CARESCAPE Monitor B450
152
2062973-003
11.5 Network status LEDs
The network status LEDs help in troubleshooting network connectivity and communication
problems. These LEDs are located next to each network connector in the rear of the patient
monitor.
There is one dual purpose indicator LED for each network connector:
•
The LED is lit to indicate a Link, i.e., the patient monitor is physically connected to a
network.
•
The LED is flashing to indicate Activity, i.e., the patient monitor is either transmitting or
receiving data packets over the network.
ACDC (green, H7)
The green ACDC LED should be lit when the patient monitor is
connected to the AC mains, even if the patient monitor is in standby
mode. A lit LED indicates that the DC/DC board receives the 15.2-16.2
VDC from the AC/DC power supply unit.
If the ACDC LED is not lit when the patient monitor is connected to live
AC mains, check the patient monitor for one of the problems:
•
Main fuses are blown.
•
AC/DC cable is disconnected from DC/DC board.
•
Faulty AC/DC power supply unit (especially, if the patient monitor
operates normally when it is battery powered).
•
Faulty DC/DC board (especially if the patient monitor does not operate
neither on AC mains nor battery).
+ 12 V (green, H3)
These secondary voltages are created by the DC/DC board and they
should be lit when the patient monitor is turned On and operates
normally.
If one of the secondary voltages is not present (LED not lit) when the
patient monitor is turned On, the DC/DC board is most likely faulty.
If +15VMOD LED is not lit it may be because DC/DC board has not got
a request from CPU via communication to 15VMOD circuit
breaker as such.
+ 15 VMOD (yellow, H5)
+ 5 V (green, H4)
These secondary voltages are created by the CPU carrier board and
routed to the DC/DC board. They should be lit when the patient
monitor is turned On and operates normally.
If one of the secondary voltages is not present (LED not lit) when the
patient monitor is turned On, the CPU carrier board is most likely
faulty.
+ 3.3 V (yellow, H2)
LED
Description
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