2.16 Battery Back-up Malfunction
Chapter 2: Troubleshooting Procedures
Affinity® Three Birthing Bed and Affinity® Four Birthing Bed Page 2 - 37
Service Manual (MAN272 REV 4)
2
2.16 Battery Back-up Malfunction
1. The battery has been properly charged and is providing power to the bed.
Yes No
Charge the battery. If this solves the problem, go to “Final
Actions” on page 2-10. Otherwise, continue to step 2.
2. Using the VOM, check the battery fuse for electrical continuity. The
battery fuse is in good condition.
Yes No
Replace the battery fuse (refer to procedure 4.19). If this solves
the problem, go to “Final Actions” on page 2-10. Otherwise,
continue to step 3.
3. Visually inspect for loose connections on cable assemblies and electrical
wires. All cable connections and wiring are properly secured.
Yes No
Secure the cable connections and wiring. If this solves the
problem, go to “Final Actions” on page 2-10. Otherwise,
continue to step 4.
4. Set your VOM to measure V DC. At the logic control P.C board, connect
the ground lead of the VOM to the negative side of C1 and the positive lead
to the positive side of D15 (the side without a silver band). The voltage is
between 27.6 and 28.0 V DC.
Yes No
Adjust the battery charge circuit (refer to procedure 4.19). If this
solves the problem, go to “Final Actions” on page 2-10.
Otherwise, continue to step 5.
5. Set your VOM to measure V AC. At the logic control P.C board connector
P2, probe pin 1 (yellow) and pin 2 (red). The voltage is approximately 12V
AC or 24V AC.
Yes No
Replace the transformer assembly (refer to procedure 4.24). If
this solves the problem, go to “Final Actions” on page 2-10.
Otherwise, continue to step 6.
6. Set your VOM to measure V DC. Probe connector P5 at the logic control
P.C. board. The voltage is between 25 V DC to 30V DC.
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, continue to step 7.
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