Internal Test Pattern; Service Adjustments; Position Adjustments - Mitsubishi Electric Digital Light Processing WD-52525 Technical Training Manual

ments, changing data, saving data
changes and exiting the Service
Mode is the same as in previous
models. These procedures are
shown in flow chart form in Fig-
ure 4-2.

Internal Test Pattern

To activate the internal Test Pat-
tern used for all service adjust-
ments, press "REWIND" when in
the Service Mode. Figure 4-3
illustrates the internal Test Pattern.

Service Adjustments

There are only 5 Service Adjust-
ments in the V26 model series.
This are seldom, if ever needed.
If the Light Engine or Chassis is
replaced these adjustments may
be needed.
The five adjustments are:
1) Horizontal Position (electrical)
2) Vertical Position (electrical)
3) Picture Rotation (mechanical)
4) Horizontal Keystone (mechani-
cal)
5) Vertical Keystone (mechanical)

Position Adjustments

1) Enter the Service Mode
"MENU-2-4-5-7"
2) Press "REWIND" ... activates the
Test Pattern
3) Select the Format function ...
"AUDIO" button
4) Select Item #1 ... HPOS
(VIDEO button)
5) Adjust data to center the picture horizontally.
6) Select Item #2 ...VPOS (VIDEO button)
7) Adjust Data to center the picture vertically.
8) Press "ENTER" to save data changes.
ON: DO NOT set VPOS data to 255 oress
CAUTION: DO NOT set VPOS data to
255 or 0 and press Enter. The picture
may freeze and blank out.
4-2