Read Panasonic CF-28 Service Manual online
4.4.6 HDD DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to
testing.
testing.
NO
No.
Symptom
Troubleshooting
procedures
Source of
problem
No.
Result
1
1-1
Has the HDD been partitioned?
Does not boot from HDD.
Component
Go to No. 1-2
Improper setting
Improper setting
YES
NO
2
2-1
Has the HDD been formatted?
Cannot read from HDD.
Cannot write to HDD.
Cannot write to HDD.
Go to No. 2-2
HDD format
HDD format
YES
NO
3
3-1
3-2
Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
Replace the HDD.
Does operation return to
normal?
Replace the LED PCB.
Does operation return to
normal?
Replace the Main PCB.
Does operation return to
normal?
Does operation return to
normal?
Replace the LED PCB.
Does operation return to
normal?
Replace the Main PCB.
Does operation return to
normal?
Damage to data written to
HDD.
Damage to data read from
HDD.
HDD contents are
destroyed.
HDD.
Damage to data read from
HDD.
HDD contents are
destroyed.
HDD
Go to No. 3-2
YES
5
5-1
5-2
5-3
5-4
Has the HDD been
configured in the OS?
configured in the OS?
Access lamp does not
light.
light.
Go to No. 5-2
Improper setting
YES
NO
4
4-1
Replace the HDD.
Does operation return to
normal?
Does operation return to
normal?
Dignositic Test reports
problem in HDC or HDD.
problem in HDC or HDD.
6
6-1
Replace the HDD.
Abnormal sound.
HDD
2-2
2-3
Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
HDD
Go to No. 2-3
YES
NO
1-2
Are there system files on the
HDD?
HDD?
Go to No. 1-3
Software on the
HDD
Software on the
HDD
YES
NO
1-3
1-4
Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?
HDD
HDD cable
Go to No. 1-4
Main PCB
IC43
YES
YES
NO
NO
HDD cable
Main PCB
IC43
YES
NO
HDD cable
Main PCB
IC43
YES
NO
HDD
Main PCB
IC43
YES
NO
HDD
Go to No. 5-3
YES
NO
LED PCB
Go to No. 5-4
LD5
YES
NO
Main PCB
HDD cable
IC43
YES
NO
7
Hard disk failure
Does executing FDISK
correct the problem?
correct the problem?
7-1
HDD cable
YES
Main PCB
NO
IC43
Go to No. 7-2
NO
Format data
destroyed
destroyed
YES
Replace the HDD.
Does operation return to
normal?
Does operation return to
normal?
7-2
Go to No. 7-3
NO
HDD
YES
Replace the HDD cable.
Does opration return to
normal?
Does opration return to
normal?
7-3
4 - 10
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