Read Sony TCS-100DV Service Manual online
TCS-100DV
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6-4.
SCHEMATIC DIAGRAM
•
See page 25 for IC Block Diagrams.
430 mVp-p
4.6 ms
4.3 Vp-p
250 ns
1.3 Vp-p
17.5
µ
s
41 mVp-p
17.5
µ
s
• Waveforms
1
Q333 (emitter) (REC mode)
20 mV/DIV, 10 µs/DIV
20 mV/DIV, 10 µs/DIV
2
Q309 (base) (REC mode)
500 mV/DIV, 10 µs/DIV
500 mV/DIV, 10 µs/DIV
3
IC701
5
(XO)
2 V/DIV, 100 ns/DIV
4
IC601
wl
(PULSE)
200 mV/DIV, 2 ms/DIV
4 Vp-p
10.5
µ
s
5
IC702
4
(LX)
1 V/DIV, 2 µs/DIV
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• AC voltage readings in the REC bias oscillator with a level
meter.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PB (F: FWD, R: REV)
(
no mark : PB (F: FWD, R: REV)
(
) : REC (F: FWD, R: REV)
〈〈
〉〉
: DOUBLE REC
[
] : VOICE-UP PB
{
} : REC PAUSE (VOR)
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
E
: PB
a
: REC
N
: MIC
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