Read Sony XR-4880 Service Manual online
– 23 –
– 24 –
XR-4880
6-3. SCHEMATIC DIAGRAM — MAIN (2/2) SECTION —
• Refer to page 17 for IC Block Diagrams.
• Refer to page 19 for Printed Wiring Board.
• Refer to page 17 for IC Block Diagrams.
• Refer to page 19 for Printed Wiring Board.
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.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : FM
<
no mark : FM
<
> : TAPE PLAYBACK
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM (MW)
E
: TAPE PLAYBACK
(Page 21, 22)
(Page 27)
Click on the first or last page to see other XR-4880 service manuals if exist.