Siemens SC 7000 Service Manual page 35

SC 7000 and SC 9000XL Patient Monitors
6.2 Electrical
Specifications
6.2.1 Power Supply Input
6.3 System Power
Specifications
6.3.1 Maximum Power Summary
6.3.2 Main Battery Specifications
6.3.3 External Battery
Specifications
7 Front Bezel Board
7.1 Introduction
7.2 Functional Description
ASK-T898-03-7600
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The following specifications indicate the design limits of the power system
and do not relate to a present design configuration of the SC 7000 or SC
9000XL.
Docking Station, PSL Source (measured at monitor connectors)
11.0 to 15 volts DC @ 6.0 Amps Max.
Buss Fault Detection <8.97 V±1%
Battery Source: 12V Lead Acid, 9.8 to 15 VDC @ 6.0 Amps Max.
Note: Due to the voltage measurement tolerance of the battery
comparitors, and resistive voltage drop, all VBUSS loads must
function to a minimum voltage of 9.4 volts. They must also ride
through a VBUSS dip of 0.4 volts for 25µsec.
Total 68.2 Watts
Typical transport power = 19.4 watts (backlight = low, NBP = 15 min.
interval, no pods or cartridges, taxi and ethernet disabled, no alarms)
Voltage 12V
Capacity 3.4 Ah
Discharge Time 75 minutes
Charge Time 4.5 hours
Voltage 12V
Capacity 2.3 Ah
Discharge Time 50 minutes
Charge Time 3.5 hours
The Front Bezel Board provides an interface to the various operator related
functions. The interface consists of circuitry and connectors that allow the
main processor to access all of the operator related functions.
The Front Bezel Board provides an interface between the main board and
the front bezel components. It is a cable harness for these components and
is unique in its construction. The front bezel board is made with a process
called "rigid - flex" allowing the board to act as a flex cable. This board may
be flexed for service, however CARE must be taken not to bend this
material at a sharp angle. This process allows direct connection to the LCD
assembly. The front end board mates to the main processor via a "floating"
44 pin high density D connector. This connector has a mechanical float to
allow the front and back of the unit to be snapped together without concern
for a cable between the two halves. The 44 pin D connector attaches to the
processor board with a flex cable.
The Front Bezel Board provides connectors and circuitry need for the
following functions:
• LCD display and Power Switch
• LCD Backlight Invertor
Siemens Medical Systems, EM-PCS Danvers
NOT A CONTROLLED DOCUMENT
Service Manual
19