Diagrams; Notes For Printed Wiring Board And Schematic Diagram - Sony XR-1800R Service Manual

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5-1.

NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

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
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.
• 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
• Abbreviation
G : German model.
SE : South European model.
TE
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SECTION 5

DIAGRAMS

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Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : internal component.
¢
• b : Pattern from the side which enables seeing.
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– 17 –
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0 5 8 2 9 9 4 2 8
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