Adjustments On Installation; How To Adjust - Samsung CC9511 Service Manual

ADJUSTMENTS ON INSTALLATION
HOW TO ADJUST
Before attempting any of the following adjust-
ments, the display should be powered up for a
period of 20 minute prior to the adjustment.
1. Switch on the power, and confirm the power
indicator (green light). If it does not:
a) Check power source and connections
b) Check fuse
c) Call a service engineer.
2.
Turn the contrast and brightness controls clock-
wise fully.
3.
If no picture appears,
a) Check the sync signal
*
H/V separate sync mode
: sync signal input
*
H/V composite sync mode
: sync signal input
*
Composite sync on green mode
: green sync signal input
Three type of sync mode,
HN
separate sync
mode, H/V composite sync mode and com-
posite sync on green mode are automatically
selectable. The priority is
HN
composite sync.
b) Check the 75 ohm termination switch.
This unit included beam current limit circuit.
If limit circuit is operated, no picture appears.
After checking termination switch, switch on the
power again.
4.
When a picture appears, notice the stability
of the picture. If it is not stable or it is not dis-
played at the center, swicth off the mains supp-
ly and remove the lid for adjustment at back
cover by removing only one screws (refer to
Fig. 2).
5. Power on and adjust controls with plastic
driver. Note that it is important to use a plas-
tic driver. Otherwise the adjustment could
result in a short circuit and breakdown of dispa-
ly.
6. To display appropriate picture on screen, ad-
just the control with plastic driver, refer to Fig.
3. and Table 1.
23
7. If you want to readjust another controls -
Focus, Screen, H-center, H-linearity, R.G.B-drive,
R.B-bias, NTSC/XOR Selector - remove the
back cover by removing only four screws.(refer
to Fig. 4, 5, 6, 7, and Table 2 ).
8. In the case of horizontal stripes at top posi-
tion, change the NTSC/XOR selector switch.
9. If there is any problem or trouble in the read-
justment above, contact the supplier of the
equipment.
Finally, power off and replace covers as it was
Turn brightness and contrast controls to their nor-
mal operating position of yours.