Gestetner A193 Service Manual page 174

Mode No.
Class
Class 3
1 and 2
Transfer
Current Front
1 *
(Paper Tray)
Transfer
Current
By-pass
2 *
2-301 *
Transfer
Current Rear
3
(Duplex)
Transfer
Current
4
(Cleaning)
TD Sensor
Initial Setting
2-801
Separation
Voltage
1 Adjustment
(Front side -
leading edge)
Separation
Voltage
2 Adjustment
(Front side -
other areas)
2-901*
Separation
Voltage
Adjustment
3
(Rear side -
leading edge)
Separation
Voltage
4 Adjustment
(Rear side -
other areas)
SM
Function
Adjusts the current applied to the transfer
roller during printing from the paper tray.
If the user uses thicker paper, the current
may have to be increased to ensure
sufficient transfer of toner.
Adjusts the current applied to the transfer
roller during printing from the by-pass
feed table.
If the user uses thicker paper, the current
may have to be increased to ensure
sufficient transfer of toner.
Adjusts the current applied to the transfer
roller during printing from the duplex tray.
If the user uses thicker paper, the current
may have to be increased to ensure
sufficient transfer of toner.
Adjusts the current applied to the transfer
roller during roller cleaning.
If toner remains on the roller after
cleaning, increase the current.
Performs the TD sensor initial setting.
This SP mode controls the voltage
applied to the TD sensor to make the TD
sensor output about 2.0 V.
After installing a new PCU, the machine
performs this function automatically.
Do not use this SP mode.
Adjusts the discharge brush voltage at the
leading edge on the front side.
Increase if the paper is getting wrapped
around the drum.
Adjusts the discharge brush voltage on
the front side except at the leading edge.
Adjusts the discharge brush voltage at the
leading edge on the rear side.
For the rear side in duplex mode, higher
voltage is needed. The paper has more
static on it, and there is toner on one side
of the paper.
Adjusts the discharge voltage on the rear
side except at the leading edge.
4-9
SERVICE PROGRAM MODE
Settings
0: -2 µΑ
1: 0 µA
2: +2 µA
3: +4 µA
0: -2 µΑ
1: 0 µA
2: +2 µA
3: +4 µA
0: -2 µΑ
1: 0 µA
2: +2 µA
3: +4 µA
-10 ~ 0
1 µA/step
- 4 µA
0: No
1: Yes
-1000 ~ -4000
1 V/step
- 2300 V
-1000 ~ -4000
1 V/step
- 2300 V
-1000 ~ -4000
1 V/step
- 3000 V
-1000 ~ -4000
1 V/step
- 3000 V
(A193)