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4
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SECTION 4 – ADJUSTMENTS
4.1 Speaker Volume
1. Open the front of the telephone entry system and locate the speaker volume adjustment.
2. Place a phone call from the telephone entry system to a resident. While they are talking,
adjust the speaker volume potentiometer for adequate sound. To increase the volume
rotate the potentiometer clockwise, to decrease the volume rotate the potentiometer
counter clockwise.
4.2 Feedback
1. Open the front of the telephone entry system and locate the feedback adjustment.
2. Place a phone call from the telephone entry system to a resident. After they answer, ask
the resident to remain silent.
3. While rubbing your finger across the microphone hole, rotate the feedback potentiometer
clockwise, and then counter clockwise. When the noise from the speaker is minimum,
this is the correct adjustment for the feedback potentiometer.
4.3 Click Sensitivity
1. Open the front of the telephone entry system and locate the click sensitivity adjustment.
2. Place a phone call from the telephone entry system to a resident with a rotary dial type
phone. After they answer, ask the resident to dial 9 while you adjust the click sensitivity
potentiometer (the resident may have to dial 9 several times for you to obtain the correct
adjustment). When the door or gate opens, this is the correct adjustment for the click
sensitivity.
3. NOTE: Adjusting the click sensitivity too high (potentiometer fully clockwise) could cause
the system to respond to loud noises while it is in use. If this happens, rotate the click
sensitivity potentiometer counter clockwise 1/8 turn and re-test the system. You may
have to perform this step several times to find the correct adjustment.
4.4 Display Contrast (1802, 1803, 1810 only)
1. Open the front of the telephone entry system and locate the contrast adjustment.
2. Turn the master code switch on. The display will read MST CODE. While the display is
lighted, turn the contrast potentiometer clockwise and then counter clockwise until the
display is satisfactory.
3. Turn the master code switch off.
4. NOTE: Approximately 30 seconds after the master code switch is turned on, the system
will signal a long tone. This is normal and can be ignored. After the master code switch is
turned off, the display will read MST CODE for approximately 30 seconds.