Service manual

GE MEDICAL SYSTEMS PROPRIETARY TO GE

IRECTION , REVISION

5-8 Section 5-2 - Block Diagrams and Theory

5-2-5 VIC Card

VIC Card perform video conversion operations and Power on/off control.

• Video Decoder: Video decoder convert S-VHS or composite video analog signal to digital RGB data

and send the RGB digital data into BEP main memory on motherboard through PCI bus. And then

this video digital data is displayed on console monitor. Video analog signal comes from rear panel.

This video decoder also have IIC bus interface logic.

• VGA to TV Convertor: This device convert the VGA display signal to TV display signal for B/W

printer and color printer and VCR recording.

• Shutter Control CPLD: Shutter signals for analog B/W printer and color printer are generated by this

CPLD. And this CPLD is controlled by video decoder via IIC bus.

• Power Control FPGA: This FPGA generates power on/off signal. This device is alive always by live

DC power which comes from ACI assy in AC Power Assy. So this device monitor the status of

power on/off switch on the keyboard. If power switch will be pushed once, this device turn on the

LV power supply in AC power assy and after few seconds, turn on the BEP assy.

Figure 5-6 VIC Board