Ohio 7100 Service manual

Schaerer Mayfield USA, Inc.

Go To Table Of Contents

7100

General Surgery

Table

Service and

Parts Manual

SF-1471 Part No. 503-0269-00 Rev. M (5/04)

FOR USE BY

SCHAERER MAYFIELD USA TRAINED TECHNICIANS ONLY

Go To Table Of Contents

TABLE OF CONTENTS

Section/Paragraph Page Section/Paragraph Page

IMPORTANT INSTRUCTIONS

General Safety Instructions........................................ iv

Warnings.................................................................... iv

Warranty Instructions ................................................. iv

SECTION I GENERAL INFORMATION

1.1 Scope of Manual......................................... 1-1

1.2 How to Use Manual..................................... 1-1

1.3 Description of 7100 General Surgery

Table ....................................................... 1-1

1.4 Specifications ............................................. 1-8

1.5 Parts Replacement Ordering ....................... 1-9

1.6 Special Tools .............................................. 1-9

SECTION II TESTING AND TROUBLESHOOTING

2.1 Operational Test.......................................... 2-1

2.2 Troubleshooting Procedures........................ 2-5

SECTION III SCHEDULED MAINTENANCE

3.1 Scheduled Maintenance .............................. 3-1

SECTION IV MAINTENANCE/SERVICE INSTRUCTIONS

4.1 Introduction ................................................. 4-1

4.2 Checking Oil Level / Adding Oil To

Reservoir .................................................. 4- 1

4.3 Calibration Of Return To Level / Neutral

Position .................................................... 4- 2

4.4 Hand Control Button Board Removal /

Installation ................................................ 4- 3

4.5 Hand Control Board Removal /

Installation ................................................ 4- 4

4.6 Leg Cylinders Synchronization Procedure .... 4-5

4.7 Seat Cylinders Synchronization

Procedure ................................................. 4- 7

4.8 Column Cylinder Slave Line Volume

Adjustment ............................................... 4- 9

4.9 Trendelenburg Cylinder Removal /

Installation .............................................. 4-10

4.10 Trendelenburg Pilot Operated Check

Valve Removal / Installation ................... 4-12

4.11 Trendelenburg Cylinder Orifice(s) Removal / Installation (Old Style

Cylinder .................................................. 4-15

4.11.1 Trendelenburg Cylinder Orifice(s) Removal / Installation (New Style

Cylinder .................................................. 4-15

4.12 Trendelenburg Position Sensor

Removal / Installation ............................. 4-16

4.13 Lateral Tilt Cylinder Removal /

Installation .............................................. 4-17

4.14 Lateral Tilt Orifice(s) Removal /

Installation .............................................. 4-19

4.15 Lateral Tilt Pilot Operated Check

Valves Removal / Installation.................. 4-20

4.16 Lateral Tilt Position Sensor Removal /

Installation .............................................. 4-22

4.17 Leg Cylinder Removal / Installation ............ 4-23

4.18 Leg Cylinder Orifice(s) Removal /

Installation .............................................. 4-28

4.19 Leg Cylinder Pilot Operated Check

Valve Removal / Installation ................... 4-30

4.20 Leg Position Sensor Removal /

Installation .............................................. 4-32

4.21 Seat Cylinder Removal / Installation........... 4-35

4.22 Seat Cylinder Orifice(s) Removal /

Installation .............................................. 4-39

4.23 Seat Cylinder Pilot Operated Check

Valve Removal / Installation ................... 4-41

4.24 Seat Position Sensor Removal /

Installation .............................................. 4-42

4.25 Column Cylinder Removal /

Installation .............................................. 4-44

4.26 Column Pilot Operated Check Valve

Removal / Installation ............................. 4-48

4.27 Typical L.H. and R.H. Control Valve

Solenoids Removal / Installation ............. 4-49

4.28 Typical Base Mounted Control Valve

Solenoids Removal / Installation ............. 4-50

4.29 Discharge Filter Replacement .................... 4-52

4.30 Supply Line Check Valve Removal /

Installation .............................................. 4-53

4.31 Main Floor Lock or Outrigger Floor

Lock Cylinder Removal / Installation ....... 4-55

4.32 Motor Or Motor Pump Removal /

Installation .............................................. 4-56

4.33 Pump Unit Removal / Installation ............... 4-60

4.34 Motor Pump Output Check Valve

Removal / Installation ............................. 4-61

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

TABLE OF CONTENTS - CONTINUED

Return To Table Of Contents

Section/Paragraph Page Section/Paragraph Page

4.35 Motor Pump Pressure Relief Valve

Removal / Installation ............................. 4-62

4.36 Outrigger Pressure Relief Valve

Removal / Installation ............................. 4-65

4.37 Main Controller Board Removal /

Installation .............................................. 4-67

4.38 Charging / Power Driver Board

Removal / Installation ............................. 4-69

4.39 Emergency Override Panel Removal /

Installation .............................................. 4-71

4.40 Distribution Board Removal /

Installation .............................................. 4-72

4.41 RFI Filter Removal / Installation ................. 4-73

4.42 Transformer Removal / Installation............. 4-74

4.43 Line Power Pilot Lamp Removal /

Installation .............................................. 4-76

4.44 Plug Receptacle Removal /

Installation .............................................. 4-77

4.45 Batteries Removal / Installation.................. 4-77

4.46 Primary Thermostat Removal /

Installation .............................................. 4-78

4.47 Secondary Thermostat Removal /

Installation .............................................. 4-79

4.48 Floor Lock Status Switch Removal /

Installation .............................................. 4-79

4.49 Table Orientation Switches Removal /

Installation .............................................. 4-81

4.50 Head Section Gas Spring Removal /

Installation / Adjustment ......................... 4-83

4.51 Foot Control Interface Board Removal /

Installation .............................................. 4-84

4.52 Typical Latch Mechanism Removal /

Installation .............................................. 4-85

4.53 Typical Floor Lock Check Valve

Removal / Installation ............................. 4-87

SECTION V SCHEMATICS AND DIAGRAMS

5.1 Electrical Schematics / Wiring Diagrams..... 5-1

5.2 Hydraulic Flow Diagram................................ 5- 5

5.3 Hand Control Messages ............................... 5- 7

5.4 Error Code Chart .......................................... 5- 8

SECTION VI PARTS LIST

6.1 Introduction ................................................. 6-1

6.2 Description of Columns ............................... 6-1

6.3 Torque Specifications And Important

Assembly Notes ....................................... 6-1

Pictorial Index ............................................. 6-2

Accessories ................................................. 6- 3

Labels And Decals ....................................... 6-4

Cushions and Table Tops............................. 6- 5

Covers and Shields ...................................... 6-6

Head Section Assembly............................... 6 - 7

Bridge Components.................................... 6-8.*

Lateral Tilt Cylinder Assembly....................6-9.*

Upper Hose Connections............................ 6-10

L.H. Side Components ............................... 6-11

L.H. Control Valve Assembly ..................... 6-12

L.H. Seat Cylinder Assembly ..................... 6-13

R.H. Side Components............................... 6-14

Emergency Override Panel Assembly ........ 6-15

R.H. Control Valve Assembly..................... 6-16

R.H. Seat Cylinder Assembly..................... 6-17

Column Assembly Components ...............6-18.*

Column Assembly ...................................... 6-19

Trendelenburg Cylinder Assembly ........... 6-20.*

Column Cylinder Assembly ........................ 6-21

Seat Components ...................................... 6-22

L.H Leg Cylinder Assembly ........................ 6-23

R.H. Leg Cylinder Assembly ...................... 6-24

Leg Pivot Mechanism Assembly ................ 6-25

Leg Section Assembly ............................... 6-26

Hand Control Assembly.............................. 6-27

Base Cover Components ........................... 6-28

Base Hydraulic / Electrical

Components............................................ 6-29

Electrical Control Box Components ............ 6-30

Base Hydraulic Plumbing ........................... 6-31

Base Control Valve Assembly.................... 6-32

Hydraulic Pump / Motor Components ......... 6-33

Hydraulic Motor Components ...................6-34.*

Hydraulic Pump Components ...................6-35.*

Floor Lock Components ............................. 6-36

Main Floor Lock Cylinder Components ..... 6-37 *

Outrigger Floor Lock Cylinder

Components............................................ 6-38

Caster Components ................................. 6-39.*

Power Driver Board Components................ 6-40

Battery Components .................................. 6-41

529-0788-00 Mode Reversing Pin............... 6-42

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

Page iiPrinted in U.S.A.

