Sony MDR-IF630R Service Manual page 10

MDR-IF630R
• See page 15 for IC Block Diagrams.
4-2. SCHEMATIC DIAGRAM
1
2
— 11 —
SOUND MODE
VOICE
NORMAL
Note on Schematic Diagram:
• 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
otherwise specified.
• A : B+ Line.
• Power voltage is dc 2.4 V and fed with regu-
lated dc power supply from battery terminal.
• Voltages are taken with a VOM (Input imped-
ance 10 MΩ).
Voltage variations may be noted due to normal
production tolerances.
• Signal path.
F:
ANALOG
J:
RF
— 12 —
• Waveforms
1
IC101 3
600 mVp-p
358 nsec
VOLT/DIV : 200 mV
TIME/DIV : 200 ns
2
IC201 3
636 mVp-p
434 nsec
VOLT/DIV : 200 mV
TIME/DIV : 200 ns
1 / W or less unless
4