Sony MDS-SE9, Service Manual

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41 41
MDS-SE9
• Waveforms
1
IC101
ek
(RF)
(PLAY mode)
1.4 Vp-p
500 mV/DIV, 200 ns
2
IC101
ef
(FE)
(PLAY mode)
approx.
460 mVp-p
200 mV/DIV, 20 ms/DIV
3
IC101
wh
(TE)
(PLAY mode)
200 mV/DIV, 20 ms/DIV
approx.
620 mVp-p
5.5 ns
3.3 Vp-p
5
IC801
5
(CLKA)
1V/DIV, 4 ns/DIV
88.6 ns
4.3 Vp-p
4
IC803
8
(XOUT)
1 V/DIV, 40 ns/DIV
6
IC151
w;
(XOUT)
125 ns
5.0 Vp-p
1 V/DIV, 100 ns/DIV
12
µ
s
12.5 Vp-p
5 V/DIV, 4
µ
s/DIV
7
Q255 collector (TAPE REC)
8
IC702
qa
(XOUT)
100 ns
3.6 Vp-p
1 V/DIV, 40 ns/DIV
0
IC703
wd
(X1)
3.9 Vp-p
1V/DIV, 100ns/DIV
167ns
9
IC703
6
(12MHZOUT)
4.5 Vp-p
1V/DIV, 40ns/DIV
83ns
• Circuit Boards Location
PANEL board
POWER board
MD DIGITAL board
MAIN board
BD board
SECTION 7
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.
•
f
: internal component.
•
5
: fusible resistor.
•
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.
• : Pattern from the side which enables seeing.
•
A
: B+ Line.
•
B
: 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 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
BD board
no mark : MD stop
( ) : MD playback
MD DIGITAL board
no mark : MD stop
Other boards
no mark : FM
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Indication of transistor
Caution:
Pattern face side:
Parts on the pattern face side seen from
(SIDE B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE A) the parts face are indicated.
• Signal path.
h
: DIGITAL IN
e
: DIGITAL OUT
E
: PB (TAPE)
a
: REC (TAPE)
p
: PB (MD)
l
: REC (MD)
J
: USB
B
These are omitted.
C E
B
These are omitted.
C E
C
B
These are omitted.
E
Q
BD Board
MD DIGITAL Board
MAIN Board
✩
IC195 is a written in and settled EEPROM. Supply with a
single article has not been carried out. In case you exchange
by BD board (A-4731-095-A), please put on IC195 currently
used with the model again.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.