Sony mz-dh10p Service Manual page 19

3-4. Charge Function Check
Note1: When perform this check, don't apply a voltage to battery terminals.
Note2: Be sure to disconnect the AC adapter when connecting the resistors.
Doing so with the power supply connected causes a trouble.
Procedure:
1. Connect the 10 ohms resistor (more than 3 watts) to battery
terminals.
2. Connect the AC adapter to the battery charging stand in
accessories and set the main unit.
3. Enter the test mode (Display Check mode).
4. Press the [VOL+] key to enter the Manual mode.
5. Press the [VOL+] key twice, press the
[VOL+] key once, press the
key twice to display as follows.
Display of the remote commander
250 ChrgLi
6. And key once again to select the item number 2251 and
>
display "251 ChgChk **" on the LCD of remote commander.
7. Press the ,
ENT
+ u
remote commander confirm that "ADJ OK" is displayed.
8. Press the key four times and back to the Display Check
x
mode.
9. Cut the power supply and remove the resistor that connected
to the battery terminals.
3-5. Laser Power Check
Procedure:
1. Enter the test mode (Display Check mode).
2. Press the [VOL+] key to enter the Manual mode.
3. Open the lid and press the
optical pick-up moves to the most inward track.
4. Press the [VOL--] key once to display as follows.
Display of the remote commander
009 DESIGN
5. Press the key three times to select the item number 9111
>
and display as follows.
Display of the remote commander
111 LrefPw **
6. 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. (Confirm it with the disc not inserted)
7. Confirm that the value of laser power meter is 0.860 mW ±
19.2%.
8. Press the key to select the item number 9112.
>
9. Confirm that the value of laser power meter is 0.763 mW ±
18.2%.
10. Press the key to select the item number 9113.
>
11. Confirm that the value of laser power meter is 6.87 mW ±
12%.
12. Press the key four times and back to the Display Check
x
mode.
key once, press the
>
key once, press the [VOL+]
>
key on the set or key on the
–
key continuously until the
.
3-6. Setting The Adjustment Values
3-6-1. 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 3-6-1. Hi-MD3 adjustment parameter
Example of Calculation:
Item No. Parameter
0211 Pr_nominal 2.48 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. Enter the test mode (Display Check mode).
2. Press the [VOL+] key to enter the Manual mode.
key once, press the [VOL+] key once, and press
3. Press the
>
the key once again to display as follows.
>
Display of the remote commander
210 DiscPr
4. Press the key once to select the item number 0211.
>
5. Adjust with [VOL+]/[VOL--] keys so that the adjustment value
of LCD becomes calculated value.
6. Press the ,
ENT
+ u
remote commander to write the adjusted value.
7. Press the key to next item.
>
8. Repeat adjustment from step 4 until item number 0216.
MZ-DH10P
Result
Decimal Hexadecimal
50 32h
30 1Eh
147 93h
40 28h
38 26h
116 74h
key on the set or key on the
–
19