Motorola APX 1000 Detailed Service Manual page 973

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF2 (84012621001)
DC_RAW_B+
IN
DC_LIN_5V
IN
DC_LIN_3V
IN
R1299M11
DIG_CTRL_ATTH
IN
C1216M11
R1298M11
DIG_CTRL_I_LIMIT
IN
C1218M11
MAKO RAMP
ANA_CTRL_ISET R1210M11 R1214M11
IN
R1209M11
C1211M11 C1217M11
IN
DC_LIN_1_875V_D
IN
DIG_SPI_CLK
IN
R1219M11
ANA_CTRL_VSET
IN
ADDED FOR DEFAULT DC_LIN_5V
DC_LIN_1_875V_D
HIGH
U1208M11
DIG_DATA_SPI_MOSI DIR
IN B1 A1
B2
A2
R1213M11
GND
DIG_CTRL_TX_INH
IN
DELAY
R1204M11 R1212M11
U1209M11
C1206M11
DC_LIN_5V
U1209M11
VCC
GND
R1201M11
DC_LIN_1_875V_D
DIG_DMCS
IN
U1211M11
U1205M11
DIG_GPIO49
IN
DC_LIN_1_875V_D
VCC VCC
U1205M11 U1211M11
GND GND
DC_LIN_5VREF
U1232M11
VIN VOUT
SW_B+ IN
DNC1
NC
NC DNC2
C1230M11
C1237M11
GND1
E1219M11
R1225M11
R1226M11
R1240M11
R1232M11
C1233M11
DAC SCALER
R1252M11
C1225M11 R1244M11
POWER TUNE
DC_LIN_5V
R1241M11
R1245M11
TX_INH
R1242M11
TEMP CUTBACK
R1249M11
DC_LIN_5VREF
DC_LIN_5V
PLACE
DC_LIN_5V
NEAR R1250M11
DC_LIN_5V
R1211M11 PIN 5
R1282M11 C1239M11
PLACE
C1229M11
NEAR
C1215M11
PIN 1
U1201M11
R1251M11
POS
SCLK VREF
VOUT
SYNC VOUTA
U1243M11
LDAC VOUTB
RESET GND
VLOGIC U1238M11
SDO
SDIN
RX FE TUNE
RSTSEL
NC1
GAIN
NC2
DC_LIN_1_875V_D
DC_LIN_5V
U1217M11
R1223M11
DIR TXH_5V
B1 A1
B2 A2
GND
IO49 C1208M11
R1228M11
TXH
OUT
C1231M11
R1218M11
DC_LIN_5V
C1286M11
R1283M11
C1270M11 R1277M11
R1275M11
R1287M11
R1276M11
U1202M11
C1288M11
C1271M11
R1278M11 R1281M11
I_TO_V
SMALLER PICKER
DC_LIN_5V C1272M11
R1279M11
U1269M11
U1282M11
R1274M11
NO
R1284M11
IN COM
R1238M11
V_POS
NC
GND
DC_LIN_5V
C1273M11
R1280M11
R1285M11
R1243M11
R1262M11
R1264M11
DC_LIN_5V R1266M11
R1258M11 R1263M11
C1255M11
U1253M11
DC_LIN_5V
C1261M11
U1254M11
R1259M11 Q1264M11
22K
PLACE IN THERMALLY
STABLE LOCATION
DC_LIN_5V
R1260M11
C1262M11
R1255M11
R1257M11
DC_RAW_B+ U1256M11
22K
Q1263M11
R1253M11 R1261M11
R1254M11
FILT_RAW_B+
Q1268M11
R1267M11
Q1265M11
U1257M11
TXH_1
R1273M11
IN 22K
TX_INH
DC_LIN_3V
VCC
U1257M11
GND
R1293M11
C1294M11
R1289M11
R1268M11 R1203M11
U1202M11
C1291M11
INTEGRATOR
R1265M11
DC_LIN_3V
BAND
PDADI
L1201M11 C1201M11
C1248M11
C1250M11
DC_LIN_5V
R1247M11
U1251M11
C1249M11
RVS
COUPLER
R1269M11 R1270M11 R1271M11 R1272M11
Figure 8-63. Automatic Level Control Circuit
8-143
FILT_RAW_B+
OUT
R1205M11 VCTRL
VC
OUT
C1205M11
TXH_1
U1204M11
VCC U1203M11
RFIN OUT
VM VOUT TX_SWI
VOS
GND DC_LIN_3V
R1207M11
VCC
U1204M11
GND
R1208M11
L1202M11
C1203M11 RF_OUT
OUT
R1206M11
ANA_RX_FE_FILT_VTUNE
OUT
TX_7V_1
OUT