This is a common problem with the M91 when the motors are more than several years old.
An error code of 4 flashes indicates a right motor fault. The right motor could have a short or open circuit, or a bad connection.
Check the right motor, connections and motor cable visually and with a voltmeter at the connector. Look for cuts, nicks and breaks in the wiring and for grease oozing out of the gearbox. Flip the seat back and remove the top cover. Disconnect the black square right motor plug and check the resistance across the red and black motor wires using a digital volt meter. 0 to 1.6 ohms is OK, anything out of this range is suspect.
If the motors are more than 3 years old, you should consider replacing the motor/brake/gearboxes as a pair, left and right. The motor/brake is about $650 with the motor/ brake/ gearbox assembly about $1,000 per side. Labor is 2 to 3 hours total. I usually replace the brake/motor/gearbox as a complete assembly to avoid future problems. Hope this helps.
LED Indications
The front panel Status LED provides an indication of
the set's operation and the possible cause of a malfunction.
If an abnormal condition is indicated, perform the
Self Diagnostics procedure.
Self Diagnostics
To activate, press the front panel <ACTIVITY> &<CH
??> buttons at the same time and hold for 5 seconds.
The STATUS LED will then flash denoting a two digit
code.
• The number of flashes indicates the value of the
MSD (tens digit) of the Error Code.
• The flashing then pauses for approximately 1/2
second.
• The LED then flashes indicating the value of the
(ones digit) of the Error Code.
• The Error Code is repeated a total of 5 times.
Example: If the Error Code is "23", the LED
will flash two times, pause, and then flash three
times.
Table 2-2: LED Indications
Error Codes, descriiptions and the most likely cause of
the error are listed in Table 2-3.
Note: The TV must be in "Shut Down." The LED
will probably be indicating an abnormal
condition. If the TV is switched Off, AC is
removed, or a System Reset is performed, the
code automatically resets to "12" No Error.
See the Error Code Log to retrieve a history of
errors.
Note: Use the front panel buttons, not the remote
control.
Note: If there is no response, the front panel may be
locked by a V-Chip setting. To unlock, press
and hold <ACTIVITY> on the front panel for
8 seconds.
LED Indication Condition
Off Off (standby)
Green Power On
Slow Blink Green Power Off with Timer Set
Fast Blink Green (80 seconds) > Off Power Off (Cooling fan still working, 80 sec)
LED Indication Condition
Red Lamp Failure
Yellow TV Too Hot
Slow Blink Red TV May Require Service
Slow Blink Yellow Lamp Door Open or No Lamp Installed
NORMAL INDICATIONS
ABNORMAL INDICATIONS (For details perform Self Diagnostics Procedure.)
372 views
Usually answered in minutes!
×