Sony SPP-901.pdf

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SPP-901
SERVICE MANUAL
SPP-901
Canadian Model
SPECIFICATIONS
CORDLESS TELEPHONE
MICROFILM
14860923.090.png
SPP-901
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – BASE UNIT Section –
C99
QUAD-VOLTAGE
MIX, OSC, LIMITER AMP, DET
U1
16
R40
926.25MHz
L12
10.7MHz
DEMOD
AUDIO LEVEL
926MHz
MIX
OUT
F5
10.7MHz
LIM1
IN
LIM1
OUT
F4
10.7MHz
LIM2
IN
DEM
OUT
FIL2
IN
FIL2
OUT
PRE
IN
EXP
OUT
B.P.F.
F2
RF AMP
Q2
SAW
FILTER
F3
A1IN
LIMITER
AMP
LIMITER
AMP
DE-
MODULATOR
BUFFER
U5 (1/4)
DE-
EMPHASIS
EXPANDER
CIRCUIT
+
ROIN
3
MIXER
5
9
22
20
15
2
1
23
20
19
–
RO1
18
ANT1
(ANTENNA)
+
LOW-PASS
FILTER
PREAMP
RO1 AMP
LOCAL OSC
BUFFER
RSSI
LOW-PASS
FILTER
U5 (2/4)
COMPRESSOR, EXPANDER, NOISE GATE
U4
–
RO2
17
+
RO2 AMP
26
10
903MHz
LOW-PASS
FILTER
MIC
AMP
B.P.F.
F1
TX AMP
Q1
FIL1
OUT
FIL1
IN
DATA/AUDIO
ADDER
U5 (4/4)
COMP
OUT
TX VCO
Q8
3
4
+
PRE
EMPHASIS
5
+
COMPRESSOR
CIRCUIT
MIC IN
11
CARRIER
DETECT AMP
Q3, 4
R39
RX VCO
Q9
MOD
DEVIATION
6
15
16
18
PLL
U10
RX DATA 25
TX DATA 24
14
CP2
RX SYSTEM
PLL CIRCUIT
FIN2
16
MUTE
16
3
CP1
TX SYSTEM
PLL CIRCUIT
FIN1
1
DTMF
LOW-PASS FILTER
U5 (3/4)
CONTROL
CIRCUIT
REFERENCE
DIVIDER
SYSTEM CONTROLLER
U6
C56
D3
LINE
T1
LINE
TRANSFORMER
D1 – 4
RECT
7
6
8
11
TX
FREQUENCY
D1
D3
OSC
Q10
26
OSC2
HOOK ON/OFF
U1
D2
D4
27
OSC1
LED DRIVE
Q5
J1
X1
4MHz
LINE
10
PLL EN
OFF HOOK 17
RINGER DET 20
RINGER
DETECT
U2
13
11
12
9
EEP/PLL CLK
EEP/PLL DATA
EEP DI
EEP CS
3 2 4 1
ATE
23
ATE
EEPROM
U7
CRADLE DET
19
CRADLE/CHARGE
DETECT
Q6, 7
+
CHARGE
TERMINAL
D2
CHARGE
–
S1
DIAL MODE
TONE
22
TONE/PULSE
V REG B+
(RX PWR B+)
+5V
REGULATOR
U3
PULSE
TX PWR B+
B+ SWITCH
(FOR TX SYSTEM)
Q11
J2
DC IN 9V
+
–
• SIGNAL PATH
: RX
: TX
: BELL
21 PAGE
TX ENABLE
15
S1
HANDSET
LOCATOR
RESET
1
RESET SIGNAL
GENERATOR
Q8, 9
05
– 11 –
– 12 –
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SPP-901
5-2. BLOCK DIAGRAM – HANDSET Section –
C25
S19
L (LOW)
VOL
QUAD-VOLTAGE
MIX, OSC, LIMITER AMP, DET
U1
M (MEDIUM)
16
H (HIGH)
R113
18
DEMOD
AUDIO LEVEL
903.65MHz
L2
10.7MHz
903MHz
MIX
OUT
F4
10.7MHz
LIM1
IN
LIM1
OUT
F5
10.7MHz
LIM2
IN
DEM
OUT
FIL2
IN
FIL2
OUT
PRE
IN
EXP
OUT
B.P.F.
