Matsushita CF-W4HWEZZBM Error Messages and Troubleshooting, Test classification, Contents

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	Possible damaged or faulty part
1	CPU	A20 GATE TEST	Address 20 line	Main board
2	(CPU related)	CACHE ON/OFF TEST	Cache memory on/off
3		NPU OPERAND TEST	Floating point processor function
4	RAM	RAM STANDARD	Memory standard	Main board
	(Memory related)
5	CONTROL	DMA PAGE REG TEST	DMA page register	Main board
6	(Control ICs on the	DMA REGISTER TEST	DAM register
7	main board, etc.)	DMAC Transfer TEST	DAM transfer test
8		PIC HALT INSTRUCTION	Interrupt controller
		TEST
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	IO	KEYBOARD REG. TEST	Keyboard	Main board
17	(Input-output)	PS/2 MOUSE REG.	Mouse	Main board
18	COMMUNICATION	SERIAL WRAP TEST	Serial loop back (jig required)	Main board
19		SERIAL ALL INTERNAL TEST	Serial port
20		PARALLEL REGISTER R/W	Parallel register
	AUX	PCIC ALL TEST	PCIC	Main board
21	(Auxiliary functions)	Card Bus REG	Card Bus port	Main board
		USB REG	USB port	Main board
22	VIDEO	VGA ALL TEST	VGA	LCD, main board, cable
23	(Display related)	SVGA RAM TEST	SVGA RAM	Main board
24		VESA MODE TEST	VESA mode	LCD, main board, cable, connector
25	DISK	FD WT/RD/WP TEST	FD write/read/write protection	FD, main board, cable
26	(FDD/HDD)	HDD ALL TEST	Only HDD lead selected	HDD, main board, cable, connector
27	UNIQUE	ECP REGISTER R/W	Parallel port	Main board, cable, connector
28	(Individual	EPP REGISTER R/W	Parallel port	Main board, cable, connector
29	functions)	EXT. CMOS R/W TEST	Extension CMOS R/W test	Main board

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