Motorola Radius CM200 Service Manual page 181

VHF 1–25 W Band 2 PCB 8488977U01 (rev. P9) / Schematics
D3_3V
D3_3V
D3_3V
DNP
VS_INT
VS_CS
VS_RAC
TP405
R444
TEST_POINT
10.K
DNP
DNP
Q415
DNP
R431
DNP
DNP 10.K VR400
C490
6.80
R459
47.K 1.u
R445
10.K
Q414
R422
10.K
Q413
VR402
3.30
R470
10.K
VSTBY
DNP
R466
DNP
R467
R468 DNP
R469 DNP
D3_3V
C422 C423
1n 100n
15
Q0
PROG_OUT-ALARM_4
11 1
SPI_CLK CLK_S Q1 PROG_IO-P8_O
12 2
CLK_L Q2
PROG_IO-P12_O
13 3
EN_OE Q3
PROG_IO-P14_O
10 4
RESET Q4 VS_AUDIO_SEL
5
U405 Q5
6
MC74HC595A Q6
7
Q7 VS_GAIN_SEL
14 9
C421 SERIN SEROUT
SPI_MOSI
22.n
GND
8
Q403
PROG_OUT-ALARM_4
R401
2.7K
D3_3V
BOOT_EN_IN_CH
R436 R457
33.K 3.3K
Q412
ACCESS_PTT
SCI_CH
R421
220.
D3_3V
R435
R456
Q411
33.K
3.3K
PROG_IN-P6_I
D3_3V
R434
33.K
Q410
PROG_IO-P8_I
PROG_IO-P8_O
D3_3V
R433
33.K
R454
Q409
3.3K
PROG_IO-P12_I
PROG_IO-P12_O
D3_3V
R432
33.K
R453
Q408
3.3K
PROG_IO-P14_I
PROG_IO-P14_O
VHF2 (146
FILT_SW_B+
R460
1.5K
Q401
MIC_SENSE
MIC_PTT
R461
220.
R455
R440
3.3K
10.K
R406
R407
Q416
R405
R404
R403
R402
Q404
Q405
174 MHz) 1 25 W Microprocessor and Controller Circuits (Sht 2 of 2)
– –
4-17
D3_3V
R458
3.3K
D401
HOOK_CH
R429
100.K
C418
R430
1n
39.K
MIC_PTT_CH
D402
C417
1n
0.
EXT_ALARM_OUT
PROG_O-ACC_C_4
0. EXT_MIC_PTT
PROG_I-ACC_C_3
0.
PROG_IN
PROG_I-ACC_C_6
0.
PROG_I/O
PROG_IO-ACC_C_8
0. PROG_I/O
PROG_IO-ACC_C_12
0.
PROG_I/O
PROG_IO-ACC_C_14
73D02968C63-0
SHEET 8 OF 8