Zimmer A.T.S. 2000, Operators & Service Manual

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Table 3.2 Troubleshooting
To aid in unscheduled maintenance, the following list
delineates a number of possible malfunctions that could
occur with the unit. The most likely causes are shown for
each symptom. While it is not practical to enumerate every
conceivable malfunction and all possible causes, this list in
conjunction with the attached schematics will be of assis-
tance in isolating the most common problems.
Expected reading on the CPU and Power Supply boards
are shown in Table 3.1. The measurements are to be made
at room temperature with the cuffs disconnected, and the
unit plugged in. All voltage measurements are with respect
to ground unless otherwise noted.
CAUTION:
HIGH VOLTAGE ELECTRICAL HAZARD. HIGH
VOLTAGE WILL BE PRESENT ON THE POWER INPUT
MODULE AND POWER SUPPLY BOARD.
ALL SERVICE WORK MUST BE DONE BY QUALIFIED
TECHNICIANS.
SYMPTOM POSSIBLE CAUSES CHECK TEST POINTS
1. Cuff(s) will not inflate. a) Touch-Switch Panel connector not
properly plugged into P9.
b) Tubing inside unit may be pinched or
improperly connected.
c) Valve(s) stuck.
d) Pump not properly plugged into P10.
2. Cuff(s) will not deflate. a) Touch-Switch Panel connector not
properly plugged into P9.
b) Deflate touch-switch not depressed long
enough.
c) Valve(s) stuck.
d) Deflation on one cuff will not be
permitted if in Bier Block procedure.
Deflate touch-switch must be depressed
within 5 seconds after “CUFF” “NOT”
“DEFL” message appears.
3. No ~ Indicator light.
Unit still runs.
a) Unit not plugged into wall outlet.
b) No power at wall outlet.
c) Bulk Supply harness
loose/disconnected at P2 or P3.
d) Blown Fuses(s).
4. Alarm Silence Switch not
working.
a) Connector not properly plugged into P1.
b) Broken wire.
c) Non-silenceable alarm (hardware failure).
d) Faulty switch.
5. Safety Circuit Failure. a) 32 kHz clock not working correctly. TP16 (CPU Board)
6. No sound from speaker. a) No output from audio amp U1.
b) No output from CPU.
c) Faulty 12 volt supply.
TP6 (CPU Board)
TP22 (CPU Board)
7. Alarm Light does not turn on. a) Alarm lamp burned out.
c) Broken wire.