SONY CMTEP515
Service Manual

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Contains Circuit Diagrams
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PDF Format
Complete manual
Language: English

Price: $4.99

Description of SONY CMTEP515 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 15 (click to view)

HCD-EP515
SECTION 5 ELECTRICAL ADJUSTMENTS
CD SECTION
Note: 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10Mâ�¦ 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.

RFDC signal waveform
VOLT/DIV: 200 mV TIME/DIV: 500 ns

level: 1.15 Â± 0.35 Vp-p

S-curve Check Connection:
oscilloscope CD board TP (FE) TP (DVC)
+ â��

Checking Location: CD board (Conductor side) RFAC Level Check Connection:
oscilloscope CD board

Procedure: 1. Connect an oscilloscope to test point TP (FE) and TP (DVC) on the CD board. 2. Turn the power on. 3. Put the disc (YEDS-18) in and turned power switch on again and actuate the focus search. (actuate the focus search when 4. disc table is moving in and out) Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2 Â± 1 Vp-p.
S-curve waveform

TP (RFAC) TP (VC)

+ â��

Procedure: 1. Connect an oscilloscope to test point TP (RFAC) and TP (VC) on the CD board. 2. Turn the power on. 3. Put the disc (YEDS-18) in to playback the number five track. 4. Confirm that oscilloscope waveform is clear and check RFAC signal level is correct or not.
Note: A clear RFAC signal waveform means that the shape â��â��â�� can be clearly distinguished at the center of the waveform.

symmetry

RFAC signal waveform

A within 2 Â± 1 Vp-p B

VOLT/DIV: 200 mV TIME/DIV: 500 ns

level: 1.35 Â± 0.4 Vp-p
Note: â�¢ Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. â�¢ Take sweep time as long as possible and light up the brightness to obtain best waveform.

Checking Location: CD board (Conductor side) RFDC Level Check Connection:
oscilloscope CD board TP (RFDC) TP (DVC)
+ â��

Checking Location: CD board (Conductor side) (See page 14)

Procedure: 1. Connect an oscilloscope to test point TP (RFDC) and TP (DVC) on the CD board. 2. Turn the power on. 3. Put the disc (YEDS-18) in to playback the number five track. 4. Confirm that oscilloscope waveform is clear and check RFDC signal level is correct or not.
Note: A clear RFDC signal waveform means that the shape â��â��â�� can be clearly distinguished at the center of the waveform.

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