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5-8. 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 "5-5. Precautions for Adjustments"
and execute the initial setting before the adjustment as required.
Setting Procedure:
[JOG UP]
1. Click the
or
CLEAR" (C28).
[ENTER/YES]
2. Click the
. "Complete!" will be displayed mo-
mentarily and initial setting will be executed, after which "ADJ
CLEAR" (C28) will be displayed.
5-9. RECORDING AND DISPLAYING THE Iop
INFORMATION
The Iop data can be recorded in the non-volatile memory. The Iop
value on the optical pick-up label and the Iop value after the ad-
justment will be recorded. Recording these data eliminates the need
to read the label on the optical pick-up.
Recording Procedure:
[JOG UP]
[JOG DOWN]
1. Click the
or
[ENTER/YES]
(C05), and click the
2. The display becomes "Ref=@@@.@" (@ is an arbitrary num-
ber) and the numbers which can be changed will blink.
3. Input the Iop value on the optical pick-up label.
To select the number : Click the
To select the digit : Click the
[ENTER/YES]
4. When the
"Measu=@@@.@" (@ is an arbitrary number).
5. As the adjustment results are recorded for the 4 value. Leave it
[ENTER/YES]
as it is and click the
6. "Complete!!" will be displayed momentarily. The value will
be recorded in the non-volatile memory and the display will
become "Iop Write" (C05).
Display Procedure:
[JOG UP]
[JOG DOWN]
1. Click the
or
[ENTER/YES]
(C26), and click the
2. "@@.@/##.#" is displayed and the recorded contents are dis-
played.
@@.@ indicates the Iop value on the optical pick-up label.
##.# indicates the Iop value after adjustment
[PUSH]
3. To end, click the
or
(C26).
[JOG DOWN]
to display "ADJ
to display "Iop Write"
.
[JOG UP]
[JOG DOWN]
or
[PUSH]
.
is clicked, the display becomes
.
to display "Iop Read"
.
[MENU/NO]
to display "Iop Read"
5-10.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:
[JOG UP]
1. Click the
JUST" (C03).
[ENTER/YES]
2. Click the
3. "TEMP =
[OK" and the current temperature data will be
displayed.
4. To save the data, click the
When not saving the data, click the
[ENTER/YES]
5. When the
be displayed and turned back to "TEMP ADJUST" (C03) dis-
play then. When the
(C03) will be displayed immediately.
Specified Value:
The "TEMP =
" should be within "E0 - EF", "F0 - FF", "00 -
0F", "10 - 1F" and "20 - 2F".
5-11. LASER POWER ADJUSTMENT
Check the Iop value of the optical pick-up before adjustments.
.
(Refer to 5-9. Recording and Displaying Iop Information)
Connection:
Optical pick-up
objective lens
BD board
CN105 pin 1 (I +3 V)
CN105 pin 2 (Iop)
Adjusting Procedure:
1. Set the laser power meter on the objective lens of the optical
pick-up. (When it cannot be set properly, click the
[FR]
to move the optical pick-up)
Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105 pin 2 (Iop) on the BD (MD) board.
[JOG UP]
2. Click the
ADJUST" (C04).
(Laser power : For adjustment)
[ENTER/YES]
3. Click the
[JOG UP]
4. Click the
the laser power meter becomes specified value. Click the
[ENTER/YES]
after setting the range knob of the laser power
meter, and save the adjustment results. ("LD SAVE $
be displayed for a moment)
Specified Value:
Laser power meter reading: 0.85 to 0.91 mW (KMS-262A)
5. Then "L 8.40 mW $
(KMS-262E) will be displayed.
MDS-NT1
[JOG DOWN]
or
to display "TEMP AD-
to select the "TEMP ADJUST" mode.
[ENTER/YES]
.
[MENU/NO]
.
is clicked, "TEMP =
[MENU/NO]
is clicked, "TEMP ADJUST"
laser
power meter
digital voltmeter
+
–
[JOG DOWN]
or
to display "LDPWR
once to display "L 0.90 mW $
[JOG DOWN]
or
so that the reading of
0.90 to 0.95 mW (KMS-262E)
" (KMS-262A) or "L 8.65 mW $
SAVE" will
[FF]
or
".
" will
"
31
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