Mitsubishi WD-52627 Training Manual page 39

Test Signal Activation
Use the same procedure as in the V28 chassis.
(MENU-2-4-5-7-REW)
Prelminary
Mechanical Optical Engine Adjustments are made using the UNIT-ADJUSTER shown in Figure 3-6. The UNIT-AD-
JUSTER is mounted under the Light Engine on the Engine Plate. It is accessed from the front of the set through the
opening for the Card Reader. Refer to the model specific Disassembly Instructions and remove the:
• Back Cover
• Speaker Grille
• Card Reader
[
A-1]
VERT. KEYSTONE
4mm Hex
Locking Screws and Wedge Removal
Before mechanical adjustments can be made, locking screw [B-1]
and [B-2] must be loosened.
• [B-1] is located on the front of the UNIT-ADJUSTER,
refer to Figure 3-6 and Figure 3-9.
• [B-2] is accessible from the rear of the unit on the right side
of the Optical Engine, refer to Figure 3-7.
• Remove the Rubber Wedge shown in Figure 3-8
NOTE: There is no Wedge used in 73 inch models
WARNING: DO NOT loosen [B-2]
too far. The nut on the other side may
drop off. Then the Optical Engine must
be removed to re-install the nut.
DLP Chassis Mechanical Adjustments
[B-1]
LOCKING SCREW
5mm Allen Wrench
Figure 3-6: UNIT-ADJUSTER
Required Tools
• 4mm hex wrench (10 inches long mnimum)
• 5mm Allen wrench (10 inches long minimum)
• 10mm hex or Phillips driver
[B-2]
Figure 3-7: [B-2] Lock Screw
3-5
[
A-2]
ROTATION
4mm Hex
[
A-3]
HORIZ. KEYSTONE
4mm Hex