Philips HTS3051B/F7, Service Manual

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1-8-1 E1S00TR
TROUBLESHOOTING
FLOW CHART NO.1
The power cannot be turned on.
Is the fuse normal?
Is normal state restored when once unplugged
power cord is plugged again after several seconds.
Is 5.4V voltage outputted to the cathode of D9024?
Are the voltage of each pin of CN9001 become
as shown below?
See FLOW CHART No.2 <The fuse blows out.>
Check for lead or short-circuiting of primary
circuit component and replace AMP/PSU CBA
if defective.
(Q9000, T9000, BD9000)
Replace AMP/PSU CBA.
Yes
Yes
Yes
No
No
No
No
Check each rectifying circuit of secondary circuit
and replace BD Main CBA & BD MECHANISM
ASSEMBLY if defective.
Yes
FLOW CHART NO.2
The fuse blows out.
After servicing, replace the fuse (F9000).
Check the presence that the primary component
is leaking or shorted and replace AMP/PSU CBA
if defective. Check the presence that the rectifying diode or circuit
is shorted in each rectifying circuit of secondary side
and replace AMP/PSU CBA if defective.
CN9001
CN9001
CN9001
CN9001
CN9001
CN9001 +1.8V
+5V
+1.2V
+10.5V
+3.3V
+5V
1V8
5V-1, U5V
1V2
10V5
3V3
5V-2 1-3PIN
4,6PIN
9,13PIN
10PIN
19,20PIN
22PIN
FLOW CHART NO.3
Picture does not appear normally.
Set the disc on the disc tray, and playback.
Yes
Are the video signals outputted to each pin of
CN404?
Replace BD Main CBA & BD MECHANISM
ASSEMBLY.
Replace AV CBA.
Yes
No
CN404 Component Y OUT 25PIN
CN404 Component Cb OUT 27PIN
CN404 Component Cr OUT 29PIN
CN404 CVBS OUT 23PIN