Motorola EM200 Serie Manual De Servicio página 400

Esquemas eléctricos de la tarjeta de circuito impreso 8486577U01 del radio UHF 25-40 W banda 2
(SOURCE)
3V D3_3V 5V
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
D3_3V COMP_B+
PA_CURRENT
PA_BIAS
PWR_SET
FILT_SW_B+
DC & AUDIO
16.8MHz
MOD_OUT
DEMOD
BW_SEL
B+
FILT_SW_B+
(SOURCE)
9V
(SOURCE)
9V
5V 3V
5V 3V
SPI_CLK
SPI_MOSI
SYNTH_CS
SYNTH_LOCK
16.8MHz
MOD_IN
(SOURCE)
9R 5V 9V 3V
9R 5V
RSSI
RX_EN
DEMOD
BW_SEL
PLTD_NUT
LOC_DIST
M9
1 P2-1
TEST_POINT
2 P2-2
1
TP2
DC Connector
1
TP3
TEST_POINT
VREV_BUFFER_IN
FILT_SW_B+
POWER CONTROL
INTEGRATOR
DET_VFWD
9R
9R TX_INJ
FGU
BOARD HOLES
M1 M2
PLTD_HOLE3_5x7_0
PLTD_HOLE3_5x7_0_TRIMMED
RX_INJ
PLTD_HOLE3_5x6_0_TRIMMED
M3
PLTD_HOLE3_5x7_0
9V 3V RX_INJ RX
RX
HOLES FOR PA SHIELD
U516
PLTD_HOLE1_4X1_8 PLTD_HOLE1_4X1_8
PEDS FOR GND CONTACTS
M103
PLTD_HOLE1_4X1_8
PLTD_HOLE1_4X1_8
Circuito principal 25-40 W UHF2 (438-470 MHz) (hoja 2 de 2)
4-7
RX_EN
TX_EN
COMP_B+
PA_CURRENT
PA_BIAS
PWR_SET
FILT_SW_B+
9V
VREV_BUFFER_IN
INTEGRATOR
DET_VFWD
TX_INJ
RX
M5
U517
M104