
4-51
Confidential
[ 4 ] Auto document feeder (ADF) malfunction
An ADF failure may occur not only due to machine malfunction but also to the user's actions.
Problems due to the user's actions
Problems due to machine malfunction
Check
Possible causes
Problems that may result
Document guides
The document guides are not positioned
to match the width of document(s)
loaded.
Documents will skew.
Inside the ADF
- Foreign materials have found their
way into ADF.
- The size of the document loaded is
smaller than the specified size.
Foreign materials can hinder
document feeding.
The document will jam inside the
ADF.
Check
Possible causes
Problems that may result
ADF
The spring plates of the ADF parts are
deformed.
A document will stop halfway
through feeding.
The ADF parts are deformed or worn.
Two or more sheets of documents
will be fed through at once.
Document front sensor - The document front sensor is
defective.
- The document front sensor actuator is
deformed.
No document will be drawn in or
recognized by the machine.
Even placing a document in the
ADF cannot switch to "ADF
scanning."
Document rear sensor
- The document rear sensor is defective.
- The document rear sensor actuator is
deformed.
A document will stop halfway
through feeding or will not be
recognized by the machine.
Document width
sensor
- The document width sensor is
defective.
- The document width sensor actuator is
deformed.
A document will stop halfway
through feeding or will not be
recognized by the machine.
Even if an A3- or B4-sized
document is placed in the ADF,
the machine scans only the A4-
sized area in width.
ADF motor
The ADF motor does not rotate.
No document will be drawn in.
Main PCB
The motor driver IC is defective.
No document will be drawn in.
Содержание DCP-6690CW
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Страница 53: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 110: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 114: ...4 2 Confidential 1 Error messages appearing on the LCD ...
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Страница 172: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Страница 179: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 292: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 299: ...7 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Страница 308: ...7 14 Confidential Head Positioning Test Pattern ...
Страница 314: ...7 20 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 315: ...7 21 Confidential Paper Feeding Check Pattern for the Paper Feed Roller Paper Tray 2 ...
Страница 317: ...7 23 Confidential Vertical Alignment Check Patterns 2 2 ...
Страница 321: ...7 27 Confidential Left and Right Margin Check Pattern ...
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Страница 333: ...7 39 Confidential ADF Copy Chart A B C D ...
Страница 337: ...Confidential CHAPTER 8 CLEANING ...
Страница 341: ...8 3 Confidential Maintenance unit Head caps Head wiper cleaning_BHM9_E Rubycel stick ...
Страница 344: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Страница 353: ...9 7 Confidential Scanning Compensation Data List ...
Страница 356: ...9 10 Confidential Test Pattern ...
Страница 361: ...9 15 Confidential Configuration List ...
Страница 379: ...9 33 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 380: ...9 34 Confidential Paper Feeding Check Pattern for the Paper Feed Roller Paper Tray 2 ...
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Страница 421: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Страница 502: ...App 6 4 Confidential B Power supply PCB 100 V series ...
Страница 503: ...App 6 5 Confidential B Power supply PCB 200 V series ...