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Reissued: 11-Jan-05
Model:
Model U-P1
Eliminated unnecessary occurrences of SC420 (Fusing bias discharge error):
SC420 will not be triggered when a leak occurs as a result of a small hole on
the fusing belt surface, since from field experience it has been confirmed that
belt lifetime is actually longer when the SC is not triggered in these
conditions. If the leak should occur, instead of the SC the machine turns
SP2-510 OFF (fusing bias SW), and the fusing bias is not applied until the
fusing counter is cleared when the user replaces the unit or the SP is set
back to ON.
1. Eliminated unnecessary occurrences of SC410 (2
leakage):
SC410 tends to frequently occur when using paper with a high moisture
content under high-temperature, high-humidity conditions when the
resistance on the paper transfer roller is low. The roller current was
previously lowered for mono-color mode (45% that of full color), which
lowered the resistance and caused frequent occurrences. This version uses
the color mode current for mono-color until job end to eliminate unecessary
occurrences under the conditions described above.
2. SP modes newly added (listed below).
These SPs have been added to ensure proper (higher) transfer belt cleaning
by applying the following bias voltages at job end (OPC lubrication time):
SP2-400-008: Cleaning Bias LL1: OPC lubrication time
SP2-401-008: Cleaning Bias LL2: OPC lubrication time
SP2-402-008: Cleaning Bias NN1: OPC lubrication time
SP2-403-008: Cleaning Bias NN2: OPC lubrication time
SP2-404-008: Cleaning Bias HH: OPC lubrication time
[0 to 2000/ 1400 / 10 Volt/step]
2. Minimum value changed for SP2-941-01, -02 (OPC lubrication time).
Minimum increased from 0 to 6:
SP2-941-01: Job End: [6 ~ 30 / 20 / 1 s/step]
SP2-941-02: OPC Lubrication Interval: [6 ~ 60 / 10 / 1 s/step]
NOTE : Along with this BICU version, be sure to update the main unit
controller firmware to v2.28 or later.
Modified in accordance with main unit controller v2.27 modificaiton.
For details, please see RTB #RG071003b.
NOTE : Along with this BICU version, be sure to update the main unit
controller firmware to v2.27 or later. For details, please see RTB
#RG071007 (black faint Images).
Minor bugs corrected.
Changes made in preparation for the addition of SP3-921-01/02 (from the
next version).
Note: These SP modes are not yet operational.
Software changed so that oil end detection is not performed while the fusing
unit is in operation, in order to prevent oil end misdetections caused by winter
humidity (humidification).
T
echnical
Symptom Corrected
B
ulletin
Date:
3-Feb-03
nd
transfer electric
PAGE: 6/8
No.:
RG071004f
Version
V1.45
V1.44A
V1.42
V1.40
V1.38
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