Stryker GOBED+ FL20E User manual

TECHNICAL ASSISTANCE AND PARTS
1 800 428-5025 (Canada)
E-mail (Canada only): [email protected]
1 800 327-0770 (United States)
Manufactured by Stryker Bertec Medical Inc
72-0440 R1.2 September 2003
F15-44-E-APrinted in Canada
MAINTENANCE MANUAL
ELECTRIC ACUTE CARE BED
Model FL20E (USA: 2501)

TABLE OF CONTENTS
1. INTRODUCTION................................................................................................................... 5
1.1 Specifications................................................................................................................. 5
1.2 Technical Support........................................................................................................... 6
1.3 Warning, Caution, Note Definition................................................................................... 6
1.4 Static Discharge Precautions.......................................................................................... 6
1.5 Warranty......................................................................................................................... 7
Limited Warranty.......................................................................................................... 7
To Obtain Service and/or Parts.................................................................................... 7
Return Authorization .................................................................................................... 8
Damaged Merchandise................................................................................................ 8
1.6 Symbols ......................................................................................................................... 8
2. PREVENTATIVE MAINTENANCE........................................................................................ 9
2.1 Bed Cleaning and Mattress Care.................................................................................... 9
Cleaning Beds.............................................................................................................. 9
Mattress Care .............................................................................................................. 9
2.2 Lubrication Requirements............................................................................................. 10
Annual Checklist ........................................................................................................ 10
Two Year Interval Checklist........................................................................................ 10
Five Year Interval Checklist........................................................................................ 10
Lubrication Points Illustrated ........................................................................................ 11
2.3 Preventative Maintenance Program.............................................................................. 12
Annual Checklist ........................................................................................................ 12
Recommended Spare Parts....................................................................................... 13
3. TROUBLESHOOTING........................................................................................................ 15
3.1 Troubleshooting Guide................................................................................................. 15
4. MAINTENANCE PROCEDURES........................................................................................ 29
4.1 Siderail Assembly Replacement................................................................................... 29
Foot Siderail Assembly (Attached to Support Frame)..................................................... 29
Foot Siderail Assembly (Attached to Foot Section) ........................................................ 30
Head Siderail Assembly............................................................................................... 31
Foot Rail..................................................................................................................... 32
Head Rail.................................................................................................................... 32
4.2 Foot Board Control Panel Component Replacement.................................................... 33
Control Panel Membrane............................................................................................. 33
Scale Display (Optional Equipment).............................................................................. 34
4.3 Siderail Control Panel Component Replacement.......................................................... 35
Control Panel Membrane............................................................................................. 35
Optional Nurse Call Speakerphone............................................................................... 36
4.4 Control Board Replacement ......................................................................................... 37
Motor Control Board .................................................................................................... 37
Scale Control Board (Optional)..................................................................................... 38
Nurse Call Control Board (Optional).............................................................................. 39
4.5 Power Connector Fuse Replacement........................................................................... 40

4.6 Scale System Calibration..............................................................................................41
Verifying Scale Accuracy..............................................................................................41
Scale Calibration..........................................................................................................41
4.7 Load Cell Verification....................................................................................................42
4.8 Load Cell Replacement.................................................................................................43
4.9 Mattress Support Section Replacement........................................................................44
Foot Section................................................................................................................44
Thigh Section...............................................................................................................45
Seat Section................................................................................................................46
Head Section...............................................................................................................47
4.10 Actuator Replacement.................................................................................................50
Thigh Actuator .............................................................................................................51
Head Actuator..............................................................................................................52
Hi-Lo Actuator..............................................................................................................53
4.11 Actuator Screw Lubrication Procedure........................................................................54
4.12 5th Steer Wheel Component Replacement.................................................................55
Activation Lever...........................................................................................................55
Swing Arm Assembly ...................................................................................................56
4.13 Caster Replacement ...................................................................................................58
4.14 Hi-Lo Lever Replacement............................................................................................60
4.15 Optional CPR Release Component Replacement.......................................................62
CPR Release Cable.....................................................................................................62
CPR Pneumatic Cylinder..............................................................................................63
Appendix A: Motor Connection Diagram..............................................................................64
Appendix B: Scale Connection Diagram ..............................................................................65
Appendix C: Nurse Call Connection Diagram.......................................................................66
Appendix D: Toroidal Transformer Connection Diagram (FL20E International Series).........67
Appendix E: Toroidal Transformer Replacement (FL20E International Series).....................68
Appendix F: Bed Positions for Maintenance Purpose...........................................................69

