Yamaha XVZ13TF 1999 Service Manual page 458

2. Wiring connections
S Check the wiring of MCU X 5P DIN cable X
head set (white).
S Is the MCU X 5P DIN cable X head set wir-
ing properly connected and without de-
fected?
YES
Replace the MCU.
4. Intercom does not used
1. Intercom volume out put level
YES
2. Wiring connections
S Check the head set wiring.
S Connect the pocket tester (Ω
head set wiring as shown.
Left
Tester positive prove ! 3
Tester negative prove ! 2
Right
Tester positive prove ! 5
Tester negative prove ! 2
NO
Correct the MCU X
5P DIN cable X
head set wiring.
NO
Adjust the Intercom
volume out put level.
1) to the
AUDIO SYSTEM
Mike
Tester positive prove ! 1
Tester negative prove ! 4
S Check the head set wiring for continuity.
S Is the head set wiring OK?
YES
Replace the MCU.
8-60
ELEC
NO
Correct the head set
wiring.