SPP-933/934
(Pege 20)
(Pege 20)
05
• SIGNAL PATH
: RX
: TX
: BELL
A
B
SP701
(SPEAKER)
+
+
+
+
+
+
SPEED DIAL
SPEAKERPHONE
S704
PGM
S713
FLASH
S714
S705
S709
0 OPER
#
TONE
S715
S716
S717
4 GHI
5 JKL
6 MNO
S706
S707
S708
7 PQRS
8 TUV
9 WXYZ
S710
S711
S712
1
2 ABC
3 DEF
S701
S702
S703
INTERCOM
S718
HOLD
S719
RINGER
S2
REDIAL/PAUSE
SPEAKER MUTE
Q16
TX DET
COMPRESSOR
TX/RX DET
COMPRESSOR
ATT
CONTROL
RECEIVER
ATT
TRANSMIT
ATT
RX LINE MUTE
Q7
TX LINE MUTE
Q3
HIBRID AMP
Q4
RECT
D14, 15, 17, 18
PARA DETECT
IC9, Q20, 21
AF AMP
IC4 (1/2)
AF AMP
IC4 (2/2)
BUFFER
IC6 (1/2)
BUFFER
IC6 (2/2)
4
27
5
7
24
13
26
3
10
9
19
15
17
VOLUME
TX DET
RX DET
TXO
RXI
TLI
RLI
XDI
VLC
RXO
TXI
VOICE SPEAKERPHONE
IC5
LINE
J1
T1
LINE
TRANSFORMER
MIC
MC1
MIC MUTE
Q10
PEAK
LIMITER
AF AMP
Q12
SPEAKER
AMP
MIC
AMP
MCI
SKO
MCO
SKI
AGC
VR1
1
DTMF
X0
X1
BELL HI
BELL LOW
TONE/PULSE
INT LED
SP LED
LINE LED
34
SP MUTE1
38
BELL OUT
44
RING VOL
46
SP MUTE2
15
MIC MUTE
45
LINE MUTE
22
PARADET
10
RLCONT
37
BELL IN
SYSTEM CONTROLLER
IC8 (2/2)
27 – 31
KEY MATRIX
S701-719
ROW0 – ROW4
23 – 26
COL0 – COL3
35
33
32
40
42
41
6
5
X2
3.579545MHz
H
L
OFF
DIAL MODE
S1
INTERCOM
D752
SPEAKERPHONE
D753
CHARGE
D751
LINE
D754
PULSE
TONE
RINGER DETECT
IC2
HOOK ON/OFF
RELAY DRIVE
Q18
39
2
16
21
VOLTAGE DETECT
IC7
+3V REGULATOR
Q14
+6V REGULATOR
Q17
+8V REGULATOR
Q19
CHARGE CONTROL
Q13
CHARGE DETECT
Q11
B+ SWITCH
(FOR TX SYSTEM)
Q9
RESET SIGNAL
GENERATOR
Q15
+
–
–
+
J2
DC IN 9V
CHARGE
TERMINAL
B+ (8V)
B+ (3V)
TX B+
(3V)
B+ (5V)
D7
D10
SYSTEM CONTROLLER
B+ (5V)
PWR OFF
RESET
CHG CONT
CHG DET
5-2.
BLOCK DIAGRAM – BASE UNIT Section (2/2) –
– 21 –
– 22 –
Summary of Contents for SPP-933 - 900mhz Cordless Telephone
Page 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...
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Page 27: ... 35 SPP 933 934 5 10 SCHEMATIC DIAGRAM BASE KEY Section Page 32 ...
