Service manual

UHF 25-40 W Band 2 PCB 8486577Z01 / Schematics 4-7
SPI_CLK
SPI_MOSI
SQ_DET
VS_AUDIO_SEL
uP_CLK
F1200
HSIO
LSIO
RESET
ASFIC_CS
CH_ACT
3V
D3_3V
5V
3V
5V
D3_3V
SPKR+
SPKR-
VOL_INDIRECT
VOX
VSTBY
FLAT_TX_AUDIO_INPUT_ACCESS_CONN
IGNITION
ONOFF_SENSE
RX_AUDIO_OUTPUT_ACCESS_CONN
BATT_SENSE
EMERGENCY_ACCES_CONN
EMERGENCY_SENSE
EXTERNAL_MIC_AUDIO_ACCESS_CONN
HANDSET_RX_AUDIO_CH
MIC_AUDIO_CH
5V_CH
TX_AUDIO_RETURN_OPT_BRD
TX_AUDIO_SEND_OPT_BRD
UNMUTED_RX_AUDIO_SEND_OPT_BRD
VS_MIC
POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BRD
RX_AUDIO_RETURN_OPT_BRD
DETECTOR_AUDIO_SEND_OPT_BRD
9V
FILT_SW_B+
FILT_SW_B+
PA_BIAS
PA_CURRENT
PWR_SET
9V
COMP_B+
DET_VFWD
FILT_SW_B+
INTEGRATOR
VREV_BUFFER_IN
INTEGRATOR
TX_EN
RX_EN
COMP_B+
PA_CURRENT
VREV_BUFFER_IN
9V
PA_BIAS
PWR_SET
FILT_SW_B+
DET_VFWD
RX
TX_INJ
M2
PLTD_HOLE3_5x6_0_TRIMMED
GND
1
M5
PLTD_HOLE3_5x7_0_TRIMMED
GND
1
PLTD_HOLE3_5x7_0
M3
1
GND
M1
PLTD_HOLE3_5x7_0
GND
1
3V 9R5V
SYNTH_CS
SYNTH_LOCK
TX_INJ
16.8MHz
3V5V
9R
MOD_IN
RX_INJ
SPI_CLK
SPI_MOSI
9R 5V 9V 3V
3V5V
9R
9V
BW_SEL
DEMOD
LOC_DIST
RSSI
RX
RX_EN
RX_INJ
M108
1
M110
1
M109
1
M106
1 1
M107
1
M105
PLTD_HOLE1_4X1_8
M104
1
GND
1
GND
U517
PLTD_HOLE1_4X1_8
GND
1
U516
PLTD_HOLE1_4X1_8
GND
1
PLTD_HOLE1_4X1_8
M103
M9
PLTD_NUT
GND
1
1
TP3
TEST_POINT
1
TEST_POINT
TP2
2
P2-11
P2-2
MOD_OUT
B+
BW_SEL
DEMOD
16.8MHz
FGU
DC & AUDIO
RX
(SOURCE)
(SOURCE)
(SOURCE)
(SOURCE)
(SOURCE)
(SOURCE)
POWER CONTROL
BOARD HOLES
HOLES FOR PA SHIELD
PEDS FOR GND CONTACTS
DC Connector
TO SHEET 2
UHF2 (438-470 MHz) 25-40 W Main Circuit (Sht 2 of 2)