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80 mV
RFUNIT
MOD
1
VB
2
RXB
3
UNLOCK
4
DATA
5
CK
6
PLLRST
7
TXB
8
GND
9
SQL
10
AF
11
RX Signal
AGC
12
AGND
13
ANT
14
Input
1 kHz TONE
5 kHz devi.
ANT
3.3n
L801
C811
SQ
NC
GT
GR
J802
NC
J201
NC
J202
NC
J203
NC
J204
NC
J208
NC
J210
NC
J213
NC
J214
NC
TX Signal
VR401
350 mV
50K
R424
8.2K
R425
Q401
AF_AMP
R407
82K
C402
K0.1
4.3V
D801
R204
TXL_MU
17
AC_D
18
SQL
19
P_UL
20
SP_ON
21
MC_MU
22
SP_MU
23
(TCHG)
24
(UCHG)
NC
R901
25
OPT1
0
R902
26
OPT2
NC
27
R903
OPT3
NC
R904
28
OPT4
29
SPV0
30
SPV1
31
SPV2
32
SPV3
TEST
TA
TC
C403
R408
10K
R409
230 mV
R417
R418
15K
C418
C419
K0.1
25V4.7
+
-
220 mV
R413
33K
R218
10K
NC
IC201
MN150832BB1
DC
NC
D903
DD
NC
D904
DE
NC
D905
DF
NC
D906
DG
NC
D907
DH
NC
D908
280 mV
C404
0.1
4.7K
C416
1800P
15K
COR
SFC2
SFC1
Splatter
-
Amp
EXP
+
PREAmp
REG
LINE
VCC VREG
Amp
VCC
GND
R411
C407
33K
K0.1
R219
4.9V
2.2K
64
SYNC
63
RST
62
DTMF
61
SIRQ
60
VDD
X201
59
OSC2
58
OSC1
57
VSS
56
IRQ
55
HOOK
54
BE_CT2
53
BE_CT1
52
BE_CLK
51
P_DOWN
50
P_DAT
49
P_CLK
R234
1K
S201
R235
1K
LCT
LOCATOR
50 mV
C410
0.033
-
+
COMP
RCVAmp
-
+
Data Amp
3.3V
340 mV
R429
330
5.4V
3.573M
R211
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