Read Sony SLV-D990PB / SLV-D990PE / SLV-D990PR / SLV-D995PE Service Manual online
7-15
No Tray open/close
DIC1-80 is Open ; "L" ?
Close ; "H" ? DIC1-77 is Open : "H"?
Close : "L"?
Check DRIC1-14, 15
output at
OPEN
/CLOSE
Check signal line state from
DRIC1-14, 15 to tray motor.
Check DIC1 perpheral circuit.
Check DRIC1 perpheral circuit
and DCON1 connector.
Yes
Yes
No
No
(OPEN Waveform)
(DVD Section)
CD/VCD/DVD L/R output error
(Mixed Audio output)
Normal
ADOUT
is
input in AIC2-2?
CHECK
AIC2-7, 8pin output is
normal?
Check PCB peripheral
Pattern shot.
Check DIC1-172 output.
Check DIC1-166
(CD/VCD ; 16.9344MHz,
DVD ; 18.432MHz)
Yes
Yes
No
No
AIC4-1, 7 output
is normal?
Check AIC4 peripheral circuit.
Yes
No
Base terminal level
of AQ3, AQ6
are "L"?
Check VCR-MICOM mute
Yes
No
(ADOUT Waveform)
(Vout Waveform)
(DVD Section)
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