Figure 7-24. Hud4022A Controller Power Control (Sheet 2 Of 2) - Motorola ASTRO XTL 1500 Detailed Service Manual

7-32
SW_A+
A+
BATTERY CONNECTOR
J0950-1
C0950
1 1
0.1uF
VR0950
1 1
J0950-2 2 24V
2
C0997 C0998
68pF 100pF
A+ VCC5
C0920
R0910
82K
1% *R0911*
*C0921*
12K
470pF
U0965
1%
4 5 LMV7219
1
3
2
VCC5
*R0912*
12K
1% *R0913*
130K
*R0914*
1%
12K
Q0960
10K
10K
10K
RX_FILT_1
VCC5 VCC3
U0962
LP3985
3
VEN
1 5
VIN VOUT
4
BYPASS
GND
2
C0940 C0941 C0943 C0942
0.1uF 1uF .01uF 1uF
TEST_POINT

Figure 7-24. HUD4022A Controller Power Control (Sheet 2 of 2)

June 15, 2005
TP0950
TEST_POINT
9.3V REGULATOR
9.3V SW_A+
U0950
LM2941T
4 5
VIN VOUT
2 1
ON_OFF ADJ
R0951
GND 7.5K
C0951 R0923 C0955
3 C0953 C0954
1uF 100 1%
0.1uF
22uF 0.1uF
R0952
1.2K
1%
0.1uF
DA_EN
SCKA
MOSIA
TX_DISABLE EEPOT_PC_U_D*
EEPOT_PC_INC*
VGBIAS_1
VCC5
10K
VGBIAS_2
LOOP_DISABLE
R0934
1K
R0930 R0931
20K 10K
9.3V_TX
VGBIAS_3
C0937
0.1uF
U0960 TEST_POINT
MC33204 4 13
TP0940
14
TP0931
1 12
TP0930
C0930
11 TEST_POINT
100pF
C0985
0.1uF
TP0951
9.3V_TX_ REGULATOR
9.3V_TX
TEST_POINT
U0951
LM2941T
4 5
VIN VOUT
2 1
ON_OFF ADJ
R0954 C0982
7.5K
GND 22uF
R0908 R0924
1%
3
100
2.7
R0993
C0956
1.2K
22uF
1%
Q0951
47K
K9.1V_EN
47K
*R0936* *R0937*
0 30K
9.3V_TX
U0960
C0933
MC33204 4 2
100pF
1
TEST_POINT
1 3
TP0936 TP0937
11
TEST_POINT
*R0938* *R0939*
0 30K
C0984
0.1uF
9.3V_TX
U0960
MC33204 4 6
7 C0934
TEST_POINT
1 5
100pF
TP0938
11
TP0939
TEST_POINT
C0987
*R0940* *R0941*
0.1uF
0 30K
9.3V_TX
U0960
4 9
MC33204
8
PWR_SET*
1 10
CURR_LIM_SET*
C0935
11
TP0941 VGBIAS_1*
100pF
TEST_POINT
VGBIAS_2*
VGBIAS_3*
RX_FILT_1*
TEMP_1*
NC
C0986
0.1uF
Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board
Q0952
8
K9.1V
7
6
3
5
2
1
R0955
4
100K
*R0947*
0
*C0952*
0.1uF
VCC3
C0981
0.1uF
U0959
MAX5259
4
2 VDD
OUTA
1
OUTB
16
VCC3
OUTC
15
OUTD
7 5
OUTE REF
8 11
OUTF CS
9
6
OUTG LDAC NC
10
12
OUTH SCLK
14 13
DOUT DIN
GND
3
6815854H01-A