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Service Bulletin
Service Bulletin JBL9810 - September 1998 To: All JBL Service Centers This is considered a Minor repair
Model: TLX 271P Subject: LED Color Cycling incorrectly
Ordinarily, the LED status in the TLX271P loudspeaker functions as follows:
Receiver/Amplifier Off�������������������������������.Red Receiver/Amplifier On and playing program material���������..��������.Green Receiver/Amplifier On, no program material after a 5 minute delay (Standby)�������Red
In the event that you receive a TLX271P loudspeaker with the complaint �the LED color is cycling the opposite way it�s supposed to�, perform the following modification: The problem can be solved by reversing the LED in its plug. 1) Remove the front grille and the 8� subwoofer. 2) CAREFULLY extract the LED and its plastic housing out of the front baffle with a blunt knife blade or similar tool; take care not to mar the front baffle surface. 3) Before removing the LED completely out of the cabinet and its plug, reach into the woofer opening and hold the plug in place to prevent the plug from falling back into the cabinet. 4) Pull the LED completely out; turn it 180 degrees and re-insert back into the plug, still holding onto the plug from inside the cabinet. 5) Insert LED and plastic housing back into the front baffle until it�s fully seated. 6) Replace the woofer and grille. 7) Test unit to assure that LED colors now cycle correctly .
Alternately, or if the LED seems irremovable in the front baffle: 1) 2) 3) 4) Remove the 8� subwoofer. Locate and cut the two LED wires at about their midway point. Strip all four wire ends and re-connect with the opposite polarity, i.e. black to white wire connections. The wires should be soldered and protected by heat shrink tubing or electrical tape, or small "wire nut" insulators can be used.
