Hitachi CG2026S, Service Manual

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Vertical Linearity (VLIN)
Vertical Size (VS1A)
Vertical Size (VS1B)
Vertical Position (VP1)
Horizontal Position (HP1)
Vertical Size (VS2A)
Vertical Size (VS2B)
Vertical Position (VP2)
Horizontal Position (HP2)
RGB MODE Horizontal Position (RGBH)
Enter a PAL B/G circle test pattern via RF. Change VLIN till you see circle as round as possible.
Enter a PAL B/G circle test pattern via RF. Change VS1A (Vertical Size) till horizontal black lines on both the upper and lower
part of the test pattern become very close to the upper and lower horizontal sides of picture tube and nearly about to disappear.
Check and readjust Vertical Size item if the adjustment becomes improper after some other geometric adjustments are done.
Enter a PAL B/G circle test pattern via RF. Enter Service Menu and press GREEN (PICTURE) button from remote controller to
switch to 16:9 picture mode on Service Menu. Change VS1B (Vertical Size) till the picture becomes 16:9 format. Check and
readjust Vertical Size item if the adjustment becomes improper after some other geometric adjustments are done.
Enter a PAL B/G circle test pattern via RF. Change Vertical Position till the test pattern is vertically centred. Horizontal line at the
centre pattern is in equal distance both to upper and lower side of the picture tube. Check and readjust Vertical Position item if
the adjustment becomes improper after some other geometric adjustments are done.
Enter a PAL B/G circle test pattern via RF. Change Horizontal Position till the test pattern is Horizontally centred. Check and
readjust Horizontal Position item if the adjustment becomes improper after some other geometric adjustments are done.
Enter a NTSC-M circle test pattern via RF or video inputs. Change Vertical Size till the checkered parts of test pattern on both of
upper and lower side disappear. Check and readjust Vertical Size item if the adjustment becomes improper after some other
geometric adjustments are done.
Enter a NTSC-M circle test pattern via RF or video inputs. Enter Service Menu and press GREEN (PICTURE) button from remote
controller to switch to 16:9 picture mode on Service Menu. Change VS2B (Vertical Size) till the picture becomes 16:9 format.
Check and readjust Vertical Size item if the adjustment becomes improper after some other geometric adjustments are done.
Enter a NTSC-M circle test pattern via RF or video inputs. Change Vertical Position till the test pattern is vertically centred.
Horizontal line at the centre pattern is in equal distance both to upper and lower side of the picture tube. Check and readjust
Vertical Position item if the adjustment becomes improper after some other geometric adjustments are done.
Enter a NTSC-M circle test pattern via RF or video inputs. Change Horizontal Position till the test pattern is Horizontally centred.
Check and readjust Vertical Size item if the adjustment becomes improper after some other geometric adjustmentsare done.
Enter a RGB circle test pattern via video inputs. Force the TV to RGB mode by pressing AV button from remote controller.
Change RGB Horizontal Position till the picture is horizontally centred. Check and readjust RGBH item if the adjustment becomes
improper after some other geometric adjustments are done.
60Hz Adjustments 50Hz Adjustments
50Hz. 4:3 Geometry Adjustment 60Hz. 4:3 Geometry Adjustment
50Hz. 16:9 Geometry Adjustment 60Hz. 16:9 Geometry Adjustment