Replacing The Main Electronic Board (Xrc ) - ABB XSeriesG4 User Manual

Replacing the main electronic board (XRC
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The XRC board is mounted to the backside of the access door. It is mounted to the door on standoffs. See Figure 68: XRC
6490 component/cable locations or Figure 69: XRC
NOTICE – Property damage. The XRC
electricity or improper handling. To prevent this from occurring, the user should wear a grounding strap.
A grounding strap is a conductive device used to make connection between the person handling the board and a
high quality ground point. Before handling the board, wear a ground strap on the body then connect it to a
grounded point. This discharges electrical static buildup from the body to ground, preventing static from
discharging to the board.
Step-by-step instructions
NOTE: Before removal of the XRC
Failure to do so could result in data loss when the XRC
Collect data from the unit.
Back up configuration files following the instructions in section 4.2, Backing up configuration files.
Verify "L " battery alarm is not being displayed on the XFC
L
3.0V.
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Before XRC board removal, disconnect the following associated connectors in this order:
–
If used, disconnect the external charging source, J17 (Figure 72: XRC
–
Disconnect battery pack connector, J16 (Item 22).
–
Slide out to the right, the following green terminal strips from its associated XRC
connectors upward. Tape an identifier to each connector so it will be correctly reinserted into the same board mounting
connector during reinstallation of the XRC
– J6-COMM 2 (Item 18)
– J6-COMM 1 (Item 17)
– J8-B (Item 16)
– J8-A (Item 15)
– J20 (Item 13)
– J23 (Item 11)
NOTICE – Property damage. Pull all green terminal strips straight out. Rocking them back and forth may
severely bend the end pins. A small screw driver can help pry them straight out.
–
Disconnect PCCU port connector J15 (Item 25).
–
LCD interface connector J13 (Item 24).
–
Remove cable from J18 (Item 23) if external I/O modules are installed.
Remove the four mounting screws and lock washers securing the XRC
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XRC 6490 component/cable locations or Figure 69: XRC
NOTICE – Property damage. When removing the XRC
circuitry and components.
Replace and secure the XRC
over tighten screws. Doing so could cause damage to the board or associated circuitry.
Reinstall connectors, removed in Step 4, to their associated board mounted connectors in the following order.
–
J13 LCD Connector (Figure 72: XRC
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6890 component/cable locations.
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board, as with any electronic board, is susceptible to damage by static
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board, be certain any data has been saved to an external storage medium.
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board:
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board on four standoffs and secure in place using four screws and lock washers. Do not
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board connections, Item 24)
76
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)
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board is removed.
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or measure the lithium battery to make sure it is greater than
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board connections, Item 21).
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board connector. Do not lift the
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board to door mounted standoffs (Figure 68:
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6890 component/cable locations).
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board, grasp its outer edges. This prevents damage to
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