Introduction Chapter 1
5
1. INTRODUCTION
This manual is designed to assist you with the servicing of the Model FL20E . Read it
thoroughly before beginning any service on the bed. Qualified maintenance personnel should be
able to refer to this manual at all time when servicing the bed.
This Maintenance Manual is an integral part of the bed and should be included if the bed is sold
or transferred.
1.1 SPECIFICATIONS *
Safe Working Load 579 lb (263 kg)
Weigh System Capacity Patients weighing up to 500 lb (227 kg)
Weigh System Accuracy ± 2 % of patient weight from 100 lb (45.3 kg) to 500 lb
(227 kg)
± 2 lb of patient weight under 100 lb (45.3 kg)
Overall Length/Width 92 7/8 x 42 9/16" (235 x 108.1 cm) -siderails up
92 7/8 x 38 3/4" (235 x 98.4 cm) -siderails down
Weight w/Boards 417 lb (189 kg)
Patient Sleep Surface 35 x 80" (89 x 203 cm) extendable to 82" (208 cm) &
84" (213 cm)
Recommended Mattress 35 x 80" (89 x 203 cm); 35 x 82" (89 x 208 cm); 35 x
84" (89 x 213 cm); 6.25" (15.9 cm) max. thickness
Min/Max Mattress Support Height: 14.5 to 28.9" (36.8 to 73.4 cm)
Fowler Angle w/CPR Mechanism
Fowler Angle w/o CPR Mechanism 0 to 60° 0 to 65°
Knee Gatch Angle w/o Auto Contour
Knee Gatch Angle w/Auto Contour 0 to 32° 0 to 24°
Trendelenburg/Reverse Trendelenburg +14 to -14°
Environmental Conditions
-Transport and storage
-Ambient Temperature
-Relative humidity
-Atmospheric Pressure
-Operating **
-Ambient Temperature
-Relative humidity
-Atmospheric Pressure
-40 to 70°C (-40 to 158°F)
10 to 100%
500 to 1060 hPa
18.3 to 26.7°C (65 to 80°F)
20 to 80% without condensation
700 to 1060 hPa
Electrical Requirements -all electrical
requirements meet CSA C22.2 No. 601.1-
M90, UL 2601 and IEC 60601-1, 60601-
2-38 specifications.
100V∼, 50-60Hz, 7.5A -Two 250V, 10A Slow Blow
Fuses
120V∼, 50-60Hz, 4.0A -Two 250V, 10A Slow Blow
Fuses
120 V∼, 50-60Hz, 9.8A w/Auxiliary Outlet -Two 250V,
10A Slow Blow Fuses
200V∼, 50-60Hz, 3.2A -Two 250V, 6.3A Slow Blow
Fuses
220V∼, 50-60Hz, 2.9A -Two 250V, 6.3A Slow Blow
Fuses
240V∼, 50-60Hz, 2.7A -Two 250V, 6.3A Slow Blow
Fuses
* Stryker Bertec pays special attention to product improvement and reserves the right to change
specifications without notice.
**Operating environment recommended to ensure the scale precision.

