Philips 40PFL3705D/F7 Service Manual page 33

FLOW CHART NO.3
Picture does not appear normally. (EXT. input)
Are the video signals inputted to each pin of IC2701?
IC2701 3PIN VIDEO-IN 1
IC2701 1PIN Y-IN 1
IC2701 9PIN C-IN 1
IC2701 7PIN VIDEO-IN 2
IC2701 5PIN Y-IN 2
IC2701 11PIN C-IN 2
IC2701 41PIN COMPONENT-Y-IN
IC2701 45PIN COMPONENT-Pb-IN
IC2701 50PIN COMPONENT-Pr-IN
Are the video signals outputted to each pin of IC2701?
IC2701 38PIN CVBS/Y/S-Y-OUT
IC2701 36PIN Pb-OUT
IC2701 34PIN Pr/S-C-OUT
Replace Digital Main CBA Unit, FRC CBA Unit or LCD
Module Assembly.
FLOW CHART NO.4
Picture does not appear normally. (Tuner input)
No
Yes
No
Yes
No
Yes
Check the line between video input terminal and
each pin of IC2701.
→ JK2703
IC2701 3PIN
→ JK2702
IC2701 1PIN
→ JK2702
IC2701 9PIN
→ JK2707
IC2701 7PIN
→ JK2706
IC2701 5PIN
→ JK2706
IC2701 11PIN
→ JK2714
IC2701 41PIN
→ JK2715
IC2701 45PIN
→ JK2716
IC2701 50PIN
Is 5V voltage supplied to the Pin(2, 29, 33, 39, 44) of IC2701?
Is 8V voltage supplied to the Pin(12) of IC2701?
Yes
Replace IC2701.
8-5
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
No
PL10.5TR