CHAPTER 8 TROUBLESHOOTING
8-52
I-6
White Line (1)
Phenomenon
Vertical white line appears in the specific color area when test-printed in the four color mode
(Stripe Mode), as shown in
Main Causes
(1) Foreign particles adhering to the following places around the developer roller. (Refer to
Fig.8-12.)
x
Between the cartridge cover and developer roller (a)
x
On the surface of the developer roller (b)
x
Between the blade fixing plate and the developer roller (c)
x
Between the blade and the developer roller (d)
(2) Foreign particles adhering to the toner cartridge’s main blade of the color in question.
Fig. 8-7
Countermeasures
(1) Implement the test print.
(2) Confirm the color of the toner cartridge in question that has caused the white line.
(3) Remove the foreign particles adhering to the developer roller.
If foreign particles adhere to (d) of Fig.8-12, remove them referring to one of the figures
below.
Fig. 8-8
Fig. 8-9
Developer roller
Developer blade
Blade fixing plate
(a)
(b)
(c)
(d)
Approx. 1 cm
Piece of OHP
sheet
Developer roller
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 ...