Pioneer PDR-F10 Service Manual page 50

PDR-F10
6.5.3 CD-RW Record Power Adjustment
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
[Procedure]
1. Move the pickup to the position where the power is easy to measure by pressing the CHAPTER key.
4 ¢ )
(
2. Press the SIDE A and SIDE B key in order, and light the LD.
<Adjustment of CD-RW BIAS Power>
3. Turn the SCAN key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the SIDE A key, and adjust it.
(initial state is the coarse adjustment.)
4. Press the PLAY/PAUSE key to register the adjustment if the power became the adjustment value.
When it is registered, shift to the CD-RW Record Power Adjustment automatically.
Note: In the CD-RW Bias Power Adjustment, in the case that the power is over 2.3 mW when the LD
lighted, do not need to perform the Bias Power Adjustment. Set adjustment value of the CD-RW
record power to + 0.9mW ± 0.05mW against the power in LD lighting then.
<Adjustment of CD-RW Record Power>
5. Turn the SCAN key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the SEDE A key, and adjust it.
(initial state is the coarse adjustment.)
6. Press the PLAY key to register the adjustment if the power became the adjustment value.
When it is registered, shift to the CD-RW Erase Power Adjustment automatically.
<Adjustment of CD-RW Erase Power>
7. Turn the SCAN key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the SEDE A key, and adjust it.
(initial state is the coarse adjustment.)
8. Press the SEARCH key to register the adjustment if the power became the adjustment value.
9. Press the STOP key to goes out the LD, and adjustment is completed.
50
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
Pickup objective lens
RW Bias : 2.3 mW ± 0.05 mW, RW Rec : 3.2 mW ± 0.05 mW, RW Erase : 5.2 mW ± 0.1 mW
Optimizing CD-RW recording power of laser diode.
Incapable of CD-RW recording, self-pre recorded CD-RW disk playback. Sound
pauses, track jumping, or bad RF wave shape (though no failure in playing CD).
Adjustment method
FL Indication