Motorola MCS 2000 Service Instructions Manual page 185

10-37
VDRIVE
POWER RANGE CONTROL
*R0563*
8.2K
47K
R0565 *R0573*
PWR_RANGE
0 8.2K
47K
N/P
Q0554
V_FORWARD
9.3V
C0570
0.1uF
U0551
MC144111
10 2 PA_PWR_SET
CLK CLK Q1
4 CUR_LIM_SET
Q2
RX_CNTL1
6 11
DA_SEL EN Q3
13 PA_CNTL_LIM
Q4
1
SPI_TX_DATA D_IN
3
R1
5
R2
POWER CONTROL D/A
12
R3
8 14
NC R4
9
NC1
15
D_OUT
TEMP_GND
CURRENT_SENSE+
CURRENT_SENSE-
Connected to ground by NTC thermistor 0680149M02, 100k@25C, 9.7k@85C
PA_TEMP
PA_DIS
R0585
1K
R0528
47K
K9.1_ENB
270
47K
N/P
Q0552
December 6, 2004
R0554 connects VFWD_BUF and VSUM
R0554 IS LOCATED IN THE AUDIO/REGULATOR SCHEMATIC
VFWD_BUF
R0564 POWER CONTROL SUMMING NODE
VSUM
30K
SW_B+
U0550-4 *R0553*
13 4 MC3403 100K
C0566 14
100pF
12
11
FORWARD POWER
DETECT BUFFER
*R0577*
100K
R0559
TP0407
10K
*R0546*
4.7K
R0578 R0579 R0581 R0580
4.7K 4.7K 4.7K 4.7K
9.3V
R0588 *R0587*
100K 6.8K
N/P
R0550
47K
9.3V
9.3V
R0576
Q0553
47.5K
R0586
1K
R0562
100K
TP0403 CR0551
C0555 NOT PLACED
100pF
C0553
100pF
CR0550
TP0402
R0598 R0589 R0549
0 237K 237K
R0560 C0557
47.5K 100pF SW_B+
U0550-2
6 4
MC3403
7
5
11
*R0547* *R0583*
22K 237K
CURRENT LIMIT
*R0557* R0548
10K 0
R0558
47.5K
TP0406
R0551
47.5K
SW_B+
C0231
0.1uF
U0550-1
2 4
MC3403
*R0552*
1
C0551
100pF 3
27K
11
R0574
10K
TEMPERATURE PROTECTION
*R0582*
N/P DOMESTIC
47.5K
R0572
10K
N/P DOMESTIC
R0555
100K
NOT PLACED
POWER CONTROL AMPLIFIER
0.1uF
R0570
1K
9.3V
C0568 SW_B+
C0554
100pF
U0550-3
9 4
MC3403
8
C0562
R0567
100pF
47.5K 10
11
4.65V
R0592
R0569
47.5K
3.3K
R0556
R0596
1K
0
R0597
0
CR0553 9.3V
N/P DOMESTIC
C0559
43pF
U0202-1
MC3403 4
R0593
1
Q0555 22K
11
R0594
3.3K
C0552
0.1uF
R0584 R0590
47K 22K
R0595
Q0556
4.7K
PARTS USED FOR EUROPEAN TRANSMITTER RISE/FALL TIME REQUIREMENTS
PARTS NOT PLACED FOR DOMESTIC MODELS
R0561
15K
N/P DOMESTIC
C0230
0.1uF
N/P DOMESTIC
PA_DIS - US VERSION
Figure 10-23. Controller, Power Control Schematic Diagram
Chapter 10: Digrams and Parts Lists:
PA_CNTL_LIM
TP0400
R0571
PA_CNTL
100
C0569
1uF
9.3V
R0599
100K
2
3
C0572
R0591
0.1uF
4.7K
+5V
R0566
10K
R0568
Q0551
4.7K
TEMP
RX_CNTL1
K9.1V
MAEPF-28109-O
68P81083C20-D