TABLE OF CONTENTS - CONTINUED

Return To Table Of Contents

Section/Paragraph PageSection/Paragraph Page

13100 / 13200 Montreal Lateral

Position Device....................................... 6-43

70542 Bierhoff Leg Holder .......................... 6-44

71070 Siderail Socket ................................ 6-45

71071 I.V. Arm Board Assembly ................ 6-46

71072 / 71084 / 71085 / 71093

I.V. Arm Board Cushion .......................... 6-47

71073 Siderail Clamp ................................. 6-48

71074 Conventional Ether Screen .............. 6-49

71075 Foot Rest......................................... 6-50

71076 Procto Positioner ............................. 6-51

71077 Siderail Extender Set ....................... 6-52

71078 A/P Cassette Holder ........................ 6-53

71079 Lithotomy Leg Holder ....................... 6-54

71080 Universal Ether Screen .................... 6-55

71082 Lateral Cassette Holder ................... 6-56

71083 Cross Arm Support .......................... 6-57

71086 Decubitus Pad ................................. 6-58

71087 Drain Tray........................................ 6-59

Mount Frame Assembly ............................. 6-60

Tray Frame Assembly................................ 6-61

71088 Neuro Headrest Adapter................. 6-62.*

71089 Shoulder Arthroscopic

Attachment ............................................. 6-63

Shoulder Arthroscopic Lumbar

Support Assembly ................................ 6-64.*

Shoulder Arthroscopic Head Rest............... 6-65

71090 Lateral Support Set.......................... 6-66

71091 Kidney Elevator ............................... 6-67

71092 Infant Arm & Hand Table ................. 6-68

71094 Table Side Extenders ...................... 6-69

71096 Work Tray........................................ 6-70

71097 Tri Clamp 2 ...................................... 6-71

71098 Flexguard Stirrup Set ....................... 6-72

71099 Guardian Stirrup Set ........................ 6-73

71100 Leg Prep Stand................................ 6-74

71101 Snaplock Arm Board........................ 6-75

71102 / 71103 Snaplock Arm

Board Cushion ........................................ 6-76

71104 Shoulder Brace Set.......................... 6-77

71105 Universal Patient Brace /

71113 Circular Head Cushion ..................... 6-78

71106 / 71107 Uro Catch Bags................... 6-79

71108 Winged Anesthesia Screen.............. 6-80

71109 X-Ray Top ....................................... 6-81

71110 Footswitch ..................................... 6-82.*

71111 Split Leg Set - 71118 / 71119 Split

Leg Pad Set............................................ 6-83

71112 Foot Extension Assembly /

71114 Foot Extension Cushion................... 6-84

71115 Cloward Saddle................................ 6-85

71116 Conductive Safety Strap /

20715 Nonconductive Safety Strap ............ 6-86

71117 Standard Pad Set ............................ 6-87

71120 Side Extender Shelf......................... 6-88

71121 Uro Drain Tray ............................... 6-89.*

71122 Extreme Reverse Trendelenberg

Attachment ............................................. 6-90

E. R. T. Attachment ................................... 6-91

529-0624-00 Foot Rest Assembly .............. 6-92

71123 X-Ray Top ....................................... 6-93

71124 Leg Transfer Frame ......................... 6-94

71125 Image Amplification Extension ....... 6-95

71126 Shoulder Artroscopic Attachment ... 6-96 Shoulder Arthroscopic Lumbar

Support Assembly .................................. 6-97

Shoulder Arthroscopic Head Rest............... 6-98

71129 X-Ray Arm Board............................. 6-99

71130 IA Board (36-inch).......................... 6-100

73020 Leg Transfer Frame ....................... 6-101

73021 Yellofin Leg Holder System.... Not Shown

73022 Clear Vision Drapes ............... Not Shown

COMMENTS ............................................................ 7-1

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

Page iiiPrinted in U.S.A.© Schaerer Mayfield USA, Inc. 2004

IMPORTANT INSTRUCTIONS

Return To Table Of Contents

General Safety Instructions

Safety First: The primary concern of Schaerer Mayfield USA is that this surgery table is

maintained with the safety of the patient and staff in mind. To assure that services and repairs are completed safely and correctly, proceed as follows:

(1)Read this entire manual before performing any

services or repairs on this surgery table.

(2 ) Be sure you understand the instructions con-

tained in this manual before attempting to service or repair this surgery table.

Warnings

Throughout this manual are Note, Caution, and Danger paragraphs that call attention to particular procedures. These items are used as follows:

NOTE

A note is used to amplify an operating procedure, practice or condition.

Warranty Instructions

Refer to the SMI “Limited Warranty” printed on the back cover of the Installation and Operation Manual for warranty information. Failure to follow the guidelines listed below will void the warranty and / or render the 7100 General Surgery Table unsafe for operation.

• In the event of a malfunction, do not attempt to operate the surgery table until necessary repairs have been made.

• Do not attempt to disassemble surgery table, replace malfunctioning or damaged components, or perform adjustments unless you are one of SMI’s authorized service technicians.

• Do not substitute parts of another manufacturer when replacing inoperative or damaged components. Use only SMI replacement parts.

CAUTION

not correctly followed, could result in equipment damage.

A CAUTION is used for an operating procedure, practice, or condition which, if

DANGER

which, if not correctly followed, could result in loss of life or serious personal injury.

A DANGER is used for an operating procedure, practice, or condition

Page ivPrinted in U.S.A.

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

SECTION I

GENERAL INFORMATION

1.1 Scope of Manual

This manual contains detailed troubleshooting, scheduled maintenance, maintenance, and service instructions for 7100 General Surgery Table. This manual is intended to be used by SMI’s authorized service technicians.

1.2 How to Use Manual

A. Manual Use When Performing Scheduled Mainte-

nance. (1) Perform inspections and services listed in

Scheduled Maintenance Chart (Refer to para 3.1).

(2) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

B. Manual Use When Unit Is Malfunctioning And

Cause Is Unknown. (1) Perform an operational test on unit (Refer to

para 2.1).

(2) Perform troubleshooting procedures listed in

Troubleshooting Guide (Refer to para 2.2).

(3) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

C. Manual Use When Damaged Component Is Known.

(1) Replace or adjust component in accordance

with maintenance/service instructions (Refer to para 4.1).

procedure can be accomplished. The 7100 was designed for maximum C-arm access and X-ray visibility.

The major serviceable components of the surgery table are the motor pump which includes two motors, two pump units, two motor pump pressure relief valves, two primary thermostats, two secondary thermostats, and a motor pump output check valve, a discharge filter, supply line check valve, Trendelenburg (UP and DOWN) solenoid valves, Trendelenburg cylinder pilot operated check valves, Trendelenburg cylinder, seat (UP and DOWN) solenoid valves, seat cylinder pilot operated check valves, seat cylinders, leg (UP and DOWN) solenoid valves, leg cylinder pilot operated check valves, leg cylinders, lateral tilt (LEFT and RIGHT) solenoid valves, lateral tilt cylinder pilot operated check valves, lateral tilt cylinder, column (UP and DOWN) solenoid valves, column cylinder pilot operated check valve, column cylinder, main floor lock solenoid valves, outrigger floor lock valve solenoid valve, three main floor lock cylinders, two outrigger floor lock cylinders, outrigger pressure relief valve, two head section gas cylinders, column assembly which includes slides, main controller board which includes a 10 amp fuse, charging / power driver board which includes a 40 amp fuse, RFI filter, transformer, four batteries, hand control which includes button board and hand control board, foot control which includes foot switch pad and foot control interface board, lateral tilt position sensor, trendelenburg position sensor, leg position sensor, seat position sensor, emergency override board, distribution board, main floor lock status switch, outrigger floor lock status switch, five table orientation switches, plug receptacle which includes two 5 amp fuses, and line power pilot lamp.

B. Theory of Operation. See Figures 5-1, Sheets 1

and 2, and Figure 5-2 for electrical schematic / wiring diagram. See Figure 5-3 for hydraulic schematic.

1.3 Description Of 7100 General Surgery Table

A. General Description (See Figure 1-1, Sheets 1

and 2).

The 7100 General Surgery Table is designed for use as a general surgery table on which virtually any surgical

Electrical Theory Of Operation When the power cord is plugged into the power cord

receptacle, line voltage (approximately 115 VAC) is supplied to the table. The line voltage is applied across an RFI filter. The RFI filter reduces line conducted RFI / EMI that is present on the incoming power line. Across the RFI filter output is a line power pilot lamp which illuminates to indicate power is present at the output of

Page 1-1Printed in U.S.A.

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

LATERAL TILT RIGHT SOLENOID

VALVE

LEG DOWN

SOLENOID

VALVE

GAS

CYLINDERS

COLUMN

CYLINDER

SECONDARY

THERMOSTAT

R.H. CONTROL V ALVE ASSEMBL Y

PRIMARY

THERMOSTAT

LATERAL

TILT LEFT

SOLENOID

VALVE

SEAT UP

SOLENOID

VALVE

LEG UP

SOLENOID

VALVE

LATERAL

TILT

CYLINDER

R.H.

