Sony CDP-CE375, CDP-CE275 service manual Section Diagrams, Circuit Boards Location

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SECTION 6

DIAGRAMS

6-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

CDP-CE275/CE375

• Circuit Boards Location

Note on Printed Wiring Board:

X: parts extracted from the component side.

Y: parts extracted from the conductor side.

: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution:

 

Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

 

 

• Indication of transistor

Q

B C E

These are omitted.

Q

B C E

These are omitted.

Note on Schematic Diagram:

All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

All resistors are in and 1/4 W or less unless otherwise specified.

f : internal component.

C: panel designation.

Note:

Note:

The components identi-

Les composants identifiés par

fied by mark 0or dotted

une marque 0sont critiques

line with mark 0are criti-

pour la sécurité.

cal for safety.

Ne les remplacer que par une

Replace only with part

pièce portant le numéro

number specified.

spécifié.

 

 

Voltages and waveforms are dc with respect to ground under no-signal conditions.

no mark : CD PLAY

Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances.

Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc- tion tolerances.

Circled numbers refer to waveforms.

Signal path.

J : CD PLAY

c : DIGITAL OUT

A: B+ Line

B: B– Line

SENSOR board

LOADING MOTOR board

BD board

POWER SW board

JUNCTION board

KEY board

MAIN board

DISPLAY board

HEADPHONE board

15 15

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Contents 873-822-12 SpecificationsSection Test ModeADJ Mode Fluorescent Indicator Tube ALL LIT, and KEY Check ModeButton Button Number or Display Buttons and Corresponding Button NumbersMechanism Deck Check Mode Aging ModeRfac Level Check Electrical AdjustmentsCurve Check Rfdc Level CheckBalance Check Circuit Boards Location Section DiagramsIC BD To Main Board IC BD Schematic Diagram Main Board See page 24 for Waveform CDP-CE275/CE375