HL-3450CN SERVICE MANUAL
7-27
4.2.7
IOD1 PWB
(1) Remove the set screws ST3x6 (4 pcs.) from the shield (upper).
(2) Disconnect all the harness connectors (16 pcs.) connected to the IOD1 PWB. Note that
the DCN3 connector is a link plug and need not be removed unless necessary. (Refer to
the figure below.)
(3) Remove the set screws ST3x6 (6 pcs.) from the IOD1 PWB.
(4) Remove the IOD1 PWB.
Fig. 7-35
PRECAUTION
When handling the IOD1 PWB, take care that no damage is caused due to electrostatic
charges.
4.2.8
Control fan (CTFAN) (Cooling fan (PS)) / Interlock switch (Top) (Paper exit unit)
(1) Remove the ozone filter.
(2) Remove the set screw ST3x6 (1 pc.) to remove the control fan case assembly.
Fig. 7-36
Shield cover (Upper)
IOD1 PWB
Control fan assembly
Ozone filter
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 ...