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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 + button to display "ADJ CLEAR".
2. Press the ^ "PROGRAM" 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. While pressing the INPUT button and p button, connect the
power plug to the outlet, and release the INPUT button and p
button.
2. Press the + button to display "[Service]", and press the ^
"PROGRAM" button.
3. Rotate the + button to display "Iop.Write", and press the
^ "PROGRAM" 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 = , + buttons.
To select the digit : Press the r "PROGRAM" knob
6. When the ^ "PROGRAM" 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 ^ "PROGRAM" 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 + button to display "Iop.Read".
2. "@@.@/##.#" is 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 r "PROGRAM" button or p "PROGRAM"
button 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 + button and display "TEMP ADJUST".
2. Press the ^ "PROGRAM" button and select the "TEMP
ADJUST" mode.
3. "TEMP =
[OK]" and the current temperature data will be
displayed.
4. To save the data, press the ^ "PROGRAM" button.
When not saving the data, press the p "PROGRAM" button.
5. When the ^ "PROGRAM" button is pressed, "TEMP =
SAVE" will be displayed and turned back to "TEMP ADJUST"
display then. When the p "PROGRAM" 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 :
Optical pick-up
objective lens
BD 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 = "PRO-
GRAM" button or + "PROGRAM" button 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 + button and display "LDPWR ADJUST".
(Laser power : For adjustment)
3. Press the ^ "PROGRAM" button once and display "LD 0.9
mW $
".
4. Press the = , + buttons so that the reading of the laser
power meter becomes 0.85 to 0.91 mW. Press the ^ "PRO-
GRAM" button after setting the range knob of the laser power
meter, and save the adjustment results. ("LD SAVE $
be displayed for a moment.)
5. Then "LD 7.0 mW $
" will be displayed.
Laser power
meter
Digital volt meter
" will
25
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