Electrical Troubleshooting Guide; System Part; Disc Recognition Unavailable - Zenith DVR313 Series Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

1. System Part.

No logo appears
at Power on
IC2075 -11 :HIGH?
(/E5_RST )
YES
X102 :Clock vibration ?
(13.5 MHz )
YES
Check
IC1066 -8 signal in Reset mode?
(/FCS0 )
YES
Check IC2080 signal flow.

2. Disc recognition unavailable

DRIVE at power
supply?
YES
Check IC2080 signal flow
NO Check IC2075 power supply
and ambient circuits.
NO
Replace X102.
Check IC2066 power supply
NO
and ambient circuits.
NO
Checks SMPS.
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