III-8
3.7
Base Plate Assy
NOTE: Prior to turning the printer upside-down, the drum unit should be removed from the
printer.
(1)
Turn the printer upside down.
(2)
Remove the six M4 and eight M3 tapping screws.
(3)
Lift out the base plate assy and remove the grounding screw.
Fig. 3.8
3.8
Panel sensor PCB Assy
(1)
Remove the screw securing the panel sensor PCB assy. Slide the part A from under
the main shield and lift the PCB assembly upwards.
(2)
Disconnect the seven connectors from the PCB (The three connectors P2, P3 and
P9 have already disconnected when disassembling the scanner unit. See page, III-
5).
Fig. 3.9
Panel sensor PCB assy
A
Main Shield
Solenoid harness (P6)
HV flat cable (P7)
LV harness (P4)
M4 Screws (B tight)
Main (feed) motor harness (P5)
M3 Screws (S tight)
M4 Screws (B tight)
M3 Screws
(S tight) M4 Screws
(B tight)
M3 Screws (S tight)
M4 Screws (B tight)
Grounding wire
Washer
Grounding screw
Rubber foot
Base plate assy
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 ...