NO PICTURE/NO SOUND
(RASTER OK)
Yes
Yes
NO
OK
OK
NO
NG
Check the voltage 5V,
33V of TU101
Does the Auto programs
operation?
Check I
2
C BUS lines
(SDA, SCL)
Is the CVBS signal of
pin13 of IC501 normal?
Go to NO PICTURE
Block.
NO SOUND Blcok.
Check/Replace ZD102,
5V, 33V power lines
Check/Replace IC501
NO RASTER
(SOUND OK)
Normal
Normal
Abnormal
Normal
Abnormal
Abnormal
Check the Heater pulse of
HT of T406
Check the voltage of HT
of CPT Board
Check/Replace
Connector, FR915
Check the voltage of HV,
G2 of CPT
Check/Replace P901A,
P901B, ZD904, IC901,
D902~904, P901
Check/Replace T406
Check/Replace T406
Check/Replace TU101
