Text preview for : CM550_4.PDF part of LG Electronics Inc StudioWorks 550M Guía del Usuario
Back to : StudioWorks 550M.rar | Home
ADJUSTMENT
GENERAL INFORMATION
All adjustment are thoroughly checked and corrected when the monitor leaves factory, but sometimes several minor adjustment may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. · Alignment appliances and tools. - Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.) - E(E)PROM with each mode data saved. - Digital Voltmeter. - White Balance Meter. - Luminance Meter. 8) Adjust trapezoid ( ) with TRAPEZOID in the alignment program or +, buttons on the monitor to be the best condition. 9) Display from Mode 2 to Mode 5 and repeat above adjustment. 4. Adjustment for White Balance and Luminance. 1) Set the White Balance Meter. 2) Demagnetize CDT with the demagnetizer. (external degaussing coil). 3) Adjust H x V size to 270 2mm x 195 2mm. 4) Display color 0,0 pattern at Mode 1. 5) Set Brightness ( ), Contrast ( ) volume to max position. 6) Set VR347 (B-BIAS) and VR357 (R-BIAS) to min and VR367 (G-BIAS) to 1/2 position. 7) Adjust Screen control on the FBT to 0.2~0.3FL of the raster luminance. 8) Adjust VR347 (B-BIAS) and VR357 (R-BIAS) to x=0.281 0.01 and y=0.311 0.01. 9) Adjust Screen control on the FBT to 0.3~0.4FL of the raster luminance. 10) Display color 15,0 box pattern (70 x 70mm) at Mode 1. 11) Set Brightness ( ), Contrast ( ) volume to max position. 12) Adjust VR850 (SUB-CONTRAST) to 55 1FL of the box pattern luminance. 13) Adjust VR313 (R-DRIVE) and VR314 (G-DRIVE) to x=0.281 0.003 and y=0.311 0.003. 14) Display color 15,0 full white patten at Mode 1. 15) Adjust VR842 (ABL) to 33 1FL of the luminance. 16) Check the x=0.281 0.01 and y=0.311 0.01 at the Contrast ( ), Brightness ( ) volume to max position and Contrast ( ) to max, Brightness ( ) volume to 10FL. 5. Adjustment for Focus. 1) Set the Brightness ( ) and Contrast ( ) volume to max position. 2) Display H character in the full screen at Mode 4. 3) Adjust to the best focus with Focus control on the FBT.
ADJUSTMENT PROCEDURE & METHOD
Set Contrast ( position. ) and Brightness ( ) volume to max
1. Adjustment for B+ Voltage 1) Display cross hatch pattern at Mode 5. 2) Adjust VR901 to 50 0.2Vdc at D932 cathode voltage. 2. Adjustment for High Voltage 1) Display cross hatch pattern at Mode 5. 2) Adjust J12 voltage to 128 0.2Vdc with VR705. 3. Adjustment for Screen Image (Factory Mode) Install adaptor and cable for adjustment such as figure 1 and run alignment program on DOS for IBM compatible PC. 1) Set E ST Switch to OFF of the adaptor. (Refer to see Figure 1.) 2) Display cross hatch pattern at Mode 1. 3) Adjust horizontal size ( ) with H-SIZE in the alignment program or +, buttons on the monitor to 270 1mm. 4) Adjust horizontal position ( ) with H-POSI in the alignment program or +, buttons on the monitor to center of the screen. 5) Adjust vertical size ( ) with V-SIZE in the alignment program or +, buttons on the monitor to 195 1mm. 6) Adjust vertical position ( ) with V-POSI in the alignment program or +, buttons on the monitor to center of the screen. 7) Adjust side-pincushion ( ) with S-PCC in the alignment program or +, buttons on the monitor to be the best condition.
- 12 -
Monitor to be adjusted
VIDEO SIGNAL GENERATOR
IBM Compatible PC
No tu se d
PARALLEL PORT
RS 23 2C
Control Line
PA
RA
C
LL
EL
Power inlet (required)
220
A
R
V-S
TO
YN
MO
NI
CS T
PO
VG
S
Power Select Switch (110V/220V) Power LED
WE
R
B
E ST Switch
F V-Sync On/Off Switch (Switch must be ON.)
A
9 15 10 5 11 6 1 5 6 1
C
13 25 1 14
5V
OFF
ON
F
5V ON 4.7K 4.7K 4.7K 74LS06 74LS06
5V
E
OFF
B
Figure 1. CABLE CONNECTION
- 13 -