Service manual

ENGINE SERVICE MODE
SM 5-27 G130/G131
Service Tables
2212
[Toner Near/End] Toner Near End / End Detection Threshold ([Color])
2212 009 Pixel [K] *BCU
2212 010 Pixel [YMC] *BCU
Specifies the number of sheets with full image
coverage that can be printed after toner near-end
has been detected.
When near-end is detected, the pixels in the
images are counted. The machine detects toner
end when the following happens, and the machine
stops printing even during a print job.
Pixel count = 5 A4/LT sheets with full
image coverage
[0 to 255 / 50
/ 1 sheet/step]
NOTE: The setting of SP2-212-11 has priority for
deciding when to stop printing.
2212 011 Min. Print *BCU Specifies the minimum number of sheets that can
be printed after toner near-end has been detected.
However, when the following happens 10
consecutive times, the machine stops printing
even during a print job or if this guaranteed
minimum has not been met.
Vt > Current Vref value + 1.2V
or Vt > 4.8V
[0 to 50 / 10 / 1 sheet/step]
2212 012 sensor avg [K] *BCU
2212 013 sensor avg [Y] *BCU
2212 014 sensor avg [M] *BCU
2212 015 sensor avg [C] *BCU
Displays the average signal value of the toner end
sensor. Printed images can be weak when the
value is larger.
[0 to 1 / 0
/ 0.01/step]
Each toner sensor detects the toner that is falling
through the toner path beneath the toner
cartridge. Each sensor outputs “0” when it detects
toner in the toner path, or outputs “1” when it does
not detect toner. The signal is “1” if toner is not
passing through the path even though the toner
cartridge contains toner. These signals, “0” and
“1”, are periodically checked and used to calculate
the signal average. When enough toner is in the
cartridge, the signal average is a smaller value
(“0” or its vicinity). When toner is insufficient, the
average is a larger value (“1” or its vicinity).
[T End ON/OFF] Toner End
Detection ON/OFF
*BCU
#
[0 to 2 / 1 / 1 /step] Alphanumeric, DFU
0: Disable (Both sensors disabled)
1: Enable (Both sensors enabled)
2: Vt Only (Toner end sensor disabled
and TD sensor enabled)
2213
Enables or disables toner near-end and end detection (if disabled, the toner supply
clutch on time is still counted). Use this SP only when tests are necessary under the
toner end or toner near end condition. Specify the default value after the tests.
NOTE: The main switch must be turned off and on to effect the setting change.
2223
[TD Vcnt] TD Sensor Vcnt Control
Initialization *BCU [0 or 1 / 1 / -] Alphanumeric, DFU
0: Disable, 1: Enable
2223 001
Enables or disables the Vcnt Auto Adjustment when detecting a new development
unit. When the machine detects a new development unit, developer initialization
automatically starts. During the developer initialization, Vcnt is automatically
adjusted so that Vt is within 3.0 ± 0.1V.
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