3
11.1. Simple check…………………………………………………………..…………...53
11.2. PSU failure check…………………………………………………..………………54
11.3. DC/DC board failure check………………………………………………...……...55
11.4. Main board failure check…………………………………………………………. .55
11.5. Pannel failure ……………..…………………………………………………………57
12. MAINTENANCE……………………………………………………………………………60
