Ricoh Pro 8300S - ITB Centering: SC471-03, -04, -05, -06 (ITB Position Errors); Make Sure the Machine Is Level; Other Problems; Preparation for Lubricant Application Mode

5.Other Information
852
Other Problems
ITB Centering: SC471-03, -04, -05, -06 (ITB Position Errors)
Cause:
The machine issues the following SC codes when the machine ITB steering control mechanism cannot
correct the position of the ITB to compensate for the belt shifting out of position during operation:
 SC471-03 ITB position error 1
 SC471-04: ITB position error 2
 SC471-05: ITB position error 3
 SC471-06: Belt centering sensor error
Solution:
The value of SP 2-920-002 (Steering Control Roller Stable Position of Steering Roller) displays the
target setting (-20 ≤ SP Value ≤ +20) for the optimum position of the ITB that is used to reset the ITB to
its optimum position with steering control after the lubricant application mode has been executed so
that the ITB is positioned correctly for stable operation.
 The current setting of SP2-920-002 and the setting of the steering plate during operation and
before and after adjustment for any operation where lubricant was applied are recorded.
 If the optimum position of the belt cannot be recovered, then that value of the setting should be
passed to the product specialist in order to solve future problems.
 SP2-920-002 (Steering Control Roller Stable Position of Steering Roller) displays the number
of steps used in operation of the steering control motor that diagonally adjusts the position of
the steering control roller to keep the belt at the initial position. The target setting for this SP
code is "0". If the displayed setting is within range [-20 ≤ SP ≤ +20], the position can be
controlled within ±2 mm.
 This troubleshooting procedure is not required if the ITB has been replaced after the service
life of the ITB has expired and no ITB-related SC code has been issued.
Preparation for Lubricant Application Mode
This procedure is the same as that done for setting the machine in the lubrication application mode
after the ITB has been replaced.
1. Remove the drum cleaning unit.
2. Remove the PTR unit.
3. On the front of the ITB unit, turn both blade levers clockwise.
4. Remove the ITB unit.
Make Sure the Machine is Level
If the machine is not level within ±5 mm, this could cause the belt to cant to the front or rear and negate