Sharp XG-MB70X, Service Manual

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XG-MB70X
AF (autofocus) inspection
< Camera >
Required conditions:
1. Place the unit in front of the screen (size: 60-inch diagonal) at the distance of 1.8m. There is no light source such as
a fluorescent light or reflector in the background.
2. Focus is adjusted correctly.
3. RGB input of 256-gradation pattern.
Method:
1. Send AF inspection command ("_CMR 1").
2. Check that the response command is "OK".
< AF function >
Required conditions:
1. Place the unit in front of the screen (size: 60-inch diagonal) at the distance of 1.8m. There is no light source such as
a fluorescent light or reflector in the background.
Method:
1. Press the AF button. AF operation must end within 11 seconds.
2. Check that the difference from the just focus point is within ±15cm.
* The above time applies when the focus start position is not fixed.
After the camera inspection, AF operation must end within 6 seconds.
Calling and quitting the process mode with the control keys on this model.
∗
Although it is possible for the process OUT to exit using the process menu, the IN/OUT toggle command is also
available considering the existing specification.
1. Calling and quitting
With the menu not displayed, press the "ENTER", "ENTER", "VOL+", "VOL-", "ENTER", "ENTER" and "MENU"
keys on main unit.
2. Others
Press the S3563 process key (toggle) on the main PWB to call and quit the process menu.
Note: When adjusting in the process mode, set a signal with a vertical frequency of 60 Hz or no signal. (May not be
properly adjusted with other signals.)
Resetting the lamp timer for this model
1. Resetting procedure
In Stand-by, run this command to clear the operating time of the lamp to 0 and turn on the power.
Press and hold "DOWN", "ENTER", and "MENU", and then press the "ON" key of the set.
Forced disabling of the System-Lock of this model
1. Disabling procedure
With System-Lock input window onscreen, press the "MENU", "ENTER", "ENTER", "MENU", "ENTER", "ENTER"
and "MENU" keys, in this order, on the remote controller.