Service manual

AM-6060 Service Manual Page 7
Rev. A00
Remote Reset Capability
The AM-301-10 board has an option to enable the computer's remote hardware reset, using a special
cable from Alpha Microsystems, part number DWB-10323-00. To enable remote reset:
1. Connect one end of the cable to JP4 (to the pin nearer J1) on the AM-301-10 board.
2. The other of the cable contains a DB-9F connector; attach this to any unused cutout on the back
panel. You will probably have to remove a cover plate on the back panel to do so.
3. Run a cable from the DB-9F connector on the back panel to the location from which you want to
be able to reset the computer. The far end of the cable should consist of a push-button switch
between pin 1 and pin 7 (signal ground).
Once you’ve enabled remote reset, you can reset the computer by activating the push-button switch.
Replacing the Time and Date Battery
When replacing the backup batteries, always be sure to turn off power to the system first! DO
NOT replace the batteries with the power on! As always when opening your computer chassis,
take proper precautions against electrostatic discharge, which can seriously damage system
components.
The AM-301-10 board uses two 3-volt lithium batteries (BR-1225) to power its time/date circuit. The
batteries are about the size of a dime (1.2 cm), and are secured side-by-side in a plastic holder at location
U10, as shown in Figures 4 and 6.
The batteries need to be replaced when the front status display shows B1 or B0. You must replace both
batteries at the same time. For battery replacement, please follow these steps:
Before turning off your computer, make a note of the current CMOS settings. Removing the
batteries will erase all CMOS data.
1. Insert a knife with a thin blade (such as a small scribe or Xacto™ knife) from the top, down
through the square hole between the right edge of the battery and the plastic holder's top piece.
(The right side is the side toward the connector at J2.)
2. Gently pry the right side of the battery so it slides to the left and pushes against the left side
spring contacts.
3. As you slide the battery to the left and it clears the plastic top hole, pry the right edge of the
battery upward and out through the hole in the top. The battery will typically "pop" up and out.