Sanyo LCD-22XR7SN, Service Manual

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3
Alignment instructions
1. Test equipment
PM5518 (video signal generator)
VG-849 (VGA and HDMI signal generator)
CA210 (color analyzer)
2 Alignment flow-chart
The alignment flow-chart is shown as fig-1
Fig-1 adjustment flow-chart
3 Unit adjustments
Connect all the boards according to wiring diagram, connect with power and observe the display.
Method for entering factory menu: press “INPUT”, “2”, “5”, ”8” and “0” in turn to enter factory
menu; press “CH+” and “CH-” to select adjustment items and press “VOL+” and “VOL-” to adjust
value items, press “MENU” repeatedly to exit.
Method for software upgrading: When software upgrading please enter factory menu first, enter
ISP item of OPTION, set ISP to 1 and you can begin to upgrade. After upgrade finished, it needs to
set ISP back to 0. If the picture can’t display when upgrading, it needs to solder JB1 on the main
board. Please unsolder JB1 again after upgrading.
3.1 Initialization
Enter factory menu, select “OPTION”, “EEPROM” and “HOTEL OPTION” sub-menu, adjustment of
items to see table1.
Table1 sub-menu adjustment
Items Preset Introduce
HOTEL 0 ON: HOTEL OPTION of factory menu is optional
OFF: HOTEL OPTION of factory menu is not optional
Check DDC, HDCP KEY, FLASH and POWER control IC
Factory initialization setup
IF channel AFT voltage of TV and AGC voltage adjustment
White balance adjustment
ADC correction of VGA and YPbPr
Performance check
Preset ex-factory
N o actory men
Alig A nment nstructi n
c e