Figure 12-47. Uhf (465-495 Mhz) Audio Circuitry Schematic Diagram (8486634Z02-O) - Motorola CP150 Service Manual

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)
C512
6.8pF
R512 150K
U510-1
LM2904
R511
8
2
R513
DEMOD
1
100K
3
4
5V_A
C511
220pF
R518
220K
C519
R519
100K
1uF
VS_AUDIO_SEL
VS_GAIN_SEL
PWR_SET
VOX
BW_SEL
CH_ACT
SQ_DET
LSIO
HSIO
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
6880309N62-C
R516
NU
C514
16pF
R514
5V_A
100K
1
Q520
5
IMX1
C518
6
8
6 C460
R515
0.1uF
7
5
U510-2 0.1uF
4
C513
LM2904
220pF
R521 R520
NU 100K
R517
3V_A
C451
0.1uF C452
C454
5V_A
C453
0.1uF
0.1uF
4.7uF
C455
10 V
.022uF
NC
13 GCB2 48
MICEXT
14 GCB1 47
GNDRC
15 GCB0 46
MICINT
16 CHACT 45
VDDRC
44
17 SQDET U451
TXSND
18 LSIO 43
30C53 RXRTN
19 HSIO 42
AUXTN
20 CSX 41
AUDIO
21 40
CLK MOD
22 DATA 39
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_DETECTO R
OPT_RX_AUD_RETURN
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_SEND
OPT_TX_AUD_RETURN
C461
3V_A
1000pF
R460
3V
24K
C467
C462 C463
1200pF
0.1uF 0.1uF
R474
R462 330
R464 R463
24K
30K 24K
C465
C464 C471
R476
3V_A 0.1uF 1000pF 2.2uF
100K
C472
0.1uF
A_MOD_OUT
MOD_OUT
C466
NU
SW_B+
1000pF
5V_B
R487
C499
0
5V_B
39pF
C483
R484
C481 2 8
C482 0.22uF
2.2K R491 R492
.01uF
1
.01uF
3
Not_Placed:NU
0 24K
4
C484
Not:Placed:NU
2 U480-1
3 R490
Not_Placed:NU .033uF
2.2K
LM2904
Q481
Not_Placed:NU Not_Placed:NU
Not_Placed:NU 1 3
R483
R485 100K
1
150K Q482
Not_Placed:NU
2
R486 Q490
Not_Placed:NU
100K
UMG5
Not_Placed:NU
6
1
5V_B U511
2
UMG5
3
6
4 1
R488
330K
2
3
R495
4
C490
5.6K
470pF
C498
1uF

Figure 12-47. UHF (465-495 MHz) Audio Circuitry Schematic Diagram (8486634Z02-O)

VR471
R470
2.2K
3V_A
NC
R480
0
R472 1 4 R473
680 680
VR472
C470
D471 R471 2
5
Q472
2.2K
0.1uF
Q471
3
6
1
NC
C477 2
5V
0.1u F
3
R255
3.9K
1%
4 BATT_CHARGE
1 R475
180K
D470 OPT_MIC
R477 L471
2 5
Q470
390nH
2.2K
NC
C474 C473
6 3 150pF 150pF SCI
VR473
20V
MMBZ5250B
NC
EXT_MIC_PTT
VR474
MMBZ5250B
C475
VR475
R479 15V MMBZ5245B 20V
100K
.022uF
J470-1
R478
1
2.2K
C476 C478
2
.022uF 150pF
C493 C494
R494
MICROPHONE
330K
2.2uF CONNECTOR
DC Level 0.3 - 0.4 V low
6
C488
Supply = 7.42 C480
R469
VCC
470pF
1/2 Supply = 3.22
U490
10
0.1uF
TDA854
1
MODE
5
3
INPOS OUTNEG
2 8
SVR OUTPOS
4
INNEG
C489
C479
GN D
1
470pF
7
150pF R496
C492
10K
R497
Not_Placed:NU
10uF 1MEG 5V_B
Not_Placed:NU
C496
R499
D491 8
6 270K
R498
1uF
7
Not_Placed:NU
5
47K
4
C495
R489
U480-2
1uF 91K
NC LM2904
Not_Placed:NU
Not_Placed:NU
Not_Placed:NU
12-61
6
RESET
4
BOOT_ENA
J471
ACCESSORY
CONNECTOR
4 S2
5 S4
6 S3
7 S1
NC
2 M2
3 M3
1 M1
J491-1
INTERNAL
SPEAKER
1
2
3 J491-3
4 J491-4
June, 2005