EPSON EPL-C8000
Rev. B
Chapter 2
OPERATING PRINCIPLES
2-62
2. 2nd BTR Advance/Retract control
In a 2nd transfer, the 2nd BTR must be in the Advance position.
(Otherwise it must be in the Retracted position.) The 2nd BTR
Advance/Retract is controlled by the BTR Cam Solenoid.
NOTE:To advance the 2nd BTR, the system continuously turns on
the BTR Cam Solenoid. To retract the 2nd BTR, the system
continuously turns off the BTR Cam Solenoid. (The mode is
changed by the P/H Motor Assembly rotation.)
BTR cam solenoid On/Off timing is as shown in the table below:
NOTE:If there is not sufficient time from when the BTR Cam
Solenoid is turned on from its off state—because there is not
enough time between the bottom edge of the previous image
and the top edge of the next image (for example, the time
between the 1st print in the LETTER [LEF] (1 side of the belt)
in the 2-UP mode and the 2nd print)— the BTR Cam
Solenoid stays ON and the HVPS continues to supply power
to the Contact Roll.
NOTE:The time required for the 2nd BTR advance operation is 1.2
seconds (standard speed mode) and 2.4 seconds (half-
speed mode) since the 2nd BTR receives the BTR Cam
Solenoid ON signal. The time required for the 2nd BTR
retract operation is 1 second (standard speed mode) and 2
seconds (half-speed mode) since the 2nd BTR receives the
BTR Cam OFF signal.
3. 2nd BTR Assembly end of life detection
(a) End of life detection
The life expectancy of the 2nd BTR Assembly is determined by
the number of printings (number of 2nd BTR transfer rotations).
By accumulating the 2nd BTR rotation counts, the life
expectancy of the 2nd BTR Assembly (2nd BTR) is determined.
The conditions for 2nd BTR end of life detection is defined in the
following table (See the next page):
Table 2-11. 2nd BTR Advance/Retract Control
Standard speed mode
ON timing
Comes ON E1 second before the top edge of the
image (printed area) passes the 2nd transfer position.
OFF
timing
Normal state
Comes ON E3 seconds before the top edge of the
image (printed area) passes the 2nd transfer position.
Abnormal
state
In case the rear edge of the image (printed area)
passes the 2nd transfer position after the rear edge of
the paper, the solenoid comes OFF E3 seconds before
the rear edge of the paper passes the 2nd transfer
position.
Half speed mode
ON timing
Comes ON E2 second before the top edge of the
image (printed area) passes the 2nd transfer position.
OFF
timing
Normal state
Comes ON E4 seconds before the top edge of the
image (printed area) passes the 2nd transfer position.
Abnormal
state
In case the rear edge of the image (printed area)
passes the 2nd transfer position after the rear edge of
the paper, the solenoid comes OFF E4 seconds before
the rear edge of the paper passes the 2nd transfer
position.
Table 2-12. 2nd BTR End of Life Detection
2nd BTR Assembly end of life warning
(Maintenance-call error xxxx)
98,000 counts (standard)
2nd BTR life - exceeded
(Service-call error: E0024)
100,000 counts (standard)
Содержание ColorPage EPL-C8000
Страница 1: ...EPSONColorPageEPL C8000 Color Laser Printer 4009762 SERVICE MANUAL ...
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Страница 15: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
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Страница 91: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 30 Figure 2 31 Xerographics II ...
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Страница 471: ... APPENDIX ...
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Страница 531: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 59 A 4 Component Layout Figure 1 50 C235MAIN 1 ...
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Страница 545: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 73 A 6 5 Wiring Diagrams Figure 1 56 Master Wiring Diagram ...
