5.1 - 16 Test Setup & Testing for 380–430 MHz
Service Flow Chart (Board Level)
Figure 5.1-2 Servicing the MTM5400/MTM800 FuG with Enhanced Control Head
No
Yes
No
Yes
If the radio does not have a control head
attached, you need to connect a control
head to operate the radio. For a motorcycle
radio, use a motorcycle control head. In all
other cases use a standard control head
Switch on the radio and observe the display
at power up. The radio must be completely
powered up.
NOTE:
Before replacing any kits, check the
flexes to the control head or expansion
head.
If the main board has been replaced:
Send the new TEI number to service
provider. Clone/reprogram customer
details to new radio.
If fuse F602 or F603 needs
to be replaced use Motorola part no.
6586808Y13
(see figure on following pages).
A list of replacement kits can be found
in the Replacement Parts & Kits appendix.
For a list of replacement parts refer to
the Maintenance chapter.
Start
Power up
OK ?
All tests
successful
?
Replacement
kits available
?
Read the codeplug with the CPS. Connect
the radio to the IFR. Perform all RF, call &
manual tests of chapter TESTING.
Replace main board and start
complete procedure again.
If no kits have been replaced,
verify installation integrity:
Check DC cable and connector
Check RF antenna , cable & connector
Check connected accessories
If the main board has been replaced:
Send the new TEI number to service
provider. Clone/reprogram customer
details to new radio.
Replace the costumer's radio.
Send the faulty radio to Level 3 maintenance.
Clone/reprogram customer details to new radio.
Send the TEI number of the new radio to the
service provider.
Incorrect behavior of
LEDs, display or buttons.
Replacement
kits available
?
Replace the control head
or the expansion head.
Switch on the radio again.
Power up
OK ?
Check fuses F602 and F603 on
the main board before you
replace main board and restart
complete procedure.
Done
No
No
Yes
Yes
Yes
Use the buttons and volume control and
check for correct display result.
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