5-20 888-2408-002
WARNING: Disconnect primary power prior to servicing.
Maintenance and Alignment
STEP 7 Turn the transmitter on and check the calibration. If the transmitter
calibration and configuration seem to be okay, then this procedure is
finished. If it is still not working, U39 will have to be replaced using
the following procedure “Replacing EEPROM U39”.
5.13.5 Replacing EEPROM U39
If it is necessary to replace EEPROM U39, with the old Master Controller or with a
new Master Controller, the "5.14 System Configuration and Calibration" on page 5-
22 procedure will have to be performed. However, since a new EEPROM is being
installed a few preliminary steps will have to be done first:
!
WARNING:
BE SURE TO USE AN ANTI-STATIC WRIST STRAP WHEN HANDLING PC
BOARDS OR IC’S TO PREVENT DAMAGE TO THE COMPONENTS.
STEP 1
Shut the transmitter off and remove AC power from the transmitter.
STEP 2 Remove the Master Controller Board. If only the EEPROM U39 is
being replaced then exchange U39 with the new one, re-install the
Master Controller Board and skip to STEP 6. If the Master
Controller Board is also being replaced then proceed with STEP 3.
STEP 3 Install the new U39 in the new Master Controller Board.
STEP 4 To transfer the Firmware ICs from the old board to the new one or to
simply install new firmware refer to "5.15 Removing/Replacing
Firmware ICs" on page 5-24, then return here.
STEP 5 Set all dip switches on the new board according to the list below and
install the Master Controller Board. Typical settings are:
•S1-1 thru S1-4 - Customer set RS232 ID
•S1-5 ON for U39 model 25040 and Firmware part # 917-2435-203,
revision “AA” or later Master Controller code (S1-5 set to OFF
for use with U39 model 25C04 and any part number firmware).
•S1-6 thru S1-8 OFF (Factory use only)
•S1-9 OFF (ON = Microcontroller RESET)
•S1-10 ON (APC ON)
STEP 6 Turn on the Low Voltage breaker in the rear of the transmitter. If the
EEPROM is blank, the Fault Log will register EEPROM_DEF
which means it loaded the default settings for the EEPROM (shown
in Table 5-1). Reset the fault Log.
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