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4 - 3 5
Confidential
Problem
Action to be taken
(7) Ink splash
Printer
• Perform the purging operation (Function code 76) several times
to remove dust or air bubbles from its nozzles. (Refer to
• Check the ink cartridges. Any of them has run out of ink or the
ink viscosity has been increased, so replace it.
• Check the head property data (Refer to
• Check that the main drain tube is not bent.
• Replace the head/carriage unit.
• Replace the main PCB.
• Replace the power supply PCB.
• Replace the maintenance unit.
(8) Print edges not aligned
Printer
• Check the alignment of vertical print lines with Function code
65 in the maintenance mode. (Refer to
• Perform the print head skew compensation with the head skew
adjuster knob. Refer to
• Check the head/carriage unit.
• Check the CR encoder strip for stains or scratches. (If the CR
encoder strip is not hooked properly, correct it.)
• Correct the positioning error of the head/carriage unit. (Refer to
Chapter 7, Section 7.2, [ 4 ].
)
• Check the height adjustment mechanism of the head/carriage
unit (Refer to
• If the "head-platen gap offset" is enabled with assurance mode
switch AMS 02 (Function code 88), align the vertical print lines
(Function code 65). (Refer to
Chapter 9, Sections 9.1.4. 25 and
(9) Random missing dots
Printer
• Perform the purging operation (Function code 76) several times
to remove dust or air bubbles from its nozzles. (Refer to
• Check the ink cartridges. If any cartridges have run out of ink,
replace them.
• Check that the carriage-head flat cable is connected to the
carriage PCB.
• Replace the head/carriage unit.
• Check the connection of the head flat cables on the main PCB.
(If either of those cables is broken or damaged, replace it.)
• Replace the main PCB.
• Clean the head caps and wiper of the maintenance unit with a
Rubycel stick. For the cleaning procedure, refer to
Section 8.2 "CLEANING THE MAINTENANCE UNIT."
• Replace the maintenance unit.
Summary of Contents for MFC 685CW - Color Inkjet - All-in-One
Page 7: ...v Confidential ...
Page 8: ...vi Confidential ...
Page 9: ...vii Confidential ...
Page 10: ...viii Confidential ...
Page 11: ...ix Confidential Legal limitations for copying ...
Page 12: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Page 18: ...1 5 Confidential ...
Page 19: ...1 6 Confidential ...
Page 20: ...1 7 Confidential ...
Page 23: ...1 10 Confidential ...
Page 30: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 50: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 99: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Page 152: ...Confidential CHAPTER 5 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 156: ...5 3 Confidential Cover page sample End page sample ...
Page 157: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 250: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 263: ...7 11 Confidential Head Positioning Test Pattern ...
Page 267: ...7 15 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 268: ...7 16 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 270: ...7 18 Confidential Vertical Alignment Check Patterns 600DPI 1200DPI ...
Page 273: ...7 21 Confidential Margin Check Pattern ...
Page 288: ...Confidential CHAPTER 8 CLEANING ...
Page 292: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Page 300: ...9 6 Confidential Scanning Compensation Data List a b c d e f i ...
Page 303: ...9 9 Confidential Test Pattern ...
Page 308: ...9 14 Confidential Configuration List ...
Page 315: ...9 21 Confidential Cover page sample End page sample ...
Page 320: ...9 26 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 321: ...9 27 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 326: ...9 32 Confidential Vertical Alignment Check Patterns 600DPI 1200DPI ...
Page 329: ...9 35 Confidential Margin Check Pattern ...
Page 448: ...Confidential B Power supply PCB U S A and Canadian models ...
Page 449: ...Confidential B Power supply PCB European Asian and Oceanian models ...
Page 453: ...Confidential May 07 SM FAX067 8CAE03 1 Printed in Japan ...