Sony HCD-MD373 Waveforms – Bd Cd Section, BD MD 1/2 SECTION, BD MD 2/2 SECTION, MAIN 3/3 SECTION

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.

•¢ : internal component.

•C : panel designation.

Note:

The components identified by mark !or dotted line with mark !are critical for safety.

Replace only with part number specified.

•U : B+ Line.

•V : B– Line.

•H : adjustment for repair.

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

•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. F : FM

E : PB (TAPE)

d : PB (TAPE)

G : REC (DECK B)

J : CD

c : CD (digital out)

E : PB (MD)

j : REC (MD)

p : PB (digital out)

l : REC (dihgital in)

•Abbreviation

AUS : Australian model.

SP	: Singapore model..
MY	: Malaysia model.
JE	: Tourist model.
HK	: Hong Kong model.
AR	: Argentine model.
CH	:Chinese model.
KR	: korea model.

For printed wiring boards.

Note:

•X : parts extracted from the component side.

•p : parts mounted on the conductor side.

•® : Through hole.

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

•Indication of transistor

C
Q	These are omitted
BC E
B E
These are omitted

WAVEFORMS

– BD ( CD) SECTION –

1

3.1Vp-p

16.9MHz

IC101 %º XTAI

2

1.2Vp-p

(PLAY)

IC101 %¡ TE

3

2.5V

APPROX 500mVp-p (PLAY)

IC101 $¡ FE

4

2.5V

APPROX 200m Vp-p (PLAY)

IC101 #ª FE

5

2.4Vp-p

7.5∝sec

IC101 @§ MDP

– BD (MD) (1/2) SECTION –

1

0.46Vp-p

IC101 1, 2 (I, J) (PLAY mode)

2

0.1Vp-p

IC101 4 (A) (PLAY mode)

3

0.06Vp-p

IC101 8, 9 (E, F) (PLAY mode)

– BD (MD) (2/2) SECTION –

4

3.1Vp-p

22.581MHz

IC121 !§ (OSCI)

5

3.2Vp-p

44.1kHz

IC121 @¶ (LRCK)

6

3.8Vp-p

2.822MHz

IC121 @• (XBCK)

7

3.8Vp-p

11.29MHz

IC121 @ª (FS256)

8

3.2Vp-p

176.4kHz

IC121 (º (FS4)

HCD-MD373

– MAIN (3/3) SECTION –

1

5.2Vp-p

32.768kHz

IC501 !¡ XC-OUT

2

5.5Vp-p

16MHz

IC501 !£ X-OUT

– MD DIGITAL SECTION –

1

3.2Vp-p

10MHz

IC316 !£ (XOUT)

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