Panasonic CF-73SCUTSBM Service Manual - Page 19

Result, Source of, problem, Component, Troubleshooting, procedures, Symptom, Real Time Clock is

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Page 19 highlights

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

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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
5
Default configuration in
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
YES
Expansion card
NO
Main PCB
9
Real Time Clock failure
9-1
Main PCB
IC3
YES
Error during
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
NO
Main PCB
IC3
X2
YES
Error during
SETUP
NO
Main PCB
IC3
YES
Expansion RAM
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
Source of
problem
8
Check software setting.
Replace the Speakers.
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?
Replace the expansion card.
Does operation return to
normal?
Component
Troubleshooting
procedures
Symptom
Does resetting the date/time
in SETUP correct the
problem?
13-1
Were the correct settings
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?
12-4
Does resetting through
SETUP correct the problem?
10
Replace the battery.
Does operation return to
normal?
8-2
8-1
Does resetting through
SETUP correct the problem?
10-1
10-2
Dead RTC Battery
Real Time Clock is not
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.)
15
PCI failure
Does the system return to
normal if the expansion card
is removed?
Replace the expansion card.
Does operation return to
normal?
15-1
15-2
16