3-26
Confidential
■
FUSER UNITFAILURE
■
LASER UNIT FAILURE
Laser diode failure/Polygon motor failure
■
MAIN MOTOR FAILURE
Step
Cause
Remedy
1
Harness connection failure
between fuser unit connector and
eject sensor PCB ASSY
Check the harness connection between
fuser unit connector and eject sensor PCB
ASSY.
2
Fuser unit failure
Replace fuser unit.
3
Low-voltage power supply PCB
failure
Replace the PS PCB unit.
4
Toner LED PCB failure
Replace the toner LED PCB ASSY.
5
Main PCB failure
Replace the main PCB ASSY.
CAUTION :
This problem will be cleared if leaving the machine power ON for 15 minutes.
In the case of LED model, turn the power on while pressing the [Go] button, when the front
cover is open. And check that Back cover/Toner/Drum/Paper LEDs light up, and then
release the [Go] button. Check that all LEDs go off and press the [Go] button twice, and
then this problem may be cleared by that press the [Go] button once again after all LEDs
light up.
In the case of LCD model, turn the power on while pressing the [Go] button, when the front
cover is open. And check that “USERS MODE” is displayed on the LCD, and then release
the [Go] button. Check that
Data
LED go off and press the [Go] button twice, and then this
problem may be cleared by that press the [Go] button once again after “USERS MODE” is
displayed on the LCD in the state that the backlight lights up.
This operation will melt the fuser unit if the heater is hot. It is necessary to leave for 15
minutes.
Step
Cause
Remedy
1
Laser unit harness connection
failure
Check the two harness connections of the
laser unit and reconnect them.
2
FG harness ASSY connection
failure
Check the FG harness ASSY connection
between the laser unit and main PCB
ASSY. Then reconnect it.
3
Laser unit failure
Replace the laser unit.
4
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Main motor harness connection
failure
Check the harness connection of the main
motor and reconnect it.
2
Motor load
Remove the motor load cause to turn the
each gears.
3
Main motor failure
Replace the drive sub ASSY.
4
Low-voltage power supply PCB
failure
Replace the PS PCB unit.
5
Main PCB failure
Replace the main PCB ASSY.
Содержание HL 5370DW
Страница 12: ...CHAPTER 1 SPECIFICATIONS ...
Страница 32: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Страница 57: ...Confidential CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 109: ...Confidential CHAPTER 4 PERIODIC MAINTENANCE ...
Страница 129: ...4 19 Confidential 14 Secure the Fuser unit with the pan B M4x20 Taptite screw Fig 4 27 Taptite pan B M4x20 Fuser unit ...
Страница 145: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Страница 153: ...5 6 Confidential Fig 5 3 EM D110 4 places Separation pad ASSY ...
Страница 154: ...5 7 Confidential 5 GEAR LAYOUT DRAWING Fig 5 4 ...
Страница 187: ...5 40 Confidential 2 Remove the SW key B from the Top cover printed ASSY Fig 5 41 SW key B Top cover printed ASSY ...
Страница 200: ...5 53 Confidential 8 13 Main Shield Plate ASSY 1 Remove the Insulation sheet Fig 5 63 Insulation sheet Frame L ...
Страница 212: ...5 65 Confidential 8 24 Gear 17 20 23 1 Remove the Gear 23 Fig 5 84 2 Remove the Gear 20 Fig 5 85 ...
Страница 213: ...5 66 Confidential 3 Remove the Gear 17 black Fig 5 86 4 Remove the Gear 17 white Fig 5 87 ...
Страница 261: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 276: ...Confidential CHAPTER 7 SERVICE MODE ...
Страница 308: ...App 1 1 Confidential FIRMWARE SWITCHES WSW There is not function of the firmware switch in this machine ...