Motorola Radio Mcs2000 Vol 2g 68p81080c48 O Manual

 
68P81080C48-O,  Issued 12/98 
MCS 2000 Mobile Radio
Service Instructions
Volume 2g
VHF Frequency Range, 25W Specific 
Ó  
 1998 by Motorola, Inc., Radio Network Solutions Group 
8000 West Sunrise Boulevard
Ft. Lauderdale, FL 33322
All rights reserved.   

 
Safety 0 
                Safety Information 
Every radio, when transmitting, radiates energy into the atmosphere which 
may, under certain conditions, cause the generation of a spark.
All users of vehicles fitted with radios should be aware of the following 
warnings:
Do not operate radio near ßammable liquids or in the vicinity of explosive 
devices.
To ensure personal safety, please observe the following simple rules:  
Check  
 the laws and regulations on the use of two-way mobile radios in the...

 
Safety 1 
space in which the LP gas container and its fittings are located.  
¥  
Removable (outside) filling connections shall be used.  
¥  
The container space shall be vented to the outside. 
Anti-Lock Braking System (ABS) and 
Anti-Skid Braking System Precautions 
Disruption of the anti-skid/anti-lock braking system by the radio 
transmitter may result in unexpected vehicle motion.  
Motorola recommends the following radio installation precautions and 
vehicle braking system test procedures to...

 
Safety 2 
transmission selector to DRIVE. Press brake pedal just far enough to stop 
vehicle motion completely. Key radio transmitter. Verify that vehicle 
does not start to move while microphone is NOT being spoken into.
6. Repeat step 5. except do so while microphone IS being spoken into.
7. Release brake pedal completely and accelerate vehicle to a speed between 
15 and 25 miles/25 and 40 kilometers per hour. Ensure that a minimum 
of two vehicle lengths is maintained between front of vehicle and...

 
List of Effective Pages A 
LIST OF EFFECTIVE PAGES  
MCS 2000 Mobile Radio Service Instructions
Volume 2g
VHF Frequency Range, 25W Specific Information
Motorola Publication Number 68P81080C48-O 
I  
ssue Dates of Original and Revised Pages are: 
Revision O: December1998 
The Number of pages in this publication is 50 consisting of the
following: 
Note: The letter O in the Revision Letter column of the table above denotes an original page. Original pages 
ARE NOT identified as such in the page footors...

 
 B          
IMPORTANT 
ELECTROMAGNETIC 
EMISSION 
INFORMATION 
In August, 1996, The Federal Communications Commission (FCC) 
adopted an updated safety standard for human exposure to radio 
frequency electromagnetic energy emitted by FCC regulated 
equipment. Motorola subscribes to this same updated safety standard 
for the use of its products.
In keeping with sound installation practice and to maximize radiation 
efficiency, a one-quarter (1/4) wave length antenna should be installed 
at the center of...

 
Table of Contents i 
Table of Contents 
Safety Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety 0
List of Effective Pages  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  A
Important Electromagnetic Emission Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

 
ii List of Figures                                                                                                       
List of Figures 
Figure 1.  Overall Radio Functional Block Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 2.  Transceiver Board Section Locations   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 
List of Tables 
Table 1. Schematic Diagram Interconnection List  . . . . . . . . . . . . . . . . . . . ....

 
Introduction 1 
Introduction 
1 
This publication (Service Manual Volume 2g, Motorola Publication 
68P81080C48) provides frequency-range-specific information for the 
25-Watt MCS 2000 radio that operates in the VHF frequency range 
(136 to 174 MHz).
This publication is a companion volume to Service Manual Volume 1 
for MCS 2000 Radios, Motorola Publication Number 68P81083C20, 
which provides non-frequency-range-specific information for all MCS 
2000 Radios. Service personnel must have both Volume 1 and...

 
2 Introduction 
The four topics listed above for the controller section and for the 
control heads are covered in Volume 1 of this service manual, 
Motorola Publication Number 68P81083C20.
All the radios covered in this service manual contain a single circuit 
card assembly (a printed circuit board with components mounted), 
which is called the transceiver board.