Adjusting Produce - ViewSonic VX715 Service Manual

5. Adjust Procedures
5.1 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.
3. ESD protection is needed before adjustment.
5.2 MAIN ADJUSTMENTS
NO. FUNCTIONS
1. White Balance
2. GEOMETRY
5.3 ALIGNMENT PROCEDURES
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
1. Adjust of White Balance
1). How to do the Chroma-7120 MEM. Channel setting
A. Reference to chroma 7120 user guide
B. Use " SC" key and " NEXT" key to modify xyY value and use "ID" key to modify the TEXT description Following is
the procedure to do white-balance adjust
2). Setting the color temp. You want
A. MEM.CHANNEL9 (9300 color):
9300 color temp. parameter is Wx = 0.283 ±0.03;Wy = 0.298 ±0.03;
ViewSonic Corporation
R115
10K 1/16W
BL_ADJ
C114 PMBS3904
1uF/16V
0805
R121
220 1/16W
BL_ON_OFF
PMBS3904
C119
0.1uF
DESIGNATION
Function Key
Function Key
+5V
R112
1K 1/16W
R101
Q101 4.7K
1
+5V
C
2N3904
R119 2N3906
1K 1/16W
B E
R122
Q103 4.7K
1
C120
0.1uF
20
1/16W
BRIGHTNESS
1/16W
BACKLIGHT