Motorola CM140 Service Information page 46

4-6
D3_3V
FILT_SW_B+
FILT_SW_B+
D3_3V TX_EN SPI_CLK
DIGITAL
VHF1 (136-162MHz) Main Circuit (Sht 1 of 2)
SPI_MOSI SPI_MISO
RX_EN
LOC_DIST
RSSI
SYNTH_CS
SYNTH_LOCK
ASFIC_CS
CH_ACT
SQ_DET
LSIO
HSIO
F1200
uP_CLK
VS_AUDIO_SEL
RESET
VS_INT
VS_RAC
VS_CS
VS_GAIN_SEL
OPT_EN_OPBD
OPT_DATA_R_OPBD
DISPLAY_CS_CH
SHIFT_R_CS
COMM_DATA_SEL_CH
KEYPAD_COL_CH
KEYPAD_ROW_CH
SCI_CH
BOOT_EN_IN_CH
MIC_PTT_CH
HOOK_CH
C603 C604 C605 C606
1n 1n 1n 1n
Place capacitors near J2
VOL_INDIRECT
VSTBY
ONOFF_SENSE
R615
EMERGENCY_SENSE
VOX
BATT_SENSE
Accessory Connector
EXT_ALARM_OUT PROG_O-ACC_C_4
PROG_I-ACC_C_3
EXT_MIC_PTT
PROG_I-ACC_C_6
PROG_IN
PROG_IO-ACC_C_8
PROG_I/O
PROG_I/O PROG_IO-ACC_C_12
PROG_IO-ACC_C_14
PROG_I/O
C633 C632 C630 C629
1n 1n 1n 1n
J3 - DNP
J3-12
12 SERIAL CLOCK
J3-13
13
SERIAL DATA SEND
J3-14
14 SERIAL DATA RETURN
J3-27
27 VOICE STORAGE INT
Option Board Connector
J3-28
28 VOICE STORAGE RAC
28 pins connector
J3-23
23 VOICE STORAGE CS
J3-26
26
VOICE STORAGE GAIN SELECT
J3-22
NC ELP ONLY 22 KEYPAD ROW
J3-11
11 OPTION BOARD ENABLE
J3-10
10 DATA READY/REQUEST
J3-19
NC ELP ONLY 19 DISPLAY DRIVER CHIP SELECT
J3-21
NC ELP ONLY 21 DISPLAY_DRIVER_COMMAND/DATA_SEL
J3-24
ELP ONLY NC 24 KEYPAD COLUMN
J3-16
16 PUSH TO TALK
J2-1
1 DISPLAY_DRIVER_CS_EN
J2-6
6 SHIFT_REG_CS
J2-3
3 DISPLAY_DRIVER_COMMAND/DATA_SEL
J2-9
9 KEYPAD_COLUMN HANDSET_RX_AUDIO
J2-8
8
KEYPAD_ROW
J2-17
17 SCI_PROGRAMMING
J2-5
5 SPI_MOSI
J2-10
10
BOOT/RESET DISPLAY_DRIVER_RESET
J2-16
J2-21 J2-22
16 MIC_PTT
J2-13 G1 G2
13 HOOK
DNP DNP
Control Head Connector
C607 C608 C609 C610 C611 C612
1n 1n
1n 1n 1n 1n
P1-4 P1-1
4 1
P1-3 P1-16
3 16
100. P1-6 P1-2
6 2
P1-10
10
P1-8 P1-5
8 5
P1-12 P1-11
12 11
P1-14 P1-13
14 13
P1-7 P1-15
7 15
P1-9
9
Accessory Connector
Place capacitors near J2
C628 C631 VR699 VR698
VR696 VR695
1n 1n 20.0 VR697
20.0
20.0 20.0
VHF1 1-25W PCB 8486672Z01 / Schematics
D3_3V
J3-25
VOICE STORAGE AUDIO SELECT 25
J3-17
17
DIGITAL 3.3 VOLT SUPPLY
J3-8
ANALOG 3 VOLT SUPPLY 8 NC ELP ONLY
J3-15
RESET 15
J3-7
EXTERNAL MIC 7
J3-1
TX AUDIO SEND 1
J3-3
3
TX AUDIO RETURN
J3-5
POST-LIMITER FLAT TX AUDIO RETURN 5
J3-2
DETECTOR AUDIO SEND 2
J3-4
UNMUTED RX AUDIO SEND 4
J3-6
RX AUDIO RETURN 6
J3-20
BACKLIGHT 20 NC ELP ONLY
J3-9
GND 9
J3-18
GND 18
9V
D3_3V
J2-12
9.3V 12
J2-7
D3_3V 7
J2-18
18
J2-15
15
MIC_AUDIO
J2-20
INT_SPKR- 20
J2-19
INT_SPKR+ 19
J2-2
2
J2-4
SPI_CLK 4
J2-11
GND 11
J2-14
GND 14
DNP
R600
0.
C602 C613 C614 C615 C616 C617 C618 C619
1n 1n 1n 1n 1n 1n 1n 1n
Place capacitors near J2
FILT_SW_B+
Place capacitors near J2
VR692
20.0
R601 330.0
C662
1n
220.
R610
C624
1n
C627 C626 C625 C623
1n 1n 1n 1n
C622 C621 C620
1n 1n 1n
VR694
20.0
20.0
VR692
20.0
VR693
33.
C678
100.n