B245/B276/B277/B268/B269 Service Manual 18-Jan-06
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2220
TD Sensor Output Value Display
2220 1
Displays:
1. Vt: the current TD sensor output value and
2. Vref: the target TD output value Vts (SP 2926) + correction for
ID sensor output.
The TD sensor output value changes every copy. If 1 > 2, toner is supplied to the
development unit.
2221
ID Sensor Error Analysis
2221 1 Vsg Displays the Vsg value.
2221 2 Vsp Displays the Vsp value.
2221 3 PWM Displays the PWM value.
2221 4 Vsdp Displays the Vsdp value.
2221 5 Vt Displays the Vt value.
2221 6 Vts Displays the Vts value.
2301*
Transfer Current Adjustment
Normal paper
[–2 = –4 mA / –1 = –2 mA / 0 = 0 mA / 1 = 2 mA /
2 = +4 mA]
2301 1
Adjusts the current applied to the transfer roller when feeding from a paper tray.
Use a high setting if the user normally feeds relatively thick paper (within spec)
from a paper tray (
p.248).
Thick/Special paper
[–2 = –4 mA / –1 = –2 mA / 0 = 0 mA / 1 = 2 mA /
2 = +4 mA]
2301 2
Adjusts the current applied to the transfer roller when feeding from the by-pass
tray. Use a high setting (a) if the user normally feeds relatively thick paper from
the by-pass tray, or (b) if waste toner is re-attracted from the drum (which can
occur when using transparencies). (
p.248)
Duplex
[–2 = –4 mA / –1 = –2 mA / 0 = 0 mA / 1 = 2 m
/ 2 = +4 mA]
2301 3
Adjusts the current applied to the transfer roller when carrying out a duplex job.
Use this SP if there is poor image transfer on the rear side of duplex copies (
p.248).
Cleaning
[–10 ~ 0 / –1 / 1 mA/step]
2301 4
Adjusts the current applied to the transfer roller for roller cleaning. Increase the
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