SEAT

CYLINDER

TRENDEL-

ENBURG

CYLINDER

TRENDELENBURG

UP SOLENOID

VALVE

L.H. CONTROL V ALVE ASSEMBL Y

CYLINDER

R.H. LEG

CYLINDER

DISCHARGE

FILTER

L.H.

SEAT

TRENDELENBURG

DOWN

SOLENOID

VALVE

SEAT DOWN

SOLENOID

VALVE

L.H.

LEG

CYLINDER

MAIN FLOOR

LOCK CYLINDER

COLUMN UP

SOLENOID

VALVE

COLUMN DOWN

SOLENOID

VALVE

ALL FLOOR LOCK

SOLENOID VALVE

(UNLOCK)

PUMP & MOTOR

ASSEMBLY

BASE VALVE

ASSEMBLY

Figure 1-1. Major Components (Sheet 1 of 2)

OUTRIGGER

FLOOR LOCK

(LOCK)

MAIN FLOOR LOCK

SOLENOID VALVE

(LOCK)

SUPPLY LINE

CHECK VALVE

LOCK CYLINDER

OUTRIGGER

FLOOR LOCK

CYLINDER

FOOT CONTROL

ASSEMBLY

MAIN FLOOR

FOOT CONTROL

INTERFACE BOARD

FOOT CONTROL

SWITCH PAD

CA7639

Page 1-2Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

LATERAL TILT

POSITION

SENSOR

ORIENTATION

SWITCH (S0)

TRENDELENBURG

POSITION

SENSOR

EMERGENCY

OVERRIDE

BOARD

PLUG

RECEPTACLE

(INCLUDES

5 amp FUSE)

BATTERIES

DISTRIBUTION

BOARD

COLUMN

ASSEMBLY

CONTROL VALVE

SOLENOID COILS

(REFER TO Fig. 1-1

FOR LOCATIONS)

ORIENTATION

SWITCH (S1)

RFI

FILTER

LINE POWER

PILOT LAMP

SEAT

POSITION

SENSOR

LEG

POSITION

SENSOR

ORIENTATION

SWITCH (S3)

ORIENTATION

SWITCH (S2)

MAIN FLOOR

LOCK STATUS

SWITCH

CASTERS

CHARGING / POWER

DRIVER BOARD

(INCLUDES

40 amp FUSE)

TRANSFORMER

PUMP & MOTOR

ASSEMBLY

MAIN CONTROLLER

CASTERS

BOARD (INCLUDES

10 amp FUSE)

Figure 1-1. Major Components (Sheet 2 of 2)

ENABLE

LOCK

DISABLE

L E

V E

U N

SMI

C K

7100

OUTRIGGER

FLOOR LOCK

STATUS SWITCH

ORIENTATION

SWITCH (S5)

HAND

CONTROL

ASSEMBLY

CA7640

Page 1-3Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

the RFI filter. The transformer primary lines are also connected across the RFI filter output. The transformer steps the line voltage down to 32.5 VAC ± 2 VAC. The

32.5 VAC from the output of the transformer is applied to the charging / power driver board. The charging / power driver board uses a DC rectifying circuit to convert the 32.5 VAC to approximately 27.8 VDC. The charging / power driver board regulates the charging rate of the four batteries by regulating the rate at which the 27.8 VDC is applied to the batteries. The charging / power driver board also supplies 27.5 VDC to the main controller board to power it. The transformer has thermal fuses connected in each primary winding and they are embedded between the primary and secondary windings. If the transformer overheats, the normally closed (N.C.) thermal fuses open, disconnecting power to the transformer.

The transformer is primarily used to supply power to the charging / power driver board, so the board can charge the batteries and supply power to the rest of the table. When the batteries are being charged, the charging / power driver board regulates the charge rate of the batteries. This means that a full load is not continuously being placed on the transformer, which is important because the transformer is not sized to draw a full current load continuously. If the batteries are low and a function is selected, power to drive the motor pump(s) is drawn from the batteries first and then from the transformer as necessary. If the batteries are too low or a function is selected for too long, the continuous current draw thru the transformer will overheat the transformer very quickly, causing the thermal fuses to blow. It is important that a table with a low battery charge be operated only in case of emergency and for a very short time period (less than a minute).

Logic Theory Of Operation When the ENABLE button is pressed, a 5 VDC signal is

sent to the main controller board, activating it. The main controller board performs a self diagnostic check on itself. If the self diagnostic check fails, error code E11 (Internal RAM / Register Failure) is displayed on the hand control.

The main controller board also checks the status of the table orientation switches to determine if the table is in "Normal" or "Reverse" orientation. If the table is determined to be in normal orientation, the controller board actuates functions as shown on the hand control. If the table is determined to be in reverse orientation, the controller board actuates functions in reverse of what is shown on the hand control (if LATERAL TILT

LEFT is pressed, LATERAL TILT RIGHT function will actually move). This is so a doctor / nurse can operate the table in any orientation without having to remember which orientation the table is in. This feature applies to all functions except TABLE UP and TABLE DOWN. The foot control is functional only when the table is in normal orientation; the hand control must be used for reverse orientation. The main controller determines table orientation as follows: There are four possible table orientations: Normal, Reverse, Normal-1, and Reverse-1. See Figure 5-2. For normal orientation, the head section is installed on the back section of the table and the leg section is installed on the seat section. The head section depresses orientation switch S0 while the leg section depresses orientation switch S2. The posts on the leg section and head section, which are inserted into the table to attach them to the table, are machined so that only the larger of the two posts will depress a switch. The main controller board monitors status of terminal 4 (ST30). When orientation switch S0 is depressed, a circuit is completed which causes input at terminal 4 (ST30) to be pulled down to 0 VDC by grounding circuit at terminal 3 (ST30). The main controller board senses the input has been pulled down to 0 VDC, indicating that the head section is attached to the back section. Also, when orientation switch S2 is depressed, a circuit is completed which causes input at terminal 6 (ST30) to be pulled down to 0 VDC by grounding circuit at terminal 5 (ST30). The main controller board senses the input has been pulled down to 0 VDC, indicating that the leg section is attached to the seat section. For reverse orientation, the leg section is installed on the seat section of the table and the head section is installed on the leg section. The leg section depresses orientation switch S2 while the head section depresses orientation switch S5. The posts on the leg section and head section, which are inserted into the table to attach them to the table, are machined so that only the larger of the two posts will depress a switch. When orientation switch S2 is depressed, a circuit is completed which causes input at terminal 6 (ST30) to be pulled down to 0 VDC by grounding circuit at terminal 5 (ST30). The main controller board senses the input has been dragged down to 0 VDC, indicating that the leg section is attached to the seat section. Also, when orientation switch S5 is depressed, a circuit is completed which causes input at terminal 2 (ST29) to be pulled to 0 VDC by grounding circuit at terminal 1 (ST30). The main controller board senses the input has been pulled down to 0 VDC, indicating that the head section is attached to the leg section. The main controller detects the Normal-1 and Reverse-1 table orientations the same way using orientation switches S0, S1, S2, S3, and S5 as shown in Figure 1-2.

Page 1-4Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

The main controller board and charging / power driver board uses status circuits to check the functionality of the following electrical components: motors, charging / power driver board, valve spool solenoids, main controller board, position sensors, foot control switch pad, and hand control button board.

A status circuit, on the charging / power driver board, monitors the amount of current draw thru the motor pump windings, when a function has been selected. If the current draw exceeds a predetermined value, the main controller board stops all functions and displays error code E02 (Overcurrent - Motor Pump #1) or E03 (Overcurrent - Motor Pump #2), which indicates a failure of a motor pump. If the current draw falls below a predetermined value, the main controller board stops all functions and displays error code E04, which indicates failure of the charging / power driver board. A status circuit, on the main controller board, monitors the enable circuitry for each valve spool solenoid and detects if a valve spool solenoid or enable circuitry of the main controller board is functioning correctly. If not, the main controller board stops all functions and displays error code E05 (Valve Drive Failure), which indicates failure of either a valve spool solenoid or main controller board.

Another status circuit, on the main controller board, monitors voltage input from the position sensors. If the voltage value exceeds or falls below a predetermined range, the main controller board stops all functions and displays the appropriate error code: E07 (Trendelenburg Position Sensor Failure), E08 (Tilt Position Sensor Failure), E09 (Seat Position Sensor Failure), E10 (Leg Position Sensor Failure). An error code indicates failure of either a position sensor, main controller board, or wiring.

