Zenith XBR411 Manual page 78

Sled operating is abnormal
Is there sled
control signal output?
(IC107 pin 8,9)
YES
Is there
sled drive signal input?
(IC102 pin 29, 30)
YES
Is there
sled drive voltage output?
(IC102 pin 37~40)
YES
Is there
sled drive voltage output?
(CN100 pin 1,2,3,4)
NO
Check the connection CN102.
NO
Replace the IC107
•Check the connection of IC105 pin 29, 30.
NO
•Replace the IC102.
•Check the R130, R131.
Is DRV-CTRL1
NO
(IC102 pin35)
Replace the IC102
•Check the connection of IC301 pin 91.
•Replace the IC301.
YES
Replace the sled motor.
3-101
signal "H"?
YES
NO