Motorola APX 1000 Detailed Service Manual page 927

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1 (84012620001)
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
D2
DIG_DATA_SPI_MOSI DIR
B2 B1
IN B1 A1
C2 C1
B2 A2
R1213M11
DIG_CTRL_TX_INH
IN
U1209M11
DELAY
A1
R1204M11 R1212M11
C2
B1
C1206M11
DC_LIN_5V
U1209M11
VCC
GND
DC_LIN_1_875V_D
DIG_DMCS
IN
U1211M11
U1205M11
A1
C2
A1
C2 B1
B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
U1205M11 VCC VCC U1211M11
GND GND
DC_LIN_5VREF
U1232M11
4 6
VIN VOUT
SW_B+ IN
3
DNC1
NC
5 DNC2
NC
C1230M11 C1237M11
E1219M11
R1225M11
1 2
R1226M11
R1240M11
R1232M11
C1233M11
DAC SCALER
C1225M11 R1244M11
POWER TUNE
DC_LIN_5V
PLACE
NEAR
PIN 10
R1241M11
TX_INH R1245M11
R1242M11
TEMP CUTBACK
DC_LIN_5VREF
R1249M11
PLACE
DC_LIN_5V
NEAR R1220M11
DC_LIN_5V
PIN 5
R1250M11
R1211M11 DC_LIN_5V
C1229M11
C1239M11
PLACE
NEAR
C1215M11 PIN 1
U1201M11
3
15 POS
10
SCLK VREF 4
2 1
1
11 SYNC VOUT
VOUTA U1243M11
7 LDAC 5
VOUTB
13 RESET GND
6
9 VLOGIC U1238M11
SDO
12 SDIN
4 RX FE TUNE
14 RSTSEL
NC1
8 GAIN 16
NC2
DC_LIN_1_875V_D
DC_LIN_5V
U1217M11
D2
TXH_5V
DIR R1223M11
B2 B1
B1 A1
C2 C1
B2
A2
IO49 C1208M11
R1228M11
R1218M11 TXH
TX_INH
OUT
C1231M11
DC_LIN_5V
R1283M11
C1270M11 R1277M11
R1275M11
2
1
R1276M11 3
U1202M11
C1288M11
C1271M11 R1278M11 R1281M11
I_TO_V
SMALLER PICKER
DC_LIN_5V C1272M11
R1279M11
U1269M11
U1282M11
R1274M11
3 1 NO
R1284M11
4 6 4
R1238M11 IN COM
1 5 V_POS 3
DC_LIN_5V NC
GND
C1273M11
R1280M11
R1243M11
R1262M11
DC_LIN_5V R1263M11 R1266M11
C1255M11
R1252M11
3
4
1
U1253M11
DC_LIN_5V
C1261M11
R1259M11 Q1264M11
3 3
22K
4 1 PLACE IN THERMALLY
1
STABLE LOCATION
DC_LIN_5V
U1254M11 DC_LIN_5V
R1260M11
C1262M11
R1255M11
R1251M11
DC_RAW_B+
R1257M11
U1256M11
3 3
22K
4 1
1
Q1263M11
R1253M11 R1261M11
R1254M11
FILT_RAW_B+
Q1268M11
2 3
R1267M11
U1257M11
Q1265M11
TXH_1
A1 3
R1268M11
IN 22K
C2 1
B1
DC_LIN_3V
U1257M11
VCC
GND
C1286M11
R1293M11
C1294M11
R1287M11 R1289M11
6
R1235M11
7
5
U1202M11
C1291M11
INTEGRATOR
DC_LIN_3V
R1234M11
PDADI C1202M11
BAND
L1201M11
C1248M11
C1201M11
C1250M11
DC_LIN_5V
3
4
R1247M11
1
U1251M11
C1249M11
RVS
COUPLER
FWD
R1269M11 R1270M11 R1271M11 R1272M11
R1264M11
Figure 8-35. Automatic Level Control Circuit
8-96
FILT_RAW_B+
OUT
R1203M11 R1205M11
VCTRL
VC
OUT
C1205M11
TXH_1
U1204M11
U1203M11
VCC A1
1 C2
RFIN
OUT
4 5 B1
VM VOUT TX_SWI
3
VOS
R1207M11
DC_LIN_3V
VCC U1204M11
GND
R1208M11
L1202M11
C1203M11
RF_OUT
OUT
R1206M11
ANA_RX_FE_FILT_VTUNE
OUT
TX_7V_1
OUT