ASTRO-PHYSICS GTO - Page 64

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● Keypad locks up in cold weather but works ne when used in warmer temperatures. This is a rare problem caused by
a defective real-time clock in the Keypad. Contact Astro-Physics.
● Corroded circuit board in the Keypad.
The Keypad display text blinks on and off, but there is no clicking sound.
● Battery power has dropped below the required threshold. If you measure the output of your battery to be above
11.5V, but the Keypad is still blinking one and off, please contact Astro-Physics. If your battery measures below 11.5V,
recharge or replace your battery.
The Keypad is resetting – making a clicking sound as the screen display disappears and reappears
● If Auto-Connect had been set to “NO”, the Location Selection menu will appear each time requesting you to startup
again.
● If Auto-Connect had been set to “YES” or “EXT”, the display will reappear wherever you left off. The clicking noise will
be annoying, but you will not lose functionality.
There are several potential causes and detailed solutions, which are outlined on our website in the Technical Support
section.
The R.A. drive makes random movements and jumps in position as it is tracking.
● It is possible that someone programmed the PEM correction in a random manner. Check the PEM setup screen to
see if the PLAY setting is active. If it is, change the setting to NONE and observe the action of the mount. This is
most likely to occur when a group of people use the mount and one person experiments, unbeknownst to the others.
To remedy, leave the setting to NONE until a proper PEM recording is made.
The telescope slewed in the wrong direction toward the pier.
As long as you provide the mount with proper information, your telescope will slew safely from one part of the sky to
another. These are a few scenarios that can cause a problem:
● You did not start your rst session at that location by following the Normal Startup Procedure outlined in the manual.
● Your time or daylight savings is not set correctly (if it applies to your state or country). In the location menu, press
the “0” number button if daylight savings is not in effect (e.g. winter). Enter “1” if daylight savings is in effect (e.g.
summer). Remember to change this when we “spring forward” or “fall back”.
● When you selected your calibration star, the scope was set up on the wrong side of the mount. Or, in conjunction with
the daylight savings issue, if the daylight savings is set incorrectly and you choose a star near the meridian, the scope
may be on the wrong side of the mount according to the time set on the Keypad.
You must point to stars in the west when your telescope is on the east side of the mount and stars in the east when
your scope is on the west side. When the stars are high and close to the zenith, this can be tricky. However, you can
tell which side the star is on by looking at the “z” number in the upper right corner of the Choose Star screen, then
comparing that number with the R.A. number of the star you choose. If the R.A. number is larger, the star is in the
east. If your scope is not on the correct side, the mount will not slew properly and the telescope could strike the pier/
tripod.
● You identied a star incorrectly when you selected it.
● Your time setting sent to the mount by the computer may be inaccurate.
I pressed the Keypad button and it jumped ahead two steps.
This happens if you hold the button too long. Just give it a short press.
The power light goes out and the motors stop.
The voltage of your battery has probably gone below 10 volts.
The motors moved when I disconnected one of the cables.
This is caused when the contacts of the connectors disconnect briey, then reconnect again as you remove the cable. We
recommend that whenever you disconnect any of the cables, you do so quickly with a rm outward movement.