Stryker 3000 - Page 52

Chapter Three – Troubleshooting Guides
52
3.11 TV/RADIO TROUBLESHOOTING GUIDE
NOTE
Before proceeding, check Docker cable visually for proper connection and/or external damage Ensure Dock-
er cable is compatible with Nurse Call system being utilized. Check +5 VDC at various points called out in
the troubleshooting by using digital ground as a reference point (negative side of C18 on the litter CPU board).
Digital ground reference may also be used at headwall IFC board connector P1, pin 7. Prior to replacing any
boards, ensure applicable cables and connections are intact (visually and mechanically).
Verify hospital’s TV system is compatible with TV/Radio option on bed. Depress each TV/Radio switch one
at a time to isolate possible problem. Observe whether any switches are not functioning properly. Isolate
the problem to an individual siderail and then to an individual switch board module. If bed is equipped with
optional pendant, remove pendant from bed. If problems are isolated to the pendant, replace the pendant.
PROBLEM/SYMPTOM SOLUTION(S)
TV/Radio does not turn on and/or the channels will
not change when switch is pressed.
A. If problem exists in only one siderail, check for
+5 VDC at the following locations:
1.) Left TV board (p/n 3000–404–919), connector
J1, pin 1.
2.) Right TV board (p/n 3000–404–907), connector
J1, pin 1. Using a voltmeter, verify TV switch is
O.K. If voltage is present and problem still exists,
replace boards (see page 200 & 201 for board
locations).
B. Check inside siderail Gatch/Fowler boards (p/n
3000–400–917, left inside & 3000–400–901, right
inside) for +5 VDC at connector P1, pin 10 for both
boards. If voltage is present and problem still ex-
ists, replace boards. Note: if Gatch/Fowler inner
siderail board is defective, all non–motion func-
tions will cease to work in the entire siderail.
C. Check headwall IFC (p/n 3000–303–933) for
+12 VDC at connector P6, pin 1 on board (see
page 199 for board location). Check for +5 VDC
at connector P5, pin 11 on board. Replace board,
if necessary. With Docker cable disconnected,
place an ohmmeter across pins 33 and 34 of DB37
headwall cable jack. These pins are across the
corresponding relay (RLY6) contact points. Ohm-
meter should measure >1 M ohm normally and <2
ohms when siderail switch is pressed. If relay
does not operate correctly, replace headwall IFC
board.
D. If siderails still cannot control TV/Radio chan-
nel, check litter CPU board (p/n 3000–300–941)
for +5 VDC at connectors:
1.) P10 right siderail, pin 10 (pin 5, +8 VDC, pin 7,
digital ground).
2.) P11 left siderail, pin 10 (pin 5, +8 VDC, pin 7,
digital ground). (See page 199 for board location).
If voltage is not present, check fuse F1. If fuse is
O.K. and voltage is not present, replace litter CPU
board (see page 115).