IV-23
M-3
Main motor unrotated
Possible cause
Step
Check
Result
Remedy
Failure of
connector
1
Is the connection of connector
P9 on the panel sensor PCB
correct?
No
Reconnect the connector.
Main motor (M1)
2
Disconnect connector P9 from
the panel sensor PCB.
Measure the resistance
between the connector pins of
the main motor by using a
circuit tester.
Do the measured resistances
satisfy the prescribed values in
the table below?
P9-5 and P9-6
P9-7 and P9-8
Approx.4.5
Approx.4.5
No
Replace the main motor.
Main PCB
3
Is the problem solved by
replacing the main PCB?
Yes
Replace the main PCB.
Sub motor
unrotated
4
Disconnect connector P9 from
the panel sensor PCB.
Measure the resistance
between the connector pins of
the main motor by using a
circuit tester.
Do the measured resistances
satisfy the prescribed values in
the table below?
P9-1 and P9-2
P9-3 and P9-4
Approx.9.1
Approx.9.1
No
Replace the sub motor.
M-4
No paper supplied
Possible cause
Step
Check
Result
Remedy
Connection
failure
1
Is the contact of connector P3
on the panel sensor PCB
good?
No
Reconnect the connector.
Panel sensor
PCB circuit
2
Set paper in the manual paper
slot and make a test print by
pressing the switch on the
control panel.
No
Replace the panel sensor
PCB.
Paper pick-up
clutch solenoid
Does the voltage between pins
2 (SOLENOID) and 1 (24V) of
the P3 connector on the panel
sensor PCB change from
approx. 24V DC to 0V within
the specified time?
Yes
Replace the paper pick-up
solenoid.
MP tray unit
failure
3
Is the surface of the separation
pad or the pick up roller
stained or worn out?
Yes
Clean the surface or replace.
Main PCB
4
Is the problem solved by
replacing the main PCB?
Yes
Replace the main PCB.
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 ...