Sony SPP-121, SPP-124 Service Manual
SPP-121/124
SERVICE MANUAL
Ver 1.1 1999. 10
SUPPLEMENT-1
File this supplement with the service manual.
SPP-121 E Model Addition
The E model is added to SPP-121.
This Service Manual Supplement-1 contains only the points which differ from
SPP-121 Canadian model.
For the informations not contained in this manual, please refer to SPP-121/124
service manual (9-870-000-∏) previously issued.
Canadian Model
SPP-121
E Model
SPP-121/124
– 1 –
1. DIFFERENCE OF PART LIST
Page SPP-121 Canadian Model SPP-121 E Model
Ref. No. Part No. Description Remark
* 5 A-3622-320-A BASE MAIN BOARD, COMPLETE
24
31
6 3-038-924-31 CABINET (LOWER) (121)
8 3-039-775-01 SPACER
! 1-418-505-11 ADAPTOR, AC (AC-T56)
1-528-709-21 BATTERY, NICKEL CADMIUM (BP-T16)
3-867-032-31 MANUAL, INSTRUCTION
(ENGLISH,FRENCH) (121)
Part No. Description Remark
* A-3622-375-A BASE MAIN BOARD, COMPLETE
3-038-924-02 CABINET (LOWER)
! 1-475-210-11 ADAPTOR, AC (AC-T56)
1-528-709-31 BATTERY, NICKEL CADMIUM (BP-T16)
3-867-032-51 MANUAL, INSTRUCTION (ENGLISH,
TRADITIONAL CHINESE)
X-3368-367-2 SCREW ASSY (for WALL HOOK)
– 2 –
2. BLOCK DIAGRAM — BASE UNIT SECTION —
ANT1
TELESCOPIC
ANTENNA
BPF1
46MHz
1st
MIX
IN
40 38 36 34
1st
MIX
RX
VCO
MIX
OUT
1st
CF102
10.68MHz
RX
PLL
MIX, IF AMP, DET
IC101 (1/3)
2nd
MIX
2nd
IN
MIX
LOCAL
OSC
2nd
MIX
OUT
CF101
460kHz
TX
PLL
B+ (+5.2V)
FL101
460kHz
RX LEVEL
28
IF
AMP
IF-IN PRE-IN EXP-OUTAF-OUT
32 27
RSSI
QUAD
LPF
DATA
COMP
D-COMP-IN
SPP-121/124
D101
MJ201
EXPANDER
IC101 (2/3)
D205
RECT
LINE TX
DRIVE
Q203
LINE TX
DRIVE
Q202
B+ (+5.2V)
E-MUTE
15 17 18
24
PRE
AMP
EXPANDER
RECEIVER
AMP
RECE-IN R02
R01
20
19
T201
LINE
TRANSFORMER
B+(+5.2V)
LINE
04
J301
DC IN 9V
BPF51
49MHz
CHARGE
TERMINAL
RV101
RSSI Hi
OSC1
X501
4.048MHz
D-COMP-OUT
DIAL MODE
OSC2
910
MODULATION
D51
TX-DATA
H-MUTE
CLK
DATA
STB
SIG-IN
DP
RING
DTMF
PAGE
HOOK-SW
PH202
COMPRESSOR
IC101 (3/3)
FIL-OUT COMP-OUT MIC-IN
9 10
7
6
3
2
1
5
20
30
21
16
17
FIL-IN
SPLATTER
DATA LATCH
CONTROL
CLK7DATA8STB
6
S301
HANDSET LOCATOR
11 14
S302
DIAL MODE
T
P
C-MUTE
COMPRESSOR
LIMITER
SIG-OUT
MIC
AMP
HOOK-SW
DRIVE
Q201
5
Signal path
: TX (To Tel Line)
RING DET
PH201
D203
D204
: RX (From Tel Line)
: bell
VCO1
46424443
L101
RX VT
TX
AMP
Q51
B+ (+9V)
REG
31
IC302
+
–
CHARGE
REG
Q402
CHARGE
LIMITER
Q403
CHARGE
DET
Q401
LO2LO1
X101
10.22MHz
D401
CHARGE
4
TX +B
SWITCH
VOLTAGE
B+ (+5.2V)
Q54
DET
IC301
TX-IN TX-OUT RSSI
1 47 22 233
TX
OSC
Q52
31
L52
TX VT
RESET
Q302
SYSTEM CONTROL
IC501
22
14
12
18
19 4
RSSI H/L RX-DATA
TX +B CTRL
POW-DET
RESET
CHG DET
RX-OUT
VCO-CONT
VCO2
– 3 – – 4 –
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