Sony MX-E501 service manual SELF-DIAGNOSTIC Display Mode, Self-diagnostic mode

MZ-E501

4-6. SELF-DIAGNOSTIC DISPLAY MODE

4-6-1. Outline of the function

The Self-diagnostic system is used in this set. If an error occurs during playback, this system detects the fault through the microprocessor’s mechanism and power control blocks and stores the cause in EEPROM in a history format.

This history, which can be viewed in the TEST MODE, provides the means of locating the fault in troubleshooting.

4-6-2. Self-diagnostic mode

1.Set the TEST MODE.

2.With all the LCD display segments blinking on the set, press DISPLAY key and the Self-diagnostic mode is entered.

001 1 Adrs

3.Hereinafter, each time > N key is pressed, the reference information display changes as follows:

0XX	1	# # # #
0XX
	N	# # # #

0XX N1 # # # #

0XX N2 # # # #

0XX R – – – –

History code	Simplified contents
Error display code	• Press .

key to go back to the previous display.

• Contents of the history codes

			History code number			Contents
				1		The first error that occurred.
				N		The last error that occurred.
				N-1		The first error from the last one.
				N-2		The second error from the last one.
				R		Total recording time ( – – – – is displayed
						for MZ-E501)
• Description of the error display codes
Contents of fault	Display code	Meaning of code		Simplified		Description
				contents
No error	00	No error		– – – –	No error
	01	Access target address illegally specified		Adrs	An attempt to access an abnormal address.
Servo system error	02	HIGH TEMP		Temp	HIGH TEMP
	03	FOCUS ERROR		Fcus	Focus off-center.
	04	SPINDLE ERROR		Spdl	Abnormal rotation of disc
TOC error	11	TOC ERROR		TOC	Faulty TOC contents
Power system error	12	READ DATA ERROR		Data	Data could not be read at SYNC
	22	LOWBATT		LBat	Instantaneous interruption detected.
	31	OFFSET ERROR		Ofst	Offset error
Offset error	32	FE_ABCD_OFFSET_ERR		ABCD	FE ABCD Offset error
	33	TE_OFFSET_ERR		TE	TE Offset error
	34	X1_TE_OFFSET_ERR		X1TE	X1 TE Offset error

4-6-3. Clearing the error display code After servicing, reset the error display code.

1.Set the TEST MODE.

2.Pressing the DISPLAY key on the remote control activates the self-diagnosis display mode.

3.To reset the error display code, press X key (2 times)on the remote control when the code is displayed. (except “R - - - -” ) (All the data on the 1st, N, N-1 and N-2 will be reset)

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