Panasonic CF-73ECLTXKM Service Manual - Page 24

CD-ROM DVD-ROM Drive DIAGNOSIS, Result, Component, Troubleshooting, procedures, Source of, problem

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9.7 CD-ROM (DVD-ROM) Drive DIAGNOSIS Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing. No. Symptom 1 Access lamp does not light. 2 Cannot read from CD-ROM. 3 Tray does not open. 4 Abnormal sound. Troubleshooting Source of No. procedures Result problem Replace the CD-ROM drive. YES CD-ROM drive 1-1 Does operation return to normal? NO Go to No.1-2 Replace the LED PCB. 1-2 Does operation return to normal? YES LED PCB NO Go to No. 1-3 Replace the Main PCB. 1-3 Does operation return to normal? YES Main PCB NO CD-ROM FPC Replace the media. 2-1 Does operation return to normal? YES Media NO Go to No. 2-2 Replace the CD-ROM drive. YES CD-ROM drive 2-2 Does operation return to normal? NO Main PCB Replace the CD-ROM drive. YES CD-ROM drive 3-1 Does operation return to normal? NO Main PCB Replace the media. 4-1 Does operation return to normal? YES Media NO CD-ROM drive Component LD1007 IC3 IC3 IC3 21

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9
.7 CD-ROM (DVD-ROM) Drive DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
Result
YES
CD-ROM drive
NO
Go to No.1-2
YES
LED PCB
LD1007
NO
Go to No. 1-3
YES
Main PCB
IC3
NO
CD-ROM FPC
YES
Media
NO
Go to No. 2-2
YES
CD-ROM drive
NO
Main PCB
IC3
YES
CD-ROM drive
NO
Main PCB
IC3
YES
Media
NO
CD-ROM drive
2-2
Replace the CD-ROM drive.
Does operation return to
normal?
4
Abnormal sound.
Replace the media.
Does operation return to
normal?
4-1
Component
1-1
Replace the CD-ROM drive.
Does operation return to
normal?
1-2
Replace the LED PCB.
Does operation return to
normal?
Troubleshooting
procedures
Source of
problem
Replace the Main PCB.
Does operation return to
normal?
Tray does not open.
3
Cannot read from
CD-ROM.
2
3-1
Replace the CD-ROM drive.
Does operation return to
normal?
1-3
2-1
Replace the media.
Does operation return to
normal?
No.
Symptom
Access lamp does not
light.
1
21