Daewoo DHC-X100 Series User Manual

5. Trouble Shooting Guide
11
Push power on.
Check +5.0V line.
Check if IC750
Pin72 is High?
Check Power down line.
Check if IC750
Pin24 is High ?
Replace IC750
Yes
No
No
Yes
Check if IC750
Pin25 is High ?
Yes
Check Protection Circuit.
No
Replace XC750.
Check Oscillator
of XC750.
Check DVD Reset control.
Check if IC400
Pin3 is work?
Yes
No
No
Yes
Check if Connector
CN703 are work?
Check from Micom
to DVD interface.
No
Refer to Power
Supply Circuit.
Check power
supply circuit of
regulator PCB.
Check loader.
Check MPEG PCB.
No
Yes
Check Power.
Yes
Check Power Supply Circuit.
No
Yes
Does DVD appear
at VFD ?
Does loading appear
at VFD ?
Check if DVD an Audio
Micom interface is OK.
Yes
No
Yes
Does no DISC or
time appear at VFD ?
Yes
No
Check MPEG PCB.
Check connector
CW701 if it normaly?
Yes
No
No
Recheck It.
Insert AC Power Cord.
Mi-Com Circuit
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Daewoo DHC-X100 Series Specifications

General

Brand	Daewoo
Model	DHC-X100 Series
Category	Home Theater System
Language	English