Zenith XBR411 - Page 78

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