Hill-Rom Affinity Three - Bed Air Surface Malfunction

2.12 Bed Air Surface Malfunction
Chapter 2: Troubleshooting Procedures
Page 2 - 28 Affinity® Three Birthing Bed and Affinity® Four Birthing Bed
Service Manual (MAN272 REV 4)
2.12 Bed Air Surface Malfunction
The bed air surface does not function properly.
1. Activate all bed air surface switches in both siderails. Only one switch does
not work.
Yes No
Go to step 4.
2. Replace the P.C. switch board containing the faulty function for caregiver
controls (refer to procedure 4.29) or for patient controls (refer to procedure
4.28). This solves the problem.
Yes No
Go to step 4.
3. Go to “Final Actions” on page 2-10.
4. Activate all bed air surface switches in both siderails. All of the switches in
one siderail work while several of the switches in the opposite siderail fail.
Yes No
Go to step 7.
5. Replace the P.C. switch board(s) containing the faulty functions for
caregiver controls (refer to procedure 4.29) or for patient controls (refer to
procedure 4.28). This solves the problem.
Yes No
Go to step 7.
6. Go to “Final Actions” on page 2-10.
7. Activate one of the bed air function switches. Audible clicks of the relay
from the air system control board can be heard.
Yes No
Go to step 9.
8. Go to step 12.
9. Set your VOM to measure V DC. At the logic control P.C. board connector
P8, probe pins 7, 8, 9, 11, and 12 while pressing each siderail air function
button (see table 2-2 on page 2-29). The pin voltages are correct.
Yes No
Replace the logic control P.C. board (refer to procedure 4.23).
If this solves the problem, go to “Final Actions” on page 2-10.
Otherwise, contact Hill-Rom Technical Support.