Motorola CP040 Detailed Service Manual page 453

UHF3 PCB 8416846H01-A/-B Schematic Diagrams
R511
100K
DEMOD
5V_A
C511
220pF
VHF UHF
R518
220K
R513 Not Placed 100k
R515 Not Placed 0
R516 Not Placed Not Placed
R519 C519
100K 1uF
R517 0 Not Placed
R516
NU
C512 C514
6.8pF 16pF
R512 R514
150K 100K
5V_A
2 8
R513
1 6 8
R515
C518
3 7
0.1uF
4
5
4 C460
0.1uF
U510-1
LM2904
U510-2
C513 LM2904
220pF
R517
VS_AUDIO_SEL
VS_GAIN_SEL
PWR_SET
VOX
C452
C451 0.1uF
0.1uF
C453 5V_A
4.7uF
10V
C455
.022uF
BW_SEL
CH_ACT
13
GCB2
14
GCB1
15
SQ_DET GCB0
16
CHACT
17
SQDET
18
LSIO LSIO 30C53
19
U451
HSIO
20
CSX
21
HSIO
CLK
22
DATA
23
GNDSYN
24
ASFIC_CS LCAP
SPI_CLK
SPI_DATA_OUT
NC
C456 C457
0.1uF 0.1uF
C458
0.1uF
R451
3V 3V_A 47K
3V
E451
BK1005HM471
C459
0.1uF
5V_B
5V 5V_A
E452
BK1005HM471
5V
E453
BK1005HM471
C497
0.1uF
R523
100K
R522
4
100K
2
3
Q520-2
IMX1
1
5
6
Q520-1
IMX1
OPT_RX_AUD_SEND_DETECTOR
OPT_RX_AUD_RETURN
R521 R520
100K 100K
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_SEND
OPT_TX_AUD_RETURN
3V_A
C461
4.7uF
3V_A
R460
24K
C462 C463
0.1uF 0.1uF
C467
C454 1200pF
0.1uF R462
24K
R464 R463
30K 24K
C464 C465
C471
3V_A
0.1uF 1000pF
2.2uF
48
MICEXT NC
47
GNDRC
46
MICINT
45
VDDRC
44
TXSND
43
RXRTN
42
AUXTN
41
AUDIO
40
MOD_OUT
MOD
39
RXSND
A_MOD_OUT
38
GCB5 NC
37
GCB4
C466
NU
16_8_MHZ
F1200
uP_CLK
5V_B
R487
0
5V_B
R481
100K R482
330K
C481 C483
2 8
.01uF 0.1uF
1
Not_Placed:NU
3
U480-1
4 R484
LM2904 2.2K
C482 Not_Placed:NU
2 3 .01uF
C484
.033uF
Q481 Not_Placed:NU
R485
Not_Placed:NU 1 100K 3
1
R483
R486 150K
100K 2
Q482
1 6
5V_B
2
3 4 1 6
Q490
R488
UMG5
330K 2
3 4
C490
470pF
U511
UMG5
UHF3 (490-527 MHz) Audio Circuitry Schematic Diagram PCB No. 8416846H01-A/-B
R470
2.2K
VR471
3V_A
NC
R472
1
680
2
C470 D471 R471
2.2K
0.1uF VR472
6
NC
3V
5V
R474 R255
330 3.9K
1%
BATT_CHARGE
1 4
D470
R475 L471
180K 390nH
2 5
R476 R477
100K 2.2K
VR473
NC
MMBZ5250B
6 3
C472 Q470 C474 C473 20V
0.1uF 150pF 150pF
VR475
MMBZ5245B NC
15V
C475
.022uF
R478
2.2K
EXT_MIC_PTT
C476 C478
$V
.022uF 150pF
R479
100K
SW_B+
C493 R494
C494
1000pF 330K
2.2uF
$V
DC Level 0.3 - 0.4 V low
C499
C488
82pF Supply = 7.42
470pF
1/2 Supply = 3.22
C480
6
R493
0.1uF
330K 1
MODE
3 5
INPOS OUTNEG
2 8
R491 R492
SVR OUTPOS
4
INNEG
0 24K
C479
7
C489
U490
470pF
150pF TDA8541
R490
C492
2.2K
10uF R497 R496
Not_Placed:NU
1MEG 10K
Not_Placed:NU
8 6
7
5
R498
4
47K D491
U480-2
C495
LM2904
NC
1uF
R495
5.6K
C498
1uF
3-63
R480
0
R473
4
680
5
3
Q472
RESET
1 6
2
C477
0.1uF
BOOT_ENA
3 4
Q471
OPT_MIC
S2
4
S4
5
SCI
S3
6
S1
VR474 7
NC
MMBZ5250B
20V M2
2
M3
3
M1
1
1 J471
ACCESSORY CONNECTOR
2
J470-1
MICROPHONE CONNECTOR
1
2
J491-1
INTERNAL SPEAKER
3 J491-3
4 J491-4
R469
10
5V_B
R499
C496
270K
1uF
R489
91K