Note For Printed Wiring Board And Schematic Diagrams - Sony WM-FX522 Service Manual

6-3.

NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicates side identified with part number.
• : internal component.
f
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
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 1 / W or less unless otherwise
4
specified.
• : internal component.
f
• C : panel designation.
• A : B+ Line.
• H : adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 1.5V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
no-signal (detuned) conditions.
no mark : PLAYBACK
( ) : FM
〈〈 〉〉 : AM
• Voltages are taken with a VOM (Input impedance 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
: FM
f
: AM
E
: PLAYBACK
• Waveforms
1 IC701 ua (XOUT)
1.4 Vp-p
13.3 µs
2 IC801 5 (LX) (Playback mode)
3.1 Vp-p
13.5 µs
3 Q405 (Collector) (FM/AM mode)
1.7 Vp-p
306 ns
4 Q405 (Emitter) (FM/AM mode)
0.9 Vp-p
306 ns
5 Q405 (Base) (FM/AM mode)
0.3 Vp-p
306 ns
17 17
WM-FX522