Motorola Commercial Series Service Information - Page 27

Browse online or download pdf Service Information for Portable Radio Motorola Commercial Series. Motorola Commercial Series 30 pages. Uhf2 (438-470mhz)
Also for Motorola Commercial Series: Basic User's Manual (16 pages), Service Information (48 pages), Service Information (46 pages), User Manual (18 pages), Basic User's Manual (12 pages)

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Motorola Commercial Series Service Information
Controller Schematics
R511
100K
DEMOD
5V_A
U510-1
LM2904
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
VS_AUDIO_SEL
VS_GAIN_SEL
SPI_DATA_OUT
150 mV RMS (25 kHz) (Rx)
75 mv RMS (12.5 kHz) (Rx)
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
U510-2
C513
LM2904
220pF
2.3 V
R517
PWR_SET
VOX
C452
C451
0.1uF
0.1uF
C453
5V_A
4.7uF
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
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
10K
R522
100K
4
2
3
Q520-2
IMX1
1
5
6
Q520-1
IMX1
OPT_RX_AUD_SEND_DETECTOR
OPT_RX_AUD_RETURN
R521
R520
100K
NU
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_SEND
OPT_TX_AUD_RETURN
3V_A
C461
1000pF
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
200 mV RMS
41
AUDIO
40
MOD
MOD_OUT
39
RXSND
A_MOD_OUT
38
GCB5
NC
37
GCB4
C466
NU
114 mV (RF)
16_8_MHZ
F1200
145 mV RMS
uP_CLK
1.5 V
5V_B
R487
0
5V_B
R481
R482
C483
2
8
C481
0.22uF
1
3
U480-1
4
R484
C482
2
3
C484
Q481
R485
1
3
1
R483
R486
2
Q482
1
6
5V_B
2
3
4
1
Q490
R488
UMG5
330K
2
3
C490
470pF
U511
UMG5
3 V (UNSQ)
R470
2.2K
VR471
NC
R472
680
1.5 V
2
D471
R471
C470
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
NC
MMBZ5245B
15V
C475
.022uF
R478
0 V (Rx)
2.2K
EXT_MIC_PTT
3 V (Tx)
C476
C478
.022uF
150pF
R479
100K
7.5 V
SW_B+
C493
R494
C494
1000pF
330K
2.2uF
3.5V (UNSQ)
DC Level 0.3 - 0.4 V low
C499
C488
39pF
Supply = 7.42
470pF
1/2 Supply = 3.22
C480
R493
6
0.1uF
330K
1
MODE
3
5
INPOS
OUTNEG
3.5V (UNSQ)
2
8
R491
R492
SVR
OUTPOS
4
INNEG
0
24K
C479
7
C489
U490
470pF
150pF
TDA8541
R490
C492
R497
10uF
8
6
7
5
R498
4
D491
U480-2
C495
NC
6
1uF
4
R495
5.6K
0.15 V (UNSQ)
C498
1uF
3V_A
R480
0
R473
1
4
680
5
3
Q472
RESET
1
6
2
C477
0.1uF
BOOT_ENA
3
4
Q471
OPT_MIC
10 mV RMS (Tx)
S2
4
S4
5
SCI
S3
6
S1
VR474
7
NC
MMBZ5250B
M2
20V
2
M3
3
M1
1
J471
1
ACCESSORY CONNECTOR
2
J470-1
MICROPHONE CONNECTOR
1
2
J491-1
INTERNAL SPEAKER
3
J491-3
4
J491-4
R469
10
3.46 V RMS (Rx)(0.5 W@24 OHMS
R496
5V_B
R499
C496
1uF
R489
Audio Circuit Schematic Diagram (VHF)
3-5