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Print quality problems (Continued)
Problem | Cause / action | ||
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Unexpected | • | Ensure correct printer driver is being used. | |
characters print, or | • | Select hex trace mode to determine what the problem is. | |
characters are | • | Restore factory defaults. | |
missing. | |||
• | Make sure the parallel cable or USB cable is firmly plugged in at the back of the printer. | ||
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Jobs are not printing, | • | The printer is waiting for an appropriate command. | |
and an error message | • | Make sure the print cartridge assembly is installed properly. | |
is displayed. | • | Make sure the printer front cover is closed. | |
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While in PostScript 3 | • | Ensure the correct PostScript driver is being used. | |
emulation, the printer | • | The printer doesn’t have enough memory to print the job. Install more memory. | |
is flushing data (an |
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error message is |
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displayed). |
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Printhead service check |
FRU | Action | |
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| Turn the printer off. | |
| Disconnect the printhead cables from J8 and J100 on the controller board. | |
| Turn the printer on with the front door closed. | |
| On the controller board, verify +5 V dc on pin 10 at J8 and +5 V dc on pins 1, 2, and 3 at | |
Printhead | J100. | |
Note: New printhead | Verify grounds on pins 2, 4, and 7 at J8 and on pin 4 at J100. | |
must be aligned. See | • If voltages or grounds are incorrect, then check the controller board. See “Controller | |
“Printhead assembly | board service check” on page | |
electronic | • If voltages are correct, then replace the printhead (comes with cables). | |
adjustment” on | ||
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page |
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Transfer roll service check | ||
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FRU | Action | |
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| Note: Do not touch the transfer roll except at its ends. Place a sheet of paper over the roll to | |
| prevent damage from finger oils or hand lotion. | |
| Check the springs in the left and right transfer roll bearings. Do not try to move the left | |
| spring. The bearing assemblies should support the transfer roll, applying evenly distributed | |
| forces to the PC drum. | |
Transfer roll | Replace the transfer roll assembly if the springs or bearings show signs of damage, or | |
| fatigue. | |
| Inspect the transfer roll for signs of wear, damage or contamination. | |
| Replace as necessary. | |
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Diagnostics information