3-37
Confidential
■
Poor fixing
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step
Cause
Check
Result
Remedy
1
High pressure of
pressure roller in
the fuser unit
Is the problem solved by
changing the position of
the anti-curl lever ?
Yes
Change the position of the
anti-curl lever.
2
Fuser unit failure
Is the problem solved
after replacing the fuser
unit?
Yes
Replace the fuser unit.
3
Toner sensor
failure
Is the "Toner life End"
message indicated on
the LCD after replacing
the current toner
cartridge with a new
one?
No
Replace the toner sensor.
4
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
5
Main PCB failure
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
6
Low-voltage
power supply
PCB failure
Is the problem solved
after replacing the PS
PCB unit?
Yes
Replace the PS PCB unit.
Summary of Contents for HL 5370DW
Page 12: ...CHAPTER 1 SPECIFICATIONS ...
Page 32: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Page 57: ...Confidential CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Page 109: ...Confidential CHAPTER 4 PERIODIC MAINTENANCE ...
Page 145: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Page 153: ...5 6 Confidential Fig 5 3 EM D110 4 places Separation pad ASSY ...
Page 154: ...5 7 Confidential 5 GEAR LAYOUT DRAWING Fig 5 4 ...
Page 213: ...5 66 Confidential 3 Remove the Gear 17 black Fig 5 86 4 Remove the Gear 17 white Fig 5 87 ...
Page 261: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...