5. Trouble Shooting Guide
11
Push power on.
Check Power down line.
Check if IC750
Pin24 is High ?
Replace IC750
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 Loader 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 Loader PCB.
Check connector
CW620, CN907
if it normaly?
Yes
No
No
Recheck It.
Insert AC Power Cord.
Basic Operating
Mi-Com Circuit
5. Trouble Shooting Guide
Check Loader Power
Supply circuit.
Check Connection CN620,
CW713, CW610, CN907.
Does initial read work
Check Loader circuit.
Check Loader Pickup.
Does it paly?
OK
Yes
No
No
Yes
Does it output audio?
Yes
Check AUDIO circuit.
No
Check POWER
SUPPLY circuit(PT900,IC901)
Check connection
CN700, CW712, CW902
Is STANDBY LED on?
No
Yes
Is POWER on?
Check power supply circuit.
Check Mi-Com IC(IC750)
No
Yes
Turn Power on.
Insert AC Power Cord.
10
Summary of Contents for DHC-X100N
Page 11: ...8 Internal Block Diagram of ICs M62446AFP 21 8 Internal Block Diagram of ICs 20 ES6638 NJM4558...
Page 12: ...8 Internal Block Diagram of ICs 22 AK5381...
Page 13: ...9 Block Diagram 23...
Page 14: ...10 Wiring Diagram 24...
Page 15: ...11 Schematic Diagram FRONT 25...
Page 16: ...11 Schematic Diagram Mi COM 26...
Page 17: ...11 Schematic Diagram INPUT VIDEO 27...
Page 18: ...11 Schematic Diagram AMP 28...
Page 19: ...11 Schematic Diagram POWER 29...
Page 20: ...12 Printed Circuit Diagram 30 TOP View MAIN PCB with DHC 100N Front...
Page 21: ...12 Printed Circuit Diagram Bottom View 31...
Page 22: ...12 Printed Circuit Diagram 32 Bottom View Top View IN OUT...
Page 23: ...Bottom View Top View 12 Printed Circuit Diagram FRONT DHC X150N Only 33...
Page 24: ...14 Exploded View and Mechanical Parts List DHC X100N Only 34...
Page 25: ...14 Exploded View and Mechanical Parts List 35...
Page 26: ...14 Exploded View and Mechanical Parts List DHC X150N Only 36...
Page 27: ...14 Exploded View and Mechanical Parts List 37...
