Daewoo DSC-30W60N, Service Manual, Page: 26 / 73

25
Troubleshooting charts
No sound (External HD)
Check the following audio signals.
SL input / output : pins 12, 6 of I603
SR input / output : pins 16, 2 of I603
C input /output : pins 9, 7 of I602
W input /output : pins 9, 7 of I603
Check if R, L signals are input and output to IC215.
HD_L input : pin 53 HD_L output : pin 37
HD_R input : pin 54, HD_R output : pin 36
Check the input /output signal of volume control IC.
SL input / output : pins 6, 7 of I606
SR input / output : pins 4, 3 of I606
Center input / output : pins 6, 7 of I605
Woofer input / output : pins 4, 3 of I605
SL, SL, Center, and Woofer R, L
YES
Decoder
R, L
A1
END
Check I603
and I602.
NO
NO YES
Check IC215.
Check the input /output signal of audio amplifier IC.
SL input / output : pins 4, 8 of I608
SR input / output : pins 1, 11 of I608
Center input / output : pins 1, 11 of I607
Woofer input / output : pins 2, 12 of I608
YES
END
A2