CMT-CP33MD, HCD-CP33, HCD-CP33K - Sony Audio Service Manual (repair manual). Page 7

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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. With the power ON, press the  CD x  button while pressing the  MD REC z  and  MD x  buttons together.
2. Press the  .(R) ,  >(R)  button to display “Service”, and press the  ENTER/YES (R)  button.
3. Press the  .(R) ,  >(R)  button to display “Iop Write”, and press the  ENTER/YES (R)  button.
4. The display changes to “Ref=@@@.@” (@ is an arbitrary number) and the digits which can be changed, blink.
5. Input the IOP value labeled on the optical pick-up.

To select the value

:

Press the  .(R) ,  > (R)  button.

6. When the  ENTER/YES (R)  button is pressed, the display changes to “Measu=###.#” (# is an arbitrary number).
7. The adjustment value that is obtained by the adjustment described in separate section of Manual, can be saved in this set up. However,

leave the value as it is and press the  ENTER/YES (R)  button.

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

Write”.

Display Precedure:
1. With the power ON, press the  CD x  button while pressing the  MD REC z  and  MD x  buttons together.
2. Press the  .(R) ,  >(R)  button to display “Service”, and press the  ENTER/YES (R)  button.
3. Press the  .(R) ,  >(R)  button to display “Iop Read”, and press the  ENTER/YES (R)  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  MENU/NO (R)  button to display “Iop Read”.