Sharp SF-2020 Service Manual page 104

Main code Sub code
05 04 DL lamp lighting check
The discharge lamp is lighted for 30 sec.
05 BL lamp lighting check
The blank lamp is turned on/off every 0.5 sec.
06 01 PSPS operation check
The separation pawl is turned on/off 30 times in the following sequence.
PSPS
02 Paper feed motor operation check
The paper feed motor in the second step of the main body is activated. When the PFU is installed, the paper feed
motors in the first and the second steps of the PFU are activated.
07 01 Warm-up time display and aging
After execution of the simulation, warm-up is started, and the swarm-up time is displayed every second on the
copy quantity display. When warm-up is completed (RPL ON), count adding of the display is stopped.
Press the CA key to clear warm-up time display, set the copy quantity and press the PRINT button to make the set
number of copies repeatedly.
04 Warm-up omitting
After completion of the simulation, the machine goes to the ready state. (RPL ON)
06 Intermittent aging
After execution of the simulation, the machine starts warm-up. After completion of warm-up, press the CA key to
clear warm-up time display, set the copy quantity and press the PRINT button to make the set number of copies
repeatedly.
After the interval time (2 min) from completion of making the set number of copies, the machine resumes copying.
08 Warm-up time display
Aging function is deleted from SIM 7-1.
08 01 DVBIAS check
The developing bias is turned on for 30 sec.
02 MTHV (main, transfer), grid check (ME)
The main/transfer charger is turned on for 30 sec.
For the grid bias, the ME value is outputted.
03 MTHV (main, transfer), grid check (PE)
The main/transfer charger is turned on for 30 sec.
For the grid bias, the PE value is outputted.
04 MTHV (main, transfer), grid check (T/S)
The main/transfer charger is turned on for 30 sec.
For the grid bias, the T/S value is outputted.
07 SHV (separation) check
The separation charger is turned on for 30 sec.
09 02 ADU sensor state display (SF-2120 only)
On/off states of the sensors in the ADU are monitored with the LED on the operation panel.
0.5s 0.5s
Sensor name
ADU open/close sensor
Tray paper sensor
ADU paper entry sensor
ADU paper transport sensor
Alignment plate home sensor
Rear edge plate home sensor
Content
Operation panel LED
First step cassette lamp
Paper empty lamp (ç)
Manual paper feed selection lamp
Resist position jam lamp ( )
Drum position jam lamp ( )
Paper exit position jam lamp ( )
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