43
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
. m
“R”
or
M >
“R”
button to display “ADJ
CLEAR” (C28).
2. Press the
ENTER/YES “R”
button. “Complete!” will be
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
. m
“R”
or
M >
“R”
button to display “Iop
Write” (C05), and press the
ENTER/YES “R”
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 on the optical pick-up label.
To select the number : Press the
. m
“R”
or
M >
“R”
button.
To select the digit : Press the
[REC MODE]
button.
4. When the
ENTER/YES “R”
button is pressed, the display be-
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
ENTER/YES “R”
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” (C05).
Display Procedure:
1. Press the
. m
“R”
or
M >
“R”
button to display “Iop
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”
button to display “Iop Read”
(C26).
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”
or
M >
“R”
button to display
“TEMP ADJUST” (C03).
2. Press the
ENTER/YES “R”
button to select the “TEMP
ADJUST” 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”
(C03) display then. When the
MENU/NO “R”
button is pressed,
“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:
Procedure:
1. Set the laser power meter on the objective lens of the optical
pick-up. (When it cannot be set properly, press the
m
“R”
button or
M
“R”
button to move the optical pick-up)
Connect the digital voltmeter to CN105 pin
1
(I+3V) and
CN105pin
2
(IOP) on the BD (MD) board.
2. Press the
. m
“R”
or
M >
“R”
button to display
“LDPWR ADJUST” (C04).
(Laser power : For adjustment)
3. Press the
ENTER/YES “R”
button once to display “LD 0.9 mW
$
”.
4. Press the
. m
“R”
or
M >
“R”
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)
5. Then “LD 7.0 mW $
” will be displayed.
Optical pick-up
objective lens
laser
power meter
+
–
BD (MD) board
digital voltmeter
CN105 pin
1
(I+3V)
CN105 pin
2
(IOP)
