this symbol have critical characteristics.ment parts recommended by the manufacture.e unit to the customer, make sure you make either (1) aeck or (2) a line to chassis resistance check. If the leakage5 milliamps, or if the resistance from chassis to either sides less than 460 kohms, the unit is defective.unit to the customer until the problem is located andSCHEMATIC DIAGRAMS (13/15)1U-3319-2 C.VIDEO UNIT1U-3319-3 COMP. -VIDEO UNIT+ B LINESIGNALwww . x i a o y u 1 6 3 . c o mQ Q 3 7 6 3 1 5 1 5 0 992894298T E L 1 3 9 4 2 2 9 6 5 1 3 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com