Part Replacement Instructions
900-0128-01-00 Rev B
3
Replacement of the PCBA Module
Tools
Flat screwdriver with small head (4 mm wide or less)
Ratchet with 8-inch extension and 10 mm socket
Procedure
To replace the PCBA Module:
1.
Disconnect all connections to the Auxiliary terminals, MATE3, and RTS connectors.
2.
Disconnect the AC input and output wiring by unlocking the tabs on the terminal strip (pulling them to
a perpendicular position so that they stand out from the board). Pull the wires free from the terminals.
3.
The PCBA Module may have either four or six transformer wires connected, depending on Radian
model. Disconnect these wires by inserting the screwdriver horizontally into the terminal block slots
and then levering the screwdriver outward (from the back of the housing to the front). This releases the
tension on the wires which can then be pulled out. Repeat for the remaining wires. Note the locations
of the wires for later reference. (If possible, take a picture of the wire placement prior to disconnection).
There are also markings on the terminal blocks (L1=Black, L2=Red, N=Neutral) and below them on the
circuit board (RIGHT XFMR, LEFT XFMR and NEUTRALS) that identify the correct connections. NOTE: For
models with only four wires, there are no L2 connections nor any terminal block named NEUTRALS.
Figure 3
Transformer and Fan Terminals
4.
Disconnect the fan wires by pinching their connectors and pulling to the right. Note the text on the
circuit board that shows the correct connections (FAN RIGHT and FAN LEFT).
5.
Disconnect the ribbon cables from the PCBA Module by pressing outwards on their clips and then
gently pull the connector away from the board.
Do NOT pull on the ribbon cable.
Pull on the
connector
. Pulling on the ribbon cable can damage the cable. Refer to Figure 4.
Figure 4
Ribbon Cables and MATE3/Auxiliary/RTS Connections
Fan Terminals (x2)
Transformer
Terminals
Pull gently on
the connector
to dislodge it
from the PCBA
Module.
DO
NOT PULL ON
THE RIBBON.
Press clips away
from the cable
connector.
Содержание GS-IOB-230VAC
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Страница 57: ...Index...