Repair manual

PARTS REPLACEMENT
4-16
h. Unplug the ground lead from P5 on the Monitor Board Assembly.
i. Loosen the CRT clamp screws far enough to release the CRT, then
gently pull the CRT back and out of the CRT mounting fixture.
2. INSTALLATION:
WARNING: Be sure the AC power cord is unplugged.
a Plug the CRT ground lead connector into the Monitor Board
Assembly at P5.
b. Reconnect the vertical and horizontal deflection connectors to J3 and
J4, respectively, on the Monitor Board.
c. Reconnect the CRT high-voltage lead to the CRT by compressing the
spring contacts with your fingers and inserting the contacts into the
CRT. If necessary, use a greenstick to guide them into place.
d. Reconnect the CRT socket to the CRT.
e. Insert the new CRT into the CRT Mounting Fixture and tighten the
CRT clamp screws.
Note: Press firmly on the CRT while inserting it into the fixture, making
sure that it seats properly.
f. Perform the following Calibration and Adjustment procedures
described in Section 5:
WARNING: Since these procedures must be done with the power on, use
extreme caution to prevent electrical shock.
Electrical/Final Assembly Alignment of CRT
Autoluminant Adjustment
COS4 Adjustment
Electrical Focus Adjustment
Digital Palette CRT Collimation
Taking a Test Picture
g. Replace the Light Shield.
h. Replace the cover on the chassis (Figure 4-2).