Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony XR-L500 Service Manual

XR-L500/L500V/L500X
QQ
3 7 63 1515 0
6-1.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : 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.
• Waveforms
– MAIN Board –
TE
L 13942296513
1 IC51 4 (OSCO)
232 ns
2 IC501 qs (OSCOUT)
www
54.4 ns
.
14
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SECTION 6

DIAGRAMS

5 Vp-p
3.3 Vp-p
x ao u163
y
i
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2 9
8
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 /
4
specified.
• C : panel designation.
• A : B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : MW/LW
〈〈 〉〉 : TAPE PLAYBACK
∗
: Impossible to measure
• 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
: MW/LW
E
: TAPE PLAYBACK
L : BUS AUDIO IN
Q Q
3 6 7 1 3 1 5
3 IC501 qh (XOUT)
30.8 µ s
– KEY Board –
4 IC900 uf (OSC)
22.4 µ s
co
.
9 4 2 8
W or less unless otherwise
0 5 8 2 9 9 4 2 8
5 Vp-p
2.5 Vp-p
m
9 9
9 9