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SONY HCDGRX2
Service Manual


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

Description of SONY HCDGRX2 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 13 (click to view)
CD SECTION
Note: 1. CD Block is basically constructed to operate without adjustment. Therefore, check each item in order given. 2. 3. 4. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. Use an oscilloscope with more than 10MΩ impedance. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. Adjust the focus bias adjustment when optical block is replaced.

RF Level Check
CD DECODER board TP (RF) CN12 (VC) oscilloscope

Procedure : 1. 2. 3. 4. Connect oscilloscope to test point TP (RF) on CD DECODER board. Turned Power switch on. Put disc (YEDS-18) in and playback. Confirm that oscilloscope waveform is clear and check RF

5.

Focus Bias Adjustment

DC voltmeter CD DECODER board CN12 FEO VC

signal level is correct or not. Note: Clear RF signal waveform means that the shape “◊” can be clearly distinguished at the center of the waveform.
VOLT/DIV: 200 mV TIME/DIV: 500 nS level: 1.0 –0.2 Vp-p
+0.3

+ –

Procedure: 1. Connect DC voltmeter to test point CN12 (FEO), (VC) on CD DECODER board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in and stop. 4. Adjust VR01 so that the DC voitmeter reading is 0 ± 20 mV. Adjustment Location: CD DECODER board

Adjustment Location: CD DECODER board

Focus Gain Adjustment (VR02) This gain has a margin, so even if it is slightly off. There is no problem. Therfore, do not perform this adjusment. Please note that it should be fixed to mechanical center position when you moved and do not know original position.

Adjustment Location [CD DECODER BOARD] — Component side —

Focus Gain CN12 VR02 IC03 VR01 R07 Focus Bias IC01 RF Level

— 13 —

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