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HCD-CL5MD
6-7. INITIAL SETTING OF ADJUSTMENT VALUE
Note:
Mode which sets the adjustment results recorded in the non-vola-
tile 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 ex-
cluding the temperature compensation offset adjustment.
For details of the initial setting, refer to "6-4. Precautions on Ad-
justments" and execute the initial setting before the adjustment as
required.
Setting Procedure :
1. Move ./> to display "ADJ CLEAR" (C28).
2. Press the ENTER/YES button. "Complete!" will be displayed
momentarily and initial setting will be executed, after which "ADJ
CLEAR" (C28) will be displayed.
6-8. 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 pick-up 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. Move ./> to display "Iop Write" (C05), and press the
ENTER/YES button.
2. The display becomes Ref=@@@.@ (@ is an arbitrary number)
and the numbers which can be changed will blink.
3. Input the Iop value written on the optical pick-up.
To select the number : Move ./> .
To select the digit : Press the REC MODE button
4. When the ENTER/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 ENTER/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" (C05).
Display Procedure :
1. Move ./> to display "Iop Read"(C26).
2. Press the ENTER/YES button.
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 MENU/NO button or press the REC MODE
button and display "Iop Read" (C26).
6-9. 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.
40
Adjusting Procedure :
1. Move ./> and display "TEMP ADJUS" (C03).
2. Press the ENTER/YES button and select the "TEMP ADJUS"
(C03) mode.
3. "TEMP =
[OK]" and the current temperature data will be
displayed.
4. To save the data, press the ENTER/YES button.
When not saving the data, press the MENU/NO button.
5. When the ENTER/YES button is pressed, "TEMP =
will be displayed and turned back to "TEMP ADJUS" (C03)
display then. Pressing the MENU/NO button displays "TEMP
ADJUS" (C03) immediately.
Specified Value :
The "TEMP =
" should be within "E0 - EF", "F0 - FF", "00 -
0F", "10 - 1F" and "20 - 2F".
6-10. LASER POWER ADJUSTMENT
Check the Iop value of the optical pick-up before adjustments.
(Refer to 6-8. Recording and Displaying Iop Information.)
Connection :
Optical pick-up
objective lens
BD (MD) board
CN105 pin 1 (I+3V)
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,press the m or M
button and move the optical pick-up.)
Connect the digital volt meter to CN105 pin 1 (I+3V) and
CN105 pin 2 (IOP).
2. Move ./> and display "LDPWR ADJUS" (C04).
(Laser power : For adjustment)
3. Press the ENTER/YES button once and display "LD 0.9 mW $
".
4. Move ./> so that the reading of the laser power meter
becomes 0.85 to 0.91 mW. Press the ENTER/YES button after
setting the range knob of the laser power meter, and save the
adjustment results. ("LD SAVE $
moment.)
5. Then "LD 7.0 mW $
" will be displayed.
6. Move ./> so that the reading of the laser power meter
becomes 6.9 to 7.1 mW, press the ENTER/YES button and
save it.
Note : Do not perform the emission with 7.0 mW more than 15
seconds continuously.
SAVE"
Laser power
meter
Digital volt meter
" will be displayed for a
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