Circuito Principal 1-25 W Uhf2 (438-470 Mhz) (Hoja 2 De 2) - Motorola EM200 Serie Manual De Servicio

Esquemas eléctricos de la tarjeta de circuito impreso 8488978U01 del radio UHF 1-25 W banda 2 (rev. P9)
(SOURCE)
3V
SPI_MOSI
SPI_CLK
ASFIC_CS
CH_ACT
SQ_DET
LSIO
HSIO
F1200
uP_CLK
VS_AUDIO_SEL
RESET
VS_MIC
TX_AUDIO_SEND_OPT_BRD
TX_AUDIO_RETURN_OPT_BRD
POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BRD
DETECTOR_AUDIO_SEND_OPT_BRD
UNMUTED_RX_AUDIO_SEND_OPT_BRD
RX_AUDIO_RETURN_OPT_BRD
HANDSET_RX_AUDIO_CH
MIC_AUDIO_CH
5V_CH
VOL_INDIRECT
VSTBY
ONOFF_SENSE
EMERGENCY_SENSE
VOX
BATT_SENSE
SPKR-
SPKR+
EXTERNAL_MIC_AUDIO_ACCESS_CONN
IGNITION
FLAT_TX_AUDIO_INPUT_ACCESS_CONN
RX_AUDIO_OUTPUT_ACCESS_CONN
EMERGENCY_ACCES_CONN
(SOURCE) (SOURCE)
5V
3V D3_3V
D3_3V 5V COMP_B+
DC & AUDIO
PA_BIAS
PWR_SET
FILT_SW_B+
(SOURCE)
FILT_SW_B+
9V
(SOURCE)
9V
5V
5V
SPI_CLK
SPI_MOSI
SYNTH_CS
SYNTH_LOCK
16.8MHz 16.8MHz
(SOURCE)
MOD_OUT MOD_IN
9R
9R
RSSI
RX_EN
DEMOD DEMOD
BW_SEL BW_SEL
LOC_DIST
CONTACTS FOR PA CLIP
B+ M9
PLTD_NUT
P2-1
1
P2-2
TP2
1 2
TEST_POINT
TP3
1 DC Connector
TEST_POINT
FILT_SW_B+
POWER CONTROL
DET_VFWD INTEGRATOR
3V 9R
3V
9R TX_INJ
BOARD HOLES
FGU
M1 M2
PLTD_HOLE3_5x6_0_TRIMMED
PLTD_HOLE3_5x7_0
M3 M4
RX_INJ
PLTD_HOLE3_5x7_0 PLTD_HOLE3_5x7_0_TRIMMED
5V 9V VCC
5V 9V 3V RX_INJ RX
M8
PLTD_HOLE3_5x7_0_TRIMMED
RX
PEDS FOR GND CONTACTS
PLTD_HOLE1_4X1_8
PLTD_HOLE1_4X1_8

Circuito principal 1-25 W UHF2 (438-470 MHz) (hoja 2 de 2)

4-7
RX_EN
TX_EN
COMP_B+
PA_BIAS
PWR_SET
FILT_SW_B+
9V
INTEGRATOR
DET_VFWD
TX_INJ
RX
M5
PLTD_HOLE3_5x7_0_TRIMMED
M7
PLTD_HOLE3_5x7_0_TRIMMED
HOLES FOR PA SHIELD
M101 M102
PLTD_HOLE1_4X1_8
M103 M104
PLTD_HOLE1_4X1_8
73D02968C74-O
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