TekTone Tek-CARE NC300II Operation, Installation And Service Manual page 88

System Troubleshooting Guide
82 • IL715 Tek-CARE NC300II Manual
®
This indicator turns from green to amber when there is no video signal in. Check
NC315/NC313 Monitor power indicator is amber
the video signal source and connections.
NC351(A) or NC351(A)/2 Central Equipment makes a loud buzzing noise shortly
• Power NC351(A) or NC351(A)/2 down.
after power up (internal relay is chattering)
• Check for +12 VDC line in the field wiring for a ground short.
• Verify that the pillow speaker is an SF301PI series, SF401PI series, SF401P2L,
Pillow Speaker Intercom is not working and audio is coming from the patient station
SF301DIG, SF401DIG or SF41-series device.
• Verify that the pillow speaker is properly inserted into the associated 8P8C or
DIN jack. Also check the pins inside the jack for signs of bending that might
prevent all connections from being made.
• Try the pillow speaker in another room that is known to be working correctly.
• Remove the patient station from the wall and verify that a PM311C or PM312C (for
IR311-series, IR312-series, IR319-series or IR320-series) has been installed on the
patient station. If a PM311C or PM312C module is present, verify the seating of the
module and the plug-on connector seating.
• Swap test the PM311C or PM312C module with a "known-good" module.
• Swap test the patient station with another "known-good" patient station.
NOTE: If the indication is system-wide, review POLLING PROCESSOR FAIL indication
CENTRAL PROCESSOR FAIL indication at a single master location
troubleshooting suggestions
• Turn the NC351(A) or NC351(A)/2 Central Equipment off and then back on and
wait for the system to reboot.
• If the message returns, check 485A and 485B lines to the associated NC304,
NC304LCD or NC305LCD Master Station. Refer to the
of this chapter.
• Also check the other connections from the central equipment to the master station.
• Swap test the device with another "known-good" device. If the device works
SF337C or SF340B Bath Stations not placing calls
correctly in another location, examine the interconnection wiring. If it does not
work, the device is suspected bad and must be replaced or repaired.
• To verify the device, review these 3 connections: brown wire—LED drive from
the patient station, 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 connected 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.
• 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.
See
SF341B Code Station is not placing calls
Code Fault Indication (SF341B)
Voltage Readings
earlier in this chapter for troubleshooting advice.
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