Motorola CP040 Detailed Service Manual page 325

UHF2 PCB 8486348Z13-C Schematic Diagrams
R516
NU
C512
6.8pF
R512 150K
U510-1
LM2904
R511
2 8
R513
DEMOD
1
100K
3
4
5V_A
C511 C513
220pF
220pF
R518
220K
C519
R519
100K
1uF
VS_AUDIO_SEL
VS_GAIN_SEL
PWR_SET
VOX
BW_SEL
CH_ACT
SQ_DET
LSI O
HSI O
ASFIC_CS
SPI_CLK
SPI_DATA_OUT
VHF UHF
R513 Not Placed 100k
R515 Not Placed 0
R516 Not Placed Not Placed
R517 0 Not Placed
C514
16pF
R514
5V_A
100K
1
Q520
5
IMX1
C518
6
8
6 C460
R515
0.1uF
7
5
4 U510-2 0.1uF
LM2904
R521 R520
100K
NU
R517
3V_A
3V_A
C451
0.1uF
C452
C454
5V_A
0.1uF C453
0.1uF
4.7uF
C455
10 V
.022uF
3V_A
NC
13 GCB2 48
MICEXT
14 GCB1 47
GNDRC
15 GCB0 46
MICINT
16 CHACT 45
VDDRC
17 SQDET U451 44
TXSND
18 LSI O 43
30C53 RXRTN
19 HSIO 42
AUXTN
20 CSX
41
AUDIO
40
21
CLK MOD
39
22 DATA
RXSND
38
23 GND GCB5
NC
37
SYN
GCB4
24 LCAP
C456 C457
NC
0.1uF 0.1uF
C458
0.1uF
R451
47K
3V_A
3V
E451
3V 16_8_MHZ
BK1005HM471 C459
F1200
0.1uF
uP_CLK
5V_ B
E452
BK1005HM471
5V 5V_A
E453
5V
BK1005HM471
C497
0.1uF
R523
10K Audio
4
R522
2 Q520
IMX1
100K
3
OPT_RX_AUD_SEND_DETECTOR
OPT_RX_AUD_RETURN
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_SEND
OPT_TX_AUD_RETURN
C461
1000pF
R460
3V
24K
C467
C462 C463
1200pF
0.1uF 0.1uF
R474
R462 330
R464 R463
24K
30K 24K
C464 C465 C471
1000pF
0.1uF 2.2uF
A_MOD_OUT
MOD_OUT
C466
NU
5V_B
R487
0
5V_B
C483
R484
C481 8
C482 2 0.22uF
R491
NU
NU 1
NU
3
0
4
C484
NU
2 3 U480-1 R490
LM2904 NU
Q481
NU
NU 1 3
R483
R485 NU
1
NU Q482
2
R486 Q490
NU
UMG5
6
1
5V_B U511
2
UMG5
3
6
4
1
R488
330K
2
3 R495
4
C490
5.6K
470pF
UHF2 (438-470 MHz) Audio Circuitry Schematic Diagram PCB No. 8486348Z13-C
VR471
R470
2.2K
3V_A
NC
R472 1
680
VR472
C470
D471 R471 2
Q472
2.2K
0.1uF
6
NC
5V
0.1u F
R255
3.9K
1%
1 4 R475 BATT_CHARGE
180K
R476
D470 OPT_MIC
100K R477 L471
2 5
Q470
390nH
2.2K
NC
C472 C474 C473
6 3 150pF 150pF
0.1uF VR473
20V
MMBZ5250B
EXT_MIC_PTT NC
VR475 C475
R479 15V MMBZ5245B
100K
.022uF
R478
2.2K
C476 C478
SW_B+
.022uF
150pF
C493 C494
R494
330K
1000pF 2.2uF
DC Level 0.3 - 0.4 V low
6
C488
C480
Supply = 7.42
VCC
C499 1/2 Supply = 3.22 470pF
U490
0.1uF
TDA854
39pF
1
MODE
5
3
INPOS OUTNEG
2 8
R492
SVR OUTPOS
4
INNEG
C489
24K
C479
GN D 1
470pF
7
150pF R496
C492
R497
10uF NU
D491
8 6
R498
7
5
47K
4
C495
U480-2
1uF
NC LM2904
NU NU
C498
1uF
3-15
R480
0
4 R473
680
5
Q471
3
6
1 RESET
C477
2
3
4
BOOT_ENA
J471
ACCESSORY
CONNECTOR
4 S2
5 S4
6
S3
SCI
7 S1
NC
2 M2
VR474
MMBZ5250B
3 M3
20V
1 M1
J470-1
1
2
J491-1
INTERNAL
MICROPHONE
SPEAKER
CONNECTOR
1
2
R469
3 J491-3
10
4 J491-4
NU
5V_B
C496
R499
NU
1uF
R489
NU