HP 1055CMHP - Manual (Page 88)

Service Tests and Utilities
4-14
HP DesignJets 1050C and 1055CM Printers Service Manual
4. Ink Pressure System
The purpose of this test is to verify the operation of the:
n Tubes System.
n Air Pressurization System (APS).
WARNING IF POSSIBLE ALWAYS PERFORM THIS TEST BEFORE
REPLACING THE TUBES SYSTEM OR THE APS. IF THIS
TEST PASSES, DO NOT REPLACE THE TUBES SYSTEM
OR THE APS.
NOTE The Service Tests work in a special Mode which does NOT
require the full Initialization of the Printer. Therefore it is
important that once you have finished with the Service Test, you
MUST power OFF the Printer and Power ON again before
trying to print.
Perform the Ink Pressure System test as follows:
1 In the Service Tests submenu, scroll to "4. Ink Pressure System" and
press Enter.
2 The test will start and the following sequence of messages will
appear on the front panel:
Service Tests
3. Hard Disk Drive
2. EIO Card
4. Ink Pressure System
5. Scan Axis
Top
Enter
Back
↑
↓
Press Enter
1. Electronic Systems
Make Selection
INK PRESSURE SYSTEM
Running SRK Test...
INK PRESSURE SYSTEM
Running APS Test...