F1
RF AMP
Q2
SAW
FILTER
F3
A1IN
LIMITER
AMP
LIMITER
AMP
DE-
MODULATOR
BUFFER
U5 (4/4)
DE-
EMPHASIS
EXPANDER
CIRCUIT
ROIN
U8
(SPEAKER)
3
MIXER
5
9
22
20
15
2
1
23
20
19
–
RO2
+
–
ANT2
(ANTENNA)
17
LOW-PASS
FILTER
PREAMP
+
RO1 AMP
LOCAL OSC
BUFFER
RO2 AMP
RSSI
LOW-PASS
FILTER
U5 (2/4)
COMPRESSOR, EXPANDER, NOISE GATE
U7
26
10
926MHz
LOW-PASS
FILTER
MIC
AMP
B.P.F.
F2
TX AMP
Q3
FIL1
OUT
FIL1
IN
DATA/AUDIO
ADDER
U5 (3/4)
COMP
OUT
TX VCO
Q1
3
4
+
PRE
EMPHASIS
5
+
COMPRESSOR
CIRCUIT
MIC NF
10
U9
(MIC)
R119
RX VCO
Q8
MOD
DEVIATION
BUFFER
Q1
6
15
16
PLL
U3
RX DATA 25
TX DATA 24
14
CP2
RX SYSTEM
PLL CIRCUIT
FIN2
16
MUTE
19
SYSTEM CONTROLLER
U3
BEEP 20
BUZZER DRIVE
Q14, 17
U4
(BUZZER)
CP1
FIN1
TX SYSTEM
PLL CIRCUIT
3
1
CONTROL
CIRCUIT
REFERENCE
DIVIDER
LIGHT LED 18
LED DRIVE
Q2
D1 – 4
(KEY BACK LIGHT)
C92
TALK/BATT LED
17
B+
(MCU PWR)
7
6
8
11
D5
TALK/BATT LOW
TX
FREQUENCY
OSC
Q12
26
OSC2
ATE
21
ATE
27
OSC1
CRADLE
DETECT
Q15
X1
4MHz
CRADLE DET
23
+
CHARGE
TERMINAL
12
PLL EN
REGULATOR,
RESET SIGNAL GENERATOR, BATTERY DETECT
U11
–
13
11
PLL CLK
D7
PLL DATA
MCU PWR B+
3
OUTPUT
FEED
BACK
REGULATOR
INPUT
15
B+ SWITCH
(FOR ANALOG SYSTEM)
Q18
14
ERROR
AMP
V-ANA PWR B+
SHUT
DOWN
TX ENABLE
15
MUTE
SHUT DOWM
COMPARATOR
5
RECHARGEABLE
BATTERY PACK
(BP-T23)
B+ SWITCH
(FOR TX SYSTEM)
Q13
TX PWR B+
S1 – S18
6
ERROR
DROP OUT
DETECT AMP
RX PWR B+
B+ SWITCH
(FOR RX SYSTEM)
Q16
COMP OUT
AUXILLARY
COMPARATOR
COMP IN
10
11
KEY MATRIX
(SEET KEY)
RX ENABLE 16
1.23V
Q20
WATCH DOG TIMER
COMPARATOR
U5 (1/4)
• SIGNAL PATH
: RX
: TX
: BELL
IRQ
2
SWITCHING
Q19
RESET 1
LOW BATT 22
05
05
– 13 –
– 14 –
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SPP-901
5-4. PRINTED WIRING BOARDS – BASE UNIT Section –
– 17 –
– 18 –
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SPP-901
5-5. SCHEMATIC DIAGRAM – BASE RF Board – • See page 29 for IC Block Diagrams.
(Page 21)
– 19 –
– 20 –
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