User's Guide - LINX Data Terminals

Linx7-5 User DiagnosticsKeypad/Barcode/MSR TestNOTE: If a proximityreader is connected and is“enabled”, this test willalso verify prox operation.This test will echo all keypad keys, barcode and magnetic swipe data to the LCD display.Display TestThis test will display all displayable characters on the LCD display.Destructive DRAM TestThis test will verify that the SDRAM memory can be tested with the following data patterns:DATA: 0x55555555, 0xAAAAAAAA, 0x00000000Destructive SRAM TestWARNING: Since theSRAM contains theterminal configurationparameters, a power cycleMUST be performed afterthis test:On Power-on, the “BootDiagnostics” will execute(as described in thePreface) and the terminalwill boot up normally butwith “default” parameters.Consequently, the userMUST enter Setup beforeusing the terminal.This test will verify that the SRAM memory can be tested with the following data patterns:DATA: 0x55555555, 0xAAAAAAAA, 0x00000000LINX 7-5 User's Guide Linx7-5 User Diagnostics • 23