ViewSonic VX715 Service Manual

ViewSonic Corporation
20
Q101
PMBS3904
32
1
C119
0.1uF
0805
BACKLIGHT
C114
1uF/16V
R101
4.7K 1/16W
R122
4.7K 1/16W
C120
0.1uF
R112
1K 1/16W
R115
10K 1/16W
B
+5V
+5V
BL_ADJ
R119
1K 1/16W
2N3906
BRIGHTNESS
R121
220 1/16W
Q103
PMBS3904
32
1
E
2N3904
BL_ON_OFF
C
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 DESIGNATION
1. White Balance Function Key
2. GEOMETRY Function Key
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 VX715 Specifications

General

Response time	25 ms
Display diagonal	17 \
Display resolution	1280 x 1024 pixels
Vertical scan range	85 Hz
Horizontal scan range	82 kHz
Viewing angle, vertical	130 °
Viewing angle, horizontal	140 °
Display brightness (typical)	300 cd/m²
Panel mounting interface	100 x 100 mm
Power requirements	AC 110/230 V ( 50/60 Hz )
I/O ports	1 x VGA - 15 pin HD D-Sub (HD-15) 1 x DVI-D - 24 pin digital DVI
Compatibility	PC/Mac
Certification	TCO '03, FCC Class B certified, CE, MPR II, UL, TUV GS, VCCI, C-Tick, BSMI, ISO 9001, GOST, cUL, EPA Energy Star, GS, ISO 13406-2, NEMKO, NOM, PCBC, SASO, TCO '99, ISO 14001, CB, CCC, TUV Ergo, PSB
Market positioning	-
Power consumption (typical)	35 W
Operating relative humidity (H-H)	20 - 90 %
Maximum operating temperature range (T-T)	0 - 40 °C

Weight and Dimensions

Depth (without stand)	176 mm
Width (without stand)	388 mm
Height (without stand)	438 mm
Weight (without stand)	5000 g