CMT-SD1, CMT-SD3, HCD-SD1 - Sony Audio Service Manual (repair manual). Page 13

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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.)

CD TOC OK?

NO

YES

OK?

NO

OK?

NO

NO

YES

OK?

OK?

NO

OK?

NO

YES

NO

YES

YES

YES

OK

YES

NG

Start

Sets the CD function and reads the CD TOC.

Message 

1

Message 

2

Message 

3

Message 

4

Message 

5

Message 

6

Message 

4

Pauses first song.

Last song search paused state

Starts last song playback

Is CD playing?

End playback?

Opens the CD tray

Closes the CD tray

Power OFF

Display of number of aging cycles

Power ON

Optical defect, spindle defect (including motor), cannot read
Q data, disc defect (scratches, etc.), bad focus, bad GFS, etc.
Disc defect (scratches, etc.), cannot read Q data, etc.

Optical defect, sled, tracking defect (including motor), cannot
read Q data, disc defect (scratches, etc.).
Optical defect, cannot read Q data, disc defect (scratches, etc.),
etc.
LOAD OUT SW defect
LOAD IN SW defect

No

Error Messages

Details of Error

1

2

3

4

5
6

CD No Disc NG

CD Pause NG

CD Search NG

CD Play NG

CD Open NG
CD Close NG

Cannot read CD TOC.

Cannot set CD pause in
CD synchro mode.
Cannot search last track on CD.

Cannot play last track on CD.

Cannot open CD tray.
Cannot close CD tray.

Main Causes

Procedure:
1. Press the  DISPLAY  button and  

=/TUNING/0  button together.

2. To end aging, press the  

u  button and end.

Table-1 Messages and Main Reasons for Stop of Aging