SONY MZN420D
Manual de Servicio

MZ-N420D

Configuration of Test Mode
[Test Mode $Display Check Mode%]
Press the > key

[VOLUME +] key: 100th place of item [Major item switching] number increase. [VOLUME --] key: 100th place of item
> key x/CANCEL

number decrease.

[Manual Mode]
Press the
x/CANCEL key

key

[VOLUME +] key: 10th place of item

[Servo Adjustment] [Audio Adjustment] [Power Supply Adjustment] [OP Alignment Adjustment]

[Medium item switching] number increase. [VOLUME --] key: 10th place of item
> key x/CANCEL

number decrease.

key

Press the . key

[Minor item switching] > key: Unit place of item number
increase.
. key: Unit place of item number

[Overall Adjustment Mode]
Press the
x/CANCEL key

[Electrical Offset Adjustment]
Power Supply Adjustment Auto Item Feed CD Overall Adjustment/ MO Overall Adjustment

decrease.

[Adjusted value variation] [VOLUME +] key: Increases the adjusted
value of the 1st digit [VOLUME --] key: Decreases the adjusted value of the 1st digit

Press the

[GROUP] key

[Self-Diagnosis Result Display Mode]

Press the x/CANCEL key Press the MENU or [VOLUME +] key

[Adjusted value write]
ENTER/NX key :When adjusted value is

[Sound Skip Check Result Display Mode]
Press the x/CANCEL key Press the [VOLUME --] key

[Key Check Mode]
The key check quits, or open the upper panel

changed: Adjusted value is written. When adjusted value is not changed: That item is adjusted automatically.

Manual Mode
Mode to adjust or check the operation of the set by function. Normally, the adjustment in this mode is not executed. However, the Manual mode is used to clear the memory, power supply adjustment, and laser power check before performing automatic adjustments in the Overall Adjustment mode. � Transition Method in Manual Mode 1. Set the test mode (see page 13). 2. Press the > to activate the manual mode where the LCD display as shown below.
Set LCD display

000 Manual
3. During each test, the optical pick-up moves outward or inward while the > or . key is pressed for several seconds respectively. 4. Each test item is assigned with a 3-digit item number; 100th place is a major item, 10th place is a medium item, and unit place is a minor item. The values adjusted in the test mode are written to the nonvolatile memory (for the items where adjustment was made).

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