Sony SPP-111 - Cordless Phone Page, Руководство по обслуживанию, Страница: 20 / 32

SPP-111
5-4. PRINTED WIRING BOARD — BASE UNIT SECTION —
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
¢ : internal component.
• b
: Pattern from the side which enables seeing.
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
W or less unless otherwise
specified.
• ¢ : internal component.
•
2
: nonflammable resistor.
• 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.
• Power voltage is dc 12 V and fed with regulated dc power
supply from MJ201 with 100
Ω
in series.
• Voltage is dc with respect to ground under no-signal
condition.
no mark : TALK
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
N : TX (To Tel Line)
O : RX (From Tel Line)
P : bell
D1 C-2
D51 G-2
D101 D-8
D201 B-9
D203 B-8
D204 B-8
D205 A-8
D206 B-2
D207 B-1
D208 G-9
D301 C-7
D401 B-5
D501 F-7
IC101 E-4
IC301 G-10
IC302 D-8
IC501 F-8
PH201 C-8
PH202 B-7
Q51 E-1
Q52 F-2
Q54 E-2
Q201 B-6
Q202 D-6
Q203 A-7
Q302 F-10
Q401 A-2
Q402 B-5
Q403 B-4
• Semiconductor
Location
Ref. No. Location
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