Marantz 4270 Especificações Página 18

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MODEL: HD-4001
Page 18
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]
1. Main-Y Gain
To set the main picture Y level
Incorrect analog source main picture brightness level.
Oscilloscope
TPMY
------
-------
Color bars
External Input
1. Supply a Color Bars with 100% white signal to an External Input.
2. Connect a scope to TPY.
3. Enter the Alignment Mode (MENU-2-4-5-7)
4. Select the MMTX function (AUDIO button).
5. Select adjust item #14 YDRM (VIDEO button).
6. Set the data so the waveform at TPY is 0.7 Vp-p ±0.03 Vp-p (ADJUST buttons).
7. Press “ENTER” to save data.
8. Press “MENU” twice to exit the service mode.
TEST POINTS
TPSY
TPY
TPSY
TPY
PWB-SIGNAL (Partial)
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