Panasonic Toughbook CF-48 Series, Service Manual

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4.4.8 PRINTING DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No. Symptom
Troubleshooting
procedures
Source of
problem
Component
No. Result
1
Data does not print from
the printer.
1-1
Does the printer pass its
self-printing test?
YES Main PCB IC23
NO Printer
2-2
Is the Parallel Port (Data
Direction) setting correct?
YES Main PCB IC23
NO Improper setting
2 Data prints out incorrectly.
2-1
Does the printer pass its
self-printing test?
3
The unit hangs after
outputting data from the
printer.
3-1
Replace the Main PCB.
Does operation return to
normal?
YES Go to No. 2-2
NO Printer
YES Main PCB IC23
NO Printer
4 Print area is out of line.
4-1
Does the printer pass its
self-printing test?
YES Main PCB IC23
NO Printer
5
Data is printed all on one
line.
(Carriage return does not
work.)
4-2
Does the printer pass its
self-printing test?
YES Main PCB IC23
NO Printer
4.4.9 CD-ROM Drive DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No. Symptom
Troubleshooting
procedures
Source of
problem
Component
No. Result
1
Access lamp does not
light.
1-1
1-2
Replace the CD-ROM drive.
Does operation return to
normal?
Replace the LED PCB.
Does operation return to
normal?
YES
YES
CD-ROM drive
LED PCB
NO
NO
Go to No. 1-2
Go to No. 1-3
LD804
2-2
Replace the CD-ROM drive.
Does operation return to
normal?
YES CD-ROM drive
NO Main PCB IC13
2 Cannot read from DVD.
2-1
Replace the media.
Does operation return to
normal?
3 Tray does not open.
3-1
Replace the CD-ROM drive.
Does operation return to
normal?
YES Media
NO Go to No. 2-2
YES CD-ROM drive
NO Main PCB IC13
4 Abnormal sound.
4-1
Replace the media.
Does operation return to
normal?
YES Media
NO CD-ROM drive
1-3
Replace the Main PCB.
Does operation return to
normal?
YES Main PCB
NO CD-ROM FPC
IC13