Schematic Diagram (Main Section) - Sony ICD-R100PC Service Manual

4-4. SCHEMATIC DIAGRAM (MAIN SECTION)

r Refer to page 21 for IC Block Diagrams.
– 13 – – 14 –
Waveforms
r
1
IC503 4
2
IC102 3
3
IC102 4
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
specified.
• U : B+ Line.
• 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 : REC
(
• Voltages and current are taken with a VOM (Input imped-
ance 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 produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
L : REC
– 15 –
ICD-R100PC
4.1 Vp-p
91.4 kHz
VOLT/DIV : 1 V AC
TIME/DIV : 2 µsec
3.5 Vp-p
REC 11 kHz
PLAY 13 kHz
VOLT/DIV : 1 V AC
TIME/DIV : 20 µsec
1.7 Vp-p
14kHz
VOLT/DIV : 5 V AC
TIME/DIV : 20 µsec
1 / W or less unless otherwise
4
) : PLAY
: PLAY
– 16 –