72
PDR-W839
[Procedure]
1. Press the AUTO SPACE key and shift to the MPP Offset Readjustment.
(Press the AUTO SPACE key several times to appear the right indication.)
2. Monitor the TE waveform with VC.
Be careful with monitoring TE waveform instead of MPP waveform in the readjustment !
3. Adjust the JOG key so that TE offset becomes zero.
4. Press the ENTER key to register the adjustment.
6.8.8 MPP Offset Readjustment
0 mV
±
50 mV
CN102-pin 5 (Tracking err)
Test Point
Adjustment Value
Optimizing DC offset voltage of tracking-error output circuit.
Playback does not function, incapable of searching, or track skipping.
Purpose
Symptom when Out of Adjustment
Adjustment method
FL Indication
CN102
TE
VC
5
6
10: 1 prove
Oscilloscope
Содержание PDR-W839
Страница 21: ...PDR W839 21 A B C D 5 6 7 8 5 6 7 8 3 5 A A 1 5 A 2 5 A 4 5 A 1 5 Servo Amp IC Multiplexer ...
Страница 22: ...PDR W839 22 A B C D 1 2 3 4 1 2 3 4 4 5 A EFM ENCODER A 1 5 A 5 5 A 1 5 OP CO 23 24 3 6 CD R CORE ASSY 4 5 ...
Страница 39: ...PDR W839 39 ...
Страница 50: ...PDR W839 50 A B C D 1 2 3 4 1 2 3 4 4 5 MAIN ASSY H MAIN ASSY H CN1201 D CN701 I To POWER SUPPLY ASSY CN1301 L ...
Страница 51: ...PDR W839 51 A B C D 5 6 7 8 5 6 7 8 H PNP1480 C SIDE A CN502 A 301 CN302 A ...
Страница 53: ...PDR W839 53 A B C D 5 6 7 8 5 6 7 8 H IC601 Q492 Q401 Q428 IC1811 IC901 Q490 Q481 1 SIDE B ...
Страница 55: ...PDR W839 55 A B C D 5 6 7 8 5 6 7 8 I L HEAD PHONE ASSY L OPERATING1 ASSY I CN801 H CN901 H To Key Board ...
Страница 56: ...PDR W839 56 A B C D 1 2 3 4 1 2 3 4 I L HEAD PHONE ASSY L OPERATING1 ASSY I IC701 Q708 ...
Страница 94: ...94 PDR W839 Pin Function 1 5 PDC069 CD R CORE ASSY IC501 Encoder IC ...
Страница 95: ...95 PDR W839 Pin Function 2 5 ...
Страница 96: ...96 PDR W839 Pin Function 3 5 ...
Страница 97: ...97 PDR W839 Pin Function 4 5 ...
Страница 98: ...98 PDR W839 Pin Function 5 5 ...
Страница 103: ...103 PDR W839 ...