GOBED+ Maintenance Manual
6
1.2 TECHNICAL SUPPORT
For questions regarding this product, contact the following Technical Service department or your
local representative:
In Canada: In the United States:
Stryker Bertec Medical Inc Stryker Medical
1 800 428-5025 1 800 327-0770
E-mail (Canada only): [email protected] 6300, South Sprinkle Road
70, 5th Avenue, P.O. Box 128 Kalamazoo, MI 49001-9799
L’Islet (Québec), G0R 2C0, Canada USA
1.3 WARNING, CAUTION, NOTE DEFINITION
The words WARNING, CAUTION and NOTE carry special meanings and should be carefully
reviewed.
The personal safety of the patient or user may be involved. Disregarding this information could
result in injury to the patient or user.
These instructions point out special procedures or precautions that must be followed to avoid
damaging the equipment.
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Notes provide special information to make maintenance easier or important instruction clearer.
1.4 STATIC DISCHARGE PRECAUTIONS
The electronic circuits of the bed are protected from static electricity damage only while the bed
is assembled. It is extremely important that all service personnel always use adequate static
protection when servicing the electronic components of the bed.
Static Protection Equipment
The necessary equipment for a proper static protection is:
•1 static wrist strap
•1 grounding plug
•1 test lead with a banana plug on one end and an alligator clip on the other.
Static Protection Procedure 1. Unplug the bed power cord from the
wall receptacle.
2. Insert the grounding plug into a
properly grounded hospital grade wall
receptacle. Plug the banana plug of
the test lead into the receptacle on
the grounding plug. Connect the
alligator clip on the other end of the test lead to a ground point on the bed.
3. Place the static control wrist strap on your wrist. Connect the clip at the other end of the
wrist strap cord to a ground point on the bed.
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GROUNDING DIAGRAM
BED

Introduction Chapter 1
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QE71-0552-T
1.5 WARRANTY
LIMITED WARRANTY
All Stryker Bertec products are guaranteed against material or manufacturing defects, improper
operation of mechanisms, and premature wear of bed components under normal use
conditions.
For questions regarding warranty, please contact Stryker Bertec Technical Service department
(see section 1.2) or your local representative.
TO OBTAIN SERVICE AND/OR PARTS
•To Require Service
For an on-site diagnosis of a malfunction by one of our Filed Service Representative, contact
our Technical Service department (see section 1.2) or your local representative.
•To Order Parts
In order to correctly identify and order parts to be replaced, proceed as follow:
•Locate the serial number plate and the manufacturer's nameplate affixed respectively to the
right side of the mobile frame at the foot end of the bed, and to the right side of the head end
casing cover.
•From the serial plate, write down the serial number (A).
•From the manufacturer's nameplate, write down the bed model (B), the production number
(C), ex. FL20-XXXX, and the Customer's Guide number (D).
•Consult the parts lists and the drawings contained in the Parts List Manual included in the
Customer's Guide to identify the defective part. Write down the name of the part and its part
number, and the problem encountered while using the equipment.
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It is very important that you refer to the parts lists and drawings of the Parts List manual specific
to the bed needing repair.
•Contact our Technical Service department (see section1.2) or your local representative and
provide all the previously noted information.
•Bed model
•Serial number and production number
•Name and part number of the defective parts
•Problem encountered
A
SERIAL NUMBER PLATE
C
D
B
MANUFACTURER
'
S
NAMEPLATE

GOBED+ Maintenance Manual
8
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We will do our best to help you identify the parts to be replaced. However, if an error occurs
when ordering, the user remains responsible for identifying the parts to change.
Stryker Bertec will take back wrong parts ordered but will not assume shipping charges, and
restocking fees will be charged to the user unless a Technical Service Representative has been
requested for an on-site diagnosis of the malfunction.
RETURN AUTHORIZATION
Merchandise cannot be returned without approval from the Stryker Bertec Technical Service
department. An authorization number will be provided, which must be clearly printed on the
returned merchandise. Stryker Bertec reserves the right to charge shipping and restocking fees
on returned items.
DAMAGED MERCHANDISE
Claims for damaged merchandise must be made with the carrier within fifteen (15) days of
receipt of merchandise. DO NOT ACCEPT DAMAGED SHIPMENTS UNLESS SUCH DAMAGE
IS NOTED ON THE DELIVERY RECEIPT AT THE TIME OF RECEIPT. Upon prompt
notification, Stryker Bertec will file a freight claim with the appropriate carrier for damages
incurred. Claims will be limited in amount to the actual replacement cost. In the event that this
information is not received by Stryker Bertec within the fifteen (15) day period following the
delivery of the merchandise, or the damage was not noted on the delivery notice at the time of
receipt, the customer will be responsible for payment of the original invoice in full.
Claims for any short shipment must be made within 5 days of invoice.
1.6 SYMBOLS
IPX4 Protection from liquid splash
Type B Equipment
∼
Alternating Current
Warning, consult accompanying documents
10A 125V Fuse rating for bed with the 100V∼and 120V∼
electric
systems
6.3A 250V Fuse rating for beds with 200V
∼
, 220V
∼
and 240V
∼
electric systems
Protective earth (ground)

