Motorola HT Series Service Manual page 117

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C407
0.1uF
URX_SND
RX_AUD_RTN
R445
24K
Vdda
DEMOD
DACRx
VS_GAINSEL
VS_AUDSEL
VOX
C430
0.1uF
FLAT_RX_SND
C414
0.1uF
TP410
1
C408
C409
100pF
0.1uF
Vdda
C410
R475
0.1uF
0
R425
30K
C479
0.1uF
C411
0.1uF
R449
24K
1 36
VDDA TXRTN
2 35
DISC GCB3
3 34
GNDA CLK168
4 33
DACU VDDD
5 32
DACR VDDCP
6 U404 31
DACG GNDD
7 63A53 30
VOX GNDDO
8 29
F1200
PLCAP
9 28
SQIN SYN
10 27
UIO
VDDSYN
11 26
VDDDAC NC
12
25
SQCAP PLCAP2
C415 C452 C451
0.1uF 1uF .022uF
C420 C421
.01uF 0.1uF
R400
47K
# $
TP406
1
C401
0.1uF
INT_EXT_Vdd
R448
10K
R447
1.5MEG
MECH_SWB+
C480
10uF
TX_AUD_RTN
RED_LED
C419
16.8MHz
.01uF
F1200
SYN
C416
0.1uF
Vdda
C422
0.1uF
R413
0
Vddd
5V
C427 C428
100pF 0.1uF
R429
10K
EE_CS
U407
X25128-2.7
8
6
SCK
CS 1
3 4Kx8 BIT 2
WP
MISO
SO
HOLD 7 EEPROM
SI 5
4
4V_3.3V
R405 R402
0
NU
SWB+
Q400
Vddd
3 2
C400
R401 .01uF
1
0
U400
LP2951ACMM-3.3 C402 C403
0.1uF 2.2uF
1
8
INPUT OUTPUT
7 5
FEEDBACK
ERROR
3 2
SHUTDOWN SENSE
6
R407 VTAP
68K
R476
330K
1
RESET
R416
10K
R451
15K
R452
2
100K
Q403
R455
R456
CR440
1 NU
0
3
R453
NU 2
R454 3
1
NU
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Freq. Range Board Number
403-470 MHz 8480450Z13
450-527 MHz 8485641Z06
136-174 MHz 8486062B16
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BATT_CODE
Vddd
UNSWB+
R406 R427
2.7K
75K
3 4
K1 A1 BATT_DATA_IN
2 5
K2 A2
1 K3 6
A3
Q405
4
CR412
2 3
OFF_BATT_DATA_OUT
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