Stryker 3000 - 3.3 Trendelenberg;Reverse Trendelenberg Troubleshooting Guide

Chapter Three – Troubleshooting Guides
38
3.3 TRENDELENBERG/REVERSE TRENDELENBERG TROUBLESHOOTING
GUIDE
NOTE
Prior to replacing any boards, ensure applicable cables and connections are intact (visually and mechanical-
ly). To check for +5 VDC at various points called out in the troubleshooting, use digital ground as a reference
point (negative side of C18 on CPU litter board). When measuring 110 VAC at any point, use only the neutral
(white) side of the power line as a reference point. DO NOT use digital ground as a reference point when
measuring 110 VAC.
Assure the bed motion lock is not activated on the foot board. If bed motion will not unlock, see troubleshoot-
ing section 3.9 page 48. If any one part of Trendelenberg/Reverse Trendelenberg motion is not functioning,
see appropriate troubleshooting section (i.e. bed head end lift motor not functioning see section 3.4 page 40).
If the litter is at its lowest height when Trendelenberg or Reverse Trendelenberg is activated, the litter will raise
a few inches until the height is adequate. When this height is achieved, Trend. or Reverse Trend. will proceed.
PROBLEM/SYMPTOM SOLUTION(S)
Trendelenberg does not move into proper position
(head down, foot up).
Reverse Trendelenberg will not move into proper
position (head up, foot down). Note: connector
P2, pin 7 may be used for digital ground reference.
A. Check for +5 VDC at connector P1, pin 6 of the
foot board keyboard (p/n 3000–500–943) (see
page 202 for board location). If voltage is present,
use a voltmeter and verify switches are O.K. If
switches are defective, replace board.
B. Check foot board IFC (p/n 3000–500–955) for
+5 VDC at connector P2, pin 6 (see page 202 for
board location). If voltage is not present, check for
+8 VDC at connector P3, pin 5. If +8 VDC is pres-
ent and +5 VDC is not present, replace foot board
IFC. If +8 VDC is not present, disconnect connec-
tor P3 and check for voltage at the cable connec-
tor. If +8 VDC is present at the cable but not at
the board, replace foot board IFC.
C. If Trend./Rev. Trend. motion is still uncontrol-
lable, check the litter CPU board (p/n 3000–300–
941) for +8 VDC at connector P9, pin 5 (see page
199 for board location). If voltage is not present,
check fuse F1. If fuse is O.K. and the problem still
exists, check for 110 VAC at connector P1, pin 18.
If 110 VAC is present, replace litter CPU board. If
110 VAC is not present, check power junction
board (p/n 3000–300–961) at connector P1, pin 1
for 110 VAC. If voltage is not present, check fuse
F1. Replace fuse as necessary. If fuse is O.K.
and 110 VAC at connector P1 is not present,
check connector J1, pin 2 for 110 VAC input from
power cord. If 110 VAC is present at connector
P1, replace power junction board.