CDR-205TX
ADJUSTMENT PROCEDURES-3
5. LD POWER ADJUSTMENT
5.1 Playback Power Adjustment
5.2 CD-R Record Power Adjustment
0.9 mW
±
0.05 mW
Optimizing playback power of laser diode.
Incapable of disc discrimination, playback, or track searches. Or track jumping.
Pickup objective lens
Test Point
Adjustment Value
Symptom when Out of Adjustment
Purpose
Adjustment method
FL Indication
R REC : 4.3 mW
±
0.1 mW (= A value) ; R Over Drive : A value + 0.1 mW
±
0.01 mW
Pickup objective lens
Optimizing CD-R recording power of laser diode.
Incapable of CD-R recording, self-pre recorded CD-R disc playback. Sound pauses,
track jumping, or bad RF wave shape (though no failure in playing CD).
Test Point
Adjustment Value
Symptom when Out of Adjustment
Adjustment method
FL Indication
[Procedure]
1. Enter the Test mode.
2. Press the INPUT key so that "ANALOG IN" appears on the FL display.
3. Press the YES key so that "CD" appears on the FL display.
4. Move the pickup to the position where the power is easy to measure by pressing the REWIND or
FAST FORWARD key ( /
).
5. Press the REC and EDIT/NO key in order, and light the LD.
6. Turn the JOG(AMCS) key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC key, and adjust it.
(initial state is the coarse adjustment.)
7. Press the PLAY/PAUSE key to register the adjustment if the power became the adjustment value.
<Adjustment of CD-R Record Power>
8. Turn the JOG(AMCS) key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC key, and adjust it.
(initial state is the coarse adjustment.)
9. Press the PLAY/PAUSE key to register the adjustment if the power became the adjustment value.
(assume the power when it was decided by A value)
When it is registered, shift to the Overdrive Power adjustment automatically.
<Adjustment of CD-R Overdrive Power>
10. Turn the JOG(AMCS) key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC key, and adjust it.
(initial state is the coarse adjustment.)
11. Press the PLAY/PAUSE key to register the adjustment if the power became the adjustment value.
SPACE
[Points]
1) LD power adjustment consists of three sessions: Playback power adjustment, CD-R record power adjustment,
and CD-RW record power adjustment.
2) Once the test mode is activated in order to perform the LD power adjustment, be sure to finish the three sessions
in one time, never to stop halfway; the three sessions should be always performed in one time.
3) Pressing the PLAY/PAUSE key (not ENTER key) decides the adjustment value of laser power,
and automatically changes over to the next session;
e.g. playback power adjustment --- <PLAY/PAUSE key> CD-R record power adjustment --- <PLAY/PAUSE key>
CD-R overdrive power adjustment
4) Press the STOP key when the last session (CD-RW record power adjustment) is finished. This is to stop the test mode.
" 00000000_ _x1 "
" PLAY_ _ _
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00_ _ "
" PLAY_ _ _
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XX_ _ "
" R_REC_ _
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0000 "
" R_REC_ _
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0XXX "
" R_OD_ _ _
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0000 "
" R_OD_ _ _
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0XXX "
" RwBIAS_
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0000 "
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