DigitalFlow™ XGM868i Service Manual 23
Chapter 4. Parts Replacement
Chapter 4. Parts Replacement
4.1 Introduction
The Model XGM868i has been designed to permit easy on-site upgrades and parts replacement. See Figure 6 on
page 33 for details of the standard XGM868i electronics enclosure assembly. The instructions in this chapter, along
with a few common tools, are all that is required to perform the following tasks:
• removing the circuit board assembly
• replacing the LCD display/interconnect subassembly
• replacing the fuse
• replacing the User Program
• installing an option card
• assembling/installing the circuit board assembly
WARNING! Prior to performing any maintenance procedures, be sure to disconnect the main power from
the unit.
If the XGM868i is installed in a hazardous environment, a) the electronics enclosure must be
moved to a safe area prior to removing the covers, or b) if the electronics enclosure cannot be
moved to a safe area, ensure that the surrounding area is free of ignitable gases.
Note: For compliance with the European Union’s Low Voltage Directive (2006/95/EC), this unit requires an external
power disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the Model XGM868i.
Use Figure 6 on page 33, Figure 7 on page 34 and Figure 8 on page 35 to locate the relevant components, while
completing the service procedures discussed in this chapter.
IMPORTANT: Keep a detailed record of all parts installations and replacements performed on the XGM868i in the
Appendix A, Service Record. This service history may prove very helpful in diagnosing any future
problems.
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