Sony MDS-S50 For schematic diagrams, For printed wiring boards, BD Board, Main Board

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 ∝F unless otherwise noted. pF: ∝∝F 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.

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	piéce portant le numéro
number specified.	spécifié.

•A: B+ Line.

•B: B– Line.

•H: adjustment for repair.

•Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

no mark : STOP

( ) : PLAY

<> : REC

∗: Impossible to measure

•Voltages are taken with a VOM (Input impedance 10 MΩ). 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.

E : PB

j : REC

p : PB (DIGITAL OUT)

l: REC (DIGITAL IN)

•Abbreviation

CND : Canadian model

SP	: Singapore model
HK	: Hong Kong model
AUS	: Australian model

For printed wiring boards.

Note:

•X: parts extracted from the component side.

•Y: parts extracted from the conductor side.

•a : Through hole.

•b: 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 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.

B C E

These are omitted.

B C E

These are omitted.

C

Q These are omitted.

B E

•WAVEFORMS

–BD Board –

1 IC101 ek (RF)

1.3Vp-p

2 IC101 ef (FE) (Play mode)

0.2Vp-p

3 IC101 wh (TE) (Play mode)

1.6Vp-p

4 IC151 qh (OSCI)

3.1Vp-p

22 nesc

5 IC151 wj (LRCK)

3.2Vp-p

22.6 ∝sec

6 IC151 wk (XBCK)

3.8Vp-p

354 nsec

7 IC151 o; (FS4)

3.2Vp-p

5.67 ∝sec

8 IC171 3

1.0Vp-p

22 nsec

37 37

MDS-JE470

– MAIN Board –

1 IC1 qd (XOUT)

2.7Vp-p

100 nsec

2 IC550 qs

2.6Vp-p

22 nsec