Sony hcd-sd1 service manual Section Test Mode, Sequence of Aging Mode

SECTION 5

TEST MODE

AGING MODE

This unit is equipped with an aging mode.

Use this mode for analyzing defects and for checks after completing repairs. After repairs, perform aging 100 times and check that the unit is normal. The aging mode is executed in the following sequence.

The aging mode will continue as long as the unit is normal.

If the unit becomes abnormal, it will display the state and number of cycles, and operations will stop. (Refer to Table 1.)

Sequence of Aging Mode:

Start

Sets the CD function and reads the CD TOC.

CD TOC OK?	NO
	Message 1

YES

Pauses first song.

OK?

YES

NO

Message 2

Last song search paused state

OK?	NO	Message 3
YES
Starts last song playback

OK?	NO
	Message 4
YES
End playback?	NO
YES	OK
	Is CD playing?
	NG
Opens the CD tray	Message 4
OK?	NO
	Message 5
YES
Closes the CD tray

OK?	NO
		Message 6
YES
Power OFF

Display of number of aging cycles

Power ON

Procedure:

1.Press the DISPLAY button and =/TUNING/0

2.To end aging, press the u button and end.

button together.

Table-1 Messages and Main Reasons for Stop of Aging

No	Error Messages	Details of Error	Main Causes
1	CD No Disc NG	Cannot read CD TOC.	Optical defect, spindle defect (including motor), cannot read
			Q data, disc defect (scratches, etc.), bad focus, bad GFS, etc.
2	CD Pause NG	Cannot set CD pause in	Disc defect (scratches, etc.), cannot read Q data, etc.
		CD synchro mode.
3	CD Search NG	Cannot search last track on CD.	Optical defect, sled, tracking defect (including motor), cannot
			read Q data, disc defect (scratches, etc.).
4	CD Play NG	Cannot play last track on CD.	Optical defect, cannot read Q data, disc defect (scratches, etc.),
			etc.
5	CD Open NG	Cannot open CD tray.	LOAD OUT SW defect
6	CD Close NG	Cannot close CD tray.	LOAD IN SW defect

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