PreventativeMaintenance Chapter 2
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2. PREVENTATIVE MAINTENANCE
2.1 BED CLEANING AND MATTRESS CARE
Always unplug the bed power cord from the wall outlet when cleaning or servicing the bed.
Do not use harsh cleaners, solvents or detergents. Equipment damage could occur. Do not
steam clean, hose off or ultrasonically clean the bed. Do not immerse any part of the bed. The
bed electrical parts may be damaged by exposure to water.
Germicidal disinfectant, used as directed, and/or Chlorine Bleach products are not considered
mild detergents. These products are corrosive in nature and may cause damage to your bed if
used improperly. If these types of products are used, ensure the beds are wiped with clean
water and thoroughly dried following cleaning. Failure to properly rinse and dry the beds will
leave a corrosive residue on the surface of the bed, possibly causing premature corrosion of
critical components. Failure to follow the above directions when using these types of cleaners
may void this product warranty.
CLEANING BEDS
Hand wash all surfaces of the bed with a soft cloth moistened with a solution of lukewarm water
and a mild detergent.
Wipe the bed clean and dry thoroughly to avoid build up of cleaning solution.
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Do not use cleaning solutions containing a degreaser near the siderail pivots (see figure 2.2B on
page 11) to avoid deteriorating the grease used to ensure a smooth movement of the siderails.
MATTRESS CARE
Inspect the mattress after each use. Discontinue use if any cracks or rips are found in the
mattress cover that may allow fluid to enter the mattress. Failure to properly clean the mattress,
or dispose of it if defective, may increase the risk of exposure to pathogenic substances and
may bring about diseases to the patient and/or user.
•Inspection
Implement local policies to address regular care, maintenance, and cleaning of mattresses and
covers. The cover cleaning procedure can be found below and on the bed label.
Inspect mattress cover surface (also zip fasteners and cover inner surface if mattresses have
zip fasteners) regularly for signs of damage. If the mattress cover is heavily stained or soiled, or
is torn, remove the mattress from service.
•Cleaning
Stains: Wash with lukewarm water using a mild detergent. Rinse with water and let dry. For
tough stains use bleach diluted with ten parts of water.
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2.2 LUBRICATION REQUIREMENTS
Listed below are the lubrication points and their recommended time interval check. When
needed, lubricate these points with OG2 grease (P/N M0027).
The use of type of grease other than the one recommended (OG2 grease) could lead to
deterioration of critical parts and to mechanism failure, resulting in injury to the patient and/or
user and damage to the bed.
The uses oil-impregnated shoulder spacers at hinge points. Do not lubricate these
shoulder spacers. When shoulder spacers are found worn, replace them.
ANNUAL CHECKLIST:
____ The Hi-Lo lever nylon sliders and their shaft (see fig. 2.2A, page 11). Check that grease is
still present along the course of the sliders (inner bottom and side surfaces of the rail).
____ The lower mounting points (see fig. 2.2A, page 11) of the Hi-Lo system stabilizer.
____ The siderail plungers and plunger springs (see fig. 2.2B, page 11).
____ The siderail arm glide rods (see fig. 2.2B, page 11).
TWO YEAR INTERVAL CHECKLIST:
____ The two Hi-Lo and the head section actuator tubes (see fig. 2.2C, page 11) to facilitate
their sliding into their support tubes. Raise the bed and the head section fully up and apply
grease on the actuator tubes.
____ The four actuator screws (see fig. 2.2C, page 11). Refer to section 4.11.
____ The clevis pins and nylon washers linking the four actuator tubes to their anchor points:
the head and thigh section lever arms and the two Hi-Lo lever arms (see fig. 2.2C, page
11).
____ The four actuator bolts holding them to their brackets as well as the inner sides of the
brackets, including the pivot pin (see fig. 2.2C, page 11).
____ The micro switch activator (see fig. 2.2E, page 11) of the Auto Contour positioning
mechanism.
FIVE YEAR INTERVAL CHECKLIST:
____ The siderail shafts and transfer plate sleeves (see fig. 2.2B, page 11).
____ The inside of the Hi-Lo lever molded bearings (see fig. 2.2A, page 11).
____ The damper spacer sleeves and the fixed and mobile levers (see fig. 2.2D, page 11) from
the CPR positioning mechanism.
Serial Number:_______________ _______________ _______________
_______________ _______________ _______________
_______________ _______________ _______________
_______________ _______________ _______________
Completed by:______________________________ Date:_________________
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PreventativeMaintenance Chapter 2
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LUBRICATION POINTS ILLUSTRATED
2 YEARS1 YEAR
LEGEND:
5 YEARS
XXXXX
XXXXXX
Comm.:XXXX Reçu : XX-XX-XX
Comm.:XXXX Reçu : XX-XX-XX
XXXXXX
XXXXX
Figure 2.2B
Figure 2.2A
Figure 2.2D
Figure 2.2E
Figure 2.2C
Figure 2.2

