Outback Power Systems FX Series Circuit Board Replacement Instruction - Manual

Installation & Programming Manual FX Circuit Board Replacement Copyright 2003  OutBack Power Systems, Inc.
900-0042-1 19009 62 nd Ave NE, Arlington WA 98223 USA
Page 1
Rev 2.0 10/26/04 Tel 360 435 6030 Fax 360 435 6019
FX Circuit Board Replacement Instructions
There are three circuit boards inside the FX inverter. Normally, only two of
these boards are candidates for replacement; the FET board (large board that
includes the battery terminals) and the control board (smallest board that includes
the microprocessors). In some cases, however, the AC assembly (the “L”-shaped
boards that include the AC terminal block) is defective.
Tools required to service the FX are:
•
#2 Phillips screwdriver
• 3/8” flat blade screwdriver
• 4mm hex wrench (included with the boards shipped to you)
• 10mm deep socket on a 12” extension with ratchet
• 10mm wrenches (2 of them would be nice)
• Rubber-band wrench (usually used for opening jars)
• Flashlight
• 9-volt batteries (three if you have a 12V or 24V FX, six for a 48V FX)
The FET board is the “brawn” of the system. It processes all of the high
current to and from the battery. This board contains the drive and overcurrent
protection circuits. In general, when an inverter fails, it is often the power FETs
that go. The FX is designed such that in the event of a FET failure, you replace
only the one assembly. There are two green LED’s on the FET board that help to
diagnose problems.
The control board is the “brains” of the inverter. It contains all of the
processing power as well as the unit’s memory. The processors and memory are
programmable and therefore possible to upgrade. It may be possible in the future to
download new code into the control board in the field, but for now we will have to
live with board swapping. There are either 15 or 20 (depending on the age of the
board) green LED’s on the back of the control board to help diagnose problems
with it.
The AC assembly is the I/O (Input/Output) portion of the FX. The AC
assembly consists of the AC board and the connector board. They are soldered
together to form one “L”-shaped assembly. This AC assembly will rarely require
repair or upgrade.
Once you have determined that the FX must come apart, use the following
guidelines to disassemble, repair, test and reassemble the unit. Repair should be