HP 1050c Service Manual - Page 80

Service Tests and Utilities Perform the Electronic Systems test as follows: 1 In the Service Tests submenu, scroll to "1. Electronic Systems" and press Enter. Service Tests 1. Electronic Systems 2. EIO Card 3. Hard Disk Drive 4. Ink Pressure System 5. Scan Axis Top Back ↑ Make Selection ↓ Enter Press Enter 2 The test will start and the following sequence of messages will appear on the front panel: ELECTRONIC SYSTEMS Running Electronics Module Test XXXXXXXX ELECTRONIC SYSTEMS Running DRAM Test XXXXXXXX XXXXXXXX EEROM functionality ACMEEP DMA functionality Fans test Main PCA to ISS Communication ISS shift register XXXXXXXX DRAM access functionality ELECTRONIC SYSTEMS Running Carriage Test XXXXXXXX XXXXXXXX XXXXXXXX Trailing Cable Test Yuyu R/W Carriage ADC Pen Continuity Digital Cyan / Magenta / Yellow / Black PEN ACUMEN Pen Digital functionality Pen Analog Continuity VPP regulation Cyan / Magenta / Yellow / Black Line Sensor zero test 4-6 HP DesignJets 1050C and 1055CM Printers Service Manual