Service manual

ViewSonic Corporation Confidential - Do Not Copy VA702-3_VA702b-3
3
2. Specification
GENERAL REQUIREMENTS
General Specifications
Test Resolution & Frequency
1280 x 1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls Factory Default: Contrast = 70%, Brightness = 100%
SIGNAL INTERFACE
Video Interface
Analog Input Connector DB-15 (Analog)
Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes.
Video Cable Connector DB-15 Pinout Compliant DDC 2B.
Video Signals Video RGB (Analog)
Video Impedance 75 Ohms (Analog)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals TTL
DDC 1/2B Compliant with Revision 1.3
Video Compatibility Shall be compatible with all PC type computers, Macintosh computers,
and after market video cards.
Resolution Compatibility 640 x 350, 640 x 480, 720 x 400 (640 x 400), 800 x 600, 832 x 624,
1024 x 768, 1280 x 720, 1280 x 1024
Exclusions Not compatible with interlaced video.
Power
Power Supply
Internal Power Supply
Part Number: ADP-40AFB
Input Voltage Range
90 to 264 VAC
Input Frequency Range
47.5 to 63 Hertz
Short Circuit Protection
OUTPUT CAN BE SHORTED WITHOUT DAMAGE.
Over Current Protection
4.5 A TYPICAL AT 12 VDC
Leakage Current
3.5MA (MAX) AT 254VA C / 60HZ
Efficiency 70 % TYPICAL AT 115VAC FULL LOAD
Fuse
INTERNAL AND NOT USER REPLACEABLE
Power Dissipation
36 WATTS (MAX)
Max Input AC Current
1.2 ARMS @ 90VAC, 0.8 ARMS @180VAC