Panasonic CF-72X3UUBDM - Toughbook 72 - Pentium 4-M 1.8 GHz Service Manual page 22

4.4.6. HDD DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No. Symptom
1 Does not boot from HDD.
2 Cannot read from HDD.
Cannot write to HDD.
3
Damage to data written to
HDD.
Damage to data read from
HDD.
HDD contents are
destroyed.
4 Dignositic Test reports
problem in HDC or HDD.
5 Access lamp does not
light.
6 Abnormal sound.
7 Hard disk failure
Troubleshooting
procedures
No.
1-1 Has the HDD been partitioned?
Are there system files on the
1-2
HDD?
Replace the HDD.
1-3 Does operation return to
normal?
Replace the HDD cable.
1-4 Does operation return to
normal?
2-1 Has the HDD been formatted?
Replace the HDD.
2-2 Does operation return to
normal?
Replace the HDD cable.
2-3 Does operation return to
normal?
Replace the HDD.
3-1 Does operation return to
normal?
Replace the HDD cable.
3-2 Does operation return to
normal?
Replace the HDD.
4-1 Does operation return to
normal?
Has the HDD been
5-1
configured in the OS?
Replace the HDD.
5-2 Does operation return to
normal?
Replace the LED PCB.
5-3 Does operation return to
normal?
Replace the Main PCB.
5-4 Does operation return to
normal?
6-1 Replace the HDD.
Does executing
7-1
correct the problem?
Replace the HDD.
7-2 Does operation return to
normal?
Replace the HDD cable.
7-3 Does opration return to
normal?
4 - 10
Source of
problem
Result
YES Go to No. 1-2
NO Improper setting
YES Go to No. 1-3
Software on the
NO
HDD
YES HDD
NO Go to No. 1-4
YES HDD cable
NO Main PCB
YES Go to No. 2-2
NO HDD format
YES HDD
NO Go to No. 2-3
YES HDD cable
NO Main PCB
YES HDD
NO Go to No. 3-2
YES HDD cable
NO Main PCB
YES HDD
NO Main PCB
YES Go to No. 5-2
NO Improper setting
YES HDD
NO Go to No. 5-3
YES LED PCB
NO Go to No. 5-4
YES Main PCB
NO HDD cable
HDD
Format data
FDISK YES
destroyed
NO Go to No. 7-2
YES HDD
NO Go to No. 7-3
YES HDD cable
NO Main PCB
Component
IC3
IC3
IC3
IC3
LD907
IC3
IC3