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