HL-7050 SERVICE MANUAL
6-29
WARNING
If you analyze malfunctions with the power plug inserted into the power outlet, special
caution should be exercised even if the power switch is OFF because it is a single pole
switch.
M-3
Main motor does not rotate
Possible cause
Step
Check
Result
Remedy
Failure of
connector
1
Is the connection of connector
CN28 on the engine PCB
correct?
No
Reconnect the connector.
Main motor
2
Is the problem solved by
replacing the main motor?
Yes
Replace the main motor.
Engine PCB
3
Is the problem solved by
replacing the engine PCB?
Yes
Replace the engine PCB.
Main PCB
4
Is the problem solved by
replacing the main PCB?
Yes
Replace the main PCB.
M-4
No paper supplied
Possible cause
Step
Check
Result
Remedy
Failure of
connector
1
Is the contact of the solenoid
and feed motor connector on
the engine PCB good?
No
Reconnect the connector.
Engine PCB
circuit
2
Set paper in the manual paper
slot and make a test print by
pressing the control panel
button.
Yes
Replace the engine PCB.
Registration
Clutch (CN31)
Feeder Clutch
(CN31)
MP solenoid
(CN10)
Paper pick-up
solenoid (CN4)
Does the voltage between pins
2 (SOLENOID) and 1 (24V) of
the connectors on the engine
PCB change from approx. 24V
DC to 0V within the specified
time?
No
Replace the paper pick-up
solenoid or clutch.
Feed Motor
3
Does the Feed Motor work
properly?
No
Replace the engine PCB or
Feed Motor.
Separation pad /
pick-up roller
failure
4
Is the surface of the separation
pad or the pick-up roller dirty or
worn out?
Yes
1) Clean the surface of the
separation pad or pick-up
roller.
2) Replace the separation pad
or pick-up roller.
Main PCB
5
Does replacing the main PCB
solve the problem?
Yes
Replace the main PCB.
Содержание HL-7050 Series
Страница 29: ...HL 7050 SERVICE MANUAL 1 15 ...
Страница 59: ...HL 7050 SERVICE MANUAL 2 29 7 Change the settings in the printer driver Fig 2 47 Fig 2 48 Fig 2 49 ...
Страница 223: ...HL 7050 SERVICE MANUAL 6 13 JAM C JAM A2 A5 JAM D JAM A1 JAM B JAM E Fig 6 1 Tray 2 Tray 1 Tray 3 Tray 4 ...
Страница 295: ...A 1 APPENDIX 1 CONNECTION DIAGRAM HL 7050 ...
Страница 296: ...APPENDIX 2 MAIN PCB CIRCUIT DIAGRAM HL 7050 1 9 ...
Страница 297: ...APPENDIX 3 MAIN PCB CIRCUIT DIAGRAM HL 7050 2 9 ...
Страница 298: ...APPENDIX 4 MAIN PCB CIRCUIT DIAGRAM HL 7050 3 9 ...
Страница 299: ...A 5 APPENDIX 5 MAIN PCB CIRCUIT DIAGRAM HL 7050 4 9 CODE NAME LJ9004001 B512149 CIR 4 9 ...
Страница 300: ...A 6 APPENDIX 6 MAIN PCB CIRCUIT DIAGRAM HL 7050 5 9 CODE NAME LJ9004001 B512149 CIR 5 9 ...
Страница 301: ...A 7 APPENDIX 7 MAIN PCB CIRCUIT DIAGRAM HL 7050 6 9 CODE NAME LJ9004001 B512149 CIR 6 9 ...
Страница 302: ...A 8 APPENDIX 8 MAIN PCB CIRCUIT DIAGRAM HL 7050 7 9 CODE NAME LJ9004001 B512149 CIR 7 9 ...
Страница 303: ...A 9 APPENDIX 9 MAIN PCB CIRCUIT DIAGRAM HL 7050 8 9 CODE NAME LJ9004001 B512149 CIR 8 9 ...
Страница 304: ...A 10 APPENDIX 10 MAIN PCB CIRCUIT DIAGRAM HL 7050 9 9 CODE NAME LJ9004001 B512149 CIR 9 9 ...
Страница 305: ...A 11 APPENDIX 11 ENGINE PCB CIRCUIT DIAGRAM HL 7050 1 3 CODE NAME LJ9016001 B512139 CIR 1 3 ...
Страница 306: ...A 12 APPENDIX 12 ENGINE PCB CIRCUIT DIAGRAM HL 7050 2 3 CODE NAME LJ9016001 B512139 CIR 2 3 ...
Страница 307: ...A 13 APPENDIX 13 ENGINE PCB CIRCUIT DIAGRAM HL 7050 3 3 CODE NAME LJ9016001 B512139 CIR 3 3 ...
Страница 308: ...A 14 APPENDIX 14 LOW VOLTAGE POWER SUPPLY CIRCUIT DIAGRAM 100V HL 7050 1 2 NAME Low voltage PS Circuit 100V ...
Страница 309: ...A 15 APPENDIX 15 LOW VOLTAGE POWER SUPPLY CIRCUIT DIAGRAM 200V HL 7050 2 2 NAME Low voltage PS Circuit 200V ...
Страница 316: ...APPENDIX A 22 Fig A 2 Page counter is printed here This not printed in some countries ...