ABB Symphony Harmony Series, Instruction, Page: 224 / 402

WBPEEUI240751C0 10 - 1
Section 10
Repair and Replacement
Introduction
This section explains repair and replacement procedures for
I/O and auxiliary blocks.
Repair
Harmony I/O system repair is limited to assembly replace-
ment. If a block component such as an I/O module fails,
remove and replace it with another. Do
not
not not
not attempt to replace
discrete components in any I/O system assembly.
Replacement
NOTE: Always follow the instructions given in Special Handling in Section 5
when handling an I/O module.
The replacement procedures for most parts and assemblies are
intuitive. Figures
10-1 through 10-4 comprise the replacement
flowchart, which contains replacement procedures for those
parts and assemblies that need explanation.
In the flowchart, each flowchart block represents a single task.
The PR code in the flowchart block identifies the procedure
section that describes the steps to complete the indicated task.
Some steps are self-explanatory and have no related procedure
section. Complete all steps given in a procedure section before
continuing to the next flowchart block. The procedure sections
are located towards the back of the instruction.