Smps; Operation Waveform For Each Part - Denon AVR-X6400H Service Manual

6. SMPS

DC 5V is not output.
YES
Is [U6503 : TOP267EG] dam- Replace the [U6503 :
aged? TOP267EG] and [D6503].
NO
YES
Is the fuse [F70] functioning Is [U6503(TPO267EG), D6503,
properly? C6506] damaged?
NO
YES
Are there any short circuits
Repair the short circuited area
caused by the soldering on
on the PCB.
the 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.
95
A
After primary side rectification
(Caution: High voltage, electric shock) (Caution: High voltage, electric shock)
C6512 0.01/250V
R6511
2.2M
(2.2M)
3
1
Europe/China=OPEN
D6503 R6512
D3SB60 2.2M
(2.2M)
C6511 0.01/250V
Z6503
HEATSINK
44741010600AS
D6526
1SR154
D6510
UDZSTE-1730B
U6503
R6514
TOP267EG
56K
7 1
D V
C 3
S
X F
5 4
2
R6516
6.8
C6515
47/25
D6507
UDZS6.8B
Q6501
RK7002B
R6534
D
1 OPEN
G
2 3
S
SMPS unit
A
(Unloaded)
A
Set
B
Primary drain
After secondary rectifications
R6513
OPEN
Z6516
R6550 C6536 C6532 3X10_CBTS(S)-Z
22 4700P 4700P Z6515
2 1
HEAT_SINK(SMPS)-A
T6501 UNFIX110157Z1
SW_TRANS(STR28L-278)
1
10
D6515
KCQ60A06
11
3
D6527 1N4003
6
D6514
8 7
1N4003
5
C6519
22/50
4
R6523
U6501 3.3K
PC123-Y-22
(2/2)
(1/2)
U6501
PC123-Y-22
C6520
3300P/250V
C6522 OPEN
R6518 OPEN
J6501 SHORT
C6521 R6531
OPEN OPEN
U6504
PC123-Y-22
FG1
B C
B C
C