Vodavi Starplus Triad 1/2/3 Installation Manual page 46

Main Processor Board (MPB) Installation
Before programming the system, switch 8 should be placed in the ON
position and power cycled off and on to initialize the system database to
default. Once the database has been initialized, switch 8 should be
placed in the OFF position so as to protect the database.
Software for the system is contained on two chips, labeled U1 and U3.
The MPB is shipped with these chips in place so you should not have to
install the software. However, if a software upgrade is purchased, you
must replace the existing chips.
Removing Existing Software
Before starting this procedure, you must have an Integrated Circuit (IC)
Extractor tool to remove the current EPROMs from the Printed Circuit
Board.
1. Locate and remove EPROMs U1 and U3 on the MPB board. These
2. Place the EPROMs on a non-static, non-conductive surface until the
Installing New Software
1. Remove the EPROMs from the packing tube.
2. Install EPROMs U1 and U3 onto the Master Processor Unit. Be sure the
3. When the EPROMS are installed, check for bent pins on the EPROMs
4. With the lithium batteries and daughter boards installed, insert the
EPROMs must be removed and replaced with EPROMs labeled U1 and
U3. Using the IC tool, gently pull upwards until the EPROM lifts free of
the socket. Be careful not to bend or break the pins of the EPROMs.
new software is installed. Then place the EPROMs into the packaging
tube and put this into the packing box.
notched end (end with cutout) is aligned with the notched end of the
socket(s).
and correct any found.
MPB in slot MPB of the BKSU. Refer to Figure 2-12.
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