Sony HCD-MD373 Initial Setting Of Adjustment Value, Recording And Displaying The Iop Information

8.“C1 = AD = ” will be displayed.

9.Check that the C1 error becomes below 80 and the AD error below 2.

10.Press the MENU/NO “R” button to stop playback, and press the 6 (MD) button and remove the disc.

5-7. INITIAL SETTING OF ADJUSTMENT VALUE

Note:

Mode which sets the adjustment results recorded in the non-volatile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value.

If initial setting is performed, perform all adjustments again excluding the temperature compensation offset adjustment.

For details of the initial setting, refer to “5-4. Precautions on Adjustments” and execute the initial setting before the adjustment as required.

Setting Procedure :

1.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button to display “ADJ CLEAR”.

2.Press the ENTER/YES “R” button. “Complete!” will be dis- played momentarily and initial setting will be executed, after which “ADJ CLEAR” will be displayed.

5-8. RECORDING AND DISPLAYING THE IOP INFORMATION

The IOP data can be recorded in the non-volatile memory. The IOP value on the label of the optical pickup and the IOP value after the adjustment will be recorded. Recording these data eliminates the need to read the label on the optical pick-up.

Recording Procedure :

1.When the power ON, press the 1/u button while pressing the p(MD) button and r (REC) button together.

2.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button to display “[Service]”, and press the ENTER/YES “R” button. (If nothing is displayed, press the

FUNCTION button and set the function to “MD”.

3.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button to display “Iop.Write”, and press

the ENTER/YES “R” 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 : Press the =0/MD/CD/TUNING – button or )+/MD/CD/TUNING + button.

To select the digit : Press the SYNC REC button.

6.When the ENTER/YES “R” button is pressed, the display be- comes “Measu=@@@.@” (@ is an arbitrary number).

7.As the adjustment results are recorded for the 6 value. Leave it 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 become “Iop Write”.

Display Procedure :

1.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button to display “Iop.Read”.

2.When the ENTER/YES “R” button is pressed, “@@.@/##.#” will be displayed and the recorded contents are displayed.

@@.@ indicates the Iop value labeled on the pick-up. ##.# indicates the Iop value after adjustment

3.To end, press the SYNC REC button or MENU/NO “R” but- ton to display “Iop Read”.

5-9. TEMPERATURE COMPENSATION OFFSET ADJUTMENT

Save the temperature data at that time in the non-volatile memory as 25 ˚C reference data.

Note :

1.Usually, do not perform this adjustment.

2.Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C. Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient temperature of 22 ˚C to 28 ˚C.

3.When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient tempera- ture.

Adjusting Procedure :

1.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button and display “TEMP ADJUST”.

2.Press the ENTER/YES “R” button and select the “TEMP AD- JUST” mode.

3.“TEMP = [OK]” and the current temperature data will be displayed.

4.To save the data, press the ENTER/YES “R” button.

When not saving the data, press the MENU/NO “R” button.

5. When the ENTER/YES “R” button is pressed, “TEMP = SAVE” will be displayed and turned back to “TEMP ADJUST” display then. When the MENU/NO “R” button is pressed, “TEMP ADJUST” will be displayed immediatelly.

Specified Value :

The “TEMP = ” should be within “E0 - EF”, “F0 - FF”, “00 - 0F”, “10 - 1F” and “20 - 2F”.

5-10. LASER POWER ADJUSTMENT

Check the IOP value of the optical pick-up before adjustments. (Refer to 5-8. Recording and Displaying IOP Information.)

Connection :

Laser power meter

Optical pick-up objective lens

Digital volt meter

BD (MD) board

CN110 pin 5 (I+3V)

CN110 pin 4 (IOP)

Adjusting Procedure :

1.Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the =0/ MD/CD/TUNING – button or )+/MD/CD/TUNING +

button continuously to move the optical pick-up.)

Connect the digital volt meter to CN110 pin 5 (I+3V) and CN110 pin 4 (IOP).

2.Press the =0/MD/CD/TUNING – button or )+/

MD/CD/TUNING + button and display “LDPWR ADJUST”. (Laser power : For adjustment)

3.Press the ENTER/YES “R” button once and display “LD 0.9 mW $ ”.

4.Press the =0/MD/CD/TUNING – button or )+/ MD/CD/TUNING + button so that the reading of the laser power

meter becomes 0.85 to 0.91 mW. Press the ENTER/YES “R” button after setting the range knob of the laser power meter, and save the adjustment results. (“LD SAVE $ ” will be displayed for a moment.)

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