Hill-Rom Advanta P1600, Service Manual

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2.17 ZoneAire® Sleep Surface Sensor EEPROM—Error Code 2-4
Chapter 2: Troubleshooting Procedures
Advanta™ Bed Service Manual (man168ra) Page 2 - 39
2
2.17 ZoneAire® Sleep Surface Sensor EEPROM—Error Code 2-4
This error occurs when the circuit detects a faulty reading due to shorted or
open communication lines between the control circuit and the pressure sensing
circuit. The most common cause for this error is a faulty P.C. board or cable.
Troubleshooting this error in the field would take much time and an
oscilloscope. Therefore, this method requires inspecting and replacing parts.
After inspecting or replacing such parts in the sequence listed, press the sleep
surface power switch to determine if the problems have been corrected.
SHOCK HAZARD:
Unplug the bed from its power source. Failure to do so could result in
personal injury or equipment damage.
CAUTION:
To prevent component damage, ensure that your hands are clean, and
handle the P.C. boards by their edges only.
CAUTION:
When working with electronics, wear an appropriate static strap.
Equipment damage can occur.
1. Unplug the bed from its power source.
2. Inspect the main cable connectors (A) and pins under the foot section for
bent, recessed, or missing pins (see figure 2-9 on page 2-40). Replace or
repair damaged pins, and connect the cable. This solves the problem.
Yes No
↓ →
Go to step 4.
3. Go to “Final Actions” on page 2-17.
4. Replace the sensor surface cable (see figure 5-25 on page 5-72).
This solves the problem.
Yes No
↓ →
Go to step 6.
5. Go to “Final Actions” on page 2-17.