12. OPTIONAL EQUIPMENT .............................................................. 67
12.1. Integrated UPS (optional) ....................................................... 67
12.1.1. Battery pack specifications .................................................... 68
12.1.2. Charging the battery pack ..................................................... 69
12.1.3. Replacing the battery pack .................................................... 69
12.2. Screen defroster (optional) ..................................................... 71
12.3. Integrated low profile Wi-Fi antenna (optional) ....................... 72
12.4. External Wi-Fi antenna, remote (optional) .............................. 73
12.5. Wi-Fi card (optional) ............................................................... 74
12.6. Micro Bluetooth adapter (optional) ......................................... 74
12.7. GPS receiver (optional) .......................................................... 75
12.8. Keyboards and keyboard mounts (optional) ........................... 76
12.9. Scanner and scanner bracket (optional)................................. 77
12.10. Touch stylus ............................................................................ 78
12.11. USB recovery stick (optional) ................................................. 78
12.12. Protective film for touchscreen (optional) ............................... 79
12.13. Screen blanking (optional) ...................................................... 79
13. MAINTENANCE ............................................................................ 80
13.1. Do not repair or modify ........................................................... 80
13.2. Replacing the integrated keyboard of the DLT-V7210K ......... 80
13.2.1. Remove the integrated keyboard .......................................... 81
13.2.2. Attach the integrated keyboard ............................................. 81
13.3. Regular checks and maintenance of the complete system .... 83
13.4. Replacing the battery pack ..................................................... 83
13.5. Cleaning the DLT-V72 ............................................................ 83
14. MALFUNCTIONS AND TROUBLESHOOTING ........................... 85
15. REASONABLY FORESEEABLE MISUSE................................... 87
16. GUIDELINES AND CERTIFICATES............................................. 88
16.1. EC Europe .............................................................................. 88
16.2. USA/CANADA ........................................................................ 89
16.3. China ...................................................................................... 90
16.4. Taiwan .................................................................................... 90
16.5. MIC Japan (previously TELEC) .............................................. 90
17. END-OF-LIFE DEVICE DISPOSAL .............................................. 91
18. TECHNICAL CUSTOMER SUPPORT .......................................... 92
19. RETURN SHIPMENT FORM ........................................................ 93
20. LIST OF FIGURES ........................................................................ 94