Service Mode; Data Handling; Saving (Writing) Data; Reading Back Of Data - Sony KDL-26S3000 Training Manual

Service Mode

The service mode in the WAX3 chassis is accessed in the traditional way
by starting with the unit turned off and pressing "DISPLAY", "5", "VOL+",
and "POWER" in sequence. The TV will power up and the initial service
graphics shown in Figure 2-9 should appear. A white field from an external
generator was input to the television to make the picture more printer-
friendly and to keep the video input graphic from displaying.
Service adjustment availability is extremely limited in this chassis as
compared to other Sony television products. Note that the firmware
versions of the Trident (Digital) and Main Micro (BE for back-end) are
displayed for viewing to see if the unit is loaded with the latest version.

Data Handling

A couple of procedures have changed with the new software installed in
the WAX3 chassis.

Saving (Writing) Data

The traditional method of saving data in Sony televisions was to press
"MUTE", followed by "ENTER" on the remote commander. This is now
performed by pressing "MUTE" and then the "0" (zero) key. Just remember
that the "0" key on the remote is now what used to be the "ENTER" key.
If the key entry was successful, the word "WRITE" should appear on the
upper right portion of the screen as soon as the mute button is pressed
and turn red (indicating data writing) when the zero key is depressed.

Reading Back of Data

When performing adjustments there comes a time where things may
appear to be getting out of control or you may be trying an adjustment
and forgot what the data value was. Pressing "9" followed by "0" will read
back the last stored data from NVM. Unplugging the unit from AC power
will also cause a read-back from NVM.

Factory Reset

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Chapter 2 - Service and Troubleshooting
The method for returning the unit to "out of box" condition has changed.
Traditionally, this was performed by pressing "8" followed by "ENTER" on
the remote commander while in the service mode. The new procedure is
to point the remote at the receiver while the unit is turned on. Press the
joystick "UP" and hold it there while turning the unit off with the manual
power button. The screen should go dark but the green power LED will
remain lit. The unit will then cycle and should turn back on to channel 3
and ask what language you would like to use.

White Balance Adjustments

Note that the first service item is a white balance adjustment for the green
drive. The only adjustments that can be performed in this group is white
balance and there is a drive and background adjustment for each of the
3 colors. White balance adjustments will probably not be required even if
the LCD panel or the BU1 board is replaced based on experience with the
WAX2 chassis from last year. These adjustments will only be required if
the customer requests it or if someone else has changed the values.
TIP: If someone changes the white balance adjustments to where it
is noticeable the white balance can be restored to a reasonable level
(assuming the backlights have not aged to the point of significant color
shift) by setting the data values for the red, green and blue drive to 100
and the background for each color to 200.
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