Hill-Rom Advanta P1600, Service Manual

Page: 150 / 429

Theory of Operation
Chapter 3: Theory of Operation
Page 3 - 12 Advanta™ Bed Service Manual (man168ra)
Figure 3-20. Hilow/Knee Sensor PN 63885
Figure 3-21. Inner Patient II Board (B Model Beds) PN 67203
Figure 3-22. Advanta™ Bed Wiring Diagram (B model beds)
Theory of Operation
Logic Control P.C. Board—P/N 63285
The logic module consists of several assemblies connected together to produce
the operation of four motors used in the bed frame. A caregiver control
assembly, patient control assemblies, and the drive limit assemblies are
contained in each bed frame. Each assembly is described with an explanation
of functions and location in the bed.
The logic control P.C. board assembly, part number 63285, is the heart of the
articulation system (see figure 3-23 on page 3-16) and (see figure 3-24 on page
3-17). Located on the retractable frame at the foot end of the bed, it is easily
accessible under the dust cover. All motor control outputs are based on the
logic control inputs received. The inputs received by logic control consist of
the patient siderail control inputs on connector P13, the footboard interface
inputs on connector P15, and the limit switch inputs on connectors P19 and P2.
These signals represent the inputs to the combinatorial logic used to describe
Refer to fold-out FO 3-16 at the rear of this manual.
Refer to fold-out FO 3-17 at the rear of this manual.
Refer to fold-out FO 3-18 at the rear of this manual.