GE CTF878, User & Service Manual

Page: 59 / 72

Parts Replacement 5-7
February 2009
Replacing the LCD
Display
The CTF878’s measurements are displayed on a two-pane LCD
graphic display panel. The LCD display normally provides years of
dependable service, but it is easily field-replaceable when necessary.
To replace the LCD display, see Figure 5-1 on page 5-9 for the
component locations, and complete the following steps:
!WARNING!
The main power to the CTF878 must be disconnected
before proceeding.
1.
Open the cover on the electronics console.
2.
Disconnect the white-ribbon display cable from connector
J7,
open the two cable brackets (inside the enclosure and on the inside
surface of the cover), and free the display cable. See Figure 5-2 on
page 5-10.
3.
Using a 3/16 inch nutdriver, remove the four nut/washer sets that
secure the display shroud to the inside of the console cover. Lift
the display shroud off its mounting studs.
4.
Using a 1/4” nutdriver, remove the four standoffs that secure the
LCD display assembly to the console cover. Lift the LCD display
assembly off its mounting studs.
5.
Place the new LCD display assembly over the mounting studs on
the console cover (in the same orientation as the one being
replaced) and secure it with the four standoffs.
Caution!
Do not overtighten the standoffs or the display assembly
may be damaged.
6.
Install the display shroud over the mounting studs with the bent
edges on the top and bottom extending toward the cover.
7.
Fasten the display shroud to the console cover with the four sets of
nuts and washers.
Caution!
Do not overtighten the nuts or the mounting threads may
be damaged.
8.
Feed the white-ribbon display cable through the cable brackets,
close the brackets, and connect the cable to connector
J7
.