GOBED+ Maintenance Manual
12
2.3 PREVENTATIVE MAINTENANCE PROGRAM
When servicing use only identical replacement parts provided by Stryker Bertec.
ANNUAL CHECKLIST
____ All fasteners secure.
____ Inspect for excessive wear the oil-impregnated bronze shoulder spacers found at the bed
hinge points. Replace as needed. Do not lubricate these spacers.
____ Engage the “TOTAL BRAKE” pedal at both sides of the bed and ensure the brakes are
applied. Toggle the pedal to neutral and ensure the brakes are removed.
____ Engage the “Axial Steer” pedal at both side of the bed and ensure the 5th steer wheel
engages properly. Toggle the pedal to neutral and ensure the 5th wheel disengages.
____ Siderails move, lock in high position and stow properly.
____ All functions on the foot board working properly (including LED's).
____ All siderail functions working properly. Verify the nurse call function, alarm sounds in the
nurse station?
____ Calibrate the optional scale system (see section 4.6). If the weight reading following the
calibration is not correct, check the four load cells (see section 4.7).
____ Optional CPR hold-to-run release handles working properly. Fowler and Knee Gatch (if
raised) flatten. Fowler control motor resets itself automatically as soon as the fowler is
completely lowered.
____ Verify the Fowler and Knee Gatch movements to ensure that their motor course is
properly adjusted. Refer to Caution following step 10 of the Thigh and Head Actuator
Replacement procedures, page 51 and 52.
____ 120V auxiliary outlet (optional only with 120V electric system beds) working properly.
____ Optional photoelectric night light working properly.
____ Automatic foot prop rod working properly with the Knee Gatch or Auto Contour activated.
____ No cracks or splits in the boards and siderails.
____ Head end bumpers tightly secured to frame and working properly.
____ No rips or cracks in mattress cover.
____ Power cord not frayed, no cables worn or pinched, all electrical connections tight, all
grounds secure to the frame.
____ All casters roll properly. Check caster tire for cuts, wear, etc.
____ Ground chain intact and in place.
____ Inspect and lubricate, if needed, the bed lubrication points described in section 2.2 of the
maintenance manual.
____ Measure current leakage and grounding continuity of the bed and the optional auxiliary
outlet (check with our Technical Service department for the acceptable values).
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Preventative maintenance may need to be performed more frequently based on the usage level
of the bed.
Serial Number: _______________ _______________ _______________
_______________ _______________ _______________
_______________ _______________ _______________
Completed By:___________________________________ Date:_______________
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PreventativeMaintenance Chapter 2
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RECOMMENDED SPARE PARTS
The following is a list of recommended on hand spare parts for the .
Part Number Parts Lists
ELECTRONIC/ELECTRICAL ASSEMBLY PARTS
S. A. Motor control board 80-4029 OL200016
Optional scale control board, English language QDF20-0117 OL200016
Optional display control board QDF20-0119 OP200031/35
Optional Nurse call control board QDF20-0126 OL200010
Optional GEN lll control board QDF20-0121 OL200011
Load cell (short cable) QDF20-0013 L20-001
Load cell (long cable) QDF20-0014 L20-001
Control board stand off pins QDF8011 OL200016
Strain relief bushing QPNC0604 OL200016
Removable power cord 120V QDF8066 OL200014
S. A. Power connector 80-4020 OL200016-20
10 Amp fuse QDF8067 OL200016-20
Micro switch 1325P003 L20-005
OL200001
Optional night light QDF9539 OL200002
Optional auxiliary double socket outlet QDF8024 OL170014
Toroidal transformer (International series) QDF14-1160 OL200017-20
S. A. Hi-Lo actuator 80-0039 OL200016
S. A. Knee Gatch actuator 80-0041 OL200016
S. A. Head actuator 17-0041 OL200016
CONTROL PANEL ASSEMBLY PARTS
Foot Board Control Membrane
Scale / mounting plate QDF20-0035/
QP20-0043-07 OP200031
Bed Exit / mounting plate QDF20-0035/
QP20-0043-07 OP200032
Bed Exit w/zone ctrl / mounting plate QDF20-0045/
QP20-0043-07 OP200034
Scale and Bed Exit w/zone ctrl / mounting plate QDF20-0044/
QP20-0043-07 OP200035
Siderail Control Membrane w/o Nurse Call (not backlighted)
S. A. Left rail membrane 80-4025 OL200074
S. A. Right rail membrane 80-4026 OL200074
Siderail Control Membrane w/Nurse Call (not backlighted)
S. A. Left rail membrane 80-4027 OL200075
S. A. Right rail membrane 80-4028 OL200075
Backlit Siderail Control Membrane w/o Nurse Call
S. A. Left rail membrane 80-4021 OL200008
S. A. Right rail membrane 80-4022 OL200008

