DOWNLOAD Panasonic CF-73 Service Manual ↓ Size: 7.23 MB | Pages: 118 in PDF or view online for FREE

Model
CF-73
Pages
118
Size
7.23 MB
Type
PDF
Document
Service Manual
Brand
Device
PC / NOTEBOOK COMPUTER
File
cf-73.pdf
Date

Panasonic CF-73 Service Manual ▷ View online

T
roubleshooting
02D0  System cache error - Cache disabled
Contact Panasonic Technical Support.
02F0: CPU ID:
CPU socket number for Multi-Processor error.
02F4:  EISA CMOS not writable
ServerBIOS2 test error:  Cannot write to EISA CMOS.
02F5:  DMA Test Failed
ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers.
02F6:  Software NMI Failed
ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt).
02F7:  Fail - Safe Timer NMI Failed
ServerBIOS2 test error: Fail-Safe Timer takes too long.
device address Conflict
Address conflict for specified device.
Allocation Error for: device
Run ISA or EISA Configuration Utility to resolve resource conflict for the specified device.
Failing Bits : nnnn
The hex number nnnn is a map of the bits at the RAM address which failed the memory test.
Each 1 (one) in the map indicates a failed bit.  See error 230,231 or 232 for offset address of the
failure in System, Extended or Shadow memory.
Invalid System Configuration Data
Problem with NVRAM (CMOS) data.
I/O device IRQ conflict
I/O device IRQ conflict error.
Operating System not found
Operating system cannot be located on either drive A: or drive C:.  Enter Setup and see if fixed
disk and drive A: are properly identified.
Parity Check 1 nnnn
Parity error found in the system bus.  BIOS attempts to locate the address and display it on the
screen.  If it cannot locate the address, it displays ????.  Parity is a method for checking errors
in binary data.  A parity error indicates that some data has been corrupted.
Parity Check 2 nnnn
Parity error found in the I/O bus.  BIOS attempts to locate the address and display it on the
screen.  If it cannot locate the address, it displays ????.
Press <F1> to resume, <F2> to Setup
Displayed after any recoverable error message.  Press <F1> to start the boot process or <F2> to
enter a Setup and change the settings. Write down and follow the information shown on the
screen.
14
9 Diagnosis
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
Result
YES Go to No.1-3
NO
Go to No.1-2
YES Go to No.1-3
Q699
NO
Go to No.1-2
If voltage is 0V
during the power
switch is set to
ON.
If not 0V
SW1000
If voltage of C738
is 3.3V
R705
R706
If lower than 3V
IC617
YES If voltage is 8-12V
NO
Main PCB
Q681
NO
If they show
soldered
completely
R589
R584, R585
R501 ~R506
YES
IC605, IC606
IC616
9.2 MAIN UNIT DIAGNOSIS(2/2)
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
Result
YES Go to No.1-2
NO
Improper setting
YES
Device for which
the problem
occurred
NO
Main PCB
IC3
2 Date or Time cannot be
input.
Date and Time does not
change properly.
Date and Time are not
displayed.
2-1
Replace the Main PCB.
Main PCB
IC3
X2
RTC battery
3 Memory count is too large
or too small.
3-1
Replace the Main PCB.
Main PCB
IC4-11
IC2
1 When a device is
selected for "Boot Up
Drive", the system boots
from a different device.
Component
1-1
Are there system files in the
device selected?
1-2
Does the unit operate
normally after replacing the
problem device.
No.
Symptom
Troubleshooting
procedures
Source of
problem
No power is sent to the
unit. (When using the
Battery Pack)
Is 8-12V applied to pins 1 of
Q681? (Whichever one)
1
Check soldered parts of
D666 ~ D668
D463 ~ D468.
2-1
Power cuts off during
operation.
2
No power is sent to the
unit. (When using AC)
1-2
Is 15V applied to pins 1-3 of
Q710? (Whichever one)?
YES
NO
1-5
Before setting the power
switch to ON, check voltage
on either side of SW1000 Is
Voltage 3.3V?
1-3
1-1
Is 15V applied to pins 5-8 of
Q699?
9.1 MAIN UNIT DIAGNOSIS(1/2)
Source of
problem
Component
Troubleshooting
procedures
Symptom
No.
15
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
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
Result
YES
Brightness
adjustment
NO
Go to No.1-2
YES LCD
NO
Go to No.1-3
YES Main PCB
IC800
NO
LCD cable
YES
Brightness
adjustment
NO
Go to No.2-2
YES LCD
NO
Go to No.2-3
YES Main PCB
CN801
IC14
NO
LCD cable
YES LCD
NO
Go to No.3-2
YES Main PCB
IC800
NO
LCD cable
YES Inverter PCB
NO
Go to No. 4-2
YES Inverter cable
NO
Go to No. 4-3
YES Backlight
NO
Main PCB
CN801
IC14
Replace the Main PCB.
Does operation return to
normal?
3 Part of the screen does
not display properly.
Display quality poor.
(Fuzzy or slanted, etc.)
3-2
9.3 LCD DIAGNOSIS
1 No picture appears on the
screen.
1-3
Replace the Main PCB.
Does operation return to
normal?
1-1
Replace the LCD.
Does operation return to
normal?
Source of
problem
Component
Troubleshooting
procedures
Symptom
No.
2-1
Does the LCD display
properly after brightness level
is adjusted?
1-2
Does the LCD display
properly after brightness level
is adjusted?
2 Display is too dark or too
bright.
Replace the LCD.
Does operation return to
normal?
2-2
2-3
Replace the Main PCB.
Does operation return to
normal?
3-1
Replace the LCD.
Does operation return to
normal?
4 Backlight does not turn
on.
Replace the Inverter PCB.
Does operation return to
normal?
Replace the Inverter cable.
Does operation return to
normal?
4-1
4-2
4-3
Replace the Backlight.
Does operation return to
normal?
17
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