
IV-27
6. INSPECTION
MODE
6.1
Incorporated Inspection Modes
The printer incorporates various inspection modes such as the factory inspection mode
and the test print mode. The inspection mode varies depending on the model of the
printer.
This printer supports a factory inspection mode, continuous grid pattern print mode, 3
patterns print mode and NV-RAM value dump mode.
The operation of the inspection mode is as follows.
(1)
Turn off the power switch of the printer.
(2)
With the top cover open, turn on the power switch while holding down the switch
on the control panel.
When you enter this inspection mode, the Drum lamp is ON. Holding down the
panel switch will cause the lamps to turn ON in the order Drum
Alarm
Ready
Data
Drum. When you release the switch, a mode is selected.
The mode selected is indicated by the lamp which is ON when you release the
switch.
The inspection modes are assigned to the respective lamps as shown below.
Lamp
Type of inspection
Drum
Factory inspection mode
Alarm
Continuous grid pattern print mode
Ready
3 patterns print mode (grid, zip, black)
Data
NV-RAM value dump mode
Drum + Alarm *
ROM code reprogramming mode (only
when flash memory is fitted)
Alarm + Ready *
RAM check
Ready + Data *
4% density pattern print mode
* Note: For the HL-1050 printer only.
Details of the factory inspection mode are as follows.
This mode is used to check if the sensors in the printer are functioning correctly. In the
process of this inspection, the lamps and the switch on the control panel are also
checked. On entering this mode, the lamps show the status of the respective sensors as
follows;
Summary of Contents for HL-1020
Page 1: ......
Page 36: ...II 20 Fig 2 22 shows the CDCC interface circuit Fig 2 22 HL 1050 ...
Page 37: ...II 21 1 3 10 Engine I O Fig 2 23 shows the engine interface circuit Fig 2 23 HL 820 1020 1040 ...
Page 38: ...II 22 Fig 2 24 shows the engine interface circuit Fig 2 24 HL 1050 ...
Page 67: ...III 18 4 PACKING Fig 3 32 Documents Accessory carton Pad Pad Printer Bag Carton ...
Page 101: ...CODE UK4007000 B48K312CIR NAME V 5 Appendix 5 Main PCB Circuit Diagram HL 820 1020 1040 1 2 ...
Page 102: ...Appendix 6 Main PCB Circuit Diagram HL 820 1020 1040 2 2 CODE UK4007000 B48K312CIR NAME A 6 ...
Page 103: ...Appendix 7 Main PCB Circuit Diagram HL 1050 1 5 CODE UK4041000 B512001CIR NAME A 7 ...
Page 104: ...Appendix 8 Main PCB Circuit Diagram HL 1050 2 5 CODE UK4041000 B512001CIR NAME A 8 ...
Page 105: ...Appendix 9 Main PCB Circuit Diagram HL 1050 3 5 CODE UK4041000 B512001CIR NAME A 9 ...
Page 106: ...Appendix 10 Main PCB Circuit Diagram HL 1050 4 5 CODE UK4041000 B512001CIR NAME A 10 ...
Page 107: ...Appendix 11 Main PCB Circuit Diagram HL 1050 5 5 CODE UK4041000 B512001CIR NAME A 11 ...
Page 108: ...Appendix 12 Panel Sensor PCB Circuit Diagram CODE UK4010000 B48K303CIR NAME A 12 ...
Page 117: ...Apr 98 84U005BE0 PARTS REFERENCE LIST MODEL HL 820 1020 1040 1050 R LASER PRINTER ...
Page 122: ...1 1 1 MODEL HL 1050 84U 861 101 103 104 84U 862 106 6 4 5 MAIN PCB HL 1050 OTHERS ISRAEL 3 ...
Page 135: ...CONTENTS LOWER TRAY UNIT List 1 Drawing 2 ...
Page 137: ... 2 GENERAL DRAWING MODEL LT 24CL 54S X06 4 3 1 6 5 2 7 ...
Page 214: ......
Page 296: ...USER S GUIDE A 12 HP LaserJet IIP 6P EPSON FX 850 IBM Propritner XL EPSON FX 850 ...