Daewoo DSC-30W60N Service Manual page 44

Loss of H/V sync to DTV RF
Picture is scrolling due to horizontal or vertical sync loses.
Check H/V sync signal of Video decoder to PW06V.
Check 27MHz clock to pin 88 of IC901(Video decoder),
and Y/Pb/Pr to pin 93 ~ 125.
Check H/V sync.
YES
To H/V Sync Check
(RF DTV, RF NTSC, AV NTSC)
No sound to DTV RF
(Audio L, R)
Check audio L/R to pins 2, 4 of PW05V
YES
Decoder
L, R
END
NO
If no signal, change IC901.
NO
YES
Check pins 188, 190, and 197 of IC701 (Transport IC).
43
END
Check pins 21, 22 of IC920 (Codec IC).
NO
Check pins 63, 64, 67, and 73 of IC912.
NO
NO
If no signal, change IC701.
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