QuadTech Guardian 6100 Plus Instruction Manual page 164

No Display:
Adjust contrast by pressing [MENU], [1] and the [↓] or [↑] arrow on the keypad so the
backlit box is to the right of Contrast.
Use the function keys [UP] or [DOWN] to increase or decrease the contrast. The display
Contrast is adjustable from 1 – 31. A value of 1 is brightest , a value of 31 is darkest.
The default setting for Contrast is 17.
No Buzzer:
Ensure Beeper is turned on.
To access Beeper Volume, press [MENU], [1] and the [↓] or [↑] arrow on the keypad so
the backlit box is to the right of Beeper Volume.
Use the function keys [LOW], [MEDIUM], [HIGH] or [OFF] to increase or decrease the
volume. The Beeper Volume can be set to OFF or to sound in a High, Medium or Low
tone. The default setting for Beeper Volume is HIGH.
Press [START] and nothing happens:
Press [STOP] followed by [START]
Ensure there is a valid program on the standby menu. Voltage may not equal 0.
Ensure Interlock on the back panel is connected
Ensure that Stop is not shorted to common on the back panel
Page 164 of 177 150799 Rev A3 Interface
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