Calibration And Electrical Conductivity Check - Sony UP-D897 Service Manual

9-2. Calibration and Electrical
Conductivity Check
After replacing the KY-572 or MA-132 board, perform the
calibration of brightness and contrast volumes, and
perform the electrical conductivity check of each button.
2-2
Turn on the power while pressing the button
and button simultaneously.
The service mode starts.
Do not release the button and
button before the beep sound is made.
Press the jog dial two times.
"SVC" and then "PATAN" are displayed on LCD in
order.
Rotate the jog dial to display "BR:CAL".
Press the jog dial.
The calibration mode of brightness starts.
(1) Rotate the BRIGHT volume fully to the left in the
state that "BR:LEF" is displayed on LCD, then
press the jog dial.
(2) Rotate the jog dial to display "BR:RIG" and rotate
the BRIGHT volume fully to the right in the state
that "BR:RIG" is displayed on LCD, then press
the jog dial.
(3) Rotate the jog dial to display "BR:CEN" and
return the BRIGHT volume to the center in the
state that "BR:CEN" is displayed on LCD, then
press the jog dial.
Rotate the jog dial to display "BACK", then press the
jog dial.
Rotate the jog dial to display "CO:CAL".
Press the jog dial.
The calibration mode of contrast starts.
(1) Rotate the CONT volume fully to the left in the
state that ""CO:LEF" is displayed on LCD, then
press the jog dial.
(2) Rotate the jog dial to display "CO:RIG" and rotate
the CONT volume fully to the right in the state
that "CO:RIG" is displayed on LCD, then press
the jog dial.
(3) Rotate the jog dial to display "CO:CEN" and
return the CONT volume to the center in the state
that "CO:CEN" is displayed on LCD, then press
the jog dial.
Check the electrical conductivity of the |COPY
button.
Press the | COPY | button:
The error beep sound is made.
The electrical conductivity of other buttons can be
checked by calibration.
Turn off the power.
UP-D897