Page 467 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - AUDIO SYSTEM 04-329

BASIC INSPECTION

Steps Inspection Measures
contents

Yes No> go to step 2
Check Battery voltage
Replace the battery. Refer 04
1 Battery voltage shall not be lower than 12V.
No? to “Chapter 20A, start
Check whether the result is normal?
and charge--battery”
Check the antenna Yes No> go to step 3
• Check the antenna for foreign matter
covering.
2 Repair or replace the an-
• Check the antenna for bending or defor- No?
mation. tenna
Check whether the result is normal?

Check the acoustics unit Yes No> go to step 4
• Push the acoustics power switch, and
3 check the liquid crystal display for normal Go to defect phenomenon
displaying. No?
form
Check whether the result is normal?

Check the acoustics unit Yes No> go to step 5
• Set the volume to over 10VOL, and check
4
the speakers for sound. No? Go to defect phenomenon
Check whether the result is normal? form

Check the radiowave Go to defect phenomenon
Yes
• There is a big difference in the coverage form
of AM and FM broadcast; sometimes AM
broadcast may be received clearly while
FM stereo broadcast cannot be received.
The coverage of FM stereo broadcast is
the minimum one and is susceptible to the
interference of electromagnetic waves.
• Phasing adjustment interference may be
5 generated when a vehicle receives 2 ra- Move the vehicle to a
dio-signals from 1 signal radiation tower, No? place with better signals
one of which is received directly from the available
signal radiation tower, and the other is
reflected by the ionosphere.
• Check whether or not there are high
buildings or mountains around the vehicle;
if any, they may obstruct part of the sig-
nals coming from the signal radiation
tower to the vehicle.