Hln6837A Astro Spectra Plus Audio/Dc Schematic - Motorola ASTRO Digital Spectra Plus Detailed Service Manual

Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section
AUDIO DC BLOCK
EEPOT_CS
EEPOT_U_D*
EEPOT_INC*
EEPOT_CS_2
C429
150pF
R437 R438
22K 22K
VCC5.0
R406
2 8
MAI
1
100K
3
4 U404-1
C404 MC33202
33pF
VCC3.0
R434
2K
DCLK
RX
FSYNC
CODEC_PWR_DOWN
TX
VCC3.0
C420
Y400
XTAL
0.1uF 16.80MHz
R430
1 3
WARP VCON OUT
0
R421
0
CLOCK GEN
6881076C25-E
VCC3.0
C400
0.1uF
U400 U401
MAX5160 MAX5160
7 3 7
CS H
2 5 2
U_D W
1 6 1
INC L
VCC5.0
R400
C403
3.3K
C428
150pF 0.1uF
1
TP403
C402 R407
6 8
7
10K
1uF 5
4 U404-2
MC33202
R443
10MEG C439
VCC3.0
VCC3.0 15pF
U409
C444
R456 R441
470K
R435
0 L400
100pF 2 4
C440
12pF 1K
1 1uH
NC
DNP C427
R442
100pF
470K
TC7SH04F
VCC3.0
R426
4 1
470K
NC R427
1
10MEG
VCC GND
Y401
5 3
C422
CC4V
0.1uF R425
2 C423
10MEG
12pF
U408 32.768KHz
2
TC7SU04F
VCC3.0
C401
0.1uF
VCC3.0
R402
3
CS H
100K
5
U_D W
6
INC L
R401
3.3K
VCC3.0
R409
100K C406
C405
R408
0.1uF
18K
0.1uF
C407
1
TP404
.01uF
1.8V and 3.0V Regulators
C432
VCC5.0
.01uF
R451
39K
R452
20K
U410
LP2951CD
1 8 1
TP401 INPUT OUTPUT
7 5
FEEDBACK ERROR
3 2
SHUTDOWN SENSE
C430 C431
6
4.7uF 0.1uF
VTAP
R428
R436
100
0
C436
VCC5.0
.01uF
R454
R455
33K
47K
U411
LP2951CD
8 1
INPUT OUTPUT
7 5
FEEDBACK ERROR
3 2
SHUTDOWN SENSE
C434 C435
6
4.7uF 0.1uF VTAP
C424
12pF
VCC3.0
C441
0.1uF
R403
0
C425
4.7uF
9
BCLKR
12
BCLKT
11
MCLK
R404
8 2
DR RO_NEG
7
FSR 5.1K
10 U402
PDI
MC145483
14
FST
4
R405
Ana / Dig Ground Conn.
PO_NEG
2.2K
3 5
PI PO_POS
18 17
R429
TI_NEG TG
19 13 0
TI_POS DT
DNP
16
HB
R416
1 20
VAGREF VAG
0
R410
10K
5V voltage detect
VCC5.0 U412
53D46
2 1
Reset out
INPUT OUTPUT
VCC1.8 5 4
CD NC
R419
C438
.01uF
0
C433 C415
0.1uF 4.7uF
VCC3.0
R420
0
C437 C417
0.1uF 4.7uF

HLN6837A ASTRO Spectra Plus Audio/DC Schematic

7-55
1 2
I1 I2
SIGNAL_CONVERT
SC400
1
TP400
SDO
1
TP407
CLIH
32k_CLK
LV_DETECT
September 5, 2008