62-110395-19
5.6 ADVANCE MICROPROCESSOR REPLACE-
MENT & CONFIGURATION SETUP
When field diagnosis of a Carrier Transicold Trailer
refrigeration unit determines that an Advance
Microprocessor is not performing properly and must be
replaced, the following steps MUST be taken to ensure
correct operation of the unit following the repair.
Prior to beginning work on the unit, be certain that the
current configuration file has been downloaded for the
customer, from the Carrier Transicold Information
Center, and written onto a Configuration PC Card, using
the ReeferManager Program. If the original
microprocessor was equipped with the IntelliSet option,
this file will need to be on a Config Card in order to install
the IntelliSet parameters into the replacement
microprocessor. A computer is needed to enter the
engine and switch on hours into the new
microprocessor.
5.6.1 Microprocessor Replacement
a. If possible, power the microprocessor up, either us-
ing a PC Mode Jumper, or by turning the RS to the
Run position. If the microprocessor will not power
up, skip ahead to step 6.
b. Insert a Download PC Card into the PC Card slot and
download all data from the data recorder. If a Down-
load Card is not available, data may also be down-
loaded using a download cable and the ReeferMa-
nager PC Program.
c. Then, scroll through the Data List and make note of
the following from the MessageCenter:
• ID Number
• Unit Serial Number
• Unit Model Number
• Engine Hours
• Switch On Hours
• Date and Time
d. Remove PC Jumper or turn RS to Off.
e. Remove negative battery cable from battery.
f. Remove Connectors 1MP, 2MP, & 3MP from the out-
side of the Control Box.
g. Open Keypad side door. Open control box door.
h. Remove Connectors 5MP & 6MP inside the Control
Box. Remove all wires from the Micro.
i. Locate wire to 80A fuse that runs through the Current
Sensor. Note the orientation of the wire through the
Current Sensor, to be certain that the wire is rein-
stalled through the new Current Sensor in the same
direction. (Inserting the wire through the Current
Sensor in the opposite direction will result in erro-
neous current readings.) Remove wire from fuse
holder and gently pull through the Current Sensor.
j. Remove the screws holding the sides of the Micro
into the Control Box. Remove the single screw hold-
ingthetopoftheMicroinplace.
k. Pull the Micro back, and twist out of the Control Box.
l. Install the new Micro by reversing steps a. thru k.
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