Sharp FO 4400 - B/W Laser - All-in-One Service Manual download pdf (Page 78)

FO-4400U

FO-CS1

3 – 26

Fig. 21

Fusing unit (2/2)

Heater Lamp

Voltage Mark

8. Remove the lamp holder. (2 screws)

9. Pull out the Heater Lamp (H1).

NOTE:

• Use care not to touch the lamp surface with bare hands.

• Position the voltage mark on the gear side when rein-

stalling the lamp.

(a)

(b)

(c)

Harness

Fig. A Backside of

Fusing Unit

Thermostat (TS1)

Thermistor (TH1)

10. Remove the drive gear from the Heat Roller.

11. Slide the Heat Roller to the right (a), swing out the left end (b),

and then slide the roller in the direction of (c) and pull it out.

NOTE:

• To prevent the surface of the Heat Roller from being

scratched by the Fusing Separators, lift the separators

when removing and reinstalling the roller. Use utmost

care not to damage the surface of the roller.

12. Remove the Fusing Paper Separators. (At 4 places)

13. Remove the Thermistor (TH1). (1 screw)

NOTE:

• Route the harness as shown in Fig. A when reinstalling

the Thermistor (TH1).

14. Remove the Thermostat (TS1). (2 screws)

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Sharp FO 4400 - B/W Laser - All-in-One Service Manual Page 78