Sony MDS-SP55 Service Manual page 8

IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 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 (IC171 of BD board),
record the IOP value on the optical pick-up according to the following procedure.
Record Precedure:
1. When the power OFF (STANDBY), press the ?/1 button (TA) while pressing the s button (MD) and ENTER/YES button (MD)
together.
2. Press the MENU/NO button (MD), and when "Check" is displayed.
3. Rotate the l L knob (MD) to display "MD [Service]", and press the ENTER/YES button (MD).
4. Rotate the l L knob (MD) to display "MD lop Write", and press the ENTER/YES button (MD).
5. The display becomes "MD Ref=@@@.@" (@ is an arbitrary number) and the numbers which can be changed will blink.
6. Input the IOP value written on the optical pick-up.
To select the number : Press the MENU/NO button (MD), and when "Check" is displayed.
To select the digit : Press the CD SYNC REC button (MD).
7. When the ENTER/YES button (MD) is pressed, the display becomes "MD Measu=@@@.@" (@ is an arbitrary number).
8. As the adjustment results are recorded for the 6 value. Leave it as it is and press the ENTER/YES button (MD).
9. "MD Complete!" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become
"MD Iop Write".
10. Press the ?/1 button (TA) to complete.
Display Precedure:
1. When the power OFF (STANDBY), press the ?/1 button (TA) while pressing the s button (MD) and ENTER/YES button (MD)
together.
2. Press the MENU/NO button (MD), and when "Check" is displayed.
3. Rotate the l L knob (MD) to display "MD [Service]", and press the ENTER/YES button (MD).
4. Rotate the l L knob (MD) to display "MD lop Read".
5. "MD @@.@/##.#" is displayed and the recorded contents are displayed.
@@.@ : indicates the Iop value labeled on the pick-up.
##.# : indicates the Iop value after adjustment
6. To end, press the MENU/NO button (MD) to display "MD Iop Read". Then press the ?/1 button (TA).
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