29Diagnostic The HT580 has a bult-n dagnostcs program to test the termnal’s hardware. The testroutnes are data destructve. Therefore, before runnng the dagnostc program, makesure you back up the data on the HT580.NOTE: When a hardware or software servce has been made on the HT850, such asmantenance, repar or upgrade, t s strongly recommended to run the dagnostc program.ITEM DESCRIPTIONVER Display firmware version for the HT580 and Decoder.SCAN Tests barcode nput by scannng barcode labels. Press the ESC key toreturn to the dagnostcs menu.LCD Darken the dots of the LCD screen and cycle power to the LCD backlghtto check f the LCD functons OKCOMM Connect to the PC’s communcaton testng program to test the USB/RS232 communcatonPWR Tests Battery powerKEY Tests every key responseRTC Current tme/date s dsplayedMEM Tests RAM condtonChapter 2 Using the Hardware1. VER 2. SCAN3. LCD 4. COMM5. PWR 6. KEY7. RTC 8. MEM