Question about Mitsubishi WD-73732 73" Television
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Posted on Jan 02, 2017
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Nov 13, 2011 | Exercise & Fitness
I will try to help you, please be patience and carefully, use basics tools:screwdriver, hex,allen, Dvom.
Troubleshooting: ERR2 - Motor Movement
Since the motor moves when you press speed up, focus on the optic sensor, its wire connections, and the
optic sensor wheel. If all seems well at the sensor, inspect the motor.
??? Optic sensor wheel - Make sure that the optic sensor wheel rotates securely, without wobbling, in the
middle of the optic sensor. Realign and tighten if necessary. If optic sensor wheel teeth are missing or
bent, replace the optic sensor wheel.
??? Optic sensor wires - Make sure that wires are inserted securely to the optic sensor and to the drive board.
Check wire continuity.
??? Optic sensor - Turn on unit power. Turn the motor flywheel with your hand. The optic sensor
indicator (LED10, drive board) should light. . If it does not light, and all parts above are
good, replace the optic sensor.
??? Motor arcing - Does the motor show signs of wear - irregular arcing, carbon dust?
??? Motor brushes - Do brushes show signs of irregular wear - cracks, dents, lines? Replace the
??? M+ M- Wires - Make sure wires are connected properly.
??? Display main IC - To ensure proper signal processing, press down on the main IC on the display
board, marked U5. .
??? Ribbon cable - Ensure that the ribbon cable is attached at the drive and display boards. Check cable
If you need additional help, please reach me.
sincerely. God bless you.
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Optic Sensor MOTOR Signal Test Procedure
Turn on unit power. Do not press display keys. Use your hand to rotate the motor flywheel. Normal result:
LED 10 lights to indicate the optic sensor signal entering the drive board. The LED appears to flicker at a
low speed and remain lit at high speed.
Optic Sensor MOTOR Signal Test Results
If LED10 does not light, inspect:
1. Optic sensor signal wires and their connections; Reinsert wire ends into connectors.
2. Whether optic sensor wheel rotates in the middle of the sensor; If not, reinstall the optic sensor wheel.
3. Whether optic sensor wheel teeth are broken or bent; if so, replace the optic sensor wheel.
4. If LED2, the VCC circuit indicator, on the drive board lights and there is no optic sensor signal output
(LED10 does not light), and if optic sensor wires and connections are good, replace the optic sensor. Watch this videos tips:
Watch this videos tips:
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