Sony CD Walkman D-NE500, Service Manual

D-NE500/NE506CK

15

15

5-2. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each
block.)

For schematic diagrams.
Note:
• 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 

Ω

 and 

1

/

4

W or less unless otherwise

specified.

•

%

: indicates tolerance.

•

f

: internal component.

•

C

: panel designation.

For printed wiring boards.
Note:

•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•

a

: Through hole.

•

f

: internal component.

•

: Pattern from the side which enables seeing.

•

A

: B+ Line.

• Total current is measured with CD installed.
• Power voltage is dc 4.5 V and fed with regulated dc power

supply from external power voltage jack.

• Voltages and waveforms are dc with respect to ground in

playback mode.
no mark : FM
(

) : AM

<

> : CD

∗

: Impossible to measure

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

Ω

).

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.

F

: FM

f

: AM

J

: CD

• Abbreviation

CND : Canadian model.
E92

: AC 120V area in E model.

MX

: Mexican model.

• Abbreviation

CND : Canadian model.
E92

: AC 120V area in E model.

MX

: Mexican model.

Q

C

These are omitted

E

B

E

These are omitted

C

B

C

These are omitted

B

E

Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)

pattern face are indicated.

Parts face side:

Parts on the parts face side seen from the

(Side A)

parts face are indicated.

Note:
The components identi-
fied by mark 

0

 or dotted

line with mark 

0

 are criti-

cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 

0

 sont critiques

pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.

5-3. WAVEFORMS

1

IC601

if

 (RFAC)

200mV/DIV, 400ns/DIV

2

IC601

rk

 (XTAO)

1V/DIV, 40ns/DIV

3

IC601

<z/v

  (C176)

1V/DIV, 2µs/DIV

450mVp-p

59ns

57µs

2.6Vp-p

2Vp-p