JBL JBLMR18.3 Page 8 Troubleshooting Manual Download

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7.2 Method



Gently remove the rubber boot from the desired knob using your fingertips.



Grab the exposed plastic knob with pliers and gently pull the knob from the shaft.



Using a toothpick, gently work the cooking spray between the shaft and rubber membrane lubrication the entire
perimeter of the shaft.



DO NOT INSERT TOOTHPICK MORE THAN 1/16 INCH AS THIS CAN PUNCTURE THE RUBBER SEAL RESULTING IN
PERMANENT DAMAGE.



Repeat if necessary.



Reinstall the plastic knob taking care to align the keyway of the knob the flat part of the shaft.



Reinstall the rubber boot.

Summary of Contents for JBLMR18.3

Page 1: ...wer 3 3 Buttons controls not responding or behaving erratically 3 4 Poor reception or no reception 3 5 No audio speaker audio is unevenly distributed or some speakers not working 3 6 Low audio 3 7 Flu...

Page 2: ...er wires as this will cause permanent damage to the radio s output IC Tape off any unused speaker wires individually to prevent accidental shorting which can also harm the output IC Antenna must be in...

Page 3: ...tuations a bad fuse can be spotted visually this may not always be the case The best method would be to use a multi meter or a test light Ensure the battery power supply is putting out at least 12V wh...

Page 4: ...remotes remote adaptors and extensions If the stereo returns to normal operation plug one attachment in at a time until the discovering the defective part Check all remote connections for water intrus...

Page 5: ...iPod or MP3 player make sure the volume is turned up Check speaker connections Ensure each speaker wire is routed to the appropriate speaker terminal for which it is intended Inspect all speaker wire...

Page 6: ...for more information If nothing else works initiate warranty claim if you are under warranty 3 10 CD door won t close open Initiate a warranty claim if you are under warranty 4 0 External Amplifier Is...

Page 7: ...corrosion or rust Replace Sirius tuner 5 2 2 Displays Check Antenna Antenna to satellite line of site is disrupted Check antenna connection to tuner for disconnection or looseness Check the same conne...

Page 8: ...othpick gently work the cooking spray between the shaft and rubber membrane lubrication the entire perimeter of the shaft DO NOT INSERT TOOTHPICK MORE THAN 1 16 INCH AS THIS CAN PUNCTURE THE RUBBER SE...

Page 9: ...sting Twist the knob in one direction and let go The knob should quickly bounce back to center Repeat the step above but now in the opposite directly Check other controls on the stereo for proper oper...

Page 10: ...8 0 Location of Production and Serial Numbers These numbers are found on the silver label location on the bottom of the radio s chassis See below example...