The main controller board also monitors the main floor lock status switch, outrigger floor lock status switch, motor pump #1 primary thermostat, and motor pump # 2 primary thermostat. When the hand control is ENABLED, the main controller board checks if the normally open (N.C.) main floor lock status switch and outrigger floor lock status switch is untripped. If the main controller does not detect that untripped, it energizes the main floor lock valve spool and motor pump, causing the main floor locks to extend. After eight seconds, the main controller deenergizes the main floor lock valve spool and motor pump, and then energizes the outrigger floor lock valve spool and motor pump, causing the outrigger floor locks to extend. After six seconds, the main controller de-

both

status switches are

energizes the outrigger floor lock valve spool and motor pump. At this time the main controller checks the status of the status switches again. If the main controller does not detect that untripped, it stops all functions and displays E01 (Floor Lock Status Switch Is Not Responding).

Also, when the hand control is ENABLED, the main controller board checks if the normally closed (N.C.) motor pump primary thermostats are closed. If the main controller board detects an open circuit, it stops all functions and displays error code E13 (Overheat Motor Pump #1) or E14 (Overheat - Motor Pump #2), which indicates that the motor pump has overheated, opening its primary thermostat.

Also, when the hand control is ENABLED, the main controller board checks status of each set of switches in the hand control; there are two normally open (N.O.) switches for each function. If there is a set of switches for which only one of the two switches is detected as being pressed, the main controller board detects this and displays error code E15 (Hand Control Switch Failure). This indicates that one of the switches is stuck in closed position. Also, if a function button is pressed and then the error code E15 displays, this indicates that only one of the two switches is working properly. This safety feature prevents unintended table movement due to a switch malfunction.

Also, when a function is selected using the foot control, the main controller board checks the status of each set of switches in the foot control pad; there are two normally open (N.O.) switches for each function. If there is a set of switches for which only one of the two switches is detected as being pressed, the main controller board detects this and displays error code E06 (Foot Switch Failure) on the hand control. This indicates that one of the two switches is stuck in closed position or only one of the two switches is working properly. This safety feature prevents unintended table movement due to a switch malfunction.

The motor pumps also have secondary thermostats which provide backup protection if the primary thermostats fail. If a motor pump overheats and its primary thermostat does not shut off the motor pump, the normally open (N.O.) secondary thermostat closes, directly shorting current past the motor windings to ground, causing the 40 amp fuse on the charging / power driver board to blow, which stops the motor pump.

both

status switches are

Page 1-5Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

Hydraulic System Theory Of Operation When a function is selected using the hand control or

foot control, the motor pump(s) begins to run and the selected function's valve spool shifts. Hydraulic oil flows thru a strainer in the reservoir and into the pump chamber. The pump pumps oil thru an internal check valve, a discharge filter, and the supply line check valve. Oil is now in the supply line, ready to power the selected function's cylinder(s). The motor pump internal check valve and supply line check valve allow oil to flow thru them to the supply line, but close when the motor pump stops running, preventing oil from back flowing into the motor pump, which prevents gravity drain out of supply line and back into motor pump. The discharge filter removes any contaminants from the oil before the oil reaches any hydraulic components. This prevents reduced life expectancy of hydraulic components such as seals and o-rings and prevents clogging of valves and check valves. There is a 250 BAR (3625 PSI) pressure relief valve on each motor pump. If pressure reaches or exceeds this pressure, the valve opens dumping oil back into the reservoir.

Oil is now in the supply line, ready to power the selected function's cylinder(s).

For the Trendelenburg and Lateral Tilt functions, the following happens: If Trendelenburg or Lateral Tilt Left button on hand control was selected (in normal table orientation), the motor pump is energized and the valve spool for that function moves to an up function position (oil will now flow in the new oil flow path that has been created; this path is shown by the straight flow symbols on the hydraulic schematic) and oil flows thru a check valve (A) and into the base of the cylinder, extending the cylinder. The check valve (A) prevents oil from escaping from the cylinder after the valve spool is deenergized, keeping the cylinder from drifting. Oil also flows thru a pilot line (represented by a dashed line on hydraulic schematic) and extends a pilot piston. The pilot piston forces open the check valve (B) on the retracting side of the cylinder, allowing oil to escape from the top side of the cylinder, thru the valve spool and into the oil return line. If Reverse Trendelenburg or Lateral Tilt Right button on hand control was selected (in normal table orientation), the motor pump is energized and the valve spool for that function moves to a down function position (oil will now flow in the new oil flow path that has been created; this path is shown by the crossed flow symbols on the hydraulic schematic) and oil flows thru a check valve (B) and into the top of

the cylinder, retracting the cylinder. The check valve (B) prevents oil from escaping from the cylinder after the valve spool is de-energized, keeping the cylinder from drifting. Oil also flows thru a pilot line (represented by a dashed line on hydraulic schematic) and extends a pilot piston. The pilot piston forces open the check valve (A) on the base of the cylinder, allowing oil to flow from the base of the cylinder, thru the valve spool, and into the oil return line.

For the Seat and Leg functions, the following happens: If SEAT UP or LEG UP button on hand control was selected (in normal table orientation), the motor pump is energized and the valve spool for that function moves to an up function position (oil will now flow in the new oil flow path that has been created; this path is shown by the straight flow symbols on the hydraulic schematic) and oil flows thru a check valve (A) and into the base of the left cylinder (master cylinder), extending the cylinder. The check valve (A) prevents oil from escaping from the cylinder after the valve spool is de-energized, keeping the cylinder from drifting. Oil also flows thru two pilot lines (represented by dashed lines on hydraulic schematic) and extends two pilot pistons (B and D). One pilot piston forces open a check valve (B) which allows oil to flow out of the top side of the left cylinder thru another check valve (C) and into the base of the right cylinder (slave cylinder), extending the cylinder. The other pilot piston forces open the check valve (D) on the top side of the right cylinder (slave cylinder), allowing oil to flow from the top side of the cylinder, flow thru the valve spool and into the oil return line. If SEAT DOWN or LEG DOWN button on hand control was selected (in normal table orientation), motor pump is energized and the valve spool for that function moves to a down function position (oil will now flow in the new oil flow path that has been created; this path is shown by the crossed flow symbols on the hydraulic schematic) and oil flows thru a check valve (D) and into the top of the right cylinder (slave cylinder), retracting the cylinder. The check valve (D) prevents oil from escaping from the right cylinder after the valve spool is de-energized, keeping the cylinder from drifting. Oil also flows thru two pilot lines (represented by dashed lines on hydraulic schematic) and extends two pilot pistons. One pilot piston forces open a check valve (C) which allows oil to flow out of the base of the right cylinder thru another check valve (B) and into the top side of the left cylinder (master cylinder), retracting the cylinder. The other pilot piston forces open the check valve (A) on the base of the left cylinder (master cylinder), allowing oil to flow out of the base of the cylinder, thru the valve spool, and into the oil return line.

Page 1-6Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

For the column function, the following happens: If TABLE UP button on hand control was selected, the motor pump energizes and the valve spool for that function moves to an up function position (oil will now flow in the new oil flow path that has been created; this path is shown by the straight flow symbols on the hydraulic schematic) and oil flows thru a check valve (A) and into the base of the column cylinder, extending the cylinder. The check valve (A) prevents oil from escaping from the column cylinder after the valve spool is de-energized, keeping the cylinder from drifting. Oil flows out of the top side of the column cylinder as necessary, thru the valve spool, and into the return line. If TABLE DOWN button on hand control was selected, the motor pump energizes and the valve spool for that function moves to a down function position (oil will now flow in the new oil flow path that has been created; this path is shown by the crossed flow symbols on the hydraulic schematic) and oil flows to the top side of the base cylinder, retracting the cylinder. Oil also flows thru a pilot line (represented by a dashed line on hydraulic schematic) and extends a pilot piston. The pilot piston forces open the check valve (A) on the base of the cylinder, allowing oil to flow out of the base of the cylinder, thru the valve spool, and into the oil return line.

