Read Sony TCM-900DV Service Manual online
TCM-900DV
8
z
Waveforms
2
4
5
IC301 ql
IC401 ej
IC901 2
PB mode
VOLT/DIV : 1 V AC
TIME/DIV : 0.2
TIME/DIV : 0.2
µsec
PB (DPC AUTO) mode
VOLT/DIV : 1 V AC
TIME/DIV : 1
TIME/DIV : 1
µsec
REC/PB mode
VOLT/DIV : 1 V AC
TIME/DIV : 10
TIME/DIV : 10
µsec
– MAIN SECTION (1/3) –
– MAIN SECTION (3/3) –
– SW SECTION –
– MAIN SECTION (2/3) –
3.6 Vp-p
0.25
µsec
3.8 Vp-p
1.30
µsec
25
µsec
3.6 Vp-p
Note on Schematic Diagram: MAIN SECTION
• 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.
Note:
Note:
The components identi-
Les composants identifiés
fied by mark 0 or dotted par une marque 0 sont cri-
line with mark 0 are cri- tiques pour la sécurité.
tical for safety.
line with mark 0 are cri- tiques pour la sécurité.
tical for safety.
Ne les remplacer que par
Replace only with part
une piéce portant le
number specified.
numéro spécifié.
•
: B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
• Power voltage is dc 3V 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 : PLAY (DPC OFF)
(
no mark : PLAY (DPC OFF)
(
)
: REC
<
>
: PLAY (DPC AUTO)
• 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.
• Signal path.
E
: PB
a
: REC
3.8 Vp-p
0.25
µsec
3
IC701 wh
REC/PB mode
VOLT/DIV : 1 V AC
TIME/DIV : 0.2
TIME/DIV : 0.2
µsec
SECTION 4
DIAGRAMS
1
T101
REC mode
VOLT/DIV : 5 V AC
TIME/DIV : 5
TIME/DIV : 5
µsec
30 Vp-p
20.0
µsec
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