Motorola Micom 2 Manual

							MICOM-2E-ALE Owner’s Manual
82
Vehicular Noise Reduction
Most vehicles are subject to several noise sources which greatly  disturb
a received signal. The most noisy sources are the high voltage ignition
sparks that are produced at the vehicles plugs. The second is the
alternator activity.
In keeping with the following insulation practices and if necessary by
adding some damping components, it may be possible to reduce  these
noises to a tolerable level.
1.  Keep your antenna tuner and antenna as far as possible from the
engine compartment.
2.  Connect the primary power lead of the radio directly to the battery
instead of the starter relay. The battery acts as a large capacitor
(about one farad for 50 Amp capacity batteries) by passing the
noise to ground.
3.  If necessary, connect 0.01 - 0.1 micro farad capacitors across the
primary leads of the coil and across the alternator output.
4.  Keep your DC and RF cables as short as possible.
5.  If your vehicle does not have a resistive ignition wire, it is
recommended to replace it with a such a wire.
6.  The MOTOROLA RF noise reduction kit for alternator equipped
vehicles (TLN8845) includes some useful accessories for noise
reduction. Among them being the resistive ignition coil suppresser
cable. In severe noise conditions, you may find this kit helpful. 
						

							83
Maintenance
Introduction
This section provides maintenance information for the user of the
MICOM-2E Radio.  By carrying out the installation procedures correctly
and following the maintenance instructions properly, you ensure
continual operation of your radio set.
Built-In-Test Equipment (BITE)
When an internal problem appears or is suspected, the MICOM-2E
internal BITE will assist the user to locate the source of this possible
problem and inform the service shop or dealer accordingly.
Preventive Maintenance
System Integrity
Periodically check the integrity of your system, check the power source,
cables, coaxes, connectors, antenna tuner (if exists) and antenna.
Carefully check that no damage has been caused to your cables, pay
extra attention to runway through holes and bent cables.
Periodic Calibration
To keep the frequency accuracy of your radio, it is required to calibrate
its internal frequency source after the third, sixth and twelfth month, and
yearly thereafter. Please ensure that your radio is calibrated on time. 
						

							MICOM-2E-ALE Owner’s Manual
84
Using BITE
Every time the radio is turned on, a self test procedure is being
activated. If an internal malfunction is found, an error message will be
displayed. Please contact your service shop or dealer and inform him
about the trouble indicated by BITE. The potential errors are:
Table 4.  Error Messages
Error No Description
01 DSP boot checksum fail (download)
02 DSP PLL unlock
03 DSP external RAM memory
04 Not applicable
05 DSP internal RAM memory
06 Not applicable
07 Not applicable
08 HC16 flash memory checksum
09 HC16 RAM memory
10 No 16.8 MHz clock
11 Battery low
12 Control head wake-up
13 Control head is not responding
14 Radio not programmed
15 Database fail 
						

							Maintenance
85
Troubleshooting
In case of malfunctioning, refer to the following table:
Table 5. User Troubleshooting Chart
Problem Troubleshooting
Blank Display CHECK· DC power cable is connected properly to the radio and
battery.
· A 7.5A fuse is installed in the fuse holder located on the
green wire of the DC power cable.
Display present but weak or
no receive signal or noiseCHECK· Connection of antenna to antenna tuner and antenna
tuner to radio cables (loose or broken connections)
· Squelch position OFF.· Correct programming of operating channel (frequency,
mode of operation, etc).
Engine noise picked up by
the antennaDetermine by observing difference in the reception by
turning the Engine ON/OFF.
ENSURE
· Ground leads are properly connected, all power wires
and ground leads are as short as possible
· That Noise Blanker (if installed) is enabled.· Install noise reduction Kit TLN8845.
Poor or no transmission CHECK· That a 30A fuse is installed in the fuse holder located
on the red wire of the power cable.
· That proper grounding cables are connected from the
radio and from the antenna tuner to the vehicle chassis.
· While speaking, check RF power bars for activity. The
resultant RF power output is displayed in approximately
15 W increments (bars) being added from left to right.
· If three or more left-hand bars disappear, there may be
a problem in the antenna system.  If antenna cabling,
antenna mast rigging position has changed since the
antenna was last tuned, the antenna tuner will not be
adjusted automatically.  To retune the antenna tuner,
scroll to the next channel and thereafter scroll back.  If
this procedure does not correct the situation, inspect
the tuner, antenna and ground plane for loose
connections or misplaced parts.  If no loose
connections are found, call the nearest Motorola
technician or service facility for assistance. 
						

							MICOM-2E-ALE Owner’s Manual
86
Problem Troubleshooting
Poor or no transmission
(continued)· If bars are missing on the right side of the RF power bar
graph, it indicates low transmitter power, which can be
caused by a faulty microphone, faulty transmitter,
overheating, or defective antenna system.
In case of a failure during operation, the following messages appear on
the radio’s display:
Table 6. Failure Messages
Message Troubleshooting
NO CLOCK CHECK· That a 30A fuse is installed in the fuse holder located
on the red wire of the power cable.
SYN FAIL Perform a built-in test via the RSS, to obtain more
information.
PW_LATCH Perform a built-in test via the RSS, to obtain more
information.
OVER TMP CHECK· That there is no fan obstruction.· Perform a built-in test via the RSS, to obtain more
information.
CU-LIMIT CHECK· That the radio is programmed to TUNER OFF when
your antenna system is not equipped with an ATU.
· If a short circuit occurred in the antenna’s coax.· That the ATU is in working condition.
NOT PROG*
(on the display)· The radio is not programmed and the baud rate is 1200
bit/sec.
· Program the radio parameters (from RSS)
*This message will appear if the radio DC power failed during the RSS
programming. 
						