For the floor lock functions, the following happens: If ENABLE / LOCK button on hand control is selected, the motor pump energizes and the valve spool for the main floor lock cylinders moves to an up function position (oil will now flow in the new oil flow path that has been created; this path is shown by the straight flow symbols on the hydraulic schematic) and oil flows thru a check valve (A) and into the base of the three main floor lock cylinders, extending the cylinders. The check valve (A) prevents oil from escaping from the three main floor lock cylinders after the valve spool is de-energized, keeping the cylinders from drifting. After approximately 10 seconds, the main controller board de-energizes the motor pump and main floor lock spool and then reenergizes the motor pump and energizes the outrigger floor lock valve spool to an up function position (oil will now flow in the new oil flow path that has been created; this path is shown by the straight flow symbols on the hydraulic schematic) and oil flows thru two check valves (B and C) and into the base of the two outrigger floor lock cylinders, extending the cylinders. As soon as the

pressure in the outrigger floor lock cylinders reaches 10 BARS (145 PSI), the outrigger pressure relief valve opens, dumping oil back to the return line. The outrigger cylinders were designed to add stability to the table on an uneven floor. The three main floor lock cylinders lift the table off of the casters; then the two outrigger floor lock cylinders extend with enough power to stabilize the table outrigger pressure relief valve accomplishes this. The check valves (B and C) prevent oil from escaping from the two outrigger floor lock cylinders after the valve spool is de-energized, keeping the cylinders from drifting. If UNLOCK & ENABLE buttons on hand control is selected for three seconds, the motor pump energizes and the main floor lock valve spool moves to a down function position (oil will now flow in the new oil flow path that has been created; this path is shown by the crossed flow symbols on the hydraulic schematic). The oil flows thru three pilot lines (represented by dashed lines on hydraulic schematic) and extends three pilot pistons, which forces open three check valves; check valves A, B, and C. With all three check valves open, the oil flows out of the base of the three main floor lock cylinders and the two outrigger floor lock cylinders, causing them to retract. There is a strong spring in each floor lock cylinder which helps retract the cylinder.

On the seat and leg functions, there is a manually operated two way-valve (slave line valve) which is used to add or remove oil from the closed loop (slave line) to synchronize the stroke of the left (master) and right (slave) cylinders. There is a manually operated twoway valve (slave line valve) on the column function, which is used to add or remove oil from the middle stage of the column cylinder (if there is too much oil in the second stage, the column cylinder will "jump" downward and make a noise when column down function is selected. If there is not enough oil in the second stage, the full height potential of the column cylinder will not be reached).

Orifices are at the entrance (early units) or are internal (later units) to the Trendelenburg, Lateral Tilt, Seat, and Leg cylinders to meter the flow of oil into the cylinders, thereby regulating the speed of the cylinders.

without lifting

the table further. The

Page 1-7Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

1.4 SPECIFICATIONS

Factual data for the 7100 General Surgery Table is provided in Table 1-1.

Table 1-1. Specifications

Description Data

Weight

Normal (w/ upholstery & all sections) ... 738 lb. (335 kg)

With Shipping Carton.......................... 842 lb. (382 kg)

Shipping Carton........ 58 in. "L" x 30 in. "W" x 40 in. "H"

(147 cm x 76 cm x 102 cm)

Dimensions:

Table Top Length ............................. 76.8 in. (195 cm)

Table Top Width ...................................... 20.5 (52 cm)

Overall Width......................................... 24 in. (61 cm)

Overall Length..................................... 78 in. (198 cm)

Table Positioning:

Table Top Height (Adjustable).......... 27.7 (± 0.2) in. to

43.9 (± 0.2) in.

(70 to 112 cm)

Trendelenburg ......................................0° to 28° (±1°)

Reverse Trendelenburg....................... 0° to -28° (±1°)

Lateral Tilt................ 0° to -18° (±1°) in either direction

Seat Section.......... + 25° (±1°) to -40° (±1°) in relation

to back section

Leg Section ....................................... +80° (+2°/-0°) to

-102° (+3°/-0°) in

relation to seat section

Coordinating Flex (Normal Position):

Trendelenburg ................ +20° (±5°) above horizontal

Seat Section ......-40° (±5°) in relation to back section

Coordinating Reflex (Normal Position):

Trendelenburg ................. -12° (±5°) below horizontal

Seat Section ..... +25° (±5°) in relation to back section

Coordinating Flex (Reverse Position):

Trendelenburg ................ +28° (±2°) above horizontal

Leg Section........-56° (±2°) in relation to back section

Coordinating Reflex (Reverse Position):

Trendelenburg ................. -28° (±5°) below horizontal

Leg Section..... +56° (±10°) in relation to back section

Head Section:

Mounted on Head End...........+30° (±3°) to -30° (±3°)

Mounted on Foot End ............+30° (±3°) to -75° (±5°)

Table Speed (Table in normal orientation, full battery

charge, ambient oil temp.):

Extend Column Fully .................. 16.0 to 21.0 seconds

Retract Column Fully.................. 16.0 to 21.0 seconds

Reverse Trend. to Trend. ........... 20.5 to 24.5 seconds

Trend. to Reverse Trend. ........... 16.0 to 20.0 seconds

Lat. Tilt R to Lat. Tilt L .................. 9.5 to 12.5 seconds

Lat. Tilt L to Lat. Tilt R ................ 10.0 to 13.0 seconds

Seat Down to Seat Up ................ 18.0 to 21.0 seconds

Seat Up to Seat Down ................ 18.5 to 21.5 seconds

Leg Down to Leg Up................... 21.0 to 27.0 seconds

Leg Up to Leg Down................... 29.0 to 35.0 seconds

Weight Capacity (maximum):

Normal Table Orientation ..................500 lbs. (227 kg)

Reverse Table Orientation..............400 lbs. (181.4 kg)

Leg Section ......................................200 lbs. (90.7 kg)

Head Section.........................................40 lbs. (18 kg)

Overweight Operation ................ Patient Positioning is

restricted. To learn of limita-

tions, contact the Surgical Table Product Manager at

1-800-643-6275

Hydraulic System Oil ................ ISO Viscosity Grade 32

Premium Hydraulic Fluid

Reservoir Capacity ..................... 2.1 Quarts (2.0 Liters)

System Capacity ........................ 3.7 Quarts (3.5 Liters)

Battery Charging Time.............................. 8 to 12 hours

Motor Pump Pressure

Relief Valve ...............Opens At 250 BARS (3625 PSI)

Outrigger Pressure

Relief Valve ...................Opens At 10 BARS (145 PSI)

Electrical Requirements:

115 VAC Unit........................... 110 - 120 VAC, 60 HZ,

2 amp, single phase

Battery Power Output............ 24 VDC, 18 amp-hours

Page 1-8Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

MODEL

NUMBER

SERIAL

NUMBER

SMI

7100-001

115 VAC

2 AMP 60 HZ

TDWXXXXX

MODEL

INPUT

RATING

SERIAL NO.

Return To Table Of Contents

GENERAL INFORMATION

1.5 Parts Replacement Ordering

If a part replacement is required, order the part directly from the factory as follows:

(1) Refer to Figure 1-2 to determine the location of

the model number and serial number of the unit and record this data.

(2) Refer to the Parts List to determine the item

numbers of the parts, part numbers of the parts, descriptions of the parts, and quantities of parts needed and record this data (Refer to para 6.1).

NOTE

Ask the Purchasing Department of the company that owns the unit for this information. Otherwise, this information may be obtained from the dealer that sold the unit.

(3) Determine the installation date of the unit and

record this data.

(4)Call SMI with the recorded information and

ask for the Hospital Products Technical Services Department.

1.6 Special Tools

Table 1-2 lists all of the special tools needed to repair the unit, how to obtain the special tools, and the purpose of each special tool.

Table 1-2 is on the following page.

SMI

7100

Figure 1-2. Model Number / Serial

Number Location

CA7681

Page 1-9Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

Table 1-2. Special Tools List

Description of Special Tool

Multimeter Commercially Available Any Type Used to perform continuity and voltage checks. Pin Extractor (has

interchangable bits - M3x0.5, M4x0.7, M5x0.8, M6x1.0, 1/4-20, 10-24, and 5/16-18)

Spanner Wrench - locking nut Schaerer Mayfield USA, Inc.

Spanner Wrench - brass pivot puck

Retaining Bolt Schaerer Mayfield USA, Inc.

Spanner Wrench - retainer cap Schaerer Mayfield USA, Inc.

Pressure Relief Valve Test Harness

Blanking Plug Kit Schaerer Mayfield USA, Inc.

Soldering Iron Commercially Available Any Type Used to connect wires to terminals with solder. 60 / 40 Solder Commercially Available Any Type Type of solder which should be used when

Internal retaining ring pliers Commercially Available Any Type Used to remove snap rings which secure bearings

Torque Wrench Commercially Available Any Type Used to tighten hardware to specified torque

7100 Transport Tool Schaerer Mayfield USA, Inc.

7100 Tipping Tool Schaerer Mayfield USA, Inc.

Manufacturer's

Name / Address / Phone

Schaerer Mayfield USA, Inc. 4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

Schaerer Mayfield USA, Inc. 4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

Schaerer Mayfield USA, Inc. 4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

4900 Charlemar Drive Cincinnati, Ohio 45227 (513) 561-0195

Manufacturer's

Part Number

M05390 Used to pull pins which secure cylinders, handles,

etc. in place. Can also be used to remove caster fork.

M07235 Used to remove locking nut which secures top of

column cylinder in column.

M07236 Used to remove brass pivot puck which secures

top of column cylinder in column.

M07407 Used to hold rod of column cylinder stationary,

while special tools, M07235 and M07236 are used.

