Panasonic CF-73ECLTXKM - Toughbook 73 - Pentium M 1.4 GHz Service Manual page 24

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
procedures
No.
Replace the CD-ROM drive.
1-1 Does operation return to
normal?
Replace the LED PCB.
1-2 Does operation return to
normal?
Replace the Main PCB.
1-3 Does operation return to
normal?
Replace the media.
2-1 Does operation return to
normal?
Replace the CD-ROM drive.
2-2 Does operation return to
normal?
Replace the CD-ROM drive.
3-1 Does operation return to
normal?
Replace the media.
4-1 Does operation return to
normal?
21
Source of
problem
Result
YES CD-ROM drive
NO Go to No.1-2
YES LED PCB
NO Go to No. 1-3
YES Main PCB
NO CD-ROM FPC
YES Media
NO Go to No. 2-2
YES CD-ROM drive
NO Main PCB
YES CD-ROM drive
NO Main PCB
YES Media
NO CD-ROM drive
Component
LD1007
IC3
IC3
IC3