GOBED+ Maintenance Manual
14
Backlit Siderail Control Membrane w/Nurse Call
S. A. Left rail membrane 80-4023 OL200075
S. A. Right rail membrane 80-4024 OL200075
SIDERAIL ASSEMBLY PARTS
Space Reducer QP20-0036-07 OL200068
S. A. Right release lever 90-1114 OL200067-68
S. A. Left release lever 90-1113 OL200067-68
Shaft plug QP17-0364-07 OL200067-68
Protective cap QP18748-07 OL200067-68
MATTRESS SUPPORT ASSEMBLY
Mattress retainer QPN-14034-2L20-003
CPR release cables: normal and short QDF19-0354/QDF19-0815 OL200001
CPR pneumatic cylinder QDF5090 OL200001
BASE ASSEMBLY PARTS
Caster with locking system RT61C L17-013
Caster without locking system T61CSW L17-013
Steer wheel caster RL5 L17-005
S. A. Right brake/steer pedal 80-3078 L17-014
S. A. Left brake/steer pedal 80-3079 L17-014
MISCELLANEOUS
OG-2 grease M0027
Thread locker -medium strength (blue) M008
Sand gray aerosol spray paintDDCAP-GSP
Shoulder spacer QDF17-0020 L20-003
Rue ring cotter QDF7878 OL200016-20
Elastomer sleeves QP20-0037-00 L20-001

Troubleshooting Chapter 3
15
3. TROUBLESHOOTING
Please consult the following troubleshooting checklist before calling the Technical Service
department (see section 1.2).
3.1 TROUBLESHOOTING GUIDE
Definition:
DMM = Digital Multi-Meter
PROBLEM/FAILURE
WHAT TO CHECK
No power to bed
A. Is the bed power switch turned on?
B.Is the power cord connected to the power
connector and plugged into the wall outlet?
C. Is the power cord severed? Replace if
needed.
D. Are the two fuses inside the power
connector still operational (see section 4.5)
E. Verify power at wall outlet.
F. Is DS1 on motor control board 20-0180
flashing? If not, replace the board.
G. Check for 120Vac at J6 and J7 on motor
control board 20-0180 (see page 19).
H. Verify 5 Vdcand 12 Vdc at U7 on motor
control board 20-0180 (see page 19).
No bed up or down motion when:
-the foot board command is used
-the siderail command is used
A. Is the Hi-Lo lockout control activated in the
foot board control panel? Deactivate it.
B. Is the cable of the siderail control panel
properly connected to the bed receptacle
under the mattress support?
C. Check points A to E of the “No power to
bed” problem/failure above.
D. Check voltage at the motor control
connector mounted on the bed frame (see
page 25).
E. Run the conductivity test at the motor
control connector mounted on the foot
board (see page 24).
F. Check voltage at the bed receptacle for the
siderail cable plug (see page 23).
G. Run the conductivity test on the siderail
cable plug (see page 22).
H. Check points F to H of the “No power to
bed” problem/failure above.
I. Check voltage test points at J10 and J11
on motor control board 20-0180 (see page
19).

