Kenwood 702IR Instruction Manual - Page 11
Troubleshooting Guide
UPC - 019048167002
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Removing the Monitor Unit 1 Insert the removal tool (Accessory 6) deeply into the slots on each side, as shown. Accessory 6 2 Pull the monitor unit all the way out with your hands, being careful not to drop it. Troubleshooting Guide What might seem to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following table for possible problems. ? The power does not turn on. ✔ The fuse has blown. ☞ After checking for short circuits in the wires, replace the fuse with one having the same rating. ✔ No ACC position on vehicle ignition. ☞ Connect the same wire to the ignition as the battery wire. ? Nothing happens when the buttons are pressed. ✔ The computer chip in the unit is not functioning normally. ☞ Press the reset button on the unit (page 3). ? The screen is dark. ✔ The unit is in a location where temperature is low. ☞ If the temperature of the monitor unit drops, the screen may appear darker when power is first turned on due to the characteristics of a liquid crystal panel. Wait a while after turning power on for the temperature to rise. Normal brightness will return. ? No sound from wireless headphones. ✔ IR Headphones setting is "Off". ☞ Turn it "On" (page 6). ✔ The frequency setting is not set correctly. ☞ Select the transmitter frequency according to your headphones. ✔ The headphones power is off. ☞ The headphones power switch is turned on. ✔ The headphones batteries are exhausted. ☞ Replace the headphones batteries with fresh ones. English | 11