Sony SPP-ID970 - Cordless Telephone, Руководство по обслуживанию

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SPP-ID970/ID971
US Model
SPP-ID970
Canadian Model
SPP-ID971
SERVICE MANUAL
(ECN-CPE00320)
SUPPLEMENT-2
File this supplement with the service manual.
Subject : Change of Base Main Board
Printed wiring boards and schematic diagram of new type, and changed parts
list are described in this supplement-2.
Refer to original service manual (9-927-617-11) previously issued for the other
information.
When performing service and inspection, check the suffix of the part number of
the main, relay and display boards.
• DISCRIMINATION
- BASE MAIN BOARD (SIDE A) -
U2001
BASE MAIN Board Part No.
Former type : 1-676-044-11
New type : 35-4510-05-00
– 2 –
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams
• 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.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack. (BASE UNIT)
• Power voltage is dc 12 V and fed with regulated dc power
supply from J1006 with 100
Ω
in series. (BASE UNIT)
• Voltage is dc with respect to ground under no-signal
condition.
∗
: 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
For printed wiring boards
•
X
: parts extracted from the component side.
•
z : Through hole.
• : Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Ver 1.2 2000. 10