Ricoh K-C1 Service Manual page 117

20 February, 2001
2
Mode Number/Name
213* Outputs after Near End
214 Developer Initialization
220 TD Sensor Output Value Display
221 ID Sensor Error Analysis
301* Transfer Current
1 Normal paper
2 Thick/Special paper
USING SERVICE PROGRAM MODES
Function/[Setting]
Sets the number of copy/print/fax pages that can be made
after toner near-end has been detected.
[0 = 50 pages / 1 = 20 pages]
Reduce the number of pages if the user normally makes
copies with a high image ratio.
Initializes both the TD sensor toner supply target voltage
and the TD sensor gain value.
[0 = No / 1 = Yes]
Carry this out after replacing the developer or the TD
sensor.
Displays:
a) Vt: the current TD sensor output value and
b) Vref: the target TD output value Vts (SP2-926) +
correction for ID sensor output.
The TD sensor output value changes every copy. If a > b,
toner is supplied to the development unit.
Press ! to exit the display.
Displays Vsg, Vsp, Vsdp, Vt, and ID sensor input value.
Use these values to check the operational status of the ID
sensor.
[0 = No / 1 = Yes]
• This machine has no SC code for ID sensor errors. If
imaging problems occur (such as dirty background), use
this SP to determine whether the problem is with toner
density control.
• You can use SP7-911 to check the number of ID sensor
errors that have occurred.
☛ 5.1.14 ID Sensor Error Analysis
Adjusts the current applied to the transfer roller when
feeding from a paper tray.
[–2 = –4 µA / –1 = –2 µA / 0 = 0 µA / 1 = 2 µA / 2 = +4 µA]
Use a high setting if the user normally feeds relatively
thick paper (within spec) from a paper tray.
☛ 6.12.2 Image Transfer Current Timing
Adjusts the current applied to the transfer roller when
feeding from the by-pass tray.
[–2 = –4 µA / –1 = –2 µA / 0 = 0 µA / 1 = 2 µA / 2 = +4 µA]
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).
☛ 6.12.2 Image Transfer Current Timing
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