HP 1055CMHP - Manual (Page 96)

Service Tests and Utilities
4-22
HP DesignJets 1050C and 1055CM Printers Service Manual
7. Drop Detector
The purpose of this test is to verify the operation of the Drop
Detector.
WARNING IF POSSIBLE ALWAYS PERFORM THIS TEST BEFORE
REPLACING THE DROP DETECTOR. IF THIS TEST
PASSES, DO NOT REPLACE THE DROP DETECTOR.
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 Drop Detector test as follows:
1 In the Service Tests submenu, scroll to "7. Drop Detector" and press
Enter.
2 The test will start to initialize and the following message will appear
on the front panel:
Service Tests
5. Scan Axis
4. Ink Pressure System
6. Paper Axis
7. Drop Detector
Top
Enter
Back
↑
↓
Press Enter
3. Hard Disk Drive
Make Selection
DROP DETECTOR TEST
Initializing
in Tclware (90s)...
Close any open door