HP 1050c Service Manual - Page 77

Service Tests and Utilities Service Tests (Diagnostics) WARNING 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. 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: n Electronics Module. n DRAM. n Trailing Cable. n 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: n Service Replaceable Kit (SRK). n 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. HP DesignJets 1050C and 1055CM Printers Service Manual 4-3