Read Panasonic CF-73 Service Manual online
No.
Result
YES Software setting
NO
Go to No.4-2
YES Speakers
NO
Go to No.4-3
4-3
Replace the Main PCB.
Main PCB
IC1000
IC1003
IC1004
IC1003
IC1004
5
Default configuration in
use
use
5-1
Check configuration.
Configuration
6 Interrupt controller failure
6-1
Main PCB
IC3
7 Timer failure
7-1
Main PCB
YES Go to No.8-2
NO
Main PCB
IC3
IC2
IC2
YES Expansion card
NO
Main PCB
9 Real Time Clock failure
9-1
Main PCB
IC3
YES
Error during
SETUP
SETUP
NO
Go to No.10-2
YES Battery
RTC battery
NO
Main PCB
IC3
11 Configuration error
11-1 Check configuration.
Configuration
YES Go to No.12-2
NO
Go to No.12-4
YES FDD
NO
Go to No.12-3
YES HDD
NO
Go to No.12-4
YES
Error during
SETUP
SETUP
NO
Main PCB
IC3
X2
YES
Error during
SETUP
SETUP
NO
Main PCB
IC3
YES
Expansion RAM
card
card
NO
Main PCB
IC2
IC4-11
YES Go to No.15-2
NO
Main PCB
IC2
YES Expansion card
NO
Main PCB
IC2
No.
Expansion card RAM
checksum error
checksum error
Source of
problem
8
Check software setting.
Replace the Speakers.
Does operation return to
normal?
Does operation return to
normal?
4-1
4-2
4 No Sound
Volume does not work.
Does the system return to
normal if the expansion card
is removed?
normal if the expansion card
is removed?
Replace the expansion card.
Does operation return to
normal?
Does operation return to
normal?
Component
Troubleshooting
procedures
Symptom
Does resetting the date/time
in SETUP correct the
problem?
in SETUP correct the
problem?
13-1
Were the correct settings
selected during SETUP?
Replace the FDD.
Does operation return to
normal?
selected during SETUP?
Replace the FDD.
Does operation return to
normal?
12-2
12-1
CMOS Checksum error
12
12-3
Replace the HDD.
Does operation return to
normal?
Does operation return to
normal?
12-4
Does resetting through
SETUP correct the problem?
SETUP correct the problem?
10
Replace the battery.
Does operation return to
normal?
Does operation return to
normal?
8-2
8-1
Does resetting through
SETUP correct the problem?
SETUP correct the problem?
10-1
10-2
Dead RTC Battery
Real Time Clock is not
updating
updating
13
14 Memory size/data error
14-1
Replace the expansion RAM
card.
Does operation return to
normal? (Go to "NO" if not
connected.)
card.
Does operation return to
normal? (Go to "NO" if not
connected.)
15 PCI failure
Does the system return to
normal if the expansion card
is removed?
normal if the expansion card
is removed?
Replace the expansion card.
Does operation return to
normal?
Does operation return to
normal?
15-1
15-2
16
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