KDL-70X4500 (serv.man3) - Sony TV Service Manual (repair manual). Page 21

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KDL-70X4500 (K)     2-8
7) B alancer Error (R ED 13 tim es blink )
This indicates Inverter board error of panel module.
BE micro pin163 on FBU board detects it.
BE Micro pin163    Normal condition : High / Error case : Low
Check harness connection between CN 9700, 9701 on CF1 board and panel module.
6) FAN  Error (R ED 9 tim es blink )
This indicates  FAN error. (except 40 inch model)
BE micro pin154 on FBU board detects it.
BE Micro pin154   Normal condition : Low / Error case : High
   - Check the harnessconnection of FAN.
   - Check the Voltage at CN1301 on AU board. ( Low = Error , High = Normal)
Replace the FAN. 
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