HP L26500/L28500 User Manual download pdf (Page 36)

14. Open the ink filter cover.

15. Remove the old ink filter and insert a new one.

16. Close the ink filter cover.

17. Close and lock the window.

Replace a printhead

Remove a printhead

On the printer's front panel, select the

icon, then select Replace printheads.

2. The carriage moves to the removal position.

CAUTION: If the carriage remains in the removal position for more than 3 minutes without

inserting or removing any printheads, it will attempt to return back to its home position to the right.

30 Chapter 4 Hardware maintenance ENWW

Maintain hardware

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 95 96

Table of contents 3
1 Safety precautions 7
Heat hazard 8
Fire hazard 8
Mechanical hazard 9
Heavy substrate hazard 9
Ink handling 9
Warnings and cautions 9
Warning labels 10
2 Printer status 11
Ink menu procedure 12
Check the file system 13
Printer alerts 13
3 Firmware update 14
4 Hardware maintenance 15
Check substrate porosity 16
Maintain hardware 17
Clean the platen 21
Clean after porous substrates 24
Lubricate the platen rollers 26
Maintain the ink cartridges 28
Move or store the printer 28
Replace an ink cartridge 29
Replace a printhead 36
Service maintenance 46
5 Substrate settings 47
Substrate settings 48
Advanced settings 52
Temperature profile 54
Select the number of passes 54
Faster printing 57
Color calibration 57
Color profiles 58
Color reproduction tricks 59
General printing advice 60
Use the printhead status plot 60
Graininess 61
Horizontal banding 62
Adjust the substrate advance 63
Vertical banding 64
Misaligned colors 65
Color intensity varies 65
Lack of sharpness 66
Black areas look hazy 66
Ink smears 67
Troubleshoot images 68
Tiling issues 69
Troubleshoot substrate 70
The substrate has jammed 71
Avoiding substrate jams 73
Take-up reel substrate jam 75
Take-up reel does not wind 76
Cannot insert a printhead 78
Clean the printheads 79
Align the printheads 79
Reinsert printheads procedure 80
Scan errors during alignment 81
9 Troubleshoot other issues 82
The printer is not printing 83
The printer seems slow 83
Troubleshoot other 84
The platen rollers squeak 85
10 Front-panel error messages 86
Error messages 87
Printer logs 91
11 When you need help 92
HP Customer Care Centers 93
Service information 93
A Summary of common printing 94

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HP L26500/L28500 User Manual Page 36

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