Panasonic CF-72 - Manual (Page 21)

4 - 9
4.4.5. SDD DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
YES
NO
No. Symptom
Troubleshooting
procedures
Source of
problem
No. Result
1
1-1
Replace the SDD.
Does operation return to
normal? Access lamp does not
light.
Component
SDD
Go to No. 1-2
2
2-1
In the floppy disk warped or
bent, or labels interfering? Cannot insert floppy disk.
Cannot remove floppy disk. Floppy disk
SDD YES
NO
3
3-1
Are there system files on the
media? Does not boot from SDD. Main PCB
Software IC3 YES
NO
4
4-1
Is the floppy disk format
correct for the operating
system currently being used? Cannot read from floppy
disk.
Cannot write to floppy disk.
Go to No. 4-2
Floppy disk format
YES
NO
5
5-1
Try cleaning the disk heads.
Does this fix the problem? Floppy disk is scratched or
otherwise damaged. Heads were dirty
SDD YES
NO
6
6-1
Was the eject button pressed
while the system was
accessing the disk? Content of floppy disk is
destroyed.
Operating mistake
Go to No. 6-2
YES
NO
6-2
Replace the SDD.
Does operation return to
normal?
SDD
Main PCB IC3
YES
NO
7
7-1
Does this occur for a specific
floppy disk? Damage to contents written
to floppy disk.
Damage to contents read
from floppy disk. Floppy disk
Go to No. 7-2 YES
NO
8
8-1
Does it sound like the head is
moving? Abnormal sound. Normal
Go to No. 8-2
YES
NO
7-2
7-3
Replace the SDD.
Does operation return to
normal?
Replace the SDD FPC.
Does operation return to
normal?
8-2
Does the abnormal sound
stop when the motor stops
running.
SDD
SDD FPC
Go to No. 7-3
Main PCB IC3
YES
YES
NO
NO
SDD YES
9
9-1
9-2
Replace the SDD.
Does operation return to
normal?
Replace the SDD FPC.
Does operation return to
normal? Diagnostic Test reports
problem in FDC.
SDD
SDD FPC
Go to No. 9-2
Main PCB IC3
YES
YES
NO
NO
4-2
Does this occur for a specific
floppy disk? Floppy disk
Go to No. 4-3 YES
NO
4-3
Try cleaning the disk heads.
Does this fix the problem? Heads were dirty
Go to No. 4-4 YES
NO
4-4
4-5
Replace the SDD.
Does operation return to
normal?
Replace the SDD FPC.
Does operation return to
normal?
SDD
Go to No. 4-5
YES
NO
1-2
Replace the LED PCB.
Does operation return to
normal?
LED PCB
Go to No. 1-3
LD703 YES
NO
1-3
Replace the Main PCB.
Does operation return to
normal? Main PCB
SDD FPC
IC3 YES
NO
SDD FPC
Main PCB IC3
YES
NO