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Alignments
8. Alignments
General: the Service Default Mode (SDM) and Service
Alignment Mode (SAM) are described in chapter 5 'Service
modes, faultfinding and repair tips'.
8.1
Alignment conditions
All electrical adjustments should be performed under the
following conditions:
•
Supply voltage : 220 - 240 VAC (+/- 10 %)
•
Warm-up time: 10 minutes
•
The voltages and oscillograms are measured in relation to
the tuner earth.
•
Test probe: Ri > 10MΩ Ci < 2,5 pF.
8.1.1
Selection of the SAM-menu
–
By transmitting the "ALIGN" command with the RC7150
Dealer Service Tool, followed by password "3140" and <
OK > button.
–
Standard RC sequence 062596 (within OSD time-out)
OSD
–
By shorting test-point M28 and M29 on the AV Control
panel on the monitor while switching on the set.
8.2
Adjustments on the D-box
8.2.1
Electrical Alignments
Pre-conditioner +5Vstby (PR3)
Connect a voltmeter to capacitor C2510 (PR2). With the aid of
R3504 adjust the voltage to 5.2 V +/- 50 mV.
VsVa supply (FD)
Va-supply (Addressing of the PDP - FD1)
De-activated the PDP.
Connect a voltmeter to capacitor C2120 (FD1). With the aid of
R3126 adjust the voltage to 55 V +/- 0.5 V.
Vs-supply (Sustain pulses - FD2)
De-activated the PDP.
Connect a voltmeter to capacitor C2020 (FD2). With the aid of
R3026 adjust the voltage to 165 V +/- 0.5 V.
8.2.2
Software Alignments
White point
•
Select the item "PDP test pattern" of the Service Alignment
menu and set it to "ON.
•
Select item " White point" of the Service Alignment menu.
•
Enter the "white point" menu and adjust the value of one of
the 4 submenu if necessary. Only the selected menu-item
including its value remain on the screen when selected.
The value has to changed within 5 seconds otherwise the
main menu reappears again.
The 4 sub menu-items of the White point menu:
–
"RED"
–
"GREEN"
–
"BLUE"
–
"COLOUR TEMPERATURE"
•
Leave the sub-menu by pressing "cursor up", "cursor
down", "OK" or the "MenuOnOff" button and return to the
main menu.
•
Select the item "PDP test pattern" of the Service Alignment
menu and set it to "OFF.
3/2/2013
World of free manuals
www.nostatatech.nl
FTV1.9DE
8.
61
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