Mitsubishi Electric 55624R(S)-MF Service Manual page 132

54-132
Are connectors properly connected?
Does noise appear when the radio switch is
turned on while the vehicle is stopped and the
Is the radio correctly grounded?
(Is the mounting screw tightened securely?)
Is the antenna correctly grounded?
(If noise appears when the antenna is moved this
means the ground is not securely connected.)
I
Yes
Repair or replace radio.
TSB Revision
Ensure proper connection.
Static electricity noise:
Body static electric from the shock absorber
rubber bushings used to prevent vibration, tires,
etc. occurs because of separation from the
ground, causing a buzzing noise. Since no mea-
sures can be taken on the radio side, steps
should be taken to discharge the static electricity
of the vehicle body.
No
Tighten the screw securely.
No If rust is present of the antenna ground screw
l clean and tighten the ground securely.
I