Service Manual

MM-E 2072-09333-00
ALC
Attenuator
CR8, CR9
VALC
ALC_REF_DAC
Predriver
Amplifier
Q5, Q7
Driver
Amplifier
Q3, Q4
Power Amplifier
Q6, Q11
PA Bias
Generator
Q2, Q8, U11
Driver Bias
Generator
U6
TX/RX
Switch
K1
P2
P4
RF_INPUT_TX
RX_OUT
To LORD
ALC Circuit
U5, U13, U14
Power Sensor
T4, CR6, CR7
Driver
Q801
V_REV_RADIO
V_REV_RADIO
PWR_AMP_BIAS
V_FWD_RADIO
J2
V_FWD_RADIO
PA_OUT
SW_BATT
9T
Temp Sensor
RT3, Q806, U9
Overheat
Protection
Q10
BIAS_EN
TEMP1
9T
Q10, Q12
SW_BATT
SW_BATT
+5V +10VDC
9T BIT
10VDC
+10VDC
PA_INHIBIT
R22
R67
R73
Predriver Bias
Generator
U1
To ANT
K101
K102
Harmonic Filter
K201
K202
K301
K302
K401
K402
K501
K502
K601
K602
K701 K702
Relay Control Signals
Band 1 (1.6 - 2.43 MHz)
Band 2 (2.43 - 3.7 MHz)
Band 5 (8.5 - 13 MHz)
Band 3 (3.7 - 5.6 MHz)
Band 6 (13 - 19.8 MHz)
Band 4 (5.6 - 8.5 MHz)
Band 7 (19.8 - 30 MHz)
Relay Drivers
U3
Serial/Parallel
Converter
U4
SPI_DATA
SPI_CLK
SPI_SEL
Tuner Current Limit
DC_PWR_IN
E1
+
_
E2
CH_CHANGE
BATT_CHECK
ATU DC
Switch
Q17, Q15,
Q802, Q803
Protection
Circuit
U22, U19
Battery Voltage
Monitor
U10, VR4
Dual
Switching
Regulator
U20
+10V
Regulator
Q13, U21
+5V
Regulator
Q1, U2
Filter
ON/OFF
Switch
and Surge
Protector
U23, Q14,
Q26
DC_PWR_EN
SW_BATT
SW_BATT_PS
+10VDC
+8VDC
+5VDC
+8V
Regulator
U16
V_TEMP_PA
From LORD
Figure 2-17. HI POWER Module, Functional Block Diagram
2-35/2-36