Sony MZ-NH1 User Manual download pdf (Page 18)

MZ-NH1

3-4-3. VBsAdj adjustments

Procedure:

1. In the “3-4-2. PwrAdj Adjustments” completed status, press

the [FF] key to display as follows.

Display of the remote commander

2. Apply the voltage of 5 V to the CL453 (VBUS 5V) and CL460

(VBUS GND).

3. Press the [FF] key to change the item number to 2241.

4. Adjust with [VOL+]/[VOL--] keys so that the value of digital

voltmeter becomes specification value. (refer to “table 3-4-2.

VBsAdj Specifications”)

5. Press the X key to write the adjusted value.

6. Press the [FF] key to select the next item, and repeat

adjustments to item number 2243 at the same manner as step

3 to step 5.

Item No. Display Specification value Measuring point

2241 241 REG4 ** 1.13 V ± 0.01 V CL603

2242 242 REG5 ** 2.05 V + 0.02 V CL8003

2243 243 REG6 ** 3.30 V ± 0.01 V CL8007

Note1: “**” is adjustment value (hexadecimal number).

Note2: Ground point of all adjustment points is CL433.

Note3: Refer to page 17 for adjustment location.

Table 3-4-2. VBsAdj Specifications

7. Press the [FF] key to select the item number 2244, and turn off

the power supply of battery terminal.

8. Adjust with [VOL+]/[VOL--] keys so that the voltage of between

CL935 and CL433 (GND) becomes 4.10 V (− 0.02 V).

9. Press the X key to write the adjusted value.

10. Apply the voltage of 3.7 V to the battery terminal again.

11. Press the x key to display “240 VBsAdj” (Item number:

2240).

12. Turn off the voltage of 5 V to the CL453 (VBUS 5V) and

CL460 (VBUS GND).

13. Press the x key three times and back to the Display Check

mode.

3-5. 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 once to enter the Manual mode.

5. Press the [VOL+] key twice, press the [FF] key once, press the

[VOL+] key once, press the [FF] key once, press the [VOL+]

key twice to display as follows.

Display of the remote commander

6. And [FF] key once again to select the item number 2251 and

display “251 ChgChk **” on the LCD of remote commander.

7. Press the X key confirm that “ChgCOK” is displayed.

8. Press the x key four times and back to the Display Check

mode.

9. Cut the power supply and remove the resistor that connected

to the battery terminals.

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 [FR] key continuously until 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 of the remote commander

5. Press the [FF] key three times to select the item number 9111

and display as follows.

Display of the remote commander

6. Confirm that the value of laser power meter is 0.67 mW ±

21%.

7. Press the [FF] key to select the item number 9112.

8. Confirm that the value of laser power meter is 0.76 mW ±

18%.

9. Press the [FF] key to select the item number 9113.

10. Confirm that the value of laser power meter is 6.25 mW ±

12%.

11. Press the x key four times and back to the Display Check

mode.

240

VBsAdj

250

ChrgLi

009

DESIGN

111

LrefPw **

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Sony MZ-NH1 User Manual Page 18

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