Panasonic CF-Y2 Service Manual ▷ View online
5.5. Error Messages and Troubleshooting
Test classification
Screen display test items
Contents
Possible damaged or faulty part
1
A20 GATE TEST
Address 20 line
2
CACHE ON/OFF TEST
Cache memory on/off
3
NPU OPERAND TEST
Floating point processor function
4 RAM
(Memory related)
RAM STANDARD
Memory standard
Main board
5
DMA PAGE REG TEST
DMA page register
6
DMA REGISTER TEST
DAM register
7
DMAC Transfer TEST
DAM transfer test
8
PIC HALT INSTRUCTION
TEST
Interrupt controller
9
PIC REGISTER TEST
Interrupt controller
10
RTC CMOS RAM TEST
Real time clock CMOS
11
RTC 12/24 HOUR TEST
Real time clock test
12
SPEAKER TEST
Speaker
13
PIT CH0 TEST
Interrupt timer CH0
14
PIT CH1 TEST
Interrupt timer CH1
15
PIT CH2 TEST
Interrupt timer CH2
16
KEYBOARD REG. TEST
Keyboard
Main board
17
PS/2 MOUSE REG.
Mouse
Main board
18
SERIAL WRAP TEST
Serial loop back (jig required)
19
SERIAL ALL INTERNAL TEST Serial port
20
PARALLEL REGISTER R/W Parallel register
PCIC ALL TEST
PCIC
Main board
Card Bus REG
Card Bus port
Main board
USB REG
USB port
Main board
22
VGA ALL TEST
VGA
LCD, main board, cable
23
SVGA RAM TEST
SVGA RAM
Main board
24
VESA MODE TEST
VESA mode
LCD, main board, cable, connector
25
FD WT/RD/WP TEST
FD write/read/write protection
FD, main board, cable
26
HDD ALL TEST
Only HDD lead selected
HDD, main board, cable, connector
27
ECP REGISTER R/W
Parallel port
Main board, cable, connector
28
EPP REGISTER R/W
Parallel port
Main board, cable, connector
29
EXT. CMOS R/W TEST
Extension CMOS R/W test
Main board
COMMUNICATION
Main board
DISK
(FDD/HDD)
The table below explains the parts that may be faulty or damaged should an error message occur while performing the various test
items of the self diagnostics program.
UNIQUE
(Individual
functions)
VIDEO
(Display related)
IO
(Input-output)
CONTROL
(Control ICs on the
main board, etc.)
CPU
(CPU related)
Main board
Main board
21
AUX
(Auxiliary functions)
22
6 Disassembly & Reassembly Instructions
6.1. Disassembly Flowchart
The chart below shows the various parts which should be removed in order to remove the parts that are to be replaced.
Parts can be replaced efficiently by following the disassembly steps in the chart.
23
6.2. Disassembly
6.2.1. Preparations
Before disassembly, be sure to perform the following steps.
1. End the Windows.
2. Turn off the power, and remove the AC Adapter.
3. Slide the two Hooks (A) of the Battery Pack toward the
inside, and remove the Battery Pack.
4. Remove Screw (A), and then remove the DIMM Cover
Ass’y.
Screw (A):XSB2+4FNL
5. If the optional DIMM Memory is provided, remove it. Also
disconnect any connected devices.
6.2.2. Removing the Keyboard Ass’y
Preparation: Make sure that the steps in section 6.2.1 have
been taken first.
1. Remove the six Screws (B).
Screw (B): DXHM0039ZA
2. Operate the Open Button of the LCD Unit, and open the
LCD Block to an angle of 90 degrees or more.
Release the four hooks of the LCD Unit and the two hooks,
one at the left and one at the right, by inserting a regular
slot-head watch screwdriver into them.
one at the left and one at the right, by inserting a regular
slot-head watch screwdriver into them.
3. Lift up the Keyboard from the LCD, and turn it over on the
Top Cabinet Ass’y.
4. Disconnect the FFC (Keyboard) from connectors (CN34)/
(CN35), and then remove the Keyboard Ass’y.
6.2.3. Removing the Bottom Cabinet
Ass’y
Preparation: Make sure that the steps in sections 6.2.1 and
6.2.2 have been taken first.
6.2.2 have been taken first.
1. Remove Screw (C).
Screw (C): DFHE5025XA
2. Remove the nine Screws (D).
Screw (D): DXHM0057ZA
24
3. Operate the Open Button of the LCD Unit, and open the
LCD Block to an angle of 90 degrees or more.
4. Remove the Screws (E) and the six Hooks, and then
remove the Side Cover (R).
Screw (E): DXQT2+G6FZL
Screw (E): DXQT2+G6FZL
5. Remove the six Hooks, and remove the Side Cover (L).
6. Remove the Disk Cover Shaft from the Disk Cover.
7. Remove the nine Screws (F) of the Top Cabinet Ass’y.
Screw (F): DXQT2+G6FZL
8. Set the Main Unit upright with its Combo Drive side facing
down.
9. Remove the two Hexagonal-head Screws (G) of the VGA
connector.
Hexagonal-head Screw (G): DFHE5035ZB
Hexagonal-head Screw (G): DFHE5035ZB
10. Remove the two Screws (H) and two Screws (J) of the LCD
Block, and then remove the Bottom Cabinet Ass’y.
Screw (H): XTB26+10GFN
Screw (J): DXYN3+J5FNL
Screw (H): XTB26+10GFN
Screw (J): DXYN3+J5FNL
25
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