Humminbird Smartcast RF20 - Manuel (Page 8)

4. The display begins to fade out. Images are not as sharp as normal.
Check the battery position and make sure that the battery door is properly closed. Also, make sure that you have removed
the plastic strip that is located in the battery compartment when it is new.
If this doesn’t help, replace the battery. After replacing the battery, if the unit still has a faded display, remove the battery
door again and re-install.
5. The display shows many black dots at high sensitivity settings.
You are seeing noise or interference caused by one of several sources. Noise can be caused by other electronic devices.
Turn off any nearby electronics and see if the problem goes away. Other sonar devices or any electronic device operating
in the 900 mHz range (in the 400 mHz range for International versions) could cause interference with your SmartCast.
6. The display shows fluctuating depth readings and excessive clutter, including vertical bars that may be
drawn on top of fish icons.
The SmartCast system comes with the capability to receive separate signals from a Channel A RSS or a Channel B RSS.
Two A- or B-type RSS units used simultaneously, as well as one A- and one B-type RSS unit used simultaneously, can
cause RF interference between each other.
7. The display jumps and the bottom has an abrupt change; sometimes a vertical line is missing or a black line
from top to bottom is displayed.
This display image jump is due to an automatic change in depth. New returns graphed at a different scale will not match
up with the historic data already graphed at a higher or lower scale. Vertical lines can also occur as the radio signal from
the RSS is lost and then regained in rough water conditions.
Techsonic Industries 6 Month Limited Warranty
We warrant the original retail purchaser that products made by Techsonic Industries have been manufactured free from
defects in materials and workmanship. This warranty is effective for 6 months from the date of original retail purchase.
Techsonic Industries products found to be defective and covered by this warranty will be replaced or repaired free of charge
at Techsonic Industries' option and returned to the customer freight prepaid. Techsonic Industries' sole responsibility
under this warranty is limited to the repair or replacement of a product that has been deemed defective by Techsonic
Industries. Techsonic Industries is not responsible for charges connected with the removal of such product or reinstalla-
tion of replaced or repaired parts.
This warranty does not apply to a product that has been:
• Improperly installed;
• Used in an installation other than that recommended in the product installation and operation instructions;
• Damaged or has failed because of an accident or abnormal operation;
• Repaired or modified by entities other than Techsonic Industries.
Please retain your original receipt as a proof of the purchase date. This will be required for in-warranty service.