4.19 Battery Assembly
Chapter 4: Removal, Replacement, and Adjustment Procedures
Affinity® Three Birthing Bed and Affinity® Four Birthing Bed Page 4 - 49
Service Manual (MAN272 REV 4)
4
Replacement
1. To install the replacement battery fuse (I), reverse the removal procedures.
2. Do the “Function Checks” on page 2-4.
Battery Charge Circuit
Beds equipped with a 65345 logic control P.C. board and 67208 interface P.C.
board may require adjustment of the battery charge circuit for optimal battery
function. Beds equipped with the 68121 logic control P.C. board will not
require adjustment of the battery charge circuit.
Adhere to all electrical safety precautions when servicing the bed's
electrical system. Failure to do so could result in personal injury or
equipment damage.
Adjustment
1. Unplug the bed from its power source.
2. Unplug the battery cable assembly (A) from logic control P.C. board
connector P5 (see figure 4-24 on page 4-48).
3. Set your VOM to measure V DC.
4. Connect the ground lead of the VOM to the negative side of C1 (J)
(see figure 4-25 on page 4-50).
5. Connect the positive lead of the VOM to the positive side of D15 (K).
The positive side of D15 is the side without a silver band.
6. Reconnect the bed to an appropriate power source.
7. Using the small screwdriver, turn the screw on potentiometer R2 (L) until
the VOM reads between 27.6 and 28.0 V DC.
8. Unplug the bed from its power source.
9. Reconnect the battery cable assembly to P5.
10. Do the “Function Checks” on page 2-4.
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