Ibt-Related Life Detection Control - Epson AcuLaser C8500 Service Manual

EPSON AcuLaser C8500
IBT cleaner toner band image
The IBT Cleaner toner band is the image which is equal to "Cin 50%", and it is
formed by 3 colors (Y, M, C ) at the time of the YMCBK mode, and formed by a
1 color (BK) at the time of the B/W mode.
Figure 2-66. IBT Cleaner Toner Band Image
Operating Principles

2.7.9.4 IBT-related life detection control

Life detection of the following 3 items is done with IBT.
TRANSFER ASSY
2ND BTR ASSY
BELT CLEANER ASSY
TRANSFER ASSY LIFE DETECTION CONTROL
Life detection
Life of TRANSFER ASSY takes an influence in the print number of sheets (the
primary transfer number of times, the secondary transfer number of times, Belt
cleaning number of times). Detect life of TRANSFER ASSY by the count added
at the time of the Belt rotation. Because TRANSFER ASSY is equal to the
device life, warning value/limit value is established as the following.
Table 2-7. TRANSFER ASSY LIFE DETECTION CONTROL
Condition
TRANSFER ASSY life warning
TRANSFER ASSY life limit
NOTE: The above count is the accumulation value made a "1 count" at a
TR0 signal one time (IBT BELT ASSY one turn).
Procedures when replacing
NOTE: Do the following treatment when exchanging TRANSFER Assy for
new one.
After replacing with a new TRANSFER ASSY, perform "Counter Clear".
NOTE: "Counter Clear" is when a command is sent from the printer
controller or diagnostics to reset the life counter corresponding to
various error / status code inside the MCU PWB to zero. (For
details, see "Chapter 3: Diagnostics Procedures".)
Revision C
Cont
99,999,999 count
(standard value)
99,999,999 count
(standard value)
2-67