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SONY HCDVZ50MD
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY HCDVZ50MD Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 35 (click to view)
3. Mode: Playback
test tape P-4-A100 (10kHz, â10dB) main board CN302 Pin 1 (L-ch) Pin 2 (GND) L set R

oscilloscope

normal speed. 6. Adjust RV1002 of the LEAF SW board so that the reading of the frequency counter becomes 3000 ± 90 Hz. 7. Press the "/1 button, after the turned ON. 8. Insert the WS-48B into deck A, and insert the normal tape into deck B. 9. Press the SYNC REC button and display "TAPE A t B HIGHSPEED" and then press the REC button to start recording. 10.Press the x button. 11.Press the H button of deck B and check the reading of frequency counter becomes 3000 ± 90 Hz. Adjustment Location: LEAF SW board Sample Value of Wow and flutter W.RMS (JIS) less than 0.3% (test tape: WS-48B)

Pin 3 (R-ch) Waveform of oscilloscope

in phase

45° good

90°

135°

180° wrong

Playback Level Adjustment (Deck A, Deck B) Procedure: Mode: Playback Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301 (L-CH) and RV401 (R-CH) so that adjustment within the following adjustment level. Adjustment level: CN302 playback level: 301.5 to 338.3 mV (â8.2 to â7.2 dB) level difference between the channels: within ± 0.5 dB Adjustment Location: AUDIO board

4. After the adjustments, apply suitable locking compound to the parts adjusted. Adjustment Location: Playback Head (Deck A) Record/Playback/Erase Head (Deck B)

test tape P-4-L300 (315Hz, 0dB) set

level meter

Reverse

Foward

main board CN302 Pin 1 (L-ch) Pin 3 (R-ch)

Tape Speed Adjustment (Deck A) Note: Set the test mode using the following method and begin tape speed adjustment. In the test mode, the speed will switch to double speed or normal speed each time the HIGH-SPEED CD-MD SYNC button is pressed. Procedure: With the power turned ON, press the x button, DISPLAY button, and DISC 3 button simultaneously. (The âVOLUMEâ on the fluorescent display tube will blink while in the test mode.) To exit the test mode, press the "/1 button. 1. Insert the WS-48B into deck B. 2. Press the H button of deck B. 3. Press the HIGH-SPEED CD-MD SYNC button and play the tape at double speed. 4. Adjust RV1001 of the LEAF SW board so that the reading of the frequency counter becomes 6000 ± 180 Hz. 5. Press the HIGH-SPEED CD-MD SYNC button and play the tape at Adjustment Location [LEAF SW BOARD]
RV1001(High Speed) RV1002(Normal Speed)

RV1002

RV1001

34

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