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86
Phaser 840 and 850 Color Printers
6.
Check for
Service Required ...
errors. After installing the
printhead, you may get one of the following service errors due to mis-
adjustment or cabling problems:
■
4,002.41 and 4,006.45 errors: printhead NVRAM all zeroes. If the data
cable between the power control board and the printhead is not plugged
in properly or damaged, this error will occur. Reseat or replace the data
cable.
■
13,003.33 and 13,035.47 errors: A heater is running away. If the gray data
cable is not making a good connection, the incorrect data will be sent to
the main board. Reseat or replace the printhead ribbon cable before
replacing the printhead.
■
13,004.43 or 13,020.41 errors: The printhead jet stack is not heating as
quickly as it should. Readjust the left or right head-to-drum adjustment;
the printhead is too close to the drum, which prevents it from warming
up. If the error reoccurs after the adjustment, replace the printhead.
■
13,001.40 and 13,017.47: An open left and right jet stack thermistor.
Reseat or replace the gray data cable. If the error reoccurs, replace
printhead. If the new printhead gives the same error, replace the power
control board.
Damaged printhead data cable
Summary of Contents for Phaser 840
Page 11: ...xii Phaser 840 and 850 Color Printers ...
Page 65: ...54 Phaser 840 and 850 Color Printers ...
Page 101: ...90 Phaser 840 and 850 Color Printers ...
Page 125: ...114 Phaser 840 and 850 Color Printers ...
Page 134: ...Service Guide 123 Clearing PostScript NVRAM menu item ...
Page 135: ...124 Phaser 840 and 850 Color Printers ...
Page 166: ...Service Guide 155 Figure 1 Cabinet FRUs 7 5 6 8 1 2 4 0388 21 3 9 9 ...
Page 170: ...Service Guide 159 Figure 3 Paper path FRUs 0388 80 2 1 5 11 10 9 12 6 4 3 7 13 8 11a 11b ...
Page 172: ...Service Guide 161 Figure 4 Motor and fan FRUs 0388 14 7 4 3 5 6 2 1 ...
Page 174: ...Service Guide 163 Figure 5 Circuit board FRUs 4 3 5 2 1 9 7 6 8 10 11 13 0388 81 12 7a ...
Page 176: ...Service Guide 165 Figure 6 Solenoid and clutch FRUs 4 5 3 2 1 0388 23 ...
Page 182: ...Service Guide 171 Figure 9 High capacity PaperTray 0388 65a 1 2 ...