Motorola Astro Digital Spectra Digital Spectra Plus Basic 6881076c20 E Manual

6881076C20-EFebruary 3, 2003
Basic Troubleshooting: Synthesizer Troubleshooting 9-13
Synthesizer 
MalfunctioningSynthesizer Not Locked Check the synthesizer lock line (pin 14 of 
J500).
If > 1 V, then the synthesizer is not locked.
Go to Does Not Lock on Some Channels 
above.
Reference Oscillator 
Not On Frequency/
Working1. Check the reference oscillator 
frequency.
It should be 16.8 MHz ±4 Hz.
THIS MUST BE MEASURED @ 25° C
(77° F) TO BE ACCURATE.
2. Retune the reference oscillator if 
frequency is...

February 3, 20036881076C20-E
Notes
9-14Basic Troubleshooting: Synthesizer Troubleshooting 

Chapter 10 Functional Block Diagrams and Connectors
This chapter contains the ASTRO Digital Spectra and Digital Spectra Plus functional block diagrams and connector locations. 

10-2Functional Block Diagrams and Connectors: Digital Spectra Functional Block Diagram (Models W3, W4, W5, W7, and W9)
February 3, 20036881076C20-E10.1 Digital Spectra Functional Block Diagram (Models W3, W4, W5, W7, and W9)
Figure 10-1.  Digital Spectra Models W3, W4, W5, W7, and W9 Functional Block Diagram
PRESELECTOR
MIXERINJECTION
FILTER RX
(COAXIAL CABLE)
RX BUFFER
DIVIDERVCO TX BUFFER
PREAMP
TXVCO BOARDFRONT-END RECEIVER BOARD
COAXIAL
CABLE FROM
POWER
PA
TO
POWER
PA
VF VOLTAGE
SOURCE...

Functional Block Diagrams and Connectors: Digital Spectra Plus Functional Block Diagram (Models W3, W4, W5, W7, and W9)10-3
6881076C20-EFebruary 3, 200310.2 Digital Spectra Plus Functional Block Diagram (Models W3, W4, W5, W7, and W9)
Figure 10-2.  Digital Spectra Plus Models W3, W4, W5, W7, and W9 Functional Block Diagram
PRESELECTOR
MIXERINJECTION
FILTER RX
(COAXIAL CABLE)
RX BUFFER
DIVIDERVCO TX BUFFER
PREAMP
TXVCO BOARDFRONT-END RECEIVER BOARD
COAXIAL
CABLE FROM
POWER
PA
TO
POWER
PA
VF VOLTAGE...

10-4Functional Block Diagrams and Connectors: Radio Connectors
February 3, 20036881076C20-E10.3 Radio ConnectorsFigure 10-3.  J0103 Remote-Mount Control Head Connector
Figure 10-4.  J5 Control Cable for Remote-Mount Control HeadFigure 10-5.  J6 Radio Operations Connector
Figure 10-6.  J2 Rear Accessory Connector
Figure 10-7.  P104 Microphone Jack
12
345
13
12 11
10 8 7
14151617
48 49 40 41 34 43 4435
36
3738
45 46 4750
VIP 2
OUTVIP 1
OUT
VIP 2
IN
VIP 1
INDATA
OUT
MIC
LO
MIC
HISPKR
LO
SPKR
LOMIC
HI
MIC
LO...

Functional Block Diagrams and Connectors: Radio Connector Locations10-5
6881076C20-EFebruary 3, 200310.4 Radio Connector Locations
Figure 10-8.  Dash-Mount Radio Connector Locations
Figure 10-9.  Remote-Mount Radio Connector Locations
10.5 Radio Connector Locations (cont.)
Figure 10-10.  Command Board Connector Locations
Figure 10-11.  VOCON Board Connector Locations
MAEPF-24496-O
0
PWR
Mode
Scan
Phon
Sel
Call
VolD
IM
H
O
M
EX
M
IT
B
U
S
Y
1
2
3
4
56
7
8
9
0S
ts
M
s
g
H
/L
M
o
n
D
ir
R
c
l
D
e
l...

10-6Functional Block Diagrams and Connectors: Extender Cable (P501)
February 3, 20036881076C20-E10.6 Extender Cable (P501)
Figure 10-12.  P501 Extender Cable
10.7 Control Head Cabling Diagram
Figure 10-13.  Control Head Cabling Diagram
15 17 19 131197531 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49
16
18
20
14
12 108
642
22 24 26 28 30 32 34 36
38
40
42
44
46
48
50
P501
EXTENDER
CABLE
(3080370E06)
(FACING TOWARD
CONTROL HEAD)
J501
COMMAND BOARD
P1001
SPARE 2
EMERGENCY
SPARE 1
DIG GND
SWB+
BUS +
BUS -...

Chapter 11 Exploded Views and Parts Lists
This chapter contains the exploded views and associated parts lists for each of the ASTRO Digital Spectra and Digital Spectra Plus control heads. Tables containing pushbutton parts lists are also included. 

February 3, 20036881076C20-E11-2Exploded Views and Parts Lists: Model W3 Hand-Held Control Head Exploded View11.1 Model W3 Hand-Held Control Head Exploded View
Figure 11-1.  Model W3 Hand-Held Control Head Exploded View
2
1
3
4
5
6
7
8
415
14
109
12
11
13
Table 11-1.  Model W3 Hand-Held Control Head Exploded View Parts List
Item No.
Motorola Part No.
Description
1 Not available LABEL
2 0105955T26 ASSEMBLY, Rear Cover
3 3205082E93 SEAL, Main
4 4205343Y01 RETAINER, Snap (Qty 2)
5 0102707D81 BOARD, SB9600...