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SONY CDX424RF
Service Manual


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

Description of SONY CDX424RF 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 16 (click to view)
SECTION 6 ELECTRICAL ADJUSTMENTS
Note: 1. Perform adjustments as given. 2. Power supply voltage: DC14.4 V (more than 3A).

• TRACKING OFFSET CHECK
[RF BOARD] – Conductor Side –

• FOCUS BIAS CHECK
CNJ12
[RF BOARD] – Conductor Side –

oscilloscope + – BP11 (TE)
+ –

oscilloscope CNJ12 TP (RF)

IC51

TP (VC) IC11

TP (VC) IC11

Procedure: 1. Connect the oscilloscope to BP11 (TE) and TP (VC) on the RF board. 2. Put the set into play mode by loading the disc. 3. Press the = AMS + button, and check the traverse waveform*.
IC51

Procedure: 1. Connect the oscilloscope to TP (RF) and TP (VC) on the RF board. 2. Put the set into play mode by loading the disc. 3. Confirm that oscilloscope waveform is clear and check RF 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.

4. Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0 V dc, and check this level.
* Traverse waveform: This is the tracking error wave form appears when crossing the track.

Traverse waveform

VOLT/DIV : 500 mV TIME/DIV : 2 ms Center : 0 V

RF signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 ns level: 1.4 ± 0.3 Vp-p

A 0V B A=B traverse waveform (100 track jump waveform)

– 16 –

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