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SONY CX-LEM330
Service Manual


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

Description of SONY CX-LEM330 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 14 (click to view)
CX-LEM330

3. Mode: Playback
test tape P-4-A100 (10 kHz, – 10 dB) L-CH V set R-CH R-CH waveform of oscilloscope H MAIN board SPEAKER terminal (J302) L-CH oscilloscope

FOCUS BIAS CHECK
CD board TP (RFACO) TP (VC)

oscilloscope (DC range)

+ –

Procedure : 1. Connect the oscilloscope to TP (RFACO) and TP (VC) on the CD board. 2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01) 3. Press the [CD NX] button. 4. Confirm that the oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape (◊) in the center of the waveform can be clearly distinguished. • RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.) TIME/DIV: 500 ns

in phase 45° good

90° 135° 180° wrong

4. After the adjustments, apply suitable locking compound to the parts adjusted. Adjustment Location:Record/Playback/Erase Head Tape Speed Check Mode: Playback
test tape WS-48B (3 kHz, 0 dB) set

1.1

0.2 Vp-p

frequency counter
+ – MAIN board SPEAKER terminal (J302) L-CH, R-CH

When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.

Checking Location: – CD BOARD (Conductor Side) –

1. Insert the WS-48B into the deck. 2. Press the N button on the deck. 3. Confirm that the frequency counter reads 3,000 ± 90 Hz. Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS) (WS-48B)

CD SECTION
Note: 1. CD Block is basically constructed to operate without adjustment. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10 MΩ 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. 5. Check the focus bias check when optical block is replaced.
TP (VC)

TP (RFACO)

14

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