Video Pcb - GE Medical Systems Solar 9500 Service Manual

AC Mains Input Power Requirements

Video PCB

Revision A
Theory of Operation: Subassemblies
All components used in the supply mains input circuitry are UL and IEC
certified and meet all safety and constructional requirements of UL2601-
1 and IEC60601-1 as part of patient care Class 1 medical electrical
equipment.
AC Mains Power Entry Assembly
An AC mains power entry assembly includes a male input connector with
an AC power switch. The AC power switch breaks both line and neutral.
AC Mains Power Fusing
Both sides of the AC mains, line and neutral, are individually fused.
Fuses are located on the circuit board and are type T rated at 6.3
amperes
AC Mains Safety Ground
A grounded connection is provided from the grounding pin on the AC
mains power entry assembly to a stud at the chassis.
This Solar 9500 Video Circuit Board Assembly provides an analog RGB
video signal that is input to a video monitor to provide the display for the
Solar 9500 Information Monitor. The circuit board interfaces to the Solar
9500 Processor via the PCI-Bus.
The video display format is 1024 horizontal x 768 vertical x 16 bit pixels
at 70 Hertz noninterlaced. The RAMDAC palette provides 65,536 colors
selected from a possible 16 million colors.
The circuit board supports multiple dynamic (panning and scrolling)
windows and contains enough video memory for 2 and 2/3 screens of data
on the dynamic video plane and enough video memory for one screen of
data on the static video plane. The dynamic and static video planes may
be overlayed or underlayed and use transparency to provide the effect of
scrolling or panning data on the display along with stationary text or
data. Window attributes, including scrolling and/or panning rates and
static plane overlay or underlay, are selectable on a window by window
basis. A 64 x 64 pixel three color cursor is available on the display.
A Fujitsu SparcLite MB86831 32-bit processor is used on the circuit
board and a minimum of 512 KBytes of memory are available for
program and windowing parameter memory. The 512 KBytes of program
and windowing parameter memory physically reside in the unused
portion of the static plane VRAM (Video Random Access Memory).
A block diagram of the Solar 9500 video circuit board is shown in the
following figure:
Solar 9500 Information Monitor
2001085-061
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