Hln6837C Astro Spectra Plus Audio/Dc Discrete Schematic - Motorola ASTRO Digital Spectra Plus Detailed Service Manual

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EEPOT_CS
EEPOT_U_D*
EEPOT_INC*
EEPOT_CS_2
R437
22K
VCC5.0
R406
2 8
MAI
100K
3
4
C404
33pF
VCC3.0
R434
2K
DCLK
RX
FSYNC
CODEC_PWR_DOWN
TX
VCC3.0
C420
0.1uF
R430
1
WARP VCON OUT
0
R421
0
DNP
CLOCK GEN

HLN6837C ASTRO Spectra Plus Audio/DC Discrete Schematic

September 5, 2008
VCC3.0
C400
U400 0.1uF
MAX5160
7 3
CS H
2 5
U_D W
1 6
INC L
VCC5.0
C429
150pF
R400
R438
C403
3.3K
22K
TP403
150pF
C402 R407
6 8
1
10K
1uF 5
U404-1 4
MC33202
R443
VCC3.0
*Y400*
KT19
C439
10MEG
freq=16.8MHz
15pF
C444
R456 R441
3 470K
*U409*
0 R435 L400
100pF 2 4
C440
1uH
12pF 1K
1
NC
DNP
R442
470K
74AHC1G04
VCC3.0
R426
4 1
R427
470K
NC
10MEG
1
Y401
VCC GND
5 3
C422 CC4V
0.1uF
2
R425
freq=32.768KHz
10MEG
U408 2
TC7SU04F
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section
VCC3.0
C401
U401 VCC3.0
0.1uF
MAX5160
7 3
CS H
2 5
U_D W
1 6
INC L
R401
3.3K
VCC3.0
C428
R409
0.1uF
100K
C405
R408
7
U404-2 0.1uF 18K
MC33202
C407
TP404
.01uF
1.8V and 3.0V Regulators
C432
VCC5.0
.01uF
R451
39K
R452
20K
8
TP401 INPUT OUTPUT
7
FEEDBACK ERROR
3
SHUTDOWN SENSE
C430 C431
4.7uF 0.1uF VTAP
R428
R436
100
0
C436
VCC5.0
.01uF
R454
R455
C427
33K
100pF
47K
8
INPUT OUTPUT
7
FEEDBACK ERROR
3
SHUTDOWN SENSE
C434 C435
VTAP
C424 4.7uF 0.1uF
12pF
C423
12pF
VCC3.0
C441
R403 0.1uF
0
C425
4.7uF
R402
9
BCLKR
12
100K BCLKT
11
MCLK
R404
8 2
DR RO_NEG
7
5.1K
FSR
U402
10
PDI
MC145483
14
FST
4 R405
PO_NEG
2.2K
3 5
PI PO_POS
18 17 R429
TI_NEG TG
0
19 13
TI_POS DT
DNP
16
HB
C406
R416
1 20
VAGREF VAG
0
0.1uF
R410
10K
5V voltage detect
VCC5.0
2
INPUT OUTPUT
VCC1.8 5
CD
U410 GND
LP2951CD
R419
1 C438
.01uF
5
0
2
6
C433 C415
0.1uF 4.7uF
VCC3.0
U411
LP2951CD
R420
1
5
0
2
C437
6 C417
4.7uF
0.1uF
AUDIO DC BLOCK DISCRETE
VCC3.0
U409-2
5 PWR_GND
VCC
GND
3
Ana / Dig Ground Conn.
1 2
I1 I2
SIGNAL_CONVERT
SC400
TP400
SDO
C229
C228
470pF
470pF
DNP TP407
CLIH
32k_CLK
U412
53D46
1 Reset out
4
NC
LV_DETECT
63B81096C44-O
6881076C25-E