Service manual SP-110
NO Sound
Check start
N
Does the screen appear? 1. Confirm AC connection
2. Confirm power S/W on
3. Inspect video PCB and other blocks
Y
N
is the sound signal input jack 1.Make sure of connection of jack(PDP monitor & A/V device)
correctly connected?
Y
N
is the speaker properly connected?Connect speaker
Y See: Siganl composition of P502 sound
1. RSPC, LSPC => PC sound
N
2. RSD1, LSD1 => DTV/DVD sound
1. Jack PCB is N.G
Is sound signal output from P502?
2. Video connection to 3. RSV1, LSV1 => VIDEO, S-VHS sound
Y
jack PCB is N.G
N
is sound signal on P400 No.2,31. Sound S/W is N.G
of audio PCB?2. Confirm IC404
3. Change video PCB
Y
N
is sound signal on PA400 No.2,4 1. PA400 connector is N.G
of audio PCB? 2. Change audio PCB
Y
NN
is sound AMP on PA300 No.1,4 of Is power fed to PA3 of 1. Confirm if PA3 connector is N.G
audio PCB processing an output? audio PCB? 2. Change power board
YY
Does sound AMP on PA300 No.1,4 andN 1. PA300 is N.G (Change audio PCB)
JP659 of audio PCB produce an output?or JP659 is N.G (Change jack PCB)
Y
1. Speaker or sound cable is N.G
2. Change speaker or sound cable
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ACEC
DAEWOO
