RADIO WITH CD PLAYER
TSB Revision
CHASSIS ELECTRICAL
54A-196
INSPECTION PROCEDURE 20: Distortion on FM Only.
.
DIAGNOSIS
STEP 1. Check that the distortion is present when the radio
is tuned to another station.
Q: Does the distortion persist when the radio is tuned to
another station?
YES : Go to Step 2.
NO : The signal from that station is too weak.
STEP 2. Relocate the reception area and check the radio.
Q: When relocating the reception area does the distortion
increase or decrease?
YES : The cause may be multipath or fading noise.
Multipath noise is the echo that occurs when the
broadcast signal is reflected by a large obstruction
and enters the receiver with a slight time delay
relative to the direct signal (repetitious buzzing). A
fading or buzzing noise may occur when the
broadcast beam is disrupted by obstructing objects
and the signal strength fluctuates within a narrow
range.
NO : Replace the radio and CD player or radio, CD player
and CD changer. Check that a distortion is resolved.
INSPECTION PROCEDURE 21: Auto Select Function Inoperative, too Few Automatic Stations are
Selected.
DIAGNOSIS
.
STEP 1. Check the number of radio stations.
Q: Are there sufficient numbers of radio stations within the
area?
YES : Go to Step 2.
NO : Go to Step 3.
STEP 2. Check the distance from the transmission
antenna.
Q: Is there a transmission antenna within a range of 2
miles?
YES : Go to Step 4.
NO : Go to Step 3.