CX-LDB10, CX-LDB20 - Sony Audio Service Manual (repair manual). Page 2

2

For Schematic Diagrams.
Note:
• All capacitors are in 

µ

F unless otherwise noted.  (p: pF).

50 WV or less are not indicated except for electrolytics and
tantalums.

• All resistors are in 

Ω

  and 

1

/

4

 

W or less unless otherwise

specified.

•         

f

: internal component.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

• Voltages and waveforms are dc with respect to ground un-

der no-signal (detuned) conditions.
no mark: CD ON

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F

: TUNER

J

: CD PLAY

E

: TAPE PLAY

j

: TAPE REC

f

: AUX IN

• Abbreviation

AUS

: Australian model

AR

: Argentine model

E51

: Chilean and peruvian models

KR

: Korean model

MX

: Mexican model

RU

: Russian model

SP2

: Singapore model

SP6

: Singapore and Malaysia model

TW

: Taiwan model

For Printed Wiring Boards.
Note:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•

  W

: indicates side identified with part number.

•        

f

: internal component.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Note: The components identified by mark 

0

 or dotted

line with mark 

0

 are critical for safety.

Replace only with part number specified.

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.

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Q

•