HP (Hewlett-Packard) Princeton HP-21 Electronic Keyboard User Manual


 
Precautions
Please read the following carefully before use:
Do not expose the piano to high temperature, direct sunlight or excessive dust.
Do not place the piano too close to appliances such as televisions and radios as these items may cause
interference.
Avoid excessive humidity and putting any liquids on top of the piano
Always unplug AC cord by gripping the plug firmly, but not pulling on the cable.
Do not apply excessive force to the switches and buttons.
When the piano is not in use or during a thunderstorm, please disconnect the power supply.
Maintain the volume at a comfortable level - we recommend you limit this to two-thirds of the
maximum to prevent damage to your ears
Unplug the power cable before cleaning the piano. Do not connect or disconnect the power cable with
wet hands.
Check and clean the power plug periodically.
To avoid damage to the piano and other devices to which it is connected, turn the power switches of
all related devices off prior to connecting or disconnecting cables.
Clean the piano and remove the dust with a dry soft cloth or a slightly damp cloth.
Never use cleaners such as thinner or alcohol. To prevent any damage on the surface of the LED
display, please use lens cleaning tissue to clean the display.
If the piano cable is damaged, please do not use the piano as it presents a fire or electrical hazard.
If the piano malfunctions due to improper handling, please switch off, wait 30 seconds, and switch on
again.
Do not attempt to disassemble or repair the piano by yourself. If the piano does not work properly,
please contact an authorized service technician.
The piano should not be exposed to water, rain, liquids, etc.. Do not place any object filled with
liquids on the piano.