HP Designjet 8000s Maintenance Guide

HP Designjet 8000s Printer series

Printer Maintenance Guide

Legal notices

The information contained in this document
is subject to change without notice.

Hewlett-Packard makes no warranty of any
kind with regard to this material, including,
but not limited to, the implied warranties of
merchantability and fitness for a particular
purpose.

Hewlett-Packard shall not be liable for errors
contained herein or for incidental or
consequential damages in connection with
the furnishing, performance, or use of this
material.

No part of this document may be
photocopied or translated to another
language without the prior written consent of
Hewlett-Packard Company.

Table of contents

1 Introduction

2 Regular maintenance guide

Daily maintenance ................................................................................................................................ 4

Capping unit cleaning .......................................................................................................... 5

Wiper liquid bottle replacement .......................................................................................................... 10

Wiper sponge replacement ................................................................................................................ 15

Wiper blade replacement ................................................................................................................... 21

When returning to the printer after being switched off for an extended period (less than two

weeks) ................................................................................................................................................ 26

Clean ink system ............................................................................................................... 26

Prepare for extended power down (two to four weeks) ...................................................................... 27

Ink system storage ............................................................................................................. 28

Charge the ink system ........................................................................................................................ 29

Clean the exterior of the printer .......................................................................................................... 30

Clean the carriage base ..................................................................................................................... 30

Clean the front cover and media feed ................................................................................................ 32

Clean the platen ................................................................................................................................. 32

Waste ink bottle replacement ............................................................................................................. 33

Normal printhead recovery ................................................................................................................. 36

Print the nozzle print pattern .............................................................................................................. 38

ENWW iii

iv ENWW

1Introduction

This Printer Maintenance Guide describes the regular inspection and maintenance procedures to be
performed by users. The maintenance procedures described in this maintenance guide are also
available in your printer's User's Guide. Failure to perform daily maintenance procedures may result in
damage to your printer printheads and will invalidate your warranty. For further user information about
the HP Designjet 8000s Printer series, please refer to the User's Guide and warranty information that
came with your printer.

Before starting the maintenance procedures, spend some time reading the safety precautions and notes
which are contained in the User's Guide.

WARNING! Never switch off the printer without following the correct procedures. Even with the

storage liquid installed, never leave the printer off for more than four weeks. Leaving your printer
off for more than four weeks can cause permanent damage that cannot be repaired. In all other
cases make sure you observe the appropriate maintenance guidelines.

Introduction

CAUTION The printer has an internal clock which allows it to wash the printheads automatically,

flushing some ink through the printheads, which keeps the printheads in good condition. The
printer automatically washes the printheads regularly after the last printing process. If the printer
is switched off or media is not loaded, this process does not happen. If the ink does not flow
through the printheads from time to time, the ink will dry inside the nozzles, reaching a point where
it is impossible to recover them and the printheads will fail. If the printer must be switched off for
a long period of time, the customer must use either the optional HP Ink System Cleaning Kit or
HP 780 Ink System Storage Kit to recover or protect the printheads.

Automatic maintenance and cleaning will ONLY be performed when the printer is switched on
and powered up with media loaded. If you switch it off on the front panel or with the power switch
on the rear of the printer this maintenance will NOT be performed.

ENWW 1

Introduction

2 Chapter 1 Introduction ENWW

2 Regular maintenance guide

The printer requires regular inspection and maintenance. The table below lists all regular inspection and
maintenance procedures. For details on each procedure, see the reference to the procedure.

Maintenance checklist

Category Inspection/Maintenance See

Daily Capping unit cleaning

Checking wiper liquid level

Checking waste ink bottle level

Printhead cleaning

Nozzle print

Monthly Wiper Liquid bottle replacement

Printhead cleaning

Depending on printer usage,
approximately every three months

Every six months Wiper sponge replacement Wiper sponge replacement

To leave the printer for an extended
period in the power off state (more than
two weeks but less then four weeks)

When returning the printer from an
extended period in the power off state
(more than two weeks but less then four
weeks)

Wiper Blade replacement Wiper blade replacement

Clean ink system

Ink system storage

Clean ink system

Ink charge after cleaning

Capping unit cleaning

Wiper liquid bottle replacement

Waste ink bottle replacement

Normal printhead recovery

Print the nozzle print pattern

Wiper liquid bottle replacement

Normal printhead recovery

Clean ink system

Ink system storage after cleaning the ink

system

Clean ink system

Charge the ink system after cleaning the

ink system

guide

Regular maintenance

When returning to the printer after being
switched off for an extended period (less
than two weeks)

To leave the printer in or return it from a
power off state of more than four weeks

Other A service call error message will be

Clean ink system

Ink charge after cleaning

Contact HP Support.

displayed on the front panel. Contact HP
Support.

Clean ink system

Charge the ink system

ENWW 3

CAUTION The use of safety glasses and gloves is recommended when performing cleaning

and maintenance operations.

Always use genuine HP cleaning kits. These have been designed for maintaining high-quality
imaging performance and reliable printer operation. Using non-HP supplies may cause poor print
quality, printer malfunction, printer failure, or a safety hazard.

