Calls (doorphone, camera, and intercom calls)Problem Cause & Solution PageSound cuts in/out orfades.R The surroundings of the main monitor, the sub monitor, or thedoorphone are noisy, causing the sound to cut out or fade.→ Try using the "Press-to-talk" mode.17R When talking with the sub monitor or camera:The antenna (® page 12) on the sub monitor is being covered withyour hand.→ Do not cover it.-R When talking with the sub monitor or camera:The sub monitor or camera is too far from the main monitor, or thereis an object such as a concrete wall obstructing the signal.→ Move the sub monitor or camera closer to the main monitor or toan area that does not have any obstructions.If the sub monitor or camera cannot be moved to another area,installing a repeater (additional accessory) may improve the signal.839Calls cannot be heardbecause of noise orfeedback.R Noise or feedback may occur when you are too close to the other party.→ Move away from the other party. -Your voice cannot beheard by the visitor butthe visitor’s voice can beheard.R You are using the "Press-to-talk" mode. ( is displayed on the mainmonitor and is displayed on the sub monitor.)→ When using the "Press-to-talk" mode, the visitor can hear yourvoice only while you are pressing .17Sub monitor (charging)Problem Cause & Solution Pageflashes and 2 shortbeeps sound.R The battery level is very low.→ Charge the batteries immediately.14Even if you place the submonitor on the charger,the charge indicator doesnot light up.R The AC adaptor is disconnected from the power outlet.→ Plug the AC adaptor into the power outlet firmly.R The sub monitor is not placed on the charger correctly.→ Replace the sub monitor securely. (The charge indicator lights inred.)R The batteries are new or discharged.→ Place the sub monitor on the charger and wait for a few minutes.The charge indicatordoes not go off after thebatteries have beencharged for about 8hours.R If the sub monitor is picked up off the charger or used during charging,the charging time will become longer. -R The charging time may increase when the operating temperature islower than 20 °C. -R The charging time increases when the power of the main monitor isturned off or is displayed on the sub monitor.→ Make sure the power of the main monitor is turned on, and chargethe sub monitor in a location near the main monitor where isdisplayed for the sub monitor’s signal display.814flashes after onlyusing the sub monitor 2 or3 times after charging.R Clean the ends of batteries ( and ) with a dry cloth and chargeagain.R It is time to replace the batteries. 144611. Troubleshooting