Singing Machine iSM990 - Manual (Page 19)

Troubleshooting Guide
Should this unit exhibit a problem, check the following before seeking service:
No Power
• Power is not on; press the Power ON/OFF button to turn power on.
• Make sure the unit is connected to AC power.
No Sound – General
• Master Volume is set to minimum; raise volume.
• Correct Function was not selected; select using the FUNCTION button.
No Sound – If connected to a TV
• Volume on the TV is muted or too low.
• White and red audio plugs are not connected properly; see page E - 4.
• Correct source (usually AV) was not selected in the TV’s menu.
CD section is not working properly
• No disc inserted, or disc inserted upside down; insert disc correctly.
• Make sure to use a CD, CD+G, or when downloaded music has been burned, ensure the disc
is a CDR or CDRW.
• Lens is dirty. Disconnect the power and clean the lens with a CD lens cleaner.
• Moisture has formed. Turn the unit off, unplug the unit from the outlet and allow 20-30
minutes to dry.
No sound from the microphone
• Make sure it is firmly connected to the MIC1 or MIC2 jack.
• Make sure it is turned on, see page E - 7.
• Make sure the MIC VOLUME control is not on the lowest setting.
• MASTER VOLUME is set to minimum; raise volume.
File(s) on USB jack not playing
• The file is corrupted; replace file.
• The file is not in a format this unit will play.
• The connected USB device is not supported by the product.
The Bluetooth device cannot be paired or connected with the unit.
• You have not activated the Bluetooth function of your device; see page E - 11 or refer to
the Bluetooth device’s user manual.
• The unit is not in pairing mode; see page E - 11 to pair.
The Music playback is not available on the unit after successfully connecting the Bluetooth.
• Ensure your Bluetooth device can support the A2DP Bluetooth profile.
E - 18