Matsushita CF-18JHU70TW service manual Error Messages and Troubleshooting

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5.5 . Error Messages and Troubleshooting

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.

 

Test classification

Screen display test items

Contents

1

CPU

A20 GATE TEST

Address 20 line

2

(CPU related)

CACHE ON/OFF

Cache memory on/off

3

 

NPU OPERAND TEST

Floating point processor function

4

RAM (Memory related)

RAM STANDARD

Memory standard

5

CONTROL

DMA PAGE REG TEST

DMA page register

6

(Control ICs on the

DMA REGISTER TEST

DAM register

7

main board, etc.)

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

 

 

 

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

IO

KEYBOARD REG TEST

Keyboard

17

(Input-output)

PS/2 MOUSE REG

Mouse

18

COMMUNICATION

SERIAL WRAP TEST

Serial loop back (jig required)

19

 

SERIAL ALL INTERNAL TEST

Serial port

20

 

PARALLEL REGISTER R/W

Parallel register

21

AUX

PCIC ALL TEST

PCIC

(Auxiliary functions)

Card Bus REG

Card Bus port

 

 

USB REG

USB port

22

VIDEO

VGA ALL TEST

VGA

23

(Display related)

SVGA RAM TEST

SVGA RAM

24

 

VESA MODE TEST

VESA mode

25

DISK

FD WT/RD/WP TEST

FD write/read/write protection

26

(FDD, HDD)

HDD ALL TEST

Only HDD lead selected

27

UNIQUE

ECP REGISTER R/W

Parallel port

28

(Individual functions)

EPP REGISTER R/W

Parallel port

29

 

EXT. CMOS R/W TEST

Extension CMOS R/W test

5-6

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Contents CF-18 Page Laser Safety Information Page Page Contents Page Power-On Self Test Boot Check Stuck key 02D0 System cache error Cache disabled Preparation EquipmentSelf Diagnosis Test Outline of Self Diagnostic TestsList of main test items Automatic TestPeripheral Test LAN Test Modem Test Wireless LAN TestTest Selection End of test Test classification Screen display test items Contents Error Messages and TroubleshootingWiring Connection Diagram Disassembly/Reassembly Removing the DU Lid Unit Removing the SpeakerRemoving the Rear Cabinet Removing PAD PCB and I/O Removing the Wireless Module Port PCB and Modem PCBRemoving the Audio PCB Removing Main PCB Removing the Display unit Removing LED PCB and SwitchRemoving the CPU Heat Plate and Lithium Battery DXYN2+J6FNL Removing the LCD HingePcmcia LID Assy Removing Each CoverExploded View BT1 2 + 0.02N m + 0.2kgf cm K83 K82 K13 K10 K20 K401 K600 K80 K409 K80-9 K210 K200-30 K211 K200-30-4 18 + 0.02N m + 0.2kgf cm Screw tightening torque Replacement Parts List Packing Material USB LID Rubber DFHR3535ZA Speaker Cable Tube LCD Front CABINET/TS Panel Assy DXYN2+J6FNL Screw DFHR6220ZA Dimm Holder