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5000/5100 Series Digital Analog Clocks Installation and Operation Manual
Chapter 2: ADC-5100 Series Analog Digital Clocks
Troubleshooting
Hands are Offset
Sometimes the hands are offset by any number of hours, minutes, or
seconds. This generally occurs when the microprocessor loses track of
where the clock hands are positioned. This problem may occur if the
rear push buttons have been pressed in the wrong sequence.
The hands can be re-aligned (see t
“Repositioning the Hands” on
page 28
). This involves setting the hands to 12:00:00, which may take
up to 15 minutes. A short cut method is provided below.
Note
You cannot use the short cut method for the
24-hour model ADC-5124.
In the shortcut method, the hands are re-positioned to the top of the
closest hour and then the microprocessor is advised of the new hand
position. To re-calibrate the hands using this method follow these steps:
1. Disconnect the timecode. The front LED will flash twice per
second.
2. Press and hold the
MANUAL SET
button until the LED stays
illuminated.
3. Using the
CW
and/or
CCW
buttons (as described in the section
“Repositioning the Hands” on page 28
), position the hands to the
top of the nearest hour.
4. Press and hold
MANUAL SET
. The error LED will start to flash.
5. While holding
MANUAL SET
, press and hold the
CCW
button until
the error LED extinguishes.
6. While continuing to hold the
MANUAL SET
and
CCW
buttons,
momentarily press the
CW
button once for every hour indicated on
the hour hand. For example, if the hands are set to 7:00, press the
CW
button seven times. The LED will flash once every time the
CW
button is pressed. Doing this will tell the microprocessor what
time the hands are showing. To apply offset times, add or subtract
the number of hours offset to the number of times the
CW
button is
pressed. For example, for -3 hours offset, press the
CW
button 4
times (7 - 3). In case of difficulties, please see t
“Local Time
Offsets” on page 28
.
