System Troubleshooting Guide
LI38xLED-series dome and zone lights use LEDs instead of incandescent lamps and therefore are not
replaceable. If one LED fails, replace the entire unit or return for repair.
SF381 Standalone Bath Station or SF382 Standalone Code Station is not placing calls
These devices look like peripheral devices, but they function electronically just like IR3xx-series Patient
Stations. They interact directly with the central equipment, rather than through an IR3xx-series Patient
Station. Therefore, refer to these troubleshooting sections:
l Comm. Fault Indication (patient station fault)
l IR3xx-series Patient Station is not placing calls
l IR3xx-series Patient Station that has been installed is not recognized by the system
SF350B Nurse/Aide Presence Station is not registering or is not working correctly
l If the device is operating, but the LEDs are not lighting, check to see if the green or yellow dome
lamps are working. If both are out, swap test the patient station and examine the peripheral con-
nector’s continuity.
l If only the lights are not working and the dome outputs are working, verify that there is roughly
+12 VDC across the orange and yellow wires at the SF350B device’s location. Verify the con-
tinuity of the red and green wires back to the peripheral connector on the patient station.
l
If the device is not operating, the inputs on the patient station can be manually triggered by the
application of the +12 VDC line (refer to Voltage Readings on page 29 for more details). The
device can be directly connected for testing, and may also be swap tested with another “known-
good” device for verification.
SF337C or SF340B Bath Stations not placing calls
l Swap test the device with another “known-good” device. If the device works correctly in another
location, examine the interconnection wiring. If it does not work, the device is suspected bad and
must be replaced or repaired.
l To verify the device, review these 3 connections: brown wire—LED drive from the patient sta-
tion, red wire—signal line to the patient station’s Bath Input, and orange wire—+12 VDC in
from the patient station. When the device is operated, the +12 VDC from the orange wire is con-
nected to the red wire to trigger the Bath Input on the patient station. This in turn activates the
LED output on the patient station, which applies ground to the LED circuit, causing it to light
via the brown wire.
l If the bath station and wiring appear to be correct, then the patient station can also be swap
tested with another “known-good” patient station.
32|IL1057 Tek-CARE300III Installation Manual
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