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

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Table 3.2 Troubleshooting (continued)
SYMPTOM POSSIBLE CAUSES CHECK TEST POINTS
8. Unit turns on and gives tones
but no displays are present.
a) Faulty 5 V display voltage (+V) TP11 (Power Supply Board)
9. “AMP” “FAIL” at start up. a) Faulty 15 V supply.
b) Faulty A to D supply voltage.
c) Transducers reference voltage.
d) Too high main supply.
TP25 (CPU Board)
TP24; 4.1 V (CPU Board)
TP21; 0.25 V (CPU Board)
TP23; 4.1 V (CPU Board)
TP2 (Power Supply Board)
10. No Main Cuff pressure a) Transducer amplifier not working. *TP26; Voltage will vary with
pressure. 0.25 to 4 V (CPU Board)
11. No Second Cuff pressure
reading.
a) Transducer amplifier not working. TP28; Voltage will vary with
pressure. 0.25 to 4 V
12. Pump does not stop running. a) Internal leak in hose or hose fittings.
b) Leak in valve manifold.
c) Transducer not working.
*TP29; Voltage will vary with
pressure. 0.25 to 4 V (CPU Board)
13. Valve fail alarm / message. a) Faulty valve driver.
b) No power to valves.
TP17 (CPU Board)
TP10 (CPU Board)
14. Battery fail
alarm / message.
Other unexplained error
codes:
“AMP” “FAIL”
“CAL” “FAIL”
“WDT” FAIL”
“BAT” “FAIL”
a) Blown battery fuse.
b) Broken battery wire.
c) Dead or depleted batteries.
d) Connect unit to ~ (AC) power to allow
batteries to charge.
15. Unit does not turn on. a) ON/STANDBY touch-switch not
working.
b) No 5 V supply.
c) No power control.
TP12 (CPU Board)
TP31 (CPU Board)
TP2 (Power Supply Board)
16. Low Battery Alarm, (allow 24
hours for batteries to fully charge.)
a) Plug unit in to allow batteries to
charge.
b) No charging voltage.
c) No 5 V charging logic voltage.
TP7 (CPU Board)
TP8 (CPU Board)
*NOTE: TEST POINT MEASUREMENTS TP21,23,26,28, AND 29 MUST BE MEASURED
WITH RESPECT TO ANALOG GROUND (TP27). FAILURE TO DO SO WILL RESULT IN
ERRONEOUS READINGS