BOARDS
SM 3-21 C262/C265
Replacement
Adjustment
3.5.5 ECU AND I/O REPLACEMENT, NVRAMS
SP mode data and other adjustment data are stored in the backup RAM on the
ECU. There are adjustable potentiometers on the I/O.
Therefore, after the ECU and/or I/O are replaced, the following adjustments are
needed.
- After the ECU is replaced -
• The SP mode data returns to the default. Save the data SP mode in order to
restore it later. If possible, print out all system parameter lists with SP8-001-1
to SP8-001-15.
• Do all the copy image adjustments. ( 3.4)
• Sensor board unit calibration. ( 3.3.6)
• Master end sensor adjustment. ( 3.7.15)
NOTE: If you use the backup RAM [A]
(IC38) from the old ECU on
the new one, all data,
including data in the SP
modes, will be restored. You
do not have to do the above
procedures. (The battery
inside the RAM preserves the
data if the RAM is removed
from the ECU.)
- After the I/O board is replaced -
• Carry out the adjustments for
the 1st drum master, 2nd drum
master, master eject, master set
sensor and master edge
sensors.
- When both the ECU and I/O board are replaced -
• Do all of the above adjustments. (The adjustments listed for the ECU are not
necessary if you put the old RAM on the new ECU.)
- After a new NVRAM is installed on the ACU or ECU-
See section 5.5.
C262R157.WMF
[A]
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