Yamaha GW50 Owner's Manual page 125

TROUBLESHOOTING
APPENDICES
PROBLEM
The Backing sounds cannot be heard.
Song playback stops before the end of the song.
Song playback (or recording) only continues
for a few measures and repeats those measures
over and over.
During song playback, even though the A-B
Repeat function is active (the repeat mark is
displayed in the LCD), the selected measures
do not repeat.
When using one of the metronome patterns,
chords cannot be heard or entered.
Pattern number 248 does not sound.
MIDI bulk data cannot be received by the
GW50; or, when transmitting from the GW50
to another device, the other device cannot
receive bulk data.
The LCD cannot be read.
The LCD is completely dark.
116
TROUBLESHOOTING
POSSIBLE CAUSE AND SOLUTION
Check that all connections have been properly made and that
the BACKING LEVEL control has been appropriately set.
Check that the HEADPHONES LEVEL control has been set to
an appropriate level (if using headphones).
Check that the Backing tracks have not been muted.
(See page 76.)
Move to the last event of the song check what that event is; you
may have to enter another "ending" event to the song for it to
end as you intended. (See hint #1on page 87.)
The A-B Repeat function is active. Turn it off by simultaneously
pressing [SHIFT] and [A-B REPEAT]. (See pages 92~93.)
Playback must be started before the B measure for the A-B
Repeat function to work. (See page 93.)
The A/B measure setting may have changed if you've last used
the Copy or Delete functions.
This is normal; the metronome pattern was designed for using
alone, without chord or bass accompaniment. (See note in step
#2, page 84.)
This is normal; pattern number 248 is a blank pattern designed
for inserting blank measures into a song.
Check all MIDI connections and settings on both devices, then
try the operation again. (See pages 101, 102.)
Use the LCD SETTING switch on the rear panel to set the LCD
for proper viewing. Set it to FLOOR when you are using the
GW50 on the floor, and to DESKTOP when you have it set on
a table or desk in front of you.
Leaving the GW50 in environments with temperatures over 50 C
(122 F) causes the LCD to turn completely black. If this happens,
you can make the LCD readable again by putting the GW50 in
a cool location.