Daily maintenance

Regular maintenance

guide

WARNING! Failure to perform daily maintenance procedures may result in damage to your

printheads and will invalidate your warranty.

CAUTION If you need to leave the printer unattended for any reason, ensure that the printer

is on, the ink cartridges are full, the waste ink bottle is empty, and media is loaded so that

automatic maintenance (performed regularly after the last printing process) can be completed
successfully for the time you are not present. If needed, install new ink cartridges. The ink
cartridges that you replace can be reused when you return to your printer, if they still contain ink.
The ink cartridges must be stored properly and should not be used again if 3 months passed the
install by date (on the product label).

Daily printhead maintenance will ensure optimal print quality and the life of your printheads. The ink in
your HP Designjet 8000s Printer dries very quickly, so maintenance procedures ensure that the ink does
not dry in the capping unit, the wiper blades, the ink tubes and printheads.

When the following message is displayed, immediately perform daily maintenance procedures:

Clean the capping unit.

●

Check the wiper liquid level.

●

Check the waste ink bottle level

●

Perform Normal printhead cleaning

●

Print the NOZZLE PRINT pattern

●

NOTE Perform the above every day before printing.

Always use the specified cleaning liquid and cleaning equipment.

4 Chapter 2 Regular maintenance guide ENWW

Capping unit cleaning

This cleaning procedure will remove any dried ink and particles from the capping unit.

1. Open the cleaning kit drawer (1).

2. Remove the HP 780 Cap Cleaning Kit from the drawer.

guide

Regular maintenance

NOTE The HP 790 Cap Cleaning Kit can also be used. The HP 790 Cap Cleaning Kit

comes with swabs only (no rollers).

1. Cap cleaning liquid.

2. Cap cleaning handle.

3. Cap cleaning roller.

4. Cleaning swab.

5. Disposable latex or Nitrile(R) safety gloves.

3. Put on disposable latex or Nitrile(R) safety gloves.

4. Clip a new cap cleaning roller onto the cap cleaning handle.

ENWW Daily maintenance 5

Regular maintenance

guide

5. Dip the cap cleaning roller (1) into the cap cleaning liquid (2).

CAUTION Make sure that you use the cap cleaning liquid and not the wiper cleaning liquid

to clean the capping unit, otherwise you could cause damage to the printheads.

6. Press the ONLINE key to set the printer offline.

7. Press the SHIFT key to display the PH. MAIN menu.

8. Press the key to select the PH. MAIN menu.

9. Scroll to the CAP CLEANING option using the

10. Press OK again to confirm your selection.

The carriage will automatically move to the left side of the printer so that the capping unit can easily
be accessed. The front panel displays CARRIAGE MOVING — PLEASE WAIT .

CAUTION Some types of media are prone to cockling in the area adjacent to the heaters

if left stationary for any length of time. Consequently it is good practice to feed approximately
20 cm of media through the printer before starting the cap cleaning to avoid any possible
damage to the printheads that could be caused by them touching any raised areas of the
media.

key and press OK to select.

Once the carriage is out of the capping unit, the cleaning procedure must be done as quickly
as possible so as not to permanently damage the printheads. The printer issues an audio
warning beep throughout the procedure.

6 Chapter 2 Regular maintenance guide ENWW

11. When the following message is displayed, open the front cover (1).

12. Open the right maintenance cover (1).

guide

Regular maintenance

13. Clean the top surfaces of all six caps as follows:

a. Moisten each cap by rolling over the cap once backwards and forwards, and then;

ENWW Daily maintenance 7

Regular maintenance

guide

b. Clean each cap (1) by rolling over the cap ten times each.

14. If the caps are still not clean, or there are particles around the edges, then clean as follows:

a. Dip a new cleaning swab (1) into the cap cleaning liquid (2).

CAUTION Make sure that you use the cap cleaning liquid and not the wiper cleaning

liquid to clean the capping unit, otherwise you could cause damage to the printheads.

8 Chapter 2 Regular maintenance guide ENWW

b. Clean the top outside edges and the upper surfaces of all six caps.

15. Close the right maintenance cover (1).

guide

Regular maintenance

16. Close the front cover (1).

The printhead carriage will return to the right maintenance area (home position) automatically.

NOTE Use the NOZZLE PRINT to check that there are no printhead nozzles out after cap

cleaning.

ENWW Daily maintenance 9

Wiper liquid bottle replacement

NOTE When the wiper liquid has been installed for some time the liquid will no longer be clear.

This is quite normal because the liquid becomes tinted as it is used to clean the wiper blade.

Wiper liquid ensures that the wiper blade can correctly clean the printheads. The wiper liquid level should
be checked every month or when the following message is displayed:

Regular maintenance

guide

WARNING! Make sure that the wiper liquid does not drip onto other parts of the printer.

1. Press the ONLINE key.

2. Press the SHIFT key to display the PH. MAIN menu.

3. Press the key to select the PH. MAIN menu.

4. Scroll to the REPLACE WIPE LIQUID option using the

5. Press OK again to confirm your selection.

6. When the following message is displayed, open the front cover (1).

key and press OK to select.

10 Chapter 2 Regular maintenance guide ENWW