09/03
2-74
DC 3535/2240/1632, WC M24
4-420, 4-421
Initial issue
Status Indicator RAPs
4-420 Transfer Belt Assembly
Transfer Belt Assembly end of life.
Procedure
Replace the Transfer Belt Assembly (PL 5.3). The problem continues.
YN
Return to Service Call Procedures.
Was the Transfer Belt Assembly HFSI Counter reset in dC135 on the PWS.
YN
Reset the Transfer Belt Assembly Counter.
Replace the MCU PWB (PL 13.1).
CAUTION
Careful replacement of the MCU NVM PWB (REP 1.15) is important to avoid serious machine
failure.
If the problem continues, replace the MCU NVM PWB (PL 13.1).
4-421 IBT Belt Cleaner Life End
IBT Belt Cleaner Assembly end of life.
Procedure
Replace the IBT Belt Cleaner Assembly (PL 5.3). The problem continues.
YN
Return to Service Call Procedures.
Was the IBT Belt Cleaner Assembly HFSI Counter reset in dC135 on the PWS.
YN
Reset the IBT Belt Cleaner Assembly Counter.
If the problem continues, replace the MCU PWB (PL 13.1).
CAUTION
Careful replacement of the MCU NVM PWB (REP 1.15) is important to avoid serious machine
failure.
If the problem continues, replace the MCU NVM PWB (PL 13.1).
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