Confidential
3 - 2 8
(2) Motors (Refer to Fig. 3-30.)
No. Name Code
Function
1
Main Motor PU
MM
To drive the OPC belt and the paper
transport system.
2
Developer Motor PU
DM
To drive the toner cartridge and the
developing system.
3 Scanner
Motor
(Laser ASSY)
SCM
To scan the laser beam.
4
Exit Fan PU
EXFAN To exhaust the heat of fusing unit.
5
Power Supply Fan PU
PSFAN
To exhaust the heat of power supply unit
and Interface controller.
6
6-1
6-2
6-3
Interlock Switch PU
Front Cover Switch
Paper Exit Cover Switch
Back Cover Switch
DSW1
DSW2
DSW3
This the safety interlock switch when
opening the cover.
7
Laser Fan PU
LDFAN
To exhaust the heat of laser ASSY.
Fig. 3-30
1. Main Motor PU
2. Developer Motor PU
3. Scanner Motor
(Laser ASSY)
4. Exit Fan PU
5. Power Supply Fan PU
6-1. Front Cover Switch
6-2. Paper Exit
Cover Switch
6-3. Back Cover Switch
7. Laser Fan PU
Summary of Contents for MFC-9420CN
Page 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC 9420CN ...
Page 16: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 22: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 33: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 48: ...Confidential 3 1 4 CBV DBV Fig 3 16 Y M C K Fig 3 17 ...
Page 69: ...Confidential 3 3 5 Fig 3 35 ...
Page 73: ...Confidential 3 3 9 3 Interface Circuit Printer side Fig 3 38 ...
Page 82: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 85: ...Confidential 4 2 Cover page sample End page sample Fig 4 1 ...
Page 86: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 94: ...Confidential 5 5 5 1 1 AC Cord 1 Disconnect AC cord from the machine Fig 5 1 AC cord Machine ...
Page 175: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 203: ...Confidential CHAPTER 7 CLEANING ...
Page 205: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 213: ...8 6 Confidential Fig 8 2 Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Page 224: ...8 17 Confidential Cover page sample End page sample Fig 8 8 ...
Page 255: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 279: ...Confidential 9 23 2 Image failure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
Page 280: ...Confidential 9 24 15 a 15 b 16 17 18 19 20 21 22 23 24 25 Fig 9 1 ...
Page 325: ...App 1 5 Confidential 6 Transfer Unit X X X X X X 7 1 2 3 Location SERIAL NO YEAR MONTH DATE ...
Page 398: ...B Power Supply PCB 100V 127V Confidential ...