Sony MDS-PC1, Service Manual

Page: 46 / 79

– 49 – – 50 –
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.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor 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.)
•
U
: B+ Line.
•
V
: 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
∗
: Can not be measured.
• 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 pro-
duction tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: PB
q
: REC
a
: PB (DIGITAL OUT)
r
: REC (DIGITAL IN)
• Abbreviation
SP : Singapore model.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• Indication of transistor
• Indication of transistor
E C B
These are omitted
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.
1
IC701
%ª
OSC1
1
2
3
4
5
6
7
8
IC101
1
,
2
I, J (PLAY mode)
IC101
4
A (PLAY mode)
IC101
8
,
9
E, F (PLAY mode)
IC121
!§
OSCI
IC121
@∞
LRCK
IC121
@¶
FS256
IC121
@§
XBCK
IC121
(º
FS4
IC201
0
LRCK1,
@•
LRCK
IC201
!¡
BCK1,
@§
BCK
IC201
!∞
MCK1,
@™
256CK
IC201
@∞
512FS
IC201
#∞
XOUT
IC401
!£
XOUT
1
2
3
4
5
6
0.46Vp-p
0.1Vp-p
0.06Vp-p
3.1Vp-p
22.581MHz
3.2Vp-p
44.1kHz
3.8Vp-p
2.822MHz
3.8Vp-p
11.29MHz
3.2Vp-p
176.4kHz
3.4Vp-p
7MHz
3.3Vp-p
44.1kHz
3.6Vp-p
2.822MHz
5.6Vp-p
22.553MHz
2.9Vp-p
22.578MHz
5Vp-p
22.58MHz
3.7Vp-p
2.361MHz
WAVEFORMS
– BD SECTION –
– MAIN SECTION – – PANEL SECTION –
• Indication of transistor
C
E B
These are omitted