8
4. ADJUSTMENT
4-1
ADJUSTMENT CONDITIONS AND PRECAUTIONS
1. Approximately 30 minutes should be allowed for warm up before proceeding.
2. Adjustments should be undertaken only on those necessary elements since most of them have
been carefully preset at the factory.
4-2 MAIN ADJUSTMENTS
NO. FUNCTION
LOCATION
DESIGNATION
1
B + ADJ
PCB - MAIN
VR902
2
SCREEN ADJ
FLY BACK TRANS
T402
3
FOCUS ADJ
FLY BACK TRANS
T402
4
ABL ADJ
FACTORY OSD
ABL FUNCTION
- SELECT
PCB - MAIN
<SW101>
- DOWN (-)
PCB - MAIN
<SW102>
- UP (+)
PCB - MAIN
<SW103>
5 FUNCTION
ADJ
- MENU
PCB - MAIN
<SW104>
4-3 ADJUSTMENT METHOD
1. B + & HV voltage adjustment:
A. Chroma-2000 Signal generator or PC equivalent set mode 1, VGA 640X480 pattern 1.0 .
B. Connect a DC Volt meter between D925 cathode and ground, then adjust VR902 to be 65.0
VDC
for CPT CRT.
2. Factory preset Timings Adjustment:
A. Press MENU Key to show OSD window press Up or Down Key to switch the functional controls.
B. Press the Up Key to select the function, then press the SELECT Key. While do not release
the SELECT Key until the OSD window changed to the Factory preset window.
C. The Factory preset window contains the following functional controls. Select one of the control.
Then press the Up/Down Key to adjust its value for the optimum picture.
(The OSD menu for factory preset FOR WT CPU)
Summary of Contents for E773c Series
Page 16: ...16 6 2 ABNORMAL DISPLAY 1 NO SIGNAL ON SCREEN ...
Page 21: ...21 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...
Page 38: ...38 9 BLOCK DIAGRAM IC801 NT6812K ...
Page 39: ...39 9 1 BLOCK DIAGRAM SMPS ...
Page 41: ...41 ...
Page 42: ...42 IC801 NT6812KG ...
Page 43: ...43 ...
Page 44: ...44 IC901 STR G5643D 1 2 3 4 5 D S GND VCC OCP FB ...
Page 45: ...45 11 PCB LAYOUT ...
Page 46: ...46 ...
Page 47: ... 47 12 CHEMATIC DIAGRA ...
Page 48: ...48 ...
Page 49: ...49 ...
Page 50: ...50 ...