MDS-JB940 - Sony Audio Service Manual (repair manual). Page 7

7

The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need
to look at the value on the optical pick-up label. When replacing the optical pick-up or non-volatile memory (IC195 of BD board), record the
IOP value on the optical pick-up according to the following procedure.

Record Procedure:
1.

While pressing the  l AMS L  knob and x  button, connect the power plug to the outlet, and release the  l AMS L  knob
and x  button.

2.

Turn the  l AMS L  knob to display “[Service]”, and press the  YES  button.

3.

Turn the  l AMS L  knob to display “lop Write” (C28), and press the  YES  button.

4.

The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.

5.

Input the IOP value written on the optical pick-up label.
To select the number

: Turn the  l AMS L  knob.

To select the digit

: Press the  l AMS L  knob.

6.

When the  YES  button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).

7.

As the adjustment results are recorded for the 6 value. Leave it as it is and press the  YES  button.

8.

“Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop
Write”.

9.

Press the  FILTER  button to complete.

Display Procedure:
1.

While pressing the  l AMS L  knob and x  button, connect the power plug to the outlet, and release the  l AMS L  knob
and x  button.

2.

Turn the  l AMS L  knob to display “[Service]”, and press the  YES  button.

3.

Turn the  l AMS L  knob to display “lop Read” (C27).

4.

“@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@

: indicates the IOP value on the optical pick-up label.

##.# : indicates the IOP value after adjustment

5.

To end, press the  l AMS L  knob or  MENU/NO  button to display “Iop Read”. Then press the  FILTER  button.