Siemens SC 7000 Service Manual

Service Manual SC 7000 and SC 9000XL Patient Monitors
16 Siemens Medical Systems, EM-PCS, Danvers ASK-T898-03-7600
NOT A CONTROLLED DOCUMENT
7k9kXLTM.c2.CD_ROM.fm/04-99/kaupp
Figure 2-7 Power Conversion
5.2 Outputs
The pod com subsystem has four channels. Channel A is dedicated to the
two internal front ends; the MultiMed and HemoMed. Channel B is
dedicated to the cartridge slot in the back of the unit. This connector does
not require patient isolation and has higher power than the pod com
connectors. Channels C and D are both used to communicate with external
pods. They have full patient isolation for both power and data.
5.3 Error Handling
The pod com channels provide error detection by performing CRC checks
on data in both directions. CRC errors are reported to the front end
processor through interrupts.
6 Power Conversion
Refer to Figure 2-7.
6.1 Power Control
6.1.1 Power Buss Most monitor loads are powered from a DC power buss, called VBUSS,
within the monitor. VBUSS powers the +3.3VDC, +5.0VDC, ±12VDC,
+40VDC and charger power converters. VBUSS also powers the external
pods, cartridge, strip recorder and backlight. The NBP pump and valves as
well as the internal multimed and hemomed front ends are powered from
the regulated +12V supply.
6.1.2 Control and Load
Sequencing
The switching of the VBUSS power inputs and the power converters is
managed by the power supply gate array. This gate array controls the
power on and power off of the monitor, and the battery charging process.
PSL
Auxiliary
Battery
Main
Battery
Power
Conversion
ASIC
MUX
Enable
Switches
+3.3V
+5.0V
±12V
+40V
Batter
y
Char
g
er
Pod Com
Backlight
Cartridge
Recorder
Battery
Computer
Section
+12VDC
+40V
V Buss
Docking Station
Status ControlOn/Off
Main Processor
NBP Valves
NBP Pump
HemoMed
Power
MultiMed
Power

Siemens SC 7000 Specifications

General

Brand	Siemens
Model	SC 7000
Category	Measuring Instruments
Language	English