Criticare Systems, Inc.
VitalCare
TM
506N3 Series
Service Manual
Page 8-1
Section 8 — Troubleshooting
Troubleshooting Guide
Symptom
Problem
Solution
Unit won’t power up
• Battery is discharged
• No AC power at outlet
• Main power fuse is blown
• Poor keypad cable connect
• Bad keypad switch
• Bad Main Board
Connect AC power cord
Use alternate outlet
Replace power fuse(s) by the AC input
Reposition ribbon cable into Main Board
Replace keypad membrane
Replace Main Board and software
Monitor shuts off
• Automatic shutoff after 30min.
• Drained battery
• Bad software
• Bad Main Board
Press the ON/OFF key
Connect to AC power
Update software
Replace
Main Board and reprogram
Functions not
available
• Default settings wrong
• Incorrect software
• Degraded software
Return to factory default settings
Update software
Replace software
LCD display blank
(LEDs functional)
• Contrast is misadjusted
• Bad LCD Board connection
• Bad LCD Board
Adjust
CONTRAST
in the
CONFIGURATION
menu
Check pins and reconnect
Replace LCD Board
Leaks in NIBP system
• Defective cuff
• Defective hose
• Damaged/loose NIBP fitting
• Stripped insulator
• Leaky pneumatics & pump
Replace cuff
Replace hose
Replace/tighten Quick-Connect fitting
Replace nylon insulator and O-ring
Replace NIBP mechanical assembly
Fails performance test
• Leaks in NIBP system
• Poor calibration
• Defective pump or valves
• Bad transducer
See above
Recalibrate NIBP
Replace NIBP mechanical assembly
Replace NIBP mechanical assembly
NIBP not functioning
• NIBP module turned off
• Bad NIBP switch
• Pump not running
• Failed pump motor
• Bad Main Board
• Bad NIBP Board
Turn on NIBP in the
CONFIGURATION
menu or
ensure
1020
is selected for the
NIBP
setting
in
BOARD SETUPS
in the service menu.
Check pump wires to NIBP Board
Check pins on NIBP Board & reconnect
Replace pump
Replace Main Board and software
Replace NIBP Board and software
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