U4140 : TOP268VG
Is [U4140 : TOP268VG] dam-
and D4142 / D4143 / D4144 /
aged?
D4145].
NO
YES
Is the fuse [F4140] functioning Is [D4142 / D4143 / D4144 /
properly? D4145 / IC4140] damaged?
NO
YES
Are there any short circuits
Repair the short circuited area
caused by the soldering on the
on the PCB.
PCB?
NO
YES
Are any parts damaged? Check the damaged parts.
Operation waveform for each part
YES
Replace the damaged part.
YES
Replace the damaged part.
SMPS unit
(Unloaded)
Set
89
A
After primary side rectification
(Caution: High voltage, electric shock) (Caution: High voltage, electric shock)
C4148 0.01UF/250V
OPTION
OPTION
D4142 1N4007S
ZD4147
D4143 1N4007S
ZJ39B
ZD4148
D4144 1N4007S
ZJ39B
ZD4149
D4145 1N4007S
ZJ39B
C4149 0.01UF/250V
ZD4151
ZD4165
P6KE150A
ZJ15B
R4141
1M
R4142
1M
R4164
47PF/1KV-3216
1M
D4146 ZD4150
ZD4164
1N4007S ZJ27B
ZJ12B
R4147
270K
ZD4158
ZD4162 OPTION
ZJ39B
ZJ12B
TR4140 ZD4163
INK0010AC1
ZJ12B
R4151 R4153
1 2 3 4 6
OPTION
ZD4160
11K 6R8
ZJ7.5B
U4140
TOP268VG
OPTION
OPTION
12 11 10 9 8 7 R4152
C4152
10K
R4145 47/25(NXA)
1M
A B
A B
B
Primary drain
C
After secondary rectifications
D4149
MBR3060PT
1 3
R4165 2
33(1)
C4169
10N-100V(PEF)
C4153
T4140
1000PF/1KV-3216
EE2525
R4154 6
9
10
5
C4171 D4147
10
AP01C-V1
4
3
12
D4148
UF4004
2 13
C4155
10/50(NXA)
C4156 2200PF/400V
C4160 1U-K
C4167 OPEN
C4154 BKT4143
M3
100N-K
RLY4140
JZC-36FD
D4150
1N4148
C4157
OPEN
R4156
TR4142 4K7
KTC3198G
R4155
10K
C
C
U4143
KIA2431AP