Marantz SR7013 Service Manual page 99

6. SMPS
DC 5V is not output.
YES
Replace the [IC901 : TOP268EG
Is [IC901 : TOP268EG] damaged? and D9001 / D9002 / D9003 /
D9004].
NO
YES
Is the fuse [F9001] functioning Is [D9001 / D9002 / D9003 /
properly? D9004 / IC901] 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
99
A
B
After primary side rectification Primary drain
(Caution: High voltage, electric shock) After secondary rectifications
(Caution: High voltage, electric shock)
C9002
OPTION OPTION
0.01uF/250V
J9008
1N4007 D 9001
C3A206
1N4007 D 9002
1N4007
D 9003
1N4007 D 9004
1N4007 D 9005
1N4007 D 9006
C9003
0.01uF/250V
HEATSINK
CMY6A025
(15*17*30) D 9008 ZD 918 UF4004
1N4007 Z33V D 9009
OPEN
IC901
T OP268EG
D 9014
D F S C X V
7 5 4 3 2 1
J9009
C3A206
J9005
Q9001
C3A206
2N7002KA
IC905
EL817B
J9010
C3A206
A B
A B
C
HEATSINK
CMY3A238
C9013
(16.5*16*30)
1000p/50V(3216)
R9013
22(3216)
D 9012
1
2
3
T 9001 CVD FMW -4306
12
1
J9001
2 11
OPEN
3 10
4 9
5 8
6 7
IC902
EL817B
IC903
C9029
C9028 0.1uF(1608) K IA2431AP
2200pF/250V
J9012
R9030
C3A206
OPEN(1608)
C9031
J9011
OPEN
C9030 OPEN(1608) C3A206
J9002
BK903
C3A206
C
C