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MZ-NH900
3-6. Laser Power Check
Procedure:
1. In the test mode (Display Check mode), press the [VOL+] key
to enter the Manual mode.
2. Open the lid and press the
optical pick-up moves to the most inward track.
3. Set the laser power meter so that the laser beam from the optical
pick-up aims at the objective lens of laser power meter at right
angle.
4. Press the [VOL--] key once to display as follows.
Display
9
DESIGN
5. Press the
key three times to select the item number 9111
>
and display as follows.
Display
111
###S**
6. Confirm that the value of laser power meter is 0.67 mW ±
21%.
7. Press the
key to select the item number 9112.
>
8. Confirm that the value of laser power meter is 0.76 mW ±
18%.
9. Press the
key to select the item number 9113.
>
10. Confirm that the value of laser power meter is 6.25 mW ±
12%.
11. Press the
key four times and back to the Display Check
x
mode.
3-7. Setting The Adjustment Values
3-7-1. Hi-MD3 setting
Preparation:
1. Perform calculation every item based on the data given by the
Hi-MD3 adjustment disc by referring to the following table.
(Round off the value in decimal place)
2. Convert the calculated value into hexadecimal number.
Note: The Hi-MD3 adjustment parameters vary depending on the disc,
and therefore use the parameters of the disc used when performing
the adjustment.
Item No.
Calculating formula (*3)
0211
Pr_nominal / 0.05
(*1)
Por / 0.05
Kr × (−100)
0212
0213
Pw_nominal / 0.05
(*2)
Ppw / 0.05
Kw × (−100)
0214
0215
Prmin / 0.05
0216
Pwmin / 0.05
*1) If the "Pr_nominal" value is indicated, use the "Pr_nominal" value
and not used "Por" value.
*2) If the "Pw_nominal" value is indicated, use the "Pw_nominal" value
and not used "Ppw" value.
*3) Round off after the decimal point.
Table 3-7-1. Hi-MD3 adjustment parameter
20
key continuously until the
.
Example of Calculation:
Item No.
Parameter
0211
Pr_nominal
2.50 mW
−0.3 %/°C
0212
Kr
0213
Pw_nominal
7.35 mW
−0.4 %/°C
0214
Kw
0215
Prmin
1.9 mW
0216
Pwmin
5.8 mW
Procedure:
1. In the test mode (Display Check mode), press the [VOL+] key
to enter the Manual mode.
key once, press the [VOL+] key once, and press
2. Press the
>
the
key once again to display as follows.
>
Display
210
DiscPr
3. Press the
key once to select the item number 0211.
>
4. Adjust with [VOL+]/[VOL--] keys so that the adjustment value
of LCD becomes calculated value.
5. Press the
key to write the adjusted value.
X
6. Press the
key to next item.
>
7. Repeat adjustment from step 4 until item number 0216.
3-7-2. Other setting
1. In the test mode (Display Check mode), press the [VOL+] key
to enter the Manual mode.
2. Press the
key five time to select the item number 0113
>
and display as follows.
Display
113
###S**
adjustment value (hexadecimal)
3. Press the [VOL+]/[VOL--] key and set the according value to
each model type and destination referring to the following
table.
4. Press the
key to write the adjusted value.
X
Destination
US
Canadian, Australian
AEP, UK, East European
E18, Hong Kong, Taiwan, Korean,
Chinese, Tourist
• Abbreviation
E18: 100V - 240V AC area in E model
Table 3-7-2. Mode Type and Destination Setting
Result
Decimal
Hexadecimal
50
32h
30
1Eh
147
93h
40
28h
38
26h
116
74h
Adjustment value
41
21
A1
25
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