Confidential
CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING
This chapter details error messages and codes that the incorporated self-diagnostic
functions display if any error or malfunction occurs. If any error message appears, refer
to this chapter to find which components should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main
sections of the machine and related troubleshooting procedures. This will help service
personnel pinpoint and repair defective components.
CONTENTS
9.1 ERROR
INDICATION ...................................................................................................... 9-1
9.1.1 Equipment Errors................................................................................................. 9-1
[ 1 ] Error messages appearing on the LCD....................................................... 9-1
[ 2 ] Error codes shown in "MACHINE ERROR X X" messages........................ 9-5
9.1.2 Communications Errors ..................................................................................... 9-15
9.2 TROUBLESHOOTING .................................................................................................. 9-19
9.2.1 Introduction ........................................................................................................ 9-19
9.2.2 Precautions........................................................................................................ 9-19
9.2.3 Checking Prior to Troubleshooting .................................................................... 9-19
9.2.4 Troubleshooting
Based on Problem Type ......................................................... 9-20
[ 1 ] Software setting problems......................................................................... 9-20
[ 2 ] Image failure.............................................................................................. 9-23
[ 3 ] Paper transport error ................................................................................. 9-50
[ 4 ] Incorrect printout........................................................................................ 9-52
[ 5 ] Network problem ....................................................................................... 9-54
[ 6 ] Troubleshooting of the control panel......................................................... 9-58
[ 7 ] Troubleshooting of fax functions ............................................................... 9-60
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 ...
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