Motorola APX 1000 Detailed Service Manual page 1013

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: 700 – 800 MHz (84012619001)
IF401M20
IN
CTRL_RX_78_LNA_A = 3V (HIGH), LNA'S TURN ON
IF402M20
IN
CTRL_RX_78_SW2
TL_RX_78 C402M20
IF403M20
RF_RX_78_SW1
IN
C404M20
CTRL_RX_78_SW2
RF_RX_78_SW3
C405M20
IF405M20
IN
U408M20
DC_LIN_3V VCC
GND
IF404M20
U408M20
IN
CTRL_RX_78_SW1
DC_LIN_1_8V_A
Q401M20
22K
CTRL_RX_78_LNA_A
CTRL_RX_78_SW2 = 0V, 800 PATH SELECTED
CTRL_RX_78_SW1 = 0V, 700 PATH SELECTED
SW1 AND SW2 HAVE TO BE OPPOSITE
L407M20
RF_RX_8_F1OUT
RF_RX_8_SW1
R450M20 R458M20
RF_RX_8_F1IN
V1 J2
FL401M20
J1 GND
IN1 OUT1
IN2 OUT2
V2 J3
C413M20
U402M20
R451M20
RF_RX_7_SW2
CTRL_RX_78_SW1 CTRL_RX_78_SW1
L408M20
RF_RX_7_F1OUT
C406M20
RF_RX_8_SW4
R452M20
R454M20
RF_RX_8_F2IN
RF_RX_8_SW3 RF_RX_8_F2OUT
V1 J2
FL402M20
J1 GND
IN1 OUT1
IN2 OUT2
V2 J3
R453M20 R455M20
U403M20
RF_RX_7_SW3
RF_RX_7_F2OUT
CTRL_RX_78_SW1
RF_RX_7_F2IN
C407M20
U408M20
NC
CTRL_RX_78_SW2
E401M20
DC_RX_78_LNA_A
R403M20 R404M20
R401M20
DC_RX_78_LNA_C DC_RX_78_LNA_D
C424M20
Q402M20 Q402M20
R402M20
DC_RX_78_LNA_B
CTRL_RX_78_LNA_B
DC_RX_78_LNA_E
C421M20 C422M20
L402M20
RF_RX_78_LNA1_C
L401M20
CTRL_RX_78_SW2
RF_RX_8_SW2
U404M20
RF_RX_78_LNA1_B
C425M20
J3 V2
C423M20
C487M20
RF_RX_78_SW2
GND J1 U406M20
RF_RX_78_LNA1_E
J2 V1
C484M20
L403M20
C418M20
C416M20
R447M20
CTRL_RX_78_SW2
U405M20
RF_RX_78_LNA2_B
J3 V2
RF_RX_78_LNA2_A
GND J1
J2 V1
C485M20
RF_RX_7_SW4
CTRL_RX_78_SW1
C417M20 C419M20
R448M20
C427M20
R413M20
RF_RX_78_LNA1_A
E402M20
DC_RX_78_LNA_F
R406M20
C426M20
DC_RX_78_LNA_G
R409M20
RF_RX_78_LNA1_F
R407M20
R405M20
Q403M20
R456M20
R408M20
DC_RX_78_LNA_I
DC_RX_78_LNA_J
C428M20 C429M20
RF_RX_78_LNA2_F
L405M20
RF_RX_78_LNA2_C
C488M20
L404M20 C432M20 R412M20
C430M20 C433M20 L489M20
U407M20
RF_RX_78_LNA2_D
R411M20
RF_RX_78_LNA2_E
L406M20
R457M20
8-183
DC_RX_78_LNA_H
R410M20
Q403M20 C431M20 C434M20
C490M20 C492M20
IF406M20
OUT
RF_RX_FE_B2_OUT
L491M20
Figure 8-89. Receiver Front End Circuit