GOBED+Maintenance Manual
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No Fowler up or down motion when:
-the foot board command is used
-the siderail command is used
A. Is the Fowler lockout control activated in
the foot board control panel? Deactivate it.
B. Is the cable of the siderail control panel
properly connected to the bed connector
under the mattress support?
C. Check points A to E of the “No power to
bed” problem/failure (see page 15).
D. Check voltage at the motor control
connector mounted on the bed frame (see
page 25).
E. Run the conductivity test at the motor
control connector mounted on the foot
board (see page 24).
F. Check voltage at the bed receptacle for the
siderail cable plug (see page 23).
G. Run the conductivity test on the siderail
cable plug (see page 22).
H. Check points F to H of the “No power to
bed” problem/failure (see page 15).
I. Check voltage test points at J8 on motor
control board 20-0180 (see page 19).
No Knee Gatch up or down motion when:
-the foot board command is used
-the siderail command is used
A. Is the Knee Gatch lockout control activated
in the foot board control panel? Deactivate
it.
B. Is the cable of the siderail control panel
properly connected to the bed connector
under the mattress support?
C. Check points A to E of the “No power to
bed” problem/failure (see page 15).
D. Check voltage at the motor control
connector mounted on the bed frame (see
page 25).
E. Run the conductivity test at the motor
control connector mounted on the foot
board (see page 24).
F. Check voltage at the bed receptacle for the
siderail cable plug (see page 23).
G. Run the conductivity test on the siderail
cable plug (see page 22).
H. Check points F to H of the “No power to
bed” problem/failure (see page 15).
I. Check voltage test points at J9 on motor
control board 20-0180 (see page 19).
No Auto Contour motion
A. Is Auto Contour activated (LED off) on the
foot board?
B. Check points A to E of the “No power to
bed” problem/failure (see page 15).
C. Check the two Auto Contour limit switches.

Troubleshooting Chapter 3
17
D. Check voltage at the motor control
connector mounted on the bed frame (see
page 25)
E. Run the conductivity test at the motor
control connector mounted on the foot
board (see page 24)
F. Check points F to H of the “No power to
bed” problem/failure (see page 15).
Improper operation of the CPR positioning:
Knee Gatch does not lower and/or the Fowler
actuator does not reset.
A. Check the two CPR limit switches.
The weight shown on the scale system
display is incorrect. A. Zero the bed without the patient in it (see
section 2.16 of the Operations Manual).
B. Calibrate the bed (see page 41).
Display reads OVERLOAD or shows incorrect
weight. A. One or more load cell cables not properly connected or completely disconnected from
the scale control board (see figure 4.4A,
page 38 for the connecting positions of the
load cell cable).
B. Run the load cell verification mode to
detect a possible load cell failure (see page
42).
Angle shown on the scale system display is
incorrect
A. Calibrate the bed (see page 41).
Scale display does not turn on when the scale
system is activated.
A. Press ENTER key twice.
B. Turn the main power switch off and turn it
on.
C. Lift the foot board and gently replace it into
position taking care to completely push it
down so that the connectors match
correctly.
D. Check points A to E of the “No power to
bed” problem/failure (see page 15).
E. Check voltage at the scale control
connector mounted on the bed frame (see
page 25).
F. Run the conductivity test at the scale
control connector mounted on the foot
board (see page 24).
G. Check points F to H of the “No power to
bed” problem/failure (see page 15).
H. Is DS1 on scale control board 20-0117 or
20-0221 flashing? If not, replace the board.
I. Check for 120 Vac at J4 on scale control
board 20-0117 or 20-0221 (see page 20).
J. Verify 5 Vdc and 12 Vdc at U9 on scale
control board 20-0117 or 20-0221 (see
page 20).

