Sony MZ-R91 User Manual

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

formed by entering the test mode. (See page 11)
However, before starting automatic adjustment, the memory
clear, power adjustment and temperature adjustment must be
performed in the manual mode.

• The keys in the description refer to the keys on both set and

remote commander unless otherwise specified.
Though LCD display shows the LCD of the remote commander,
same contents are also displayed on the LCD of the set.

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.
• Laser power meter

LPM-8001

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

• Digital voltmeter

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

3V jack.

4. Switch position

HOLD switch ................ OFF

Adjustment must be done with the following steps.

1. NV Reset (Memory clear)

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2. Power Supply Manual Adjustment

Manual Mode

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3. Temperature correction

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4. CD Overall Adjustment

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Overall Mode

5. MO Overall Adjustment

























1. Select the manual mode of test mode, and set mode num-

ber 021NV Reset.

2. Press the X key.

3. Press the X key once more.

r NV reset (after several seconds)

4. Quit the manual mode, and activate the test mode.

Adjustment must be done with the following steps.

1. VC PWM Duty (L) adjustment (mode number: 762)

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2. VREM PWM Duty (H) adjustment (mode number: 763)

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3. VREM PWM Duty (L) adjsutment (mode number: 764)

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4. VC PWM Duty (H) adjustment (mode number: 765)

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5. VREM PWM Duty (H) adjustment (mode number: 766)

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6. VREM PWM Duty (L) adjustment (mode number: 767)

R e s N V

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R e s O K ?

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R e s * * *

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R e s e t !

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