ViewSonic VX715 Service Manual

ViewSonic Corporation
19
4.4 Panel Control Circuit
The high level output from U104 makes Q107, Q108 break through, and offer 5V to panel when work well. The output is
low level when it’s saving energy state and Q107, Q108 break off, so the panel doesn’t work
C116
0.1uF
R113 0 1/16W
+12V
+12V
Q107
PMBS3904
32
1
R114 NC
+5V
C180
0.1uF
PANEL_POWER
R217
10K 1/16W
+5V
R219
NC
MCU_VCC
U108
AO3401
+3.3V
R216 NC
+
C115
22uF/16V
R220 4.7K 1/16W
R218
10K 1/16W
PANEL_PW
4.5 On/Off /Brightness control circuit
ON/OFF control: When it works well, the outputs are low level, and high in saving energy state.
Brightness control: When it works well, the output PWM pulse from PIN55 of IC101 adjusts the brightness, the smaller
the duty, and the higher the brightness.

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