user manual

Service Tests and Utilities
4-3
HP DesignJets 1050C and 1055CM Printers Service Manual
Service Tests (Diagnostics)
The following is a list of all internal Service Tests available in the
Printer. Instructions for entering the Service Tests menu are given
on Page 4-4.
WARNING 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 Tests, you
MUST power OFF the Printer and Power ON again before
trying to print.
1 Electronics System ⇒ Page 4-5
The purpose of this test is to verify the operation of the:
Electronics Module.
DRAM.
Trailing Cable.
Carriage Assembly.
2 EIO Card ⇒ Page 4-10
The purpose of this test is to verify the operation of the EIO Card.
3 Hard Disk Drive ⇒ Page 4-12
The purpose of this test is to verify the operation of the Hard Disk
Drive.
4 Ink Pressure System ⇒ Page 4-14
The purpose of this test is to verify the operation of the:
Service Replaceable Kit (SRK).
Air Pressurization System (APS).
5 Scan Axis ⇒ Page 4-17
The purpose of this test is to verify the operation of the Scan-Axis.
6 Paper Axis ⇒ Page 4-20
The purpose of this test is to verify the operation of the Paper-Axis.
7 Drop Detector ⇒ Page 4-22
The purpose of this test is to verify the operation of the Drop
Detector.