Motorola CP040 Detailed Service Manual page 355

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)
D3_3V
1 A1
3 A2
S441
SWITCH
1 A1
3 A2
S442
SWITCH
1 A1
3 A2
S443
SWITCH
NU NU
1 2
NU NU
3 4
NU NU 3V
5 6
NU NU
7 8
E500
NU NU
BK1005HM471
9 10
NU NU
11 12 C500 C501
1000pF 1uF
NU NU
13 14
NU NU
15 16
NU NU
17 18
NU NU R504
19 20
100
NU NU
21 22
NU NU
23 24 R505
100
NU NU
25 26
NU NU
27 28
J460-1
ACCESSORY/KEYPAD
CONNECTOR
R503
100
5V SW_B+ D3_3V
OPT_DATA_READY
BACKLIGHT
KEYPAD_ROW
KEYPAD_COL
DISPL_COM_DATA_SEL
DISP_ENA
OPT_ENA
VS_CS
VS_INT
B1 2
PTT
B2 4
OPT_BUTTON_1
OPT_BUTTON_2
B1 2
4
B2
FREQ_SEL_0
S440
1
SWITCH PC0
2
PC1 FREQ_SEL_1
8 4
PC3 PC2
C0
C0
B1 2 C1
FREQ_SEL_2
C1
4
B2
9 7
FREQ_SEL_3
SW_B+ 5V 3V
OPT_MIC
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_RETURN
OPT_TX_AUD_SEND
OPT_RX_AUD_SEND_DETECTOR
OPT_RX_AUD_SEND_UNMUTED
AUDIO
OPT_RX_AUD_RETURN
VS_AUDIO_SEL
VS_GAIN_SEL
VS_RAC
R502
100
R501
100
MICROPROCESSOR
UHF2 (438-470 MHz) Controller Interconnect Schematic Diagram PCB No. 8486348Z09-A
PWR_SET PWR_SET
DEMOD
DEMOD
BW_SEL BW_SEL
MOD_OUT MOD_OUT
16_8_MHZ 16_8_MHZ
SPI_CLK
SPI_DATA_OUT
SYNTH_CS
LOCK
RSSI
TP403
TX_ENA
TP404
USWB+ SW_B+ 5V 5R 5T
TP301
SYNTH_CS
LOCK
RSSI
RESET
TX_ENA BATT_CHARGE
RX_ENA RX_ENA
DC_REGULATION
VOLUME VOLUME
ON_OFF ON_OFF
TX_ENA
3-45
3V D3_3V
USWB+
5V
5R
5T
3V