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K. Scale user interface cable not properly
connected or completely disconnected from
the scale control board (see figure 4.4A,
page 38 for the illustration of the cable
connecting position).
L. Check 5Vdc at J2 of the scale display
interface board 20-0119 (see page 21).
Bed Exit system does not operate properly. A. Verify that the load cell cables are properly
connected to the scale control board (see
figure 4.4A, page 38) for the illustration of
the load cell cable connecting positions).
Bed Exit system does not work at all or alarm
goes off when Bed Exit is activated. A. Check points A to E of the “No power to
bed” problem/failure (see page 15).
B. Check voltage at the scale control
connector mounted on the bed frame (see
page 25)
C. Run the conductivity test at the scale
control connector mounted on the foot
board (see page 24)
D. Check points F to H of the “No power to
bed” problem/failure (see page 15).
E. One or more load cell cables are not
properly connected or are completely
disconnected from the scale control board
(see figure 4.4A, page 38 for the load cell
cable connecting positions).
F. Is DS1 on scale control board 20-0117 or
20-0221 flashing? If not, replace the board.
G. Verify 5 Vdc and 12 Vdc at U9 on scale
control board 20-0117 or 20-0221 (see
page 20).
H. Check for 120 Vac at J4 on scale control
board 20-0117 or 20-0221 (see page 20).
I. Run the load cell verification mode to
detect a possible load cell failure (see page
42).
Nurse call or Bed Exit signal does not reach
the nurse desk. A. Check connection to nurse call wall outlet using the nurse call board (20-0121or 20-
0126) 37 pin connector and the bed
communication tester (see instructions on
page 26).

Troubleshooting Chapter 3
19
20-0180 -Motor Control Board
Connector
Location Voltage Positive Lead Negative Lead Description
J6 120 Vac Pin 1 Pin 2
J7 120 Vac Pin 1 Pin 2
U7 12 Vdc Pin 1 Heat Sink
U7 5 Vdc Pin 3 Heat Sink
5 Vdc J5 pin 17 J2 pin 1J2 and J5 2 to 5 Vdc J5 pin 1 J2 pin 1
J2 and J4 2 to 5 Vdc J4 pin 8 J2 pin 1
0 Vac w/o Head Up Command Pin 4 Pin 3J8 120 Vac w/Head Up Pin 4 Pin 3 Head Up
0 Vac w/o Head Down
Command Pin 2 Pin 3J8
120 Vac w/Head Down Pin 2 Pin 3
Head Down
0 Vac w/o Knee Gatch Up
Command Pin 2 Pin 3J9
120 Vac w/ Knee Gatch Up Pin 2 Pin 3
Knee Gatch Up
0 Vac w/o Knee Gatch Down
Command Pin 4 Pin 3J9
120 Vac w/ Knee Gatch Down Pin 4 Pin 3
Knee Gatch Down
0 Vac w/o Hi-Lo Up Command Pin 4 Pin 3J10 and
J11 120 Vac w/Hi-Lo Up Pin 4 Pin 3 Hi-Lo Up
0 Vac w/o Hi-Lo Down
Command Pin 2 Pin 3J10 and J11 120 Vac with Hi-Lo Down Pin 2 Pin 3
Hi-Lo Down
N
NO OT TE E:
Be careful not to damage connector when probing in.
U7 pins may be difficult to check. Scratch the coating with the DMM probe.
J2 J4 J5 J7 J6 J8 J9 J10 J11
U7

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20
20-0117 or 20-0221 -Scale Control Board
Connector
Location Voltage Positive Lead Negative Lead Description
U9 12 Vdc Pin 1 Heat Sink
U9 5 Vdc Pin 3 Heat Sink
J4 120 Vac Pin 1 Pin 2
J1 0 ohm Pin 2 Pin 1 Bed Exit OFF
J1 Inf ohm Pin 2 Pin 3 Bed Exit OFF
J1 Inf ohm Pin 2 Pin 1 Bed Exit ON
J1 0 ohm Pin 2 Pin 3 Bed Exit ON
N
NO OT TE E
Disconnect docker cable.
Disconnect pendant control.
U9 pins may be difficult to check. Scratch the coating with the DMM probe.
J1 U9 J4