DSC MAXSYS PC4850 Manual de instalación - Página 13

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Section 4: Testing and Troubleshooting

4.1 Testing the PC4850

Once the PC4850 is connected and programmed, test

each of its functions to make sure it is working correctly.

The PC4850 should work as described in section 3.1,

"How the PC4850 Works".

4.2 Troubleshooting

The PC4850 should work correctly without the need for

adjustments. However, if you encounter problems get-

ting the unit to work, you can try adjusting the following

controls on the PC4850 circuit board. To adjust these con-

trols, first, remove power from the PC4850 (AC and bat-

tery power), then use a small screwdriver to change the

appropriate setting.

LCD Contrast

If the LCD is hard to read, turn the control marked RV1

clockwise to increase the display contrast. To decrease

the display contrast, turn the control counter-clockwise.

"Beep" Volume

The PC4850 keypad beeps whenever a key is pressed.

You can adjust the volume of these beeps. To increase the

volume, turn the control marked RV2 clockwise. To

decrease the volume, turn the control counter-clockwise.

Microphone Volume

If users cannot hear visitors when they call using the

PC4850, turn the control marked RV3 clockwise to

increase the microphone sensitivity. To decrease the

microphone sensitivity, turn the control counter-clock-

wise.

Pulse Dial Sensitivity

If the PC4850 does not unlock the door when a user dials

9 using a pulse dial telephone, turn the control marked

RV4 clockwise or counter-clockwise 1/10 of a revolution,

until the door unlocks when 9 is dialed.

Speaker Volume

If visitors cannot hear the user they are calling on the

PC4850, turn the control marked RV5 clockwise to

increase the speaker sensitivity. To decrease the speaker

sensitivity, turn the control counter-clockwise.

4.3 "System is Busy. Please Wait" Message

Whenever the system displays this message, visitors will

not be able to call users using the PC4850, but users will

still be able to enter the building using their access codes.

Postal workers will also be able to enter if a postal lock

has been installed.

If this message is displayed, check for a Telephone Line

Trouble. This trouble will occur when the outgoing tele-

phone line is disconnected from one or more units, or if

the telephone line is out of service. When the telephone

line is restored, the PC4850 will work normally. This

message is also displayed when another PC4850 current

has the line.