Sony MDS-JA333ES Service Manual page 8

[How to Record and Display the IOP Data When Replacing the Optical Pick-up and Non-volatile Memory
(BD Board IC171)]
The IOP data that is indicated on the optical pick-up, can be saved in the non-volatile memory of the MDS-JA333ES. Saving the IOP data in
the memory eliminates the needs to look at the printed value on the label that is attached on the surface of optical pick-up, and enables to view
the IOP data on display. When the optical pick-up is replaced or when the non-volatile memory (IC171 on BD board) is replaced, save the
IOP value that is printed on the label on the surface of optical pick-up by the following procedure.
How to Record the IOP Data:
1. While pressing the lAMSL knob and the x button at the same time, connect the AC power plug to the wall outlet, then remove
your hands from the lAMSL knob and x button at the same time. When the MDS-JA333ES enters the test mode, the message
"[Check]" appears.
2. Rotate the lAMSL knob until the message "Service" appears. Then press the YES button.
3. Rotate the lAMSL knob until the message "Iop Write" (C05) appears. Then press the YES button.
4. "Ref=@@@.@" (@ is arbitrary number) appears and the values that can be changed as desired flash.
5. Input the IOP value that is printed on the optical pick-up.
Selection of alphanumeric characters : Rotate the lAMSL knob.
Selection of digit
6. Press the YES button. Then display changes to "Measu= @@@.@" (@ is arbitrary number).
7. The value that is shown step 6, is the result adjustment and should not be saved. So leave the value of step 6 as it is, and press the YES
button.
8. The message "Complete!" appears for a moment, and the value is saved in the non-volatile memory. The message "Iop Write" (C05)
appears.
9. Upon completion of data saving, press the REPEAT button.
How to Display the IOP Data:
1. While pressing the lAMSL knob and the x button at the same time, connect the AC power plug to the wall outlet, then remove
your hands from the lAMSL knob and x button at the same time. When the MDS-JA333ES enters the test mode, the message
"[Check]" appears.
2. Rotate the lAMSL knob until the message "Service" appears. Then press the YES button.
3. Rotate the lAMSL knob until the message "Iop Write" (C05) appears. Then press the YES button.
4. The message "@@.@/##.#" appears. The contents that are saved in the non-volatile memory appear.
@@.@ : The IOP value that is printed on optical pick-up
##.# : The IOP value after adjustment
5. To exit the data display, press the lAMSL knob or the MENU/NO button to show the message "Iop Read" (C26). Then press
the REPEAT button.
8
: Press the lAMSL knob.