Motorola Commercial CM Series Service Information page 81

UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics
D3_3V
R444
10.K
DNP
DNP
DNP
Q415
R431
DNP
VR400
DNP 10.K
6.80
C490
R459
47.K
1.u
D3_3V
R445
10.K
TP408
TEST_POINT
Q414
D3_3V
R422
10.K
Q413
VR402
R470
3.30
10.K
DNP IN MARLIN+
R466 0.
R467 0.
VS_INT
R468 0.
VS_CS
0.
R469
VS_RAC
D3_3V
C422 C423
100n
120.p
16
VCC 15
Q0
11
1
SPI_CLK CLK_S Q1
12 2
CLK_L Q2
13 3
EN_OE Q3
4
10
RESET Q4
5
Q5
U405
6
Q6
MC74HC595A
7
Q7
14
9
SPI_MOSI SERIN SEROUT
GND
C421
8
22.n
DNP IN NON-DISPLAY MODELS
R401 R460
Q403
2.7K
1.5K
PROG_OUT-ALARM_4
TP405
Q401
TEST_POINT
D3_3V
BOOT_EN_IN_CH
R436
R457
33.K Q412
3.3K
ACCESS_PTT
SCI_CH
R421
220.
D3_3V
R435
R456
33.K
Q411 3.3K
PROG_IN-P6_I
D3_3V
R434
33.K
R455
Q410
3.3K
PROG_IO-P8_I
Q416
VSTBY
PROG_IO-P8_O
D3_3V
R433
33.K
R454
Q409
3.3K
PROG_IO-P12_I
Q404
PROG_IO-P12_O
D3_3V
PROG_OUT-ALARM_4 R432
PROG_IO-P8_O 33.K
PROG_IO-P12_O
PROG_IO-P14_O
R453
Q408
3.3K
PROG_IO-P14_I
VS_AUDIO_SEL
VS_GAIN_SEL
Q405
PROG_IO-P14_O
UHF1 (403-440MHz) Microprocessor and Controller Circuits (Sht 2 of 2)
FILT_SW_B+
D3_3V
R458
3.3K
D401
HOOK_CH
R429
100.K
MIC_SENSE
C418
120.p
R430
39.K
MIC_PTT
MIC_PTT_CH
R461
220.
D402
R440 C417
10.K
120.p
R406 0. EXT_ALARM_OUT
PROG_O-ACC_C_4
R407 EXT_MIC_PTT
0.
PROG_I-ACC_C_3
R405 PROG_IN
0.
PROG_I-ACC_C_6
R404
0. PROG_I/O
PROG_IO-ACC_C_8
R403 0. PROG_I/O
PROG_IO-ACC_C_12
R402 0. PROG_I/O
PROG_IO-ACC_C_14
73D02968C74-O
SHEET 8 OF 8
4-41