9
TROUBLESHOOTING GUIDE
Appendix
1. NO POWER(CAUTION: DISCONNECT THE POWER PLUG WHEN REPLACE THE FUSE)
C830
D/Coil
PWC1
FUSE
L801
STR-F6656
Q703
Y801
FROM
FBT +12.5V
C804
TSM-5345B1
#2
#17
#15
#13
45.7V
TUNER B+ 33V
R823
2W 10K
C824
Check
F801(250V 4A)
Check
Voltage DC200~380V
Check
R802(10W 2.2ohms)
Check
Voltage
FROM MICOM #42
PWR ON : H
PWR OFF : L
Check
waveform
<DRAN OF I801>
ST-BY
PWR ON
MIC0M#41
Degaussing SW
#5
#9
#7
VIN
GND
Drain
Source
OCP/
FB
1
2
3
5
4
R803
1W
1K
R825
2W
0.1
C834
C807
D805
R805
D804
C808
I801
#11
TO I101#34
X-RAY
Q801
C833
D810
R810
132V
I802
Check
Voltage
R104
D814
D815
SOUND B+ 13.5V
ST-BY 11V
Check
Voltage
I803
R809
R833
R819
R806
Q806
R830
Q802
R827
Q803
Check
PWR ON:L
PWR OFF: H
T802
R831
2W 15K
D801
R802
R808
F801
SW707