7
Radio
SOUND QUALITY POOR
Yes
No
Yes
NG
OK
Is sound quality always bad?
Is tape player operating normally?
Poor signals, poor location.
Radio assembly faulty.
Install properly.
Speaker faulty.
Is tape player operating normally?
Is speaker properly installed?
Radio assembly or power amplifier faulty.
Recheck system after repair.
Temporarily install another speaker. Functions OK?
Is sound quality bad in certain
areas only?
Radio assembly or power
amplifier faulty.
Can cassette tape be inserted in tape player?
Check if RADIO No.1 fuse is OK?
Radio assembly faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Power amplifier faulty.
8
Radio
PRESET MEMORY DISAPPEARS
No
Radio assembly faulty.
No
No
No
No
Yes
Yes
Yes
Power amplifier faulty.
Radio assembly faulty.
Yes
Yes
Yes
No
No
No
NG
NG
OK
OK
Yes
Check if GND (wire harness side) of power amplifier
grounded normally?
Is power supplied to +B terminal of power amplifier?
Check if GND (wire harness side) of radio assembly
grounded normally?
Is power supplied to +B terminal of radio assembly?
-
BODY ELECTRICAL
AUDIO SYSTEM
BE-129
1647
Author:
Date:
2001 SIENNA (RM787U)
Содержание RM787U
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