Epson ColorPage EPL-C8200 Service Manual page 125

EPSON ColorPage EPL-C8200
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:
Table 2-11. 2nd BTR Advance/Retract Control
Standard speed mode
Comes ON E1 second before the top edge of the
ON timing
image (printed area) passes the 2nd transfer position.
Comes ON E3 seconds before the top edge of the
Normal state
image (printed area) passes the 2nd transfer position.
In case the rear edge of the image (printed area)
OFF
passes the 2nd transfer position after the rear edge of
timing
Abnormal
the paper, the solenoid comes OFF E3 seconds before
state
the rear edge of the paper passes the 2nd transfer
position.
Comes ON E2 second before the top edge of the
ON timing
image (printed area) passes the 2nd transfer position.
Comes ON E4 seconds before the top edge of the
Normal state
image (printed area) passes the 2nd transfer position.
In case the rear edge of the image (printed area)
OFF
passes the 2nd transfer position after the rear edge of
timing
Abnormal
the paper, the solenoid comes OFF E4 seconds before
state
the rear edge of the paper passes the 2nd transfer
position.
Chapter 2 Operating Principles
Half speed mode
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 2-12. 2nd BTR End of Life Detection
2nd BTR Assembly end of life warning
(Maintenance-call error xxxx)
2nd BTR life - exceeded
(Service-call error: E0024)
Revision A
98,000 counts (standard)
100,000 counts (standard)
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