2220 TD Sensor Output Value Display
2220 1
Displays:
Vt: the current TD sensor output value and
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
2301 1
Normal paper
[–2 = –4 mA / –1
= –2 mA / 0 = 0 mA / 1 = 2 mA / 2
= +4 mA]
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
(
Image Transfer Current Timing).
2301 2
Thick/Special paper
[–2 = –4 mA / –1
= –2 mA / 0 = 0 mA / 1 = 2 mA / 2
= +4 mA]
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).
(
Image Transfer Current Timing)
2301 4
Cleaning [–10 to 0 / –1 / 1 mA/step]
Adjusts the current applied to the transfer roller for roller cleaning. Increase the current if
toner remains on the roller after cleaning. (Remaining toner may cause dirty background
on the rear side.) ( Image Transfer Current Timing)
4. Appendix: SP Mode Tables
34
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