SONY HCD-DP900D
Instrukcja Serwisowa

Ver 1.3 2003.01

HCD-DP900D

DVD SECTION
When optical pick-up is exchanged, should make automatic servo adjustment by using the test disk.
Note :

3. Confirm that the S-Y level is 1.0 ± 0.1Vp-p.

1.0 ± 0.1 Vp-p

1. DVD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use HLX-504 (J-6090-088-A) or HLX-505 (J-6090-089-A) unless otherwise indicated. 3. Use an oscilloscope with more than 10M� impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. Video Level Adjustment (MB BOARD) Purpose This adjustment is made to satisfy the NTSC standard, and if not adjusted correctly, the brightness will be too large or small.

4. Connect oscilloscope to S-VIDEO output. (S-C teminal) 5. Connect that the S-C burst is 286 ± 50mVp-p.

286 ± 80 mVp-p

Oscilloscope

75 �

set

Adjustment Location
J601 VIDEO OUTPUT
MB BOARD (SIDE A)

Procedure: 1. Connect oscilloscope to VIDEO output. 2. Load a disc (HLX-504 or HL-505) playback. 3. Adjust the RV501 to attain 1.0±0.1Vp-p.

CN011

1.0 ± 0.1 Vp-p

(WHITE 75%)

S-terminal Output Check Purpose Check S-video output.

RV501 VIDEO LEVEL Adjustment

IC103 IC503

CN008
Oscilloscope

CN404

CN103

set
G G

75 �

J602 S-VIDEO OUTPUT

Procedure: 1. Connect oscilloscope to S-VIDEO out. (S-Y teminal) 2. Load a disc (HLX-504 or HL-505) playback.

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