Sony SPP-ID975 - Cordless Telephone User manual

– 1 –
SERVICE MANUAL
SPECIFICATIONS
General
Frequency band (SPP-ID975)
902 – 928 MHz
Frequency band (SPP-ID976)
923.1 – 927.75 MHz
Base phone : 18 µW
Handset : 73 µW
Operating channel
30 channels
Dial signal
Tone, 10 PPS (pulse) selectable
Supplied accessories
AC power adaptor AC-T122 (1)
Telephone line cords (2)
Wall bracket for base phone (1)
Rechargeable battery pack BP-T23 (1)
Handset
Power source
Rechargeable battery pack BP-T23
Battery charging time
Approx. 12 hours
Battery life
Standby:Approx. 7 days
Talk : Approx. 6 hours
Dimensions
Approx. 58 ×177 ×46 mm (w/h/d),
antenna excluded
(approx. 2 3/8 ×7 ×1 13/16 inches)
Antenna: Approx. 72 mm
(approx. 2 7/8 inches)
MassApprox. 270 g
(approx. 9.5 oz), battery included
SPP-ID975/ID976
US Model
SPP-ID975
Canadian Model
SPP-ID976
CORDLESS TELEPHONE
MICROFILM
Photo: SPP-ID975
Base phone
Power source
DC 9V from AC power adaptor
AC-T122
Battery charging time
Approx. 24 hours
Dimensions
Approx. 166 ×63 ×225 mm (w/h/d),
antenna excluded
(approx. 6 5/8 ×2 1/2 ×8 7/8 inches)
Antenna: Approx. 120 mm
(approx. 4 3/4 inches)
MassApprox. 595 g
(approx. 1 lb 9 oz), wall bracket excluded
Design and specifications are subject to
change without notice.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Ver 1.0 1999. 11

SPP-ID975/ID976
– 25 – – 26 –
4-3. SCHEMATIC DIAGRAM — BASE MAIN SECTION (1/2) —
(Page 27)
Caution:
Pattern face side: Partsonthe patternfacesideseen fromthe
(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 Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•U: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supplyfrom externalpowervoltage jack. (BASEPHONE)
• Powervoltage isdc12 Vandfed with regulateddc power
supply from J1008 with 100 Ωin series. (BASE PHONE)
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal. (HANDSET)
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages aretakenwitha VOM(Inputimpedance 10 MΩ).
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.
•: Carbon pattern.
•z: Through hole.
•b: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)

4-4. SCHEMATIC DIAGRAM — BASE MAIN SECTION (2/2) — • Refer to page 41 for IC Block Diagrams.
– 27 – – 28 –
SPP-ID975/ID976
RF UNIT
(BU)
(Page 35)
(Page 26)

SPP-ID975/ID976
4-7. SCHEMATIC DIAGRAM — BASE KEY SECTION —
– 35 – – 36 –
(Page 27)

– 39 – – 40 –
SPP-ID975/ID976
4-9. SCHEMATIC DIAGRAM — HAND MAIN SECTION — • Refer to page 41 for IC Block Diagrams.

16 15 14 13 12 11 10 9
8
SHIFT REGISTER
7654321 GND
PARALLEL DATA
OUTPUT
VCC
QA
A
SQH
RESET SERIAL DATA OUTPUT SHIFT CLOCK LATCH CLOCK OUTPUT ENABLE SERIAL DATA INPUT PARALLEL DATA OUTPUT
QB QC
QD
QE
QF
QG QH
LATCH
LCD1001
J1003, 1004
1
2
4
18
17
3
U1003
U1005
ANT1001
5
6
15
19
7
899
10
11
9
12
13
14
13
9
16
J1001, 1002
+
8 7 6 5
4321
_
+
_
VO2
CD
CF 2 CF 1
V in
GN
D
Vcc VO1
BIAS
CIRCUIT
+
28
12 3 4 5 6 7 8 9 10 11 12 13 14
27 26 25 24 23 22 21 20 19 18 17 16 15
–
+–
+–
+–
+–
R
R
400
BIAS
BACK GROUND
NOISE MONITER
BACK GROUND
NOISE MONITER
ATT CONTROL
AGC
LEVEL DET
LEVEL DET
15mV
VR
VR
VR
VR
RX ATT
DP-DET
VCC
R
R
TX ATT
FILTER
GND
FO
FI
CO
Vcc
HTO(+) HTO(–)
NTI
TXO
TXI
WCO
WCI
MUTE
VCL
CT
CPR
PU1
PLO1
TLO1
TU1
RX0 RX1
RLI2
RLO2
TLO2
TLI2
CPT
V8
SECTION 5
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
• Color Indication ofAppearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
Ref. No. Part No. Description Remark
5-1. HANDSET SECTION
R
Ref. No. Part No. Description Remark
• Accessories and packing materials are
given in the last of this parts list.
• IC Block Diagrams
U1006, 3007 CAT93C86S-LE10
U3001 MC74HC595AF
U3004 MC34118DW
U3005 MC34119D
– 41 – – 42 –
R
1 8
2
3
4
INSTRUCTION
DECODER, CONTROL
LOGIC AND CLOCK
GENERATORS
INSTRUCTION
REGISTER
ADDRESS
REGISTER
DECODER
IOF 1024
(or 2048)
DATA OUT
BUFFER
EEPROM ARRAY 16384 BIT
& (1024X16) or (2048X8)
READ WRITE AMPS
DATA IN/OUT RESISTER
16 (or 8) BITS
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
VCC
7NC
6ORG
5VSS
DO
DI
SK
CS
1 3-038-148-01 KEY (HS), RUBBER (ID975)
1 3-038-148-11 KEY (HS), RUBBER (ID976)
2 3-038-075-01 CASE (FR)
3 3-041-211-01 RUBBER, MICROPHONE
4 3-038-081-01 LENS (HS)
5 3-041-520-01 HOLDER (HS), LCD
6 3-041-537-01 RING, CUSHION RECEIVER
7 3-041-212-01 CUSHION, SPEAKER
8 A-3672-875-A RF UNIT (HS)
9 7-685-548-19 SCREW +BTP 3X12 TYPE2 N-S
10 3-038-076-01 CASE (REAR)
11 3-038-083-01 LID (HS), BATTERY CASE
12 4-356-741-21 SCREW, TAPPING (BIND 2X8)
13 4-356-741-11 SCREW, TAPPING (BIND 2X6)
14 3-038-085-01 KNOB (HS), VOLUME
15 3-041-535-01 FELT, RX
*16 A-3672-876-A HAND MAIN BOARD, COMPLETE (ID975)
*16 A-3672-897-A HAND MAIN BOARD, COMPLETE (ID976)
17 3-038-084-01 DIFFUSER (HS)
18 3-041-536-01 SHEET
19 3-041-547-01 COVER (HS), HOOK
ANT1001 1-754-103-11 ANTENNA
J1001 3-041-208-01 TERMINAL, CHARGE
J1002 3-041-208-01 TERMINAL, CHARGE
J1003 3-041-210-01 TERMINAL, BATTERY
J1004 3-041-210-01 TERMINAL, BATTERY
LCD1001 1-803-832-11 LCD MODULE
U1003 1-542-260-31 MICROPHONE, ELECTRET CONDENSER
U1005 1-505-593-11 SPEAKER (2.8cm)