Sony SPP-874, Service Manual, Page: 23 / 38

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SPP-874/884
5-4. SCHEMATIC DIAGRAM — BASE SECTION — • Refer to page 37 for IC Block Diagrams.
Note:
• All capacitors are in
µ
F unless otherwise noted.
pF:
µµ
F 50 WV or less are not indicated except for
electrolytics and tantalums.
• All resistors are in
Ω
and 1 /
4
W or less unless other-
wise specified.
•
¢
: internal component.
• C : panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc
power supply from external power voltage jack.
• Voltage is dc with respect to ground under
no-signal condition.
• Voltage dc with respect to ground under no-signal
conditions.
• Voltages are taken with a VOM (Input impedance
10 M
Ω
).
Voltage variations may be noted due to normal pro-
duction tolerances.
• Signal path.
N : RX
O : TX
P
: bell
• Abbreviation
E12 : 220-240V area of E model
E92 : 120V area of E model