Sylvania 6842PE Service Manual page 28

FLOW CHART NO. 2
Video signal is not outputted normally.
Input video signal.
Is the video signal outputted to each pins on the
CN701 of the Analog CBA?
(If the video signal is not outputted when signal
is inputted to component 1, 2 jack on the rear,
replace the Digital CBA.)
When inputting video signal to Video 1 S-VIDEO
jack...
CN701 Pin (10) VIDEO1-Y
CN701 Pin (12) VIDEO1-C
When inputting video signal to Video 1 composite
jack...
CN701 Pin (8) VIDEO1
When inputting video signal to Video 2 S-VIDEO
jack...
CN701 Pin (4) VIDEO2-Y
CN701 Pin (6) VIDEO2-C
When inputting video signal to Video 2 composite
jack...
CN701 Pin (2) VIDEO2
Are serial data signal outputted to TP2022 and
TP2023 on the Digital CBA?
Replace the Plasma Display Module.
FLOW CHART NO. 3
Audio is not outputted from speakers normally.
Input audio signal.
Is audio signal inputted to each pins on IC202
and IC203?
[****] is the check point on the componet side.
When inputting to Video 1 jack...
IC203 Pin (13) [J165] AUDIO1(L)
IC202 Pin (13) [J135] AUDIO1(R)
When inputting to Video 2 jack...
IC203 Pin (14) [J166] AUDIO2(L)
IC202 Pin (14) [J129] AUDIO2(R)
When inputting to component 1 jack...
IC203 Pin (15) [CN201 Pin (1)] AUDIO3(L)
IC202 Pin (15) [CN201 Pin (2)] AUDIO3(R)
When inputting to component 2 jack...
IC203 Pin (12) [CN201 Pin (4)] AUDIO4(L)
IC202 Pin (12) [CN201 Pin (5)] AUDIO4(R)
Yes
Yes
(continued to "A" on next page)
No
Check lines between Pins (10, 12) on CN701
and JK701, and service it if defective.
No
Check lines between Pin (8) on CN701 and
JK702, and service it if defective.
No Check lines between Pins (4, 6) on CN701 and
JK701, and service it if defective.
No
Check lines between Pin (2) on CN701 and
JK702, and service it if defective.
No
Replace the Digital CBA.
Check lines between Pin (13) on IC203 and
No
JK702, between Pin (13) on IC202 and JK702,
and service it if defective.
No
Check lines between Pin (14) on IC203 and
JK753, between Pin (14) on IC202 and JK754
and service it if defective.
No
Replace the Digital CBA.
No
Replace the Digital CBA.
1-7-2 L0604TR