Samsung DV535, DV532, DV750, DV550 Troubleshooting

33

O

Check for C-Sync Signal

at VOR10

X

O

Check for waveform at

pin10 of VIC3

(Freg: 13.5MHz)

X

Check VIC3
or Replace

O

Check if waveform at pin 5,7.9

of VIC101 is varying when

playing VCD disc

X

Check VIC101 or
Replace

O

Check for video signal at

pin20 of VIC4

X

Check VIC4 or
Replace VIC4

O

Check for video signal at

pin7 of VIC5

X

Check VIC5
or Replace

O

Check VQ4,5

AND VCE23,24

X

Replace

Check Pattern or
SMD Type parts.

A

7. Troubleshooting (Option-DV-532KV)

• Check all connection between VCD PCB and Main PCB

• Check all supply voltage (+8V, -8V, +5V, +3.3V)

1. No Video

2. No Sound

!!

Digital Sound (VCD1.1, VCD2.0, CD, LD Digital)

34

O

Check for 16 MHz Clock waveform

at pin4 of VIC105

Check VCW2

O

Check for voltage at pin27 of

VIC105 is OV when power

is turned on

O

Check for signal at pin1,2,3

of VIC105

O

Check for audio signal at

pin13,16 of VIC105

B

Check VCW2

See “No Video”

Replace