Roland VIMA JM-8 Owner's Manual download pdf (Page 133)

Troubleshooting

VIMA JM-8

133

20. Troubleshooting

This section provides points to check and actions to take when the JM-8 does not function as you expect. Refer to the

appropriate section for the problem you are experiencing.

Symptom Action Page

Power does not turn on

Is the included AC adaptor/power cord correctly connected to an AC

outlet and to the JM-8? Do not use any AC adaptor or power cord other

than the ones included. Doing so will cause malfunctions.

p. 18

No sound from the JM-8

Did you connect the JM-8 to an external amplifier or mixing console?

And did you switch it on?

p. 15

Could the [MASTER VOL] knob be turned down? Select a higher volume

setting.

p. 19

If you don’t hear the song whose playback you started, did you set the

[BACKING] knob to the minimum value? Select a higher setting.

—

If the microphone connected to the [MIC 1] socket doesn’t work, set the

[MIC 1] knob on the front panel to an appropriate value (not fully left).

p. 27

If the microphone connected to the [MIC 2/GUITAR] socket doesn’t work,

set the [MIC 2/GUITAR] switch on the JM-8’s rear panel to “MIC”.

Set the [MIC 2/GUITAR] knob on the front panel to an appropriate value

(not fully left).

p. 27

If the guitar connected to the [MIC 2/GUITAR] socket doesn’t work, set

the [MIC 2/GUITAR] switch on the JM-8’s rear panel to “GUITAR”.

Set the [MIC 2/GUITAR] knob on the front panel to an appropriate value

(not fully left).

p. 27

Can’t hear the song that is playing

Did you set the [BACKING] knob to the minimum value? Select a higher

level setting.

p. 28

Can’t hear the vocal of a music CD / Can’t hear

the melody of music files

Could the [CENTER CANCEL] button be dimmed? If the [CENTER CANCEL]

button is lit, the vocal sound will be canceled from the audio file/CD

playback.

If the [MELODY MUTE] button is lit, the melody of the MIDI files will be

muted. Switch it off.

p. 32

p. 33

“Buzz” is heard from external amplifier

Is the external amplifier or other device used with the JM-8 connected

to a different AC power outlet? Connect the amplifier or other device to

the same AC outlet as the JM-8.

—

Did you select an “Overdrive” effect for the guitar you connected? In

that case, a little noise is normal.

—

Can’t hear the signal source connected to the

AUDIO IN sockets

Check the setting of the [AUDIO IN] knob on the front panel. Set it to an

appropriate value (not fully left)

—

Your voice sounds strange

Does the [VOCAL] button light? Switch it off. p. 30

The pitch of the selected song is incorrect

Is the Master Tune setting appropriate?

Did you transpose the song?

p. 84

p. 34

Can’t play an audio/mp3-format song

Is the song in a format that the JM-8 is able to play? p. 9

The SMF file name is different from the file

name shown on your PC

Switch off the “Internal Name” parameter to see the same name as on

your computer screen.

p. 85

No sound when a MIDI device is connected to

JM-8

Are all devices powered on? Are the MIDI cables connected correctly?

Did you select the correct MIDI channel?

p. 97

Is the [RX¥ON] display button active? If not, switch it on. p. 99

Did you set the [BACKING] knob to the minimum value? Select a higher

level setting.

p. 28

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