M07161 Used to remove retainer cap which secures

latching mechansim in place.

M07443 Used to adjust crack settings of motor pump

pressure relief valves and outrigger pressure relief valve.

502-0176-00 Used to cap the end of hydraulic lines to allow

pressure checks to be made.

soldering wires on surgery table.

in base of cylinders.

values.

502-0169-00 A dolly type tool which is used to transport 7100

table around.

502-0168-00 Used to tip over 7100 table to access base of table

for servicing.

Purpose of Special Tool

Page 1-10Printed in U.S.A.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

SECTION II

TESTING AND TR OUBLESHOOTING

SECTION II

2.1 Operational Test

In order to effectively diagnose the malfunction of the 7100 general surgical table, it may be necessary to perform an operational test as follows:

DANGER

surgical table. Failure to do so could result in personal injury.

Power must be supplied to the unit to measure the voltage at the Test Points. Do not touch any bare wires or terminals while making these voltage checks. Failure to do so may result in electrical shock which could result in serious personal injury or death.

Refer to the Operator Manual for complete instructions on operating the

NOTE

The Operational Test, for the most part, only describes what should happen when the surgical table is operated. If the surgical table does something other than described, a problem has been discovered. Refer to the Troubleshooting Guide to determine the cause of the problem and its correction.

(1) Plug power cord into table's plug receptacle.

See Figure 2-1, Sheets 1 and 2.

(2) Observe. The line power pilot lamp should

illuminate. (3) Unplug the power cord. (4) Press ENABLE button on hand control. (5) Observe. The hand control display should

illuminate and display the current table position

and battery charge level (XX POSITION and

BATT LEVEL XX. After 10 seconds, the hand

control display should extinguish. (6) Press and hold UNLOCK & ENABLE buttons

on hand control for three seconds.

(7) Observe. The motor pump should run and the

table should lower (floor lock cylinders should retract) until table is on its casters. The hand control display should read UNLOCKING

FLOOR and then ON WHEELS. (8) Move the surgery table around. (9) Observe. The casters should swivel freely and

the table should roll easily on the casters. The

table should not wobble.

(10) Press ENABLE button on hand control. (11) Observe. The motor pump should run and the

main floor lock cylinders should extend. After

eight seconds, the motor pump should stop

running. Then the motor pump should begin

running again and the outrigger floor lock

cylinders should extend. After six seconds, the

motor pump should stop running. The hand

control display should read LOCKING FLOOR

while the floor lock cylinders are extending.

(12) Install the leg section on the end of the seat

section; then install the head section on the end

of the leg section. Attempt to remove the

sections without touching the latch handles.

(13) Observe. When the sections are inserted in

place, they should be automatically captured by

the latching mechanisms, which should prevent

them from being removed unless latch handles

are moved to the unlocked position (to move

latch handles to unlocked position, pull latch

handles outward and rotate them toward you).

(14) Rotate latch handles to locked position (to

move latch handles to locked position, rotate

them away from you) and then pull and push on

the leg and head sections.

(15) Observe. When the latch handles are rotated

to the locked position, the section being in-

stalled should now be held securely in place.

No side-to-side or in-and-out movement should

be possible.

Page 2-1Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

LINE POWER

PILOT LAMP

HEAD

SECTION

HAND

CONTROL

LATCH

HANDLE

FOOT

CONTROL

RELEASE

HANDLE

ENABLE

LOCK

LEVEL

SMI

DISABLE

UNLOCK

7100

EMERGENCY

OVERRIDE

PANEL

SMI

7100

SMI

PLUG

RECEPTACLE

POWER

CORD

SEAT

SECTION

LATCH

7100

BACK

SECTION

HANDLE

LATCH

HANDLE

LEG

SECTION

+/- 2° (Typ.)

TRENDEL-

ENBURG

REVERSE

TRENDEL-

ENBURG

TABLE

TABLE DOWN

FLOOR

LOCK

CYLINDERS

LATERAL

TILT

LEFT

LATERAL

TILT

RIGHT

Figure 2-1. Operational Test (Sheet 1 of 2)

LOCKED

POSITION

AUTO

CAPTURE

POSITION

UNLOCKED

POSITION

LATCH HANDLE

POSITIONS

(TYP. 6 PLACES)

CA7682

Page 2-2Printed in U.S.A.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

BUTTONS

DISABLE

LATERAL

TILT LEFT

SYSTEM

OVERRIDE

SYSTEM

OVERRIDE

DISABLE

TABLE DOWN

LATERAL

TILT RIGHT

TABLE

LEVEL

(RETURN TO)

TRENDELENBURG

LEVEL

UNLOCK

LEG

UNLOCK

REVERSE

SEAT

DOWN

LEG

DOWN

HAND

CONTROL

DISPLAY

ENABLE

TRENDELENBURG

TABLE

LATERAL

TILT LEFT

SEAT

LEG

FLEX

ENABLE

LOCK

DISABLE

LEVEL

UNLOCK

SMI

LEVEL

(RETURN TO)

DISABLE

REVERSE

TRENDELENBURG

TABLE DOWN

LATERAL

TILT RIGHT

SEAT

DOWN

LEG

DOWN

7100

REFLEX

UNLOCK

CA7683

Figure 2-1. Operational Test (Sheet 2 of 2)

(16) Press the ENABLE button on hand control. (17) Observe. The hand control display should read

REVERSE POSITION.

(18) Remove head section from leg section. Install

head section on back section and lock into position with latch handles.

(19) Observe. When the head section is inserted in

place, it should be automatically captured by the latching mechanisms, which should prevent the section from being removed unless latch handles are moved to the unlocked position. When the latch handles are rotated to the locked position, the section being installed should now be held securely in place. No sideto-side or in-and-out movement should be possible.

(20) Press the ENABLE button on hand control. (21) Observe. The hand control display should read

NORMAL POSITION.

(22) Press the ENABLE button and then press the

TABLE UP, TABLE DOWN, TRENDELENBURG, REVERSE TRENDELENBURG, LATERAL TILT LEFT, LATERAL TILT RIGHT, SEAT UP, SEAT DOWN, LEG UP, LEG DOWN, FLEX, and REFLEX buttons, running each function thru its full range of motion, and checking its speed and range of motion performance.

Page 2-3Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

(23) Observe. The table performance should meet

the following specifications:

Range Of Motion:

Table Top Height (Adjustable) .......... 27.7 (± 0.2) in. to

43.9 (± 0.2) in.

(70 to 112 cm)

Trendelenburg ......................................0° to 28° (±1°)

Reverse Trendelenburg....................... 0° to -28° (±1°)

Lateral Tilt................ 0° to -18° (±1°) in either direction

Seat Section .......... + 25° (±1°) to -40° (±1°) in relation

to back section

Leg Section ....................................... +80° (+2°/-0°) to

-102° (+3°/-0°) in

relation to seat section

Coordinating Flex (Normal Position):

Trendelenburg ................+20° (±5°) above horizontal

Seat Section ......-40° (±5°) in relation to back section

Coordinating Reflex (Normal Position):

Trendelenburg ................. -12° (±5°) below horizontal

Seat Section ..... +25° (±5°) in relation to back section

Coordinating Flex (Reverse Position):

Trendelenburg ................+28° (±2°) above horizontal

Leg Section........ -56° (±2°) in relation to back section

Coordinating Reflex (Reverse Position):

Trendelenburg ................. -28° (±5°) below horizontal

Leg Section.......+ 56° (±10°) in relation to back section

Table Speed (Table in normal orientation, full battery

charge, ambient oil temp.):

Extend Column Fully .................. 16.0 to 21.0 seconds

Retract Column Fully.................. 16.0 to 21.0 seconds

Reverse Trend. to Trend. ........... 20.5 to 24.5 seconds

Trend. to Reverse Trend. ........... 16.0 to 20.0 seconds

Lat. Tilt R to Lat. Tilt L .................. 9.5 to 12.5 seconds

Lat. Tilt L to Lat. Tilt R ................ 10.0 to 13.0 seconds

Seat Down to Seat Up ................ 18.0 to 21.0 seconds

Seat Up to Seat Down ................ 18.5 to 21.5 seconds

Leg Down to Leg Up...................21.0 to 27.0 seconds

Leg Up to Leg Down...................29.0 to 35.0 seconds

(24) Press the ENABLE button and then press the

LEVEL button until the table reaches its level position. Using a protractor, check the table top to ensure it is level within ±2°.

(25) Observe. The table top should move to a level

position within ±2° as follows: The lateral tilt function should level out first; then a sequence of the Seat, Trendelenburg, and Leg functions should move, with each function moving no more than 10° at a time.

(26) Squeeze the release handle on the head

section and move the head section thru its full range of motion.

