Service Adjustments; Electrical Adjustments; Mechanical Adjustment; Activating The Service Menu - Mitsubishi Electric WD-73640 Technical Training Manual

There are 2 Types of Service Adjustments, electrical and mechanical:

Electrical Adjustments


Horizontal and Vertical Centering Adjustment

Index Delay Adjustment

Geometry Alignment

Data Transfer Functions

Mechanical Adjustment


Top Mirror Adjustment
Overview—Specific Adjust Procedures follow

Service adjustments are performed using the remote control.

The Service Menu is used for all service adjustments.

Test Patterns are generated internally.

1. Activating the Service Menu

1. Press the <MENU> button on a remote control. (The "MENU" display will appear.)
2. Press the buttons <2-4-5-7>. (The Service Menu On Screen Display will appear.)
If no display appears, press <EXIT> and repeat steps 1 and 2.
SERVICE MENU <MENU><2-4-5-7>
2. Test Pattern Activation
1. When in the Service Menu, press Play <  > to activate the internal test patterns (no indication will be dis-
played initially). Use
2. Press Play <  > a second time and use
3. Press Play <  > again to toggle back to the previous patterns.
3. Adjustment Selection
When in the Service Menu use the <VIDEO> button to toggle to the adjustment desired as indicated by the num-
ber and abbreviation displayed on screen, i.e. "1.HVPOS."
4. Adjusting Data
After selecting an adjustment item, use the Navigation <
5. Saving Data
Press <ENTER> to save the adjustment data. The menu display will turn red for approximately one second.
Note: If the circuit adjustment mode is terminated without pressing <ENTER>, changes in adjustment data
are not saved.
6. Data Transfer & Geometry Menu
While in the Service Menu, press the <0> button to activate the Data Transfer & Geometry Menu.
7. Exiting the Service Menu
Press <EXIT> to quit.

SERVICE ADJUSTMENTS

ELECTRICAL ADJUSTMENTS
SERVICE
TVM
1.HVPOS
FWD <  > RWD <  >
and
FWD <  >
Adjustment
Data (HPOS)
-3
Data (VPOS)
4
to toggle between patterns.
RWD <  >
and to access additional patterns.

> buttons to perform the adjustment.
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