							Maintenance
87
Service
Proper repair and maintenance procedures will assure efficient
operation and long life for this product. A Motorola maintenance
agreement will provide expert service to keep this and all other
communication equipment in perfect operating condition. Through its
maintenance and installation program, Motorola makes available the
finest service to those desiring reliable, continuous communications on
a contract basis.
Motorolas Customer Service Division is the largest service organization
specializing in mobile communications. It includes over 900 authorized
or company-owned stations. In addition, our products are serviced
throughout the world by a wide network of company or authorized
independent distributor service organizations. For a contract service
agreement, please contact your nearest Motorola service
representative, or Motorola sales representative. If you suspect a radio
problem, check the following items before requesting service.
Phone line support:
Motorola Radio Support Center
3761 S. Central Avenue
Rockford, IL 61102
USA
Phone:
International: 847-725-4830
Domestic USA: 1-800-227-6772
For customers of the US Federal Market, phone line support is available
at:
Motorola USFG Depot
7940 Penn Randall Place
Upper Marlboro, MD 20772
USA
Phone:
International: 301-736-4300 (Fax: 301-735-7414)
Domestic USA: 1-800-969-6680 (Fax: 800-784-4133) 
						

							MICOM-2E-ALE Owner’s Manual
88
Radio Checks
· Be sure the radio is turned on.
· Replace or recharge the battery. The first time a new battery is used,
it should be charged for at least 16 hours.
· The antenna must be screwed on properly, with its base flush against
the top of the radio.
· Could your radio problem be caused by accessories improperly
connected?
· Try operating the radio from several different locations, especially
when using the radio inside buildings. 
						

							89
Procedures
Changing the display brightness level ........................................................ 27
Changing the frequency value in the LCD display .................................... 18
Changing the password .............................................................................. 25
Choosing a new channel............................................................................. 15
Copying a channel’s parameters to another channel .................................. 31
Deleting a channel from MICOM-2E ........................................................ 32
Deleting a page from the stack manually ................................................... 64
Disabling ALE............................................................................................ 46
Enabling ALE (after disabling) .................................................................. 47
Entering BITE mode .................................................................................. 21
Entering Channel mode .............................................................................. 13
Entering DIM mode ................................................................................... 27
Entering Frequency mode .......................................................................... 17
Entering Lock mode ................................................................................... 22
Entering Password mode ............................................................................ 24
Entering Program mode ............................................................................. 23
Entering Programming mode ..................................................................... 29
Entering Scan mode ................................................................................... 20
Making a net call ........................................................................................ 60
Making an individual call ........................................................................... 58
Receiving a net call .................................................................................... 54
Receiving a sound call................................................................................ 55
Receiving an AllCall .................................................................................. 52
Receiving an individual call ....................................................................... 53
Returning a call to a station registered in the stack .................................... 64
Searching the stack for calls ....................................................................... 63
Sending an AllCall ..................................................................................... 57
Setting a channel’s frequency..................................................................... 34
Setting the AGC speed ............................................................................... 37
Setting the baud rate ................................................................................... 39
Setting the channel’s Tx power level ......................................................... 33
Setting the channel band ............................................................................ 35
Setting the channel band width .................................................................. 38
Setting the data power level ....................................................................... 40
Setting the operating mode ......................................................................... 36
Setting the radio option .............................................................................. 44
Setting the time-out time ............................................................................ 43 
						

							90
Toggling the speaker setting .......................................................................65
Transmitting................................................................................................26
Turning the radio on ...................................................................................11 
						

							Index-1
Index
—A—
accessories, 2
accessory connector, 9, 79
ALE, 45
alert tone indications, 9
AllCall, 52
AMD, 63
antenna connector, 79
Automatic Link Establishment, 45
automatic message display, 63
—B—
BER, 45, 48
bi-directional handshake, 51
bit error rate, 45, 48
BITE mode, 21, 83
—C—
call reject, 50
caller stack, 63
Channel mode, 13
connectors, 79
—D—
DIM mode, 27
Dimmer mode, 27
DPLX, 19, 34
Duplex Frequency, 19, 34
—F—
Frequency mode, 17
—I—
icon indicators, 8
Immediate Sounding, 50
individual call, 53
—L—
LCD icons, 8
LED indicators, 6
Link Quality Analysis, 45
Lock mode, 22
LQA, 45
LQA memory, 48
—M—
manual sounding, 50
—N—
net call, 54
—O—
optional handshake, 50
options, 2
—P—
Password mode, 24
Program mode, 23
—R—
Receiving Only Frequency, 19, 34
RXO, 19, 34