Adjustment Precautions - Sharp 20CT-250 Service Manual

ADJUSTMENT PRECAUTIONS

This model's settings are adjusted in two different ways: through the I
manner. The adjustment via the I 2 C bus control includes preset-only items and variable data.
1. Calling the service mode by the microprocessor
1 Set the switch S1006 to the service mode position, and the microprocessor is put in the service mode
(adjustment through the I 2 C bus control).
2 Press the CH UP/DOWN keys on the remote controller to select the modes one by one.
3 Press the CH UP/DOWN keys on the remote controller to select the modes in the order opposite to the
above step 2.
4 Using the VOLUME UP/DOWN keys on the remote controller, the data can be modified.
5 Set the switch S1006 to the normal mode (OFF) position, and the microprocessor is put out of the
service mode.
2. Factory presettings
1 Set the switch S1006 to the service mode position and turn on the main power switch. Initial values are
automatically preset only when a new E
2 The initial data are preset as listed on page 5.
3 Keep in mind that some settings should be modified, and the others should remain as preset.
Note: Once the chassis has been put together, be sure to set the switch S1006 to the service mode
position first and then turn on the main power switch (see the step 2.-1 above). Turning on
the power without initializing the E
3. The accompanying memory map (11-page document for the RH-iX3031CE ) is for your
reference.
2 C bus control and in the conventional analog
2 PROM is used (judgment with the first 4 bytes).
2
PROM may cause a flow of excess beam current.
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