Boss Audio Systems BR-900CD User Manual

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Panel Descriptions
Inserting Batteries
1. Make sure that the power of the BR-900CD is turned 
off.
2. Remove the battery cover on the rear panel.
* When turning the unit upside-down, get a bunch of 
newspapers or magazines, and place them under the four 
corners or at both ends to prevent damage to the buttons and 
controls. Also, you should try to orient the unit so no buttons 
or controls get damaged.
* When turning the unit upside-down, handle with care to avoid 
dropping it, or allowing it to fall or tip over.
3. Being careful not to reverse the polarity (+/-), insert six 
AA dry-cell batteries into the battery compartment.
* BOSS recommends using longer-life alkaline batteries.
* Do not mix new batteries with partially used batteries, and do 
not mix batteries of differing types.
* Do not use rechargeable batteries.
4. Close the battery cover.
fig.00-205
When the battery power becomes low, “Battery Low!” 
appears in the display. When this message appears, replace 
the existing batteries with new ones as soon as possible.
Depending on the circumstances of a particular setup, 
you may experience a discomforting sensation, or 
perceive that the surface feels gritty to the touch when 
you touch this device, microphones connected to it, or 
the metal portions of other objects, such as guitars. 
This is due to an infinitesimal electrical charge, which is 
absolutely harmless. However, if you are concerned 
about this, connect the ground terminal (rear panel: see 
figure
) with an external ground. When the unit is 
grounded, a slight hum may occur, depending on the 
particulars of your installation. 
If you are unsure of the connection method, contact the 
nearest Roland Service Center, or an authorized Roland 
distributor, as listed on the “Information” sheet.
Unsuitable places for connection
• Water pipes (may result in shock or electrocution)
• Gas pipes (may result in fire or explosion)
• Telephone-line ground or lightning rod (may be 
dangerous in the event of lightning)
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