(27) The head section should move smoothly and

should not take excessive force. The head section should meet the following range of motion specifications:

Head Section:

Mounted on Head End...........+30° (±3°) to -30° (±3°)

Mounted on Foot End ............+30° (±3°) to -75° (±5°)

(28) Move head section to level position and then

place approximately 40 lbs. (18 kgs) at Point D (head section). Observe head section for two

to three minutes. (29) Observe. The head section should not drift. (30) Place approximately 400 lbs. (181.4 kg) of

weight on table top as follows: 28 lbs. (12.7 kg)

at Point D (head section), 152 lbs. (69 kg) at

Point C (back section), 168 lbs. (76.2 kg) at

Point B (seat section), and 52 lbs. (23.6 kg) at

Point A (leg section). (31) Press ENABLE button and then press TABLE

UP and TABLE DOWN buttons to run column

function up and down several times. (32) Observe. Column function should move up and

down steadily and smoothly. No binding

condition should be evident, especially when

column is lowering. There should be no

excessive side-to-side play in column assem-

bly. (33) Remove weight from table top. (34) Press and hold the SYSTEM OVERRIDE

button while pressing the function buttons, one

at a time, on the emergency override panel. (35) Observe. Each function should move as

depicted by the illustration on its button. (36) Press each function button on the foot control.

Then place the table top in reverse position.

Then press each function button on the foot

control again.

Page 2-4Printed in U.S.A.© Schaerer Mayfield USA, Inc. 2004

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

(37) Each function should move as depicted when

table top is in normal position. The table should not operate, using the foot control, when the table top is in reverse position.

(38) Plug power cord into table's power receptacle.

DANGER

Electrical power must be connected to

perform the following steps. Do not touch any bare wires or terminals. Failure to do so could cause an electrical shock which could result in serious personal injury or death.

(39) See Figure 5-1 for this step. Check for 32.5

VAC ± 2 VAC across Test Points C and D and across Test Points D and E.

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Table seems powerless even when plugged into a wall outlet.

Line Power Pilot Lamp does not illuminate (with power cord plugged in).

Line Power Pilot Lamp illuminates, but batteries do not recharge and table is powerless (with power cord plugged in).

Facility circuit breaker providing power to table is tripped.

One of two 5 amp fuses in the power cord receptacle is blown.

RFI filter is blown. See Figure 5-1 for this

Line power pilot lamp is burned out.

Wires or wire connections between power cord receptacle and transformer are broken, loose or dirty.

Thermal fuse(s) in transformer are blown.

Transformer is blown. See Figure 5-1 for this

(40) Observe. There should be 32.5 VAC ±2 VAC

across

both

sets of test points.

(41) See Figure 5-1 for this step. Check for 27.7

VAC ± 2 VAC across Test Points F and G and across Test Points H and J. Check for 27.8 VAC ±2 VAC across Test Points K and L.

(42) Observe. The proper voltages should be

present across

each

set of test points.

2.2 Troubleshooting Procedures

Table 2-1 is a Troubleshooting Guide which is used to determine the cause of the malfunction.

Check to see if facility circuit breaker is tripped.

Remove both 5 amp fuses from power cord receptacle and perform a continuity check on the fuses.

check. Check for 115 VAC +/- 5.0 VAC across Test Points A and B.

Replace suspect line power pilot lamp with known working line power pilot lamp.

Perform a continuity check on all suspect wires or connections.

See Figure 5-1 for this check. Check for 32.5 +/- 2.0 VAC across Test Points C and D and across Test Points D and E.

check. Check for 32.5 +/- 2.0 VAC across Test Points C and D and across Test Points D and E.

If circuit breaker is tripped, determine what caused the circuit breaker to trip, correct the problem, and then reset / replace circuit breaker.

Replace any blown 5 amp fuses.

If 115 VAC +/- 5.0 VAC is not present across Test Points A and B, replace RFI filter. Refer to para 4.41.

Replace line power pilot lamp. Refer to para 4.43.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

If 32.5 VAC +/- 2.0 VAC is not present across one or both of the Test Point groups, replace the transformer. Refer to para

4.42.

If 32.5 VAC +/- 2.0 VAC is not present across one or both of the Test Point groups, replace the transformer. Refer to para

4.42.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Table seems powerless even when plugged into a wall outlet - Continued.

Table operates when power cord is plugged in, but will not operate when power cord is unplugged.

Line Power Pilot Lamp illuminates, but batteries do not recharge and table is powerless (with power cord plugged in) Continued.

Line Power Pilot Lamp illuminates, but table is powerless.

When ENABLE button on hand control is pressed, its display does not illuminate (with power cord unplugged).

Charging / power driver board is malfunctioning.

Wires or wire connections between transformer and charging / power driver board are broken, loose, or dirty.

10 amp fuse on main controller board is blown.

40 amp fuse on charging / power driver board is blown.

10 amp fuse on main controller board is blown.

Batteries are dead and are not supplying charging / power driver board with enough power to operate.

See Figure 5-1 for this check. Check for 27.7 +/- 0.3 VDC across Test Points F and G. Check for 27.7 +/- 0.3 VDC across Test Points H and J. Check for 27.8 +/- 0.3 VDC across Test Points K and L.

Perform a continuity check on all suspect wires or connections.

Perform continuity check on 10 amp fuse.

See Figure 5-1 for this check. Check fuse visually or perform continuity check on fuse (may need to check secondary thermal fuse of motor pump. If blown, thermal fuse will cause 40 amp fuse to blow).

Perform continuity check on 10 amp fuse.

See Figure 5-1 for this check. Check individual batteries by checking for

13.2 +/- 0.4 VDC across terminals of each battery (Test Points M and N).

If proper voltage is not present at Test Points, replace charging / power driver board. Refer to para

4.38.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace 10 amp fuse. See Figure 5-1 for fuse location.

Replace 40 amp fuse. See Figure 5-1 for fuse location.

Replace 10 amp fuse. See Figure 5-1 for fuse location.

If 13.2 +/- 0.4 VDC is not present across Test Points, replace batteries. Refer to para 4.45.

Batteries do not recharge in 6 to 8 hours from low charge.

Batteries do not recharge very quickly.

Charging / power driver board is malfunctioning.

One of thermal fuses in transformer is blown.

Batteries are dead. See Figure 5-1 for this

See Figure 5-1 for this check. Check for 27.7 +/- 0.3 VDC across Test Points F and G.

See Figure 5-1 for this check. Check for 32.5 +/- 2.0 VAC across Test Points C and D, and across Test Points D and E.

check. Check individual batteries by checking for

13.2 +/- 0.4 VDC across terminals of each battery (Test Points M and N).

If proper voltage is not present at Test Points, replace charging / power driver board. Refer to para 4.38.

If 32.5 +/- 2.0 VAC is not present across one or both of the Test Point groups, replace the transformer. Refer to para 4.42.

If 13.2 +/- 0.4 VDC is not present across Test Points, replace batteries. Refer to para 4.45.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

Hand control does not work.

Table 2-1. Troubleshooting Guide

When ENABLE button on hand control is pressed, its display does not illuminate.

TESTING AND TROUBLESHOOTING

10 amp fuse on main controller board is blown.

Main controller board or hand control board is malfunctioning.

Wires or wire connections between main controller board, distribution board, and hand control port are broken, loose or dirty.

Motor pump secondary thermostat is closed creating a direct short to ground, causing 40 amp fuse on charging / power driver board to blow.

Display of hand control board is malfunctioning.

Perform continuity check on 10 amp fuse.

See Figure 5-1 for this check. Check for 5.0 VDC across Test Points P and Q. If 5 VDC is present, check for 5.0 VDC across Test Points Q and R within 10 seconds of pressing ENABLE button on hand control.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

See Figure 5-1 for this check. Check for a resistance value of 0 ohms between Test Points S and T for motor # 1 or Test Points U and V for motor # 2.

Replace suspect hand control board with known working hand control board.

SECTION II

Replace 10 amp fuse. See Figure 5-1 for fuse location.

If 5.0 VDC is not present across Test Points P and Q, the main controller board is malfunctioning. If 5.0 VDC is not present across Test Points Q and R during check, then main controller board or hand control board is malfunctioning. Refer to para

4.37 or 4.5. Clean any dirty connections.

Tighten any loose connections. Replace any broken connectors or wires.

Replace malfunctioning motor, secondary thermostat, and 40 amp fuse. Refer to para 4.32 and 4.47.

Replace hand control board. Refer to para 4.5.

When a button on hand control is pressed, error code E15 displays.

When a function button on hand control is pressed, the motor pump does not run and no error codes display.

Button board is malfunctioning.

Button board is malfunctioning. One of two button switches for a function is stuck in closed position or will not close.

Hand control board is malfunctioning.

Button board is malfunctioning.

Main controller board is malfunctioning.

