Neotec NT-3500 - Page 6

5. ADJUSTMENT
PROCEDURES
5.1 INITIAL SETTINGS
Before turning on the power, all initial settings shall be positioned as following (Clockwise and
counterclockwise directions shall be followed from a position facing the front of the monitor
itself.)
5.1.1 Set the R.G.B. Bias pots R938, R937, R936, driver
R950, R951, R952
counterclockwise at center position.
5.2
SMPS DC OUTPUT SETTING
5.2.1 Plug the AC line cord directly into a 120 V AC 60Hz outlet, then turn the AC power
switch on.
5.2.2 Plug the Video cable directly into a compatible Signal Generator. Set it to the
crosshatch pattern video signal.
5.2.3
Adjust the Ru 11 to set the horizontal deflection B+ (the connection point of D106)
tolOO.00 +
-0.50
VDC.
5.2.4
Check all the other output DC voltages or AC wave to meet the following specs:
1)
The connection point ofDlO9 = 140V + -2.OVDC
2)
The connection point of D107 =
26.5V
+ -1.OVDC
3)
The connection point of R130 = 12.OV +
-0.5\'DC
4)
The connection point of(FBT #9/R429) = 24 Vp-p + -lVp-p
5.3
H-HOLD SETTING
5.3.1
Change the video signal to a compatible Signal Generator to a
350
line color bar
pattern video signal. (NT-3602 480 LINE)
5.3.2
Short pin 1 of 1C401 to ground through a 100 uf'16vEC cap, adjust the R414 tp get
the picture to stand up vertically, then release the ground shorting.