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10.
ELECTRICAL ADJUSTMENTS
1.1 Supply Voltage Adjustment
Connect a digital voltmeter to the cathode of diode D609 at the AV mode of the TV and set the screen voltage
to the minimum with the screen potentiometer. Adjust the main supply voltage (B+) with P601 potentiometer to
the following value (after supply adjustment, readjust Screen and focus voltage).
14"
20"
21"
2. SERVICE ADJUSTMENTS
To enter the Service Mode, 'Service In/Out" button on the Service Remote Control or activate the "Picture Menu"
with the user remote control and press "9301" (Press "0" button to exit the Service Mode).
While the service menu is on screen, version and the date of the software are written on right bottom of the
screen.
For Example:
SE1.641-A01
07/26/04
12:57:37
2.1 AGC Adjustment
•
Switch on the Service Menu
•
Find the "AGC(UHF)" with P+/P-
•
Set its value to 30 for BG, BG/DK and I systems
•
Find the "AGC(VHF)" with P+/P-
•
Set its value to 30 for BG, BG/DK and I systems
•
Find the "AGC(LPRIME)" with P+/P-
•
Set its value to 20 for LL' system
•
Exit from the service menu.
2.2 Screen Adjustment
•
Switch the TV to the AV mode
•
Do not make any connecttion from the scart switch
•
Switch on the service menu
•
Set the value of "BLUEBLACK" option to "OFF"
•
Set the value of the "SCREEN ADJ." to "40"
•
Press "OK" button on the RC
•
There should appear a horizontal line on the center of the set
•
Adjsut the screen potentiometre to set the line at the first seen point.
•
Exit from the service menu
2.3 White Balance Adjustment
•
Apply a white pattern with a pattern generator to the antenna input.
•
Enter the Service Menu and access to VIDEO sub-menu
: 105 VDC (for A34EAC01X06)
: 112 VDC (for A48EAK02X101)
: 110 VDC (for A51EFS13X191)
21
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