Daewoo DSC-34W70N, Service Manual

Page: 18 / 59

Troubleshooting charts
- 17 -
No Sound
(NTSC Signal)
Check audio signal of IA1.
Video1 : L to #44, R to #46
Video2 : L to #2, R to #4
Video3 : L to #8, R to #10
AV Signal
RF Signal
Check the audio base-band signal to SIF of TU01.
Check audio signal of UC102.
-SIF to #67 -RF main L/R to #36, 37
Check audio signal of IA1.
-RF main L/R to #9, 11
-RF sub Mono to #25, 26
Check audio signal of IA1.
-Main L/R to #33, 32
-Sub L/R to #18, 16 (for the sub picture of PIP)
Check audio signal of UC102.
-Main L/R to #47, 48
(for RF and external audio 1,2,3)
-Sub L/R to #56, 57 (for Headphone L/R out)
Check DTV L/R of UC102.
-L/R to #53, 54
No Sound
(DTV Signal)
Check L/R out of UC102.
L/R/C to #28, and 27
Check C out of UC103
C to #34
Check SL/SR/Woofer out of UC102.
SL/SR/W to #25, 24, and 27
Check Headphone L/R out of UC102.
L/R to #34 and 33
Check the volume control of
headphone to IA4.
Check audio Amp (I601).
L/R/C In to #1, 2, and 4
L/R/C Out to #12, 11, and 8
Check DVDL/R of UC102.
-L/R to #50, 51
No Sound
(DVD Signal)
END
Check Headphone L/R out of IA03
L/R to #7 and 1