– 26 –
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 tempera-
ture 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 “4. Precautions on Adjustments”
and execute the initial setting before the adjustment as required.
Setting Procedure :
1. Turn the
[ AMS ]
knob to display “ADJ CLEAR (C24)”.
2. Press the
[YES]
button. “Complete!” will be displayed mo-
mentarily and initial setting will be executed, after which “ADJ
CLEAR” will be displayed.
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 elimi-
nates the need to read the label on the optical pick-up.
Recording Procedure :
1. Turn the
[ AMS ]
knob to display “Iop Write” (C28),
and press the
[YES]
button.
2. The display becomes Ref=@@@.@ (@ is an arbitrary num-
ber) and the numbers which can be changed will blink.
3. Input the IOP value written on the optical pick-up.
To select the number : Turn the
[ AMS ]
knob.
To select the digit : Press the
[ AMS ]
knob
4. When the
[YES]
button is pressed, the display becomes
“Measu=@@@.@” (@ is an arbitrary number).
5. As the adjustment results are recorded for the 6 value. Leave it
as it is and press the
[YES]
button.
6. “Complete!” will be displayed momentarily. The value will be
recorded in the non-volatile memory and the display will be-
come “Iop Write”.
Display Procedure :
1. Turn the
[ AMS ]
knob to display “Iop Read”(C27).
2. “@@.@/##.#” is displayed and the recorded contents are dis-
played.
@@.@ indicates the IOP value labeled on the pick-up.
##.# indicates the IOP value after adjustment
3. To end, press the
[ AMS ]
button or
[MENU/NO]
button
to display “Iop Read”.
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
9. TEMPERATURE COMPENSATION OFFSET
ADJUSTMENT
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 tem-
perature of this part has become the ambient temperature.
Adjusting Procedure :
1. Turn the
[ AMS ]
knob and display “TEMP ADJUS”
(C09).
2. Press the
[YES]
button and select the “TEMP ADJUS” mode.
3. “TEMP =
[OK” and the current temperature data will be
displayed.
4. To save the data, press the
[YES]
button.
When not saving the data, press the
[MENU/NO]
button.
5. When the
[YES]
button is pressed, “TEMP =
SAVE” will
be displayed and turned back to “TEMP ADJUS” display then.
When the
[MENU/NO]
button is pressed, “TEMP ADJUS” will
be displayed immediately.
Specified Value :
The “TEMP =
” should be within “E0 - EF”, “F0 - FF”, “00 -
0F”, “10 - 1F” and “20 - 2F”.
10. LASER POWER ADJUSTMENT
Check the IOP value of the optical pick-up before adjustments.
(Refer to 8. Recording and Displaying IOP Information)
Connection :
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
button
or
)
button to move the optical pick-up.)
Connect the digital volt meter to CN110 pin
5
(I+3V) and
CN110 pin
4
(IOP).
2. Turn the
[ AMS ]
knob and display “LDPWR ADJUS”
(C10).
(Laser power : For adjustment)
3. Press the
[YES]
button once and display “LD 0.9 mW $
”.
4. Turn the
[ AMS ]
knob so that the reading of the la-
ser power meter becomes 0.85 to 0.91 mW. Press the
[YES]
button after setting the range knob of the laser power meter,
and save the adjustment results. (“LD SAVE $
” will be dis-
played for a moment.)
5. Then “LD 7.0 mW $
” will be displayed.
6. Turn the
[ AMS ]
knob so that the reading of the la-
ser power meter becomes 6.9 to 7.1 mW, press the
[YES]
button and save it.
Note:
Do not perform the emission with 7.0 mW more than 15 seconds
continuously.
±
≠
Optical pick-up
objective lens
laser
power meter
+
–
BD board
digital voltmeter
CN110 pin
5
(I +3V)
CN110 pin
4
(IOP)
[ ]
[ ]
±
≠
±
≠
±
≠
