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HP Designjet L25500 HP Designjet L25500 Printer Series - Maintenance and troub - Page 24

Lubricate the platen rollers - user maintenance kit

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4. Apply a few drops of oil directly to the slider rod on either side of the carriage. Press OK when this has been done. 5. Clean the substrate jam reflector using a lint-free cloth dampened with distilled water. If you find dried ink that you cannot remove, try using a lint-free cloth dampened with isopropyl alcohol. Press OK when this has been done. 6. If the front panel prompts you to oil the rollers, see Lubricate the platen rollers on page 18. Press OK when this has been done. 7. Close and lock the printer window. Lubricate the platen rollers If you notice that the platen rollers are squeaking, it is time to lubricate them. Locate the oil bottle in the User Maintenance Kit that came with your printer. 1. Unlock and open the printer window. Hardware maintenance 18 Chapter 4 Hardware maintenance ENWW

Section	Page
Safety precautions	7
General safety guidelines	7
Electrical shock hazard	7
Heat hazard	8
Fire hazard	8
Mechanical hazard	8
Heavy substrate hazard	9
Ink handling	9
Warnings and cautions	9
Warning labels	9
Printer status	11
Check printer status	11
Check the status of the ink system	11
Check the status of the ink cartridges	11
Ink menu procedure	12
Check the status of a printhead	12
Check the file system	13
Check printer usage statistics	13
Printer statistics with the Embedded Web Server	13
Printer alerts	13
Firmware update	15
Hardware maintenance	16
Align the printheads	16
Automatic alignment	16
Manual alignment	16
Clean the electrical connections on a printhead	17
Clean the exterior of the printer	20
Clean the platen	20
Clean (recover) the printheads	22
Clean the substrate-advance sensor window	22
Lubricate the printhead carriage	23
Lubricate the platen rollers	24
Maintain the ink cartridges	26
Move or store the printer	26
Service maintenance	26
Use the printhead status plot	27
Print the printhead status plot	27
Interpret the printhead status plot	27
Corrective action	28
What to do if problems persist	28
Troubleshoot print-quality issues	29
General advice	29
Graininess	30
Horizontal banding	30
Adjust the substrate advance	31
Substrate advance adjustment on the fly	31
Vertical banding	32
Misaligned colors	32
Lack of sharpness	33
Black areas look hazy	33
Subtle stains or uneven appearance	33
The ink smudges when touched, or looks oily	33
The total length of the print is wrong or inconsistent	33
Troubleshoot substrate issues	35
The substrate cannot be loaded successfully	35
The substrate has jammed	35
Check the substrate path	35
Check the printhead path	36
Avoiding substrate jams	37
The substrate is deformed or wrinkled	37
The automatic cutter does not work	37
Take-up reel substrate jam	38
Take-up reel does not wind	38
Troubleshoot ink-system issues	40
Cannot insert an ink cartridge	40
Cannot insert a printhead	40
Cannot insert the printhead cleaning cartridge	40
Front panel recommends reseating or replacing a printhead	40
Clean the printheads	40
Align the printheads	41
Reinsert printheads procedure	41
Image Quality Maintenance menu procedure	42
Scan errors during alignment	42
Troubleshoot other issues	44
The printer cannot get an IP address	44
Cannot access the Embedded Web Server	44
The printer is not printing	45
The software program slows down or stalls while generating the print job	45
The printer seems slow	45
Cannot access files on the hard disk	45
Communication failures between computer and printer	46
“Out-of-memory” error message	46
The platen rollers squeak	46
Front-panel error messages	47
When you need help	52
Introduction	52
Documentation	52
HP Instant Support	52
HP Customer Care Centers	53
Service information	58