III-5
3.4
Fixing Unit
(1)
Remove the M4x12 screw securing the fixing unit.
(2)
Lifting up the fixing unit, disconnect the two heater harnesses and disconnect the
thermistor cable from the connector on the EL PCB.
Fig. 3.5
(3) Remove the two M3x10 screws.
(4) Open the fixing unit cover along the open side of the fixing unit cover.
Fig. 3.5a
Fixing unit
Heater harness (Blue)
Thermistor harness (White)
Heater harness (Brown)
EL PCB
Taptite, M4x12
Fixing unit
cover
Shaft
Fixing unit cover
Pressure
roller
Fixing unit frame
PR98292
Taptite, M3x10
Summary of Contents for HL-720
Page 1: ...SERVICE MANUAL MODEL HL 720 730 730Plus R LASER PRINTER ...
Page 36: ...II 19 1 3 10 Engine I O HL 720 Fig 2 21 shows the engine interface circuit Fig 2 21 ...
Page 37: ...II 20 HL 730 730Plus Fig 2 22 shows the engine interface circuit Fig 2 22 ...
Page 61: ... Fig 3 18 2 4 1 1 1 ...
Page 92: ...SERVICE MANUAL MODEL HL 760 R LASER PRINTER ...
Page 109: ...II 8 1 3 4 DRAM Two 4M bit DRAMs x 16bits are used as the RAM Fig 2 6 ...
Page 113: ...II 12 1 3 10 Engine I O Fig 2 12 shows the engine interface circuit Fig 2 12 ...
Page 114: ...II 13 1 3 11 Paper Feed Motor Drive Circuit Fig 2 13 ...
Page 133: ...Appendix 2 Main PCB Circuit Diagram 1 3 CODE UK3227000 B48K272CIR 1 3 NAME ...
Page 134: ...Appendix 3 Main PCB Circuit Diagram 2 3 CODE UK3227000 B48K272CIR 2 3 NAME ...
Page 135: ...CODE UK3227000 B48K272CIR 3 3 NAME Appendix 4 Main PCB Circuit Diagram 3 3 ...