(2-l) MAIN PWB ADJUSTMENT
(1)
(2)
(3)
(4)
(5)
Signal 1
(VGA350)
Horizontal Hold Signal 10 (1024X768(76))
Receive signal lO(all "H").
(a)
(b)
(c)
( d )
(g)
Adjust VR852(5.14V ADJ) so that the voltage across TP43 and
GND on Adjustment jig (TP-A and
is OV ±O.O5V.
Short SW46 on Adjusting jig (TP-A and
and adjust VR501
(H HOLD 1) so that there is one screen.
Open SW46 on Adjusting jig (TP-A and
and check for
synchronization.
Receive signal lO(all "H").
Short SW46 on Adjustment jig (TP-A and
and adjust VR502
(H HOLD 2) so that there one screen.
Open SW46 on Adjustment jig (TP-A and
and check for
synchronization.
Horizontal Raster Centering Signal 12 (1024X768(76))
(a) Receive an all-black signal.
(b) If necessary, adjust the brightness control so that the raster is
faintly illuminated.
(c) If necessary, press the user control switch(SW101) and compress
the amplitude until both edges of the horizontal raster can be
seen. (Adjust the HORIZONTAL RASTEP size about 27Omm)
(d) Adjust VR552 so that the raster is within the following limits
space between bezel and raster right and left space difference
± 2 m m .
Vertical Linearity Signal 6 (800x600(56))
Perform this procedure only necessary.If needed:
(a) Receive a crosshatch pattern.
(b) Adjust VR401(V SUB HEIGHT) so that the vertical screen size is
approximately 195mm.
(c) Adjust VR402(V LIN) to obtain the best vertical linearity.
Vertical Sub Height Signal 1 (VGA350)
(a) Receive a crosshatch pattern.
(b) Adjust the user control V POS switches(SW107/108) to center the
vertical screen position.
(c) Use the V SIZE switches(SW105/106) to increase the vertical
screen size to the maximum size.
(d) Adjust VR401(V SUB HEIGHT) so that the top and bottom horizontal
lines of the crosshatch pattern just meet the front bezel.
Side Pin Signal 6 (800x600(56))
(a) Turn the VR431 mechanical center.
(b) Receive a crosshatch pattern (with outside border).
(c) Adjust the user control switches (SW101,102,105,and 106) to obtain
the following picture size.
Vertical: approx. 1 9 5 m m
Horizontal: approx. 260mm
(d) Short SW43 on Adjustment j ig.(TP-A and
(e) Push MEMORY RECALL SWITCH(SW109) for at least 2 seconds.
(f) Release the short.
(g) Adjust VR403 so that the vertical lines at left and right edges
of the screen are straight.
19
Содержание MultiSync 4FGe
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Страница 14: ...CN A CN C CN J CN L CN I VIDEO PWB ASSY PWE 315A CN R CN G I CN B CN HC CN CE CN M CRT PWB ASSY PWE3158 13 ...
Страница 15: ...SW REG PWB ASSY VMA CN SW CN Z CN D C CN K SW REG PWB ASSY VMB R B EE 14 ...
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