NCR PC4i Service Manual
Also see for PC4I: Technical referenceService manualOwner's manual
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Contents
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Chapter 4 Level 1 DiagnosticsHow to Begin Testing .......................... 4-1Load the Diskette ........................... 4-1Main Menu ..................................... 4-2Main Menu Help Screens ........................ 4-5Test Completion Displays ...................... 4-6Diagnostic Selections ......................... 4-8Run all Tests Once ........................... 4-9Automatic Completion ......................... 4-9Memory (Main Menu Selection 1) ............... 4-11Memory Test Help Screens ...................... 4-12RAM Pattern Test ............................. 4-12RAM Address Test .............................. 4-13RAM Parity Test ............................. 4-14RAM Walking Ones Test ........................ 4-15Firmware Checksum Test ........................ 4-16Controllers (Main Menu Selection 2) ........... 4-17Controllers Test Help Screens ................. 4-18CPU Test ..................................... 4-18DMA Test ...................................... 4-19Flexible Disk Controller Test ................. 4-20Interval Timer Test ........................... 4-21Interrupt Controller Test ..................... 4-22CPU Controller Test ........................... 4-23Monochrome Display Controller Test ............ 4-24Color Graphics Display Controller Test ....... 4-23Serial Synchronous Controller Test ............ 4-26Keyboard (Main Menu Selection 3) .............. 4-26Flexible Disk Drive (Main Menu Selection 4) .... 4-28Flexible Disk Drives HELP Screens ............. 4-28Read Only Drive A Test ........................ 4-29Read/Write Drive A Test ....................... 4-30Fixed Disk Drive (Main Menu Selection 5) ..... 4-31Fixed Disk Drive Test HELP S c r e e n ............ 4-32Read/Write Maintenance Track ................. 4-32Read Only Sector 0 ........................... 4-33Read Only Entire Disk ......................... 4-34Read/Write Entire Disk ........................ 4-35Fixed Disk Controller ......................... 4-38Monochrome Display (Main Menu Selection 6) ..... 4-39Color/Graphics Display (Main Menu Selection 7).. 4-41Peripherals (Main Menu Selection 8) .......... 4-47Serial Port Loopback Test ..................... 4-48Parallel Port Loopback Test ................... 4-49 |
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