2F3/2F4
2-2-3
(2) Drum unit, developer unit and fuser unit
Figure 2-2-2 Drum unit, developer unit and fuser unit
1.
Drum PWB 1, 2, 3, 4 .................................... Drum PWB 1 (magenta), drum PWB 2 (cyan), drum PWB 3 (yellow),
drum PWB 4 (black) wiring relay circuit inside each color drum unit. Drum
individual information in EEPROM storage.
2.
Zener PWB 1, 2, 3, 4 ................................... Adjusts the main charger grid electrostatic potential.
3.
Fuser PWB................................................... Relays wirings from electrical components on the fuser unit.
4.
Eraser lamp 1, 2, 3, 4................................... Eliminates the residual electrostatic charge on the drum.
5.
Toner sensor 1, 2, 3, 4 ................................. Measures the toner concentration in the toner hopper.
6.
Fuser thermistor 1........................................ Detects the temperature of the heat roller.
7.
Fuser thermistor 2*
1
..................................... Detects the temperature of the press roller*
1
.
8.
Exit sensor ................................................... Detects paper misfeed in the fuser unit.
9.
Rear cover open/close sensor ..................... Detects the rear cover open.
10. Face up/down solenoid ................................ Switches the output stack between face up and face down.
11. LED print head 1, 2, 3, 4 .............................. LED print head 1 (magenta), LED print head 2 (cyan), LED print head 3
(yellow), LED print head 4 (black) lighting of dot light to drum of each
color drum unit.
12. Fuser heater lamp 1..................................... Heats the heat roller.
13. Fuser heater lamp 2*
1
.................................. Heats the press roller*
1
.
14. Fuser thermostat 1 ....................................... Disable power for the fuser heater lamp 1 in emergency.
15. Fuser thermostat 2*
1
..................................... Disable power for the fuser heater lamp 2*
1
in emergency.
*
1
: 16 ppm printer only.
DRUM UNIT
DEVELOPER UNIT
FUSER UNIT
(24 ppm printer)
FUSER UNIT
(16 ppm printer)
1
5
3
6
7
8
9
AT
AK
AL
AM
AN
AO
AT
3
6
8
9
AN
AL
2
4
Содержание C5020N - FS Color LED Printer
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