4. H f0 Adjustment

Purpose: To get correct horizontal frequency.

Use service remote control unit.

1.Press "2" button on the service remote control unit. and select H-ADJ mode. (By pressing "2" button the display will change from TV AGC to H-ADJ.)

2.Press "CH o/p" button on the service remote con- trol unit so that display will change "0" ~ "7". At this moment, Choose "4".

3.Turn the power off and on again. (Main Power but- ton on the TV unit.)

5. Black Stretch Control Adjustment

Purpose: To show the fine black color.

Symptom of Misadjustment: Black color will not appear correctly.

Note: Use service remote control unit.

1.Enter the Service mode. (See page 5-1)

2.Press "6" button on the service remote control unit. "B-S" is indicated.

3.Press "CH o / p" buttons on the service remote con- trol unit so that display will change "OFF," "0," and "1." Then choose "B-S OFF."

4.Press "6" button on the service remote control unit. "B-S2" is indicated.

5.Press "CH o / p" buttons on the service remote control unit so that display will change "0" and "1." Then choose "B-S2 0."

6.Turn the power off and on again, using the main power button on the TV unit.

6. Purity Check

1.Enter the Service mode. (See page 5-1)

2.Press "7" button on the remote control unit. Each time pressing 7" button on the remote control unit, display changes Red mode, Green mode, Blue mode, and White mode cyclically.

3.Select White mode.

4.Turn the power off and on again. (Main power but- ton on the TV unit.)

7. SD Check Mode

1.Enter the Service mode. (See page 5-1)

2.Press "1" button on the remote control unit. The unit enter the SD-Check mode.

3.The unit starts selecting the added channel from first channel according to the memorized CH ADD/ DELL data and CATV/TV data in RAM.

SD Check mode (Factory mode)

Press "1" buton.

7

Please wait

 

 

OSD color:

 

 

 

 

Magenta

There is no SD after

 

 

 

 

 

 

 

 

selecting channel.

 

13

 

 

 

 

 

 

 

 

Please wait

 

 

There are SD

 

OSD color:

 

 

 

 

 

in all channel.

 

Magenta

 

 

 

26

 

30

 

 

OK

NG

 

 

OSD color:

OSD color:

 

 

Magenta

Magenta

When SD-Check starting, there is no ADD channel.

ADD nothing

OSD color:

Magenta

5-3

L2401EA

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Emerson 6420FE service manual F0 Adjustment, Black Stretch Control Adjustment, Purity Check, SD Check Mode

6420FE specifications

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