Sony MDS-PC1 Service Manual page 46

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 / W or less unless otherwise
4
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.
no mark : STOP
( ) : PLAY
< > : REC
∗
: Can not be measured.
• 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 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.
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.)
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.
• Indication of transistor
• Indication of transistor
C
These are omitted
E B
• Indication of transistor
E C B
These are omitted
– 49 –
WAVEFORMS
– BD SECTION – – MAIN SECTION –
1
1
0.46Vp-p
IC101 1, 2 I, J (PLAY mode)
IC401 !£ XOUT
2 2
0.1Vp-p
IC101 4 A (PLAY mode) IC201 0 LRCK1, @• LRCK
3 3
0.06Vp-p
IC101 8, 9 E, F (PLAY mode) IC201 !¡ BCK1, @§ BCK
4 4
3.1Vp-p
22.581MHz
IC121 !§ OSCI
IC201 !∞ MCK1, @™ 256CK
5 5
3.2Vp-p
44.1kHz
IC121 @∞ LRCK
IC201 @∞ 512FS
6
6
3.8Vp-p
2.822MHz
IC121 @§ XBCK IC201 #∞ XOUT
7
3.8Vp-p
11.29MHz
IC121 @¶ FS256
8
3.2Vp-p
176.4kHz
IC121 (º FS4
– PANEL SECTION –
1
3.4Vp-p
2.361MHz
7MHz
IC701 %ª OSC1
3.3Vp-p
44.1kHz
3.6Vp-p
2.822MHz
5.6Vp-p
22.553MHz
2.9Vp-p
22.578MHz
5Vp-p
22.58MHz
– 50 –
3.7Vp-p