Table of Contents
Advertisement
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 for Adjustments"
(See page 39) and execute the initial setting before the adjustment as
required.
Procedure:
1. Press the
or
. m "R"
CLEAR" (C28).
2. Press the
ENTER/YES "R"
displayed momentarily and initial setting will be executed, after
which "ADJ CLEAR" (C28) 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 optical pick-up label 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. Press the
or
. m "R"
Write" (C05), and press 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 : Press the
button.
To select the digit : Press the
4. When the
ENTER/YES "R"
comes "Measu=@@@.@" (@ is an arbitrary number).
5. As the adjustment results are recorded for the step 4 value.
Leave it as it is and press the
6. "Complete!" will be displayed momentarily. The value will be
recorded in the non-volatile memory and the display will be-
come "Iop Write" (C05).
Display Procedure:
1. Press the
. m "R"
or
Read"(C26).
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
3. To end, press the
MENU/NO "R"
(C26).
button to display "ADJ
M > "R"
button. "Complete!" will be
button to display "Iop
M > "R"
ENTER/YES "R"
button.
. m "R"
or
M > "R"
[REC MODE]
button.
button is pressed, the display be-
ENTER/YES "R"
button.
M > "R"
button to display "Iop
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.
Procedure:
1. Press the
. m "R"
"TEMP ADJUST" (C03).
2. Press the
ENTER/YES "R"
ADJUST" mode.
3. "TEMP =
[OK]" and the current temperature data will be
displayed.
4. To save the data, press the
When not saving the data, press the
5. When the
ENTER/YES "R"
SAVE" will be displayed and turned back to "TEMP ADJUST"
(C03) display then. When the
"TEMP ADJUST" (C03) 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 the Iop Information)
Connection:
Optical pick-up
objective lens
BD (MD) board
CN105 pin 1 (I+3V)
CN105 pin 2 (IOP)
Procedure:
1. Set the laser power meter on the objective lens of the optical
pick-up. (When it cannot be set properly, press the
button or
button to move the optical pick-up)
M "R"
Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105pin 2 (IOP) on the BD (MD) board.
2. Press the
. m "R"
"LDPWR ADJUST" (C04).
(Laser power : For adjustment)
3. Press the
ENTER/YES "R"
$
".
4. Press the
. m "R"
reading of the laser power meter becomes 0.85 to 0.91 mW.
Press the
ENTER/YES "R"
of the laser power meter, and save the adjustment results. ("LD
SAVE $
" will be displayed for a moment)
5. Then "LD 7.0 mW $
" will be displayed.
or
button to display
M > "R"
button to select the "TEMP
button.
ENTER/YES "R"
button.
MENU/NO "R"
button is pressed, "TEMP =
button is pressed,
MENU/NO "R"
laser
power meter
digital voltmeter
+
–
m "R"
or
button to display
M > "R"
button once to display "LD 0.9 mW
or
button so that the
M > "R"
button after setting the range knob
43
Advertisement
Table of Contents
