Gestetner B147 Service Manual page 307

2-210 [Toner Supply Counter] Toner Supply Counter ([Color])
Displays the total time that the toner supply clutch has been on.
This data is stored in the memory chip on each toner cartridge.
2-210-5 [K]
2-210-6 [Y]
2-210-7 [M]
2-210-8 [C]
2-212 [Toner Near/End] Toner Near End / End Detection Threshold ([Color])
When the amount of toner amount left in the cartridge becomes less than this value,
the machine starts monitoring the Vt values for toner near end detection.
2-212-1 Start [K]
2-212-2 Start [YMC]
Specifies the threshold for toner near-end detection.
The machine detects toner near-end when the following happens 10 times
consecutively.
Vt > Vref + Threshold
2-212-5 Near [K]
2-212-6 Near [YMC]
Specifies the threshold for toner end detection.
The machine detects toner end when the following happens 10 times consecutively.
Then, the machine stops printing, even during a print job.
Vt > Vref + Threshold
2-212-7 End [K]
2-212-8 End [YMC]
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
NOTE: The setting of SP2-212-11 has priority for deciding when to stop printing.
2-212-9 Pixel [K]
2-212-10 Pixel [YMC]
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
2-212-11 Min. Print
Displays the average signal value of the toner end sensor. Printed images can be
weak when the value is larger.
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).
2-212-12 sensor avg [K]
2-212-13 sensor avg [Y]
2-212-14 sensor avg [M]
2-212-15 sensor avg [C]
SM
*BCU [ 0 to 5000 / 0 / 1 second/step ]
*BCU
*BCU
*BCU
*BCU [ 0 to 1000 / 100 / 10 g/step ]
*BCU
*BCU [ 0 to 5.0 / 0.4 / 0.1 V/step ]
*BCU
*BCU [ 0 to 5.0 / 0.5 / 0.1 V/step ]
*BCU
image coverage
*BCU [ 0 to 255 / 50 / 1 sheet/step ]
*BCU
*BCU [ 0 to 50 / 10 / 1 sheet/step ]
*BCU [ 0 to 1 / 0 / 0.01/step ]
5-19
COPY SERVICE MODE
B147/B149/B190