Sony MDS-PC3 M-crew Service Manual page 7

Iop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF
BD BOARD) ARE REPLACED
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 label of the optical pick-up. 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 Precedure:
1. While pressing the AMS knob and x/Z button, connect the power plug to the outlet, and release the AMS knob and x/Z button.
2. Rotate the AMS knob to display "[Service]", and press the @/1 button.
3. Rotate the AMS knob to display "Iop Write" (C05), and press the @/1 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.
To select the number : Rotate the AMS knob.
To select the digit : Press the AMS knob.
6. When the @/1 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 @/1 button.
8. "Complete! !" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become "Iop
Write" (C05).
9. Press the x/Z button to complete, remove the power plug to the outlet.
Display Precedure:
1. While pressing the AMS knob and x/Z button, connect the power plug to the outlet, and release the AMS knob and x/Z button.
2. Rotate the AMS knob to display "[Service]", and press the @/1 button.
3. Rotate the AMS knob to display "Iop Read" (C26), and press the @/1 button.
4. "@@.@/##.#" is displayed and the recorded contents are displayed.
@@.@ : indicates the Iop value labeled on the pick-up.
##.# : indicates the Iop value after adjustment
5. To end, press the AMS button or x/Z button to display "Iop Read" (C26), remove the power plug to the outlet.
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