Board Replacement - Motorola Spectra Service Manual

To initialize the memory board:
1. Connect the IBM PC and the dc power source to the
radio. Switch the radio power on.
2. At the PC's "MAIN MENU" prompt, press F2 to
select "SERVICE."
3. At the "SERVICE" menu, press F6 to select

"BOARD REPLACEMENT."

4. At the "BOARD REPLACEMENT" menu, press F4
to select the "MEMORY BOARD."
5. At the "MEMORY BOARD" menu, perform the steps
indicated on the screen, beginning with
step (1). Press ENTER to move to the next step.
Only the function key for the step indicated will be
active.
6. After completing step (3), restore the customer code
plug data, using
methods:
a. Retrieve archive file via the GET/SAVE menu
and then program the code plug;
or,
b. For conventional and dual-mode models, reen-
ter conventional data via the CHANGE/VIEW
menu; then use GET/SAVE and/or GET TCMS
(for trunked and dual-mode models) to down-
load a replacement codeplug image.
TCMS will not contain customer MODE NAMES,
SCAN LISTS, etc.
F. Command Board
1. Remove the radio covers. Lift off the command
board cover (earlier models only).
2. Remove the control head and the PA assembly.
3. Remove the shield over the memory board; discon-
nect the memory board and option board. (See
CAUTION note in memory board replacement sec-
tion).
4. Disconnect the PA connector and the control head
connector.
5. Remove the heatsink clip from the power transistor
on the command board. Remove the six mounting
screws (use Torx T15 driver).
6. Carefully lift the command board from the housing,
making sure that the floating header is with the RF
Board.
7. Apply a thin coat of thermal compound (for exam-
ple, Motorola part no. 11-83166A01) to the audio
final mounting surface.
Do not use a thick coating of compound; such could
degrade the thermal efficiency of the heatsink.
one of the following
NOTE
NOTE
8. Install the new command board and clip the power
devices to the chassis, being sure that the insulator
is in place behind the devices.
9. Install the mounting screws; starting with the screw
holding down the audio final.
10. Connect the memory board and option board; install
the memory board shield.
Make sure the male-to-male command board header
is fully seated in the RF board before installing the
command board.
11. Reconnect the two connectors.
12. Install the command board cover (on earlier mod-
els), the PA assembly, the control head, and the
radio covers.
Replacement command boards are preprogrammed
to enable the radio to function only at a test-mode
level. To restore the radio to complete operation,
you must initialize the command board via the
radio service software "BOARD REPLACEMENT"
procedure.
CAUTION
You must use the radio's memory board to initial-
ize a replacement command board, and once
initialized with that memory board, the command
board will not function properly with any other
memory board. Use the radio test modes to
ensure that replacing the command board will
solve the problem before you initialize it.
To initialize the command board microcomputer:
1. Connect the IBM PC and the dc power source to the
radio. Switch the radio power on.
2. At the PC's "MAIN MENU" prompt, press F2 to
select "SERVICE."
3. At the "SERVICE" menu, press F6 to select
"BOARD REPLACEMENT."
4. At the "BOARD REPLACEMENT" menu, press F3
to select the "COMMAND BOARD."
5. At the "COMMAND BOARD" menu, perform the
steps indicated on the screen, beginning with
step (1). Use the ENTER key to move to the next
step. Only the function key for the step indicated
will be active.
6. When alignment is complete, press F10 to exit.
7. See Table 16 and perform the other alignment
procedures indicated.
NOTE
NOTE
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