Smps; Operation Waveform For Each Part; Dc 5V Is Not Output - Denon AVR-S730H Service Manual

6. SMPS

DC 5V is not output.

YES
Replace the [IC601 : TOP268VG
Is [IC601 : TOP268VG] damaged? and D6001/ D6002 / D6003 /
D6004].
NO
YES
Is the fuse [F6001] functioning Is [D6001/ D6002 / D6003 /
properly? D6004] 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
74
A
After primary side rectification
(Caution: High voltage, electric shock) (Caution: High voltage, electric shock)
*OPTION
C6002 250V/0.01uF
*OPTION
D6001 1N4007
D6002 1N4007
D6003 1N4007
D6004 1N4007
D6005 1N4007
D6006 1N4007
J6002 J6003
JUMPER JUMPER
C6003
250V/0.01uF
*OPTION
D6007 ZD618
1N4007 Z27V
ZD601
Z12V
*OPTION
6 4 3 2 1
D F C X V
Q6002 IC601
ZD621
2N7002KA CVITOP268VG
S S S S S S
Z7.5V
7
D 8 9 10 11 12
G
S
A B
A B
B
Primary drain
C
After secondary rectifications
R6034 C6027
OPEN OPEN
1
2
3
T6001
VLT9Z132ZW
D6013
RBQ30T65A
14
1
J6001
2 13
OPEN
3 12
4 11
5 10
D6008
6 9
R6018
1N4007
5.6K(0.2W)
7 8
D6010
IC603
3
IC602
C6023 C6024 0.1uF(1608)
400V/2200pF
R6026
OPEN(1608)
BK603 C6025 OPEN(1608)
CMD1A629
BRACKET
C
C