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3-13
Confidential
[ 3 ] Head/carriage unit
The head/carriage unit consists of a front end (ink-jet head) and a back end (buffer and air vent
unit).
The front end consists of metal plates laminated together and etched to form ink flow channels.
(See illustration.)
Piezoelectric ceramic actuators generate the spray pressure. The response of individual front ends
to applied voltages and waveforms varies, however, because of the nature of piezoelectric materials,
fluctuation in manufacturing accuracy, and other factors. The front end therefore leaves the
production line with a bar code giving property data. The manufacturer writes this data to the
EEPROM on the main PCB incorporating this unit to insure consistent performance without
fluctuations.
These labels appear on the head/carriage unit itself and on the lower cover of the machine.
Replacing the head/carriage unit requires writing 12 of the 13 property data digits on the label
included with the new unit into the EEPROM with maintenance mode function code 68 and
applying the new property label on the lower cover. Replacing the main PCB requires similar
property data updates.
Front end
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Summary of Contents for DCP-110C
Page 10: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 14: ...1 3 Confidential 1 2 CONTROL PANEL MFC620CN FAX2440C ...
Page 17: ...1 6 Confidential MFC210C ...
Page 21: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 87: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 131: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 136: ...Confidential CHAPTER 55 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 212: ...5 74 Confidential Routing C Backup battery harness and ink supply tubes MFC620CN and FAX2440C ...
Page 214: ...5 76 Confidential Viewed from the left ...
Page 220: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 240: ...6 18 Confidential Vertical Alignment Check Patterns ...
Page 243: ...6 21 Confidential Margin Check Pattern ...
Page 253: ...Confidential CHAPTER 7 CLEANING ...
Page 256: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 267: ...8 9 Confidential Scanning Compensation Data List a b c d e f i ...
Page 274: ...8 16 Confidential Configuration List ...
Page 294: ...8 36 Confidential 1st sheet 2nd sheet Vertical Alignment Check Patterns ...
Page 297: ...8 39 Confidential Margin Check Pattern ...
Page 311: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 362: ...App 1 2 Confidential 2 Head property label Property label for the head carriage unit Location ...
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Page 466: ...Confidential February 05 SM FAX028 8CA811 8 Printed in Japan ...