Marantz 4270 Dokumentacja Pobierz pdf (Strona 19)

MODEL: HD-4001

Page 19

Purpose:

Measuring

Instrument

Test Point

Measuring

Range

Input Signal

Ext. Trigger

Input Terminal

Symptom:

Purpose:

Measuring

Instrument

Test Point

Measuring

Range

Input Signal

Ext. Trigger

Input Terminal

Symptom:

[Video Circuit]

3. Sub Picture Offset

To match sub picture white to main picture white

Sub picture white differs from white in the main picture.

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Full White Raster

External Input

1. Supply a full white raster signal to an External Input.

2. Select the white raster as the source for both the main and sub pictures.

3. Use the PIP/POP buttion to select the Single PIP mode.

4. Enter the Alignment Mode (MENU-2-4-5-7)

4. Select the AD9883A function (AUDIO button).

5. Select item #12 ROFF and #14 BOFF (VIDEO button).

6. Set the data fore items #12 and #14 so the sub picture white is close to that in

the main picture. (ADJUST buttons).

7. Press “ENTER” to save data.

8. Press “MENU” twice to exit the service mode.

[Video Circuit]

2. Sub-Y Gain

To set the sub picture Y level

Incorret analog source sib picture brightness level.

Oscilloscope

TPSY

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Color bars

External Input

1. Supply a Color Bars with 100% white signal to an External Input. Select this

input as the sub picture source.

2. Connect a scope to TPSY.

3. Enter the Alignment Mode (MENU-2-4-5-7)

4. Select the SMTX function (AUDIO button).

5. Select adjust item #14 YDRS (VIDEO button).

6. Set the data so the waveform at TPSY equals the main-y signal. (ADJUST

buttons).

7. Press “ENTER” to save data.

8. Press “MENU” twice to exit the service mode.

TPSY

TPY

PWB-SIGNAL (Partial)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 51 52

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Marantz 4270 Dokumentacja Strona 19

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