Sony MZ-N707 r

MZ-N707

•Setting Method of NV Reset

1. Select the manual mode of the test mode, and set item number

021 NV Reset (see page 14).

2. Press the Xkey.

3. Press the Xkey once more.

4. Press the x/CHG key to quit the manual mode, and return

the test mode (display check mode).

•Change of NV Adjusted Values (Version 1.100)

Caution: Change the NV adjustment values according to the mi-

crocomputer version.

In this set, some adjusted values were set in the manual mode at

the shipment, but these will be cleared when the NV is reset.

Therefore, modify the NV adjusted values through the following

procedure immediately after the NV was reset.

1. Item numbers in which the NV adjusted v alues are to be modi-

fied

–Change ABCD gain [Hpit] initial value (item number 336)

Caution: The ABCD gain [Hpit] initial value must be

changed before the overall adjustment.

–Change BatFlg value (item number 741)

–Change NiRec0 to 4 values (item numbers 771 to 775)

–Change NiPb 0 to 4 values (item number s 776 to 779, 781)

–Change CLV dri ve v oltage limiter (item numbers 865, 866)

–Change x2 CLV speed gain, +6dB compared to con ventional

(item numbers 867, 868)

–Change x2 CLV phase gain, +3dB compared to con ventional

(item numbers 871, 872)

–Change x2/x1 switching temperature threshold value

(+10°C t +5°C) (item numbers 873, 874)

ResOK?

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Set LCD display

SECTION 5 ELECTRICAL ADJUSTMENTS

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Res***

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Set LCD display

Reset!

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r

NV reset (after several seconds)

OUTLINE

•In this set, automatic adjustment of CD and MO can be per-

formed by entering the test mode.

However, before starting automatic adjustment, the memory

clear , power supply adjustment, and laser po w er check m ust be

performed in the manual mode.

•A key having no particular description in the text, indicates a

set key.

PRECAUTIONS FOR ADJUSTMENT

1. Adjustment must be done in the test mode only.

After adjusting, release the test mode.

2. Use the following tools and measuring instruments.

•Test CD disc TDYS-1

(Part No. : 4-963-646-01)

•SONY MO disc available on the market

•Digital voltmeter

•Laser power meter LPM-8001

(Part No. : J-2501-046-A)

•Thermometer (using the Temperature Correction)

3. Unless specified otherwise, supply DC 3V from the DC IN

3V jack (J601).

4. Switch position

HOLD switch ............................................... ON

ADJUSTMENT SEQUENCE

1. NV Reset (EEPROM clear) Manual Mode

2. Power Supply Manual Adjustment Manual Mode

3. Temperature Correction (item number: 015)

rManual Mode

4. Laser Power Check

5. Electrical Offset Adjustment

Caution: This adjustment must be made with

no disc loaded.

rOverall Mode

6. CD Overall Adjustment

7. MO Overall Adjustment

rManual Mode

8. RESUME Clear

Note: If the version of the microcomputer is 1.000 or later, “3. Tempera-

ture Correction” and “2. Power Supply Manual Adjustment” can

be performed continuously in rev erse order with pressing the [END

SEARCH] key in the overall adjustment mode.

NV RESET

Caution: The shipment data will be cleared when the NV is reset.

Therefore, change the NV adjusted values follo wing the

Change of NV Adjusted Values immediately after the

NV was reset.

Change the NV adjustment values according to the mi-

crocomputer version.

ResNV CC

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Set LCD display