Printer Engine Service Mode; Service Mode Table ('2. Engine Mainte') - Gestetner G056 Service Manual

PRINTER ENGINE SERVICE MODE

5.3 PRINTER ENGINE SERVICE MODE

5.3.1 SERVICE MODE TABLE ('2. ENGINE MAINTE')

Service
Description
Mode
Regist sag Paper feed
timing
Fusing Fusing power
Control control
Fusing Fusing
Temp temperature
adjustment
Fusing Fusing
T Dis temperature
display
OHP Bypass paper
Clutch Rt feed roller
rotation for
transparencies
Fusing Initial fusing
Start setting
Curl Low temperature
Control fusing
Charge Charge roller
Rol Bias voltage
adjustment
Mainscan Main scan
mag magnification
adjustment
Subscan Sub scan
mag magnification
adjustment
Developer Development
Bias Bias Adjustment
Toner End Number of prints
Count after toner near-
end is detected
G056/G058
Function
Adjusts the paper feed clutch timing at
registration. The paper feed clutch
timing determines the amount of paper
buckle at registration. (A larger setting
leads to more buckling.)
Selects whether the fusing power
control is on/off or phase control.
Use "Phase" control if the room lights
flicker when the fusing lamp starts.
Adjusts the fusing temperature for
printing.
Normally, do not change the setting.
Displays the fusing temperature.
Selects the number of rotations for the
bypass tray feed roller when the paper
type is set to "Transparencies."
This is to avoid jams when
transparencies are being used.
Roller turn: Warms up the fusing unit for
20 s at power on or when the machine
warms up from the energy saver mode.
Normal: There is no 20 s warm-up
period
Select 'roller turn' to avoid poor fusing in
a low temperature environment.
Lowers the fusing temperature (to
150°C) to prevent thin paper from
curling. Use this mode only when a
paper jam occurs during duplex rear
side printing.
Adjusts the charge roller voltage.
Normally, do not change the setting.
Adjusts the main scan magnification.
Adjusts the sub scan magnification.
Adjusts the development bias for
printing.
Normally, do not change the setting.
Adjusts the number of prints the
machine can print after it detects toner
near-end.
5-4
Setting
-8.0 to +8.0
2 mm/step
0 mm
Normal
(US)
Phase
(Europe/Asia)
100 to 200
10°C/step
170°C
1 (1 rotation)
2 (2 rotations)
Normal
Roller turn
Normal
Curl control
1000 to 2000
10 V/step
1650V
-0.5 to +0.5
0.1 %/step
0 %
-0.5 to +0.5
0.1 %/step
0 %
-800 to -200
10 V/step
-700V
50 to 200
50 sheets/step
200 sheets
SM