Panametrics CTF878, Руководство по обслуживанию

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Model CTF878 Service Manual 37
Chapter 5.
Chapter 5.
5.1 Parts Replacement
5.1.1 Introduction
The electronics console of the CTF878 has been designed to permit easy on-site upgrades and parts replacement.
See Figure on page 43 and Figure 1-2 on page 11 for details. The instructions in this chapter, along with a few common
tools, are all that is required to perform the following tasks:
•
fuse replacement
• printed circuit board (PCB) removal and installation
• option card installation
• LCD display replacement
WARNING!
Prior to performing any maintenance procedures, be sure to disconnect the main power from the
unit.
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 CTF878.
An aluminum shroud over the printed circuit board shields the electrical components and serves as a location for the
wiring diagram label. All of the procedures discussed in this chapter, except for fuse replacement, require removal of
this shroud.
Note: For compliance with the European Union’s Low Voltage Directive (2006/95/EC), a transparent plastic shroud
protects the electrical connections. The shroud must remain in place, except while wiring the unit. Reinstall
the shroud after the wiring has been completed.
Use Figure on page 43 and Figure 1-2 on page 11 to locate the relevant components, while completing the following
procedures.
IMPORTANT: Keep a detailed record all service procedures performed on the CTF878 in Appendix A, Service Record.
This service history may prove very helpful in diagnosing any future problems.