HL-3450CN SERVICE MANUAL
8-61
I-21 Insufficient
Gloss
Phenomenon
Gloss of the print is not sufficient as shown in
print sample (21) of Page 8-46
Main Causes
(1) The fuser cleaner is stained.
(2) The fuser roller is deteriorated.
Countermeasures
(1) Replace the fuser cleaner with a new one. (See
(2) Replace the fusing unit with a new one. (See
NOTE:
When replacing the fusing unit, wait approximately for 30 minutes after the new unit is
installed to allow the fusing oil to circulate in the new fusing unit.
I-22 Back
Stain
Phenomenon
Back side of the print paper is stained as shown in
print sample (22) of Page 8-46
Main Causes
Fusing unit:
(1) The cleaning pad of the fuser cleaner is stained.
(2) Silicone oil in the oil bottle is short.
(3) The fuser roller and back-up roller are dirty.
Countermeasures
(1) Replace the fuser cleaner with a new one. (See
(2) Clean the fuser roller and back-up roller.
(3) Replace the fusing unit with a new one. (See
Summary of Contents for HL-3450CN Series
Page 15: ...HL 3450CN SERVICE MANUAL xiii 3 Rating Label For US For Europe 4 Operation Label 5 Jam Label ...
Page 17: ...HL 3450CN SERVICE MANUAL CHAPTER 1 PRODUCT OUTLINE ...
Page 27: ...HL 3450CN SERVICE MANUAL CHAPTER 2 SPECIFICATIONS ...
Page 39: ...CHAPTER 3 INSTALLATION ...
Page 54: ...HL 3450CN SERVICE MANUAL CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS ...
Page 104: ...HL 3450CN SERVICE MANUAL 4 51 Main PCB Circuit Diagram 1 8 CODE B512137CIR 1 8 LJ8907001 NAME ...
Page 106: ...HL 3450CN SERVICE MANUAL 4 53 Main PCB Circuit Diagram 3 8 CODE B512137CIR 3 8 LJ8907001 NAME ...
Page 108: ...HL 3450CN SERVICE MANUAL 4 55 Main PCB Circuit Diagram 5 8 CODE B512137CIR 5 8 LJ8907001 NAME ...
Page 110: ...HL 3450CN SERVICE MANUAL 4 57 Main PCB Circuit Diagram 7 8 CODE B512137CIR 7 8 LJ8907001 NAME ...
Page 126: ...HL 3450CN SERVICE MANUAL CHAPTER 5 CONTROL PANEL OPERATION ...
Page 173: ...HL 3450CN SERVICE MANUAL CHAPTER 6 PERIODIC MAINTENANCE ...
Page 208: ...CHAPTER 7 DISASSEMBLY RE ASSEMBLY ...
Page 264: ...HL 3450CN SERVICE MANUAL CHAPTER 8 TROUBLESHOOTING ...
Page 310: ...HL 3450CN SERVICE MANUAL 8 47 5 IMAGE FAILURE 1 2 3 4 5 6 7 8 9 a 9 b 10 11 12 13 14 ...
Page 311: ...CHAPTER 8 TROUBLESHOOTING 8 48 15 a 15 b 16 17 18 19 20 21 22 23 24 25 26 27 28 244m m 29 ...