Aiwa WD-X500M Service Manual page 5

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3. Description of CD Test Mode Functions
Mode Operation key
START
LOAD/
UNLOAD
RNDM 6
SEARCH
5 REP1
PLAY
TRAVERSE
3 INT
STOP REP 4
TE
L 13942296513
SLED
• Check the search mode without inserting a disc.
• Press the REPEAT button to release each mode.
Note 1:
If focus search is continuously operated for 10 minutes or more, the driver IC will generate heat, the protection circuit will operate, and
the CD player may not operate. In this case, turn power off, radiate heat for approx. 10 minutes, and then restart the player.
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Display
All segments light
All segments light
TOC READING
Track no., play time displayed.
Level displayed.
Track no. and play
time displayed.
All segments light
All segments light
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2 9
8
Operation
CHUCKING
Continuous focus search
PU lens repeats full-swing.
(Note 1)
Normal play.
Same as in search mode
if TOC READ is not possible.
Play pause status
Standby status
Q Q
3 6 7 1 3 1 5
PU moves to outer tracks.
PU moves to inner tracks.
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9 4 2 8
Details
Test mode starts
All servo OFF
Laser ON
VCC ON
Check APC circuit.
Measure laser current.
Check focus error waveform.
Focus servo
Tracking servo
CLV servo
Sled servo
Tracking servo OFF
All servo OFF
Laser ON/OFF
0 5 8 2 9 9 4 2 8
Sled servo
Mechanism operation check
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9 9
9 9