Philips LD427SSX, Service Manual

Page: 45 / 148

9-7 FL9.5TR
Replace Digital Main CBA Unit or LCD Module
Assembly.
Is 5V voltage supplied to the Pin(2, 29, 33, 39, 44) of IC401?
Is 8.2V voltage supplied to the Pin(12) of IC401?
Replace IC401.
Check P-ON+5V, P-ON+8.2V line
and service it if defective.
Yes No
Yes
Yes
FLOW CHART NO.3
Picture does not appear normally. (EXT. input)
FLOW CHART NO.4
Picture does not appear normally. (Tuner input)
Are the video signals inputted to each pin of IC401? Check the line between video input terminal and
each pin of IC401.
Are the video signals outputted to each pin of IC401?
Yes
No
No
No
IC401 VIDEO-IN 1 3PIN
IC401 Y-IN 1 1PIN
IC401 CVBS/Y/S-Y-IN 38PIN
IC401 Pb-IN 36PIN
IC401 Pr/S-C-IN 34PIN
IC401 C-IN 1 9PIN
IC401 VIDEO-IN 2 7PIN
IC401 Y-IN 2 5PIN
IC401 C-IN 2 11PIN
IC401 COMPONENT-Y-IN 43PIN
IC401 COMPONENT-Pb-IN 47PIN
IC401 COMPONENT-Pr-IN
VIDEO-IN 1
Y-IN 1
C-IN 1
VIDEO-IN 2
Y-IN 2
C-IN 2
COMPONENT-Y-IN
COMPONENT-Pb-IN
COMPONENT-Pr-IN
52PIN
IC401 3PIN
IC401 1PIN
IC401 9PIN
IC401 7PIN
IC401 5PIN
IC401 11PIN
IC401 43PIN
IC401 47PIN
IC401 52PIN
→
JK703
→
JK702
→
JK702
→
JK707
→
JK706
→
JK706
→
JK717
→
JK718
→
JK719
Check the line between Pin(3, 4) of CN201 and
Pin(12, 13) of TU101, and service it if defective. Are the DIF signal inputted to Pin(3, 4) of CN201?
Replace Digital Main CBA Unit or LCD Module
Assembly.
Yes
FLOW CHART NO.5
Picture does not appear normally. (BD PB)
No
Reconnected the HDMI cable(CL3804). Are the HDMI cable(CL3804) connected properly?
Replace the BD Main CBA & BD Mechanism
Assembly or HDMI cable(CL3804).