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MICROFILM
SERVICE MANUAL
CORDLESS TELEPHONE
US Model
SPP-SS951
· SPP-SS951 is almost the same as SPP-SS950 US Model.
This service manual contains printed wiring boards, schematic diagrams, exploded views
and electrical parts list of this model.
Please refer to SPP-SS950 service manual (9-925-727-
) previously issued for other
information.
TABLE OF CONTENTS
1.
DIAGRAMS
1-1. Printed Wiring Board ­ BASE UNIT Section ­ ............
3
1-2. Schematic Diagram ­ BASE UNIT Section ­ ..............
5
1-3. Schematic Diagram ­ HANDSET Section ­ .................
8
1-4. Printed Wiring Board ­ HANDSET Section ­ .............. 11
2.
EXPLODED VIEWS ................................................ 13
3.
ELECTRICAL PARTS LIST ............................... 15


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SPP-SS951
Ref. No.
Location
­ 3 ­
­ 4 ­
1. DIAGRAMS
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.
Note:
· X : parts extracted from the component side.
· b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
1-1.
PRINTED WIRING BOARD ­ BASE UNIT Section ­
· Semiconductor Location
­ BASE MAIN Board ­ (Side B)
D109
G-2
D110
F-3
D652
I-3
D653
I-3
IC601
C-5
Ref. No.
Location
Ref. No.
Location
D100
B-5
D101
G-6
D102
D-7
D103
D-7
D104
G-6
D105
I-5
D108
E-2
Q101
G-6
Q102
I-6
Q171
H-4
Q651
I-3
Q750
C-5
Q751
B-3
· Semiconductor Location
­ BASE MAIN Board ­ (Side A)
IC951
B-3
Q103
G-5
Q652
H-3
Q653
H-2
Q952
I-3
Ref. No.
Location
Ref. No.
Location
D654
I-1
IC101
I-5
IC602
G-3
IC701
F-2
IC751
D-2


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­ 7 ­
4 Vp-p
9.6 MHz
· Waveform
1 IC751 (¶ (XTALI)
Note:
· 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 and 1/4 W or less unless otherwise
specified.
· 2 : nonflammable resistor.
· C : panel designation.
· U : B+ Line.
· Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack (J601).
· Power voltage is dc 12 V and fed with regulated dc power
supply from modular jack (MJ101).
· Voltages and waveforms are dc with respect to ground un-
der no-signal conditions.
no mark : Talk
· Voltages are taken with a VOM (Input impedance 10 M).
Voltage variations may be noted due to normal production
tolerances.
· Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
· Circled numbers refer to waveforms.
· Signal path.
N : RX
O : TX
P : bell
Note: The components identified by mark
! or dotted line
with mark
! are critical for safety.
Replace only with part number specified.


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­ 8 ­
2.9 Vp-p
9.6 MHz
· Waveform
1 IC501 (¶ (XTALI)
Note:
· 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 and 1/4 W or less unless otherwise
specified.
· C : panel designation.
· U : B+ Line.
· Power voltage is dc 3.6 V and fed with regulated dc power
supply from external power voltage jack (CN301).
· Voltages and waveforms are dc with respect to ground un-
der no-signal conditions.
no mark : Talk
· Voltages are taken with a VOM (Input impedance 10 M).
Voltage variations may be noted due to normal production
tolerances.
· Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
· Circled numbers refer to waveforms.
· Signal path.
N : RX
O : TX
P : bell


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SPP-SS951
­ 11 ­
­ 12 ­
1-4.
PRINTED WIRING BOARD ­ HANDSET Section ­
· Semiconductor
Location
­ HAND MAIN Board ­
(Side A)
D403
C-1
D501
C-5
Q504
C-2
Q505
C-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.
Note:
· X : parts extracted from the component side.
· b : Pattern from the side which enables seeing.
· b : Pattern on the side which is seen. (Carbon pattern).
(The other layers' patterns are not indicated.)
Ref. No.
Location
· Semiconductor
Location
­ HAND MAIN Board ­
(Side B)
D301
B-11
D302
B-10
D303
A-11
D304
A-10
D305
A-10
D306
A-9
D308
A-9
D401
C-12
D402
C-12
D404
A-10
D505
B-11
IC301
B-9
IC401
A-6
IC501
C-4
IC502
C-2
Q301
B-9
Q302
B-9
Q303
C-8
Q502
C-12
Q503
B-11
Ref. No.
Location