Gestetner B130 Service Manual page 205

SERVICE PROGRAM
2
Mode Number/Name
220 TD Sensor Value Display
1
221 ID Sensor Display
1
301* Transfer Current
1 Normal paper
2 Thick/Thin paper
4 Cleaning
5 Manual (Temporary)
B129 Series/B044 Series
CÓPIA NÃO CONTROLADA
Displays:
a) Current TD sensor output value (Vt)
b) Target TD output value [Vts corrected by ID sensor
output]
•
The TD sensor output value changes every copy. If
a > b, toner is supplied to the development unit.
•
Press
Displays Vsg, Vsp, Vsdp, Vt, and the ID sensor's PWM
output. 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.
•
( 5.1.11)
Adjusts the current applied to the transfer roller when
feeding from a paper tray.
[0 = –2 µA / 1 = 0 µA / 2 = +2 µA / 3 = +4 µA]
•
Use a high setting if the user normally feeds relatively
thick paper (within spec).
•
( 6.14.2, , "Image Transfer Current Timing")
Adjusts the current applied to the transfer roller when
feeding from the bypass tray.
[0 = –2 µA / –1 = 0 µA / 2 = +2 µA / 3 = +4 µA]
•
Use a high setting (a) if the user normally feeds
relatively thick paper, or (b) if waste toner is re-attracted
from the drum (which can occur when using
transparencies).
•
( 6.14.2, , "Image Transfer Current Timing")
Adjusts the current applied to the transfer roller for roller
cleaning.
[–10 ~ 0 / –4 / 1 µA/step]
•
Increase the current if toner remains on the roller after
cleaning. (Remaining toner may cause dirty background
on the rear side.)
•
( 6.14.2, "Image Transfer Current Timing")
DFU
5-64
CÓPIA NÃO CONTROLADA
Function/[Setting]
to exit the display.
SM