Replace suspect button board with known working button board.

Perform a continuity check on both button switches of suspect function (when a button switch is pressed, there should be continuity between its two terminals).

Replace suspect hand control board with known working hand control board.

Replace suspect button board with known working button board.

Replace suspect main controller board with known working main controller board.

Replace button board. Refer to para 4.4.

If check fails, replace button board. Refer to para 4.4.

Replace hand control board. Refer to para 4.5.

Replace button board. Refer to para 4.4.

Replace main controller board. Refer to para 4.37.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Hand control does not work - Continued.

When a function button on hand control is pressed, the motor pump does not run and no error codes display - Continued.

Wires or wire connections between main controller board, distribution board, and hand control port are broken, loose or dirty.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Foot control does not work.

Foot control operates fine sometimes, but not every time.

When foot switch on foot control is pressed, nothing happens (hand control display should illuminate when foot switch is depressed).

Table is in reverse orientation.

The hand control or emergency override panel is being used (hand control and / or emergency override panel takes priority over foot control).

One of two foot switches for a function is stuck in closed position or will not close.

Foot control interface board is malfunctioning.

10 amp fuse on main controller board is blown.

Foot control is locked out from being used when table top is in reverse orientation - foot control may only be used when table top is in normal orientation.

Check if problem occurrs only when hand control or emergency override panel is being used.

See Figure 5-1 for this check. Perform a continuity check on both foot switches of suspect function (when foot switch is pressed, there should be continuity between its two terminals).

Replace suspect foot control interface board with known working foot control interface board.

Perform continuity check on 10 amp fuse.

Use hand control or set up table top in normal orientation. Inform operator that Foot Control cannot be used when table is in reverse orientation.

Do not use foot control simultaneously with hand control or emergency override panel. Inform operator of Emergency Override Panel, Hand Control, and Foot Control priorities.

If check fails, replace foot switch pad.

Replace foot control interface board. Refer to para 4.51.

Replace 10 amp fuse. See Figure 5-1 for fuse location.

Main controller board or foot control interface board is malfunctioning.

Wires or wire connections between main controller board, distribution board, and hand control port are broken, loose or dirty.

See Figure 5-1 for this check. Check for 5.0 VDC across Test Points P and W. If 5.0 VDC is present, check for 5.0 VDC across Test Points W and X within 10 seconds of pressing a foot button on foot control.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

If 5.0 VDC is not present across Test Points P and W, the main controller board is malfunctioning. If 5.0 VDC is not present across Test Points W and X during check, then main controller board or foot control interface board is malfunctioning. Refer to para

4.37 or 4.51. Clean any dirty connections.

Tighten any loose connections. Replace any broken connectors or wires.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Error code E01 (Floor Lock Status Switch Is Not Responding) displays on hand control.

Floor lock cylinders do not extend or retract properly and error code E01 appears on hand control.

Floor lock cylinders extend properly, but error code E01 appears on hand control.

Floor lock cylinders do not retract properly and Error code E01 appears on hand control.

Check valve(s) for main floor lock cylinder(s) or outrigger floor lock cylinder(s) are stuck open, allowing floor lock cylinders to retract after extending.

Foreign matter in main floor lock or outrigger floor lock valve spool.

Outrigger pressure relief valve is malfunctioning, preventing outrigger cylinders from extending fully.

Inside surfaces of main floor lock cylinder(s) or outrigger floor lock cylinder(s) are dirty / covered with foreign matter, which prevents the cylinder(s) from extending or retracting fully.

Main floor lock status switch remains tripped after main floor locks have extended (out of adjustment).

Main floor lock status switch is malfunctioning - stuck open.

Outrigger floor lock status switch remains tripped after outrigger floor locks have extended (out of adjustment).

Outrigger floor lock status switch is malfunctioning - stuck open.

Wires or wire connections between floor lock status switches and main controller board are broken, loose or dirty.

One of the floor lock status switches is malfunctioning.

Retaining ring which holds ouside floor lock sleeve onto floor lock cylinder piston is missing.

Remove check valve(s) and check for foreign matter.

Remove valve spool(s) and check for foreign matter. Flush out valve spool manifold with oil.

Replace suspect pressure relief valve with known working pressure relief valve.

Check for foreign matter on inside surfaces of floor lock cylinders.

Check if status switch is tripped.

See Figure 5-1 for this check. Perform continuity check on normally closed status switch (switch untripped = continuity).

Check if status switch is tripped.

See Figure 5-1 for this check. Perform continuity check on normally closed status switch (switch untripped = continuity).

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Perform continuity check on N.C. floor lock status switch (switch untripped = continuity).

Check to see if retaining ring is missing.

Remove and clean check valve(s). Replace any damaged pilot pistons or check valves.

Push on manual release pin of valve spool. If still stuck, remove valve spool(s) and check for foreign matter. Flush out valve spool manifold with oil.

Replace outrigger pressure relief valve and spring. Refer to para 4.36.

Disassemble and clean floor lock cylinder(s).

If necessary, adjust main floor lock status switch. Refer to para 4.48.

If malfunctioning, replace main floor lock status switch. Refer to para 4.48.

If necessary, adjust outrigger floor lock status switch. Refer to para 4.48.

If malfunctioning, replace outrigger floor lock status switch. Refer to para 4.48.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

If necessary, adjust or replace floor lock status switch. Refer to para 4.48.

Replace retaining ring.

SECTION II

Page 2-9Printed in U.S.A.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Error Code E02 (Overcurrent - Motor #1) displays on hand control.

Error code E03 (Overcurrent - Motor #2) displays on hand control.

Error code E04 (Motor Driver Failure) displays on hand control.

Error code E05 (Valve Driver Failure) displays on hand control.

When function is selected, error code E02 appears on hand control.

When function is selected, error code E03 appears on hand control.

When function is selected, error code E04 appears on hand control.

When ENABLE button is pressed, or a function button is selected, error code E05 appears on hand control.

Motor #1 is malfunctioning. Replace suspect motor

Charging / power driver board is malfunctioning.

Motor #2 is malfunctioning. Replace suspect motor

Charging / power driver board is malfunctioning.

Wires or wire connections between charging / power driver board and pumps are broken, loose, or dirty.

Charging / power driver board is malfunctioning.

Motor is burned out (most likely motor #1).

A valve spool solenoid is malfunctioning.

Wires or wire connections between valve spool solenoid and main controller board are broken, loose or dirty.

Main controller board is malfunctioning - valve driver circuitry is malfunctioning.

#1 with known working motor pump.

Replace suspect charging / power driver board with known working board.

#2 with known working motor pump.

Replace suspect charging / power driver board with known working board.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect charging / power driver board with known working board.

Replace suspect motor with known working motor. (If only COLUMN UP function causes error code E04, motor #2 could be malfunctioning motor #2 only runs for this function during normal operation).

Press and hold the SYSTEM OVERRIDE button on the emergency panel, while pressing, one at a time, all the remaining function buttons on the emergency panel (except for DISABLE button). All functions should operate except for function with malfunctioning valve spool solenoid.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect main controller board with known working main controller board.

Replace motor #1. Refer to para 4.32.

Replace charging / power driver board. Refer to para

4.38.

Replace motor #2. Refer to para 4.32.

Replace charging / power driver board. Refer to para

4.38.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace charging / power driver board. Refer to para

4.38.

Replace motor. Refer to para

4.32.

Replace malfunctioning valve spool solenoid. Refer to para

4.27 or 4.28.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace main controller board. Refer to para 4.37.

Page 2-10Printed in U.S.A.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

Error code E06 (Footswitch Failure) displays on hand control.

Error code E07 (Trendelenburg Position Sensor Failure) displays on hand control.

Error code E08 (Tilt Position Sensor Failure) displays on hand control.

Table 2-1. Troubleshooting Guide

When a footswitch button is depressed, error code E06 appears on hand control.

When ENABLE button is pressed, or a function button is selected, error code E07 appears on hand control.

When ENABLE button is pressed, or a function button is selected, error code E08 appears on hand control.

TESTING AND TROUBLESHOOTING

One of two foot switches for a function is stuck in closed position or will not complete circuit when depressed.

Foot control interface board is malfunctioning.

Wires or wire connections between foot switches and foot control interface board are broken, loose or dirty.

Trendelenburg position sensor is malfunctioning.

Wires or wire connections between Trendelenburg position sensor, distribution board, and main controller board are broken, loose, or dirty.

Main controller board is malfunctioning.

Tilt position sensor is malfunctioning.

Wires or wire connections between tilt position sensor, distribution board, and main controller board are broken, loose or dirty.

Main controller board is malfunctioning.

See Figure 5-1 for this check. Perform a continuity check on both foot switches of suspect function (switch not depressed = open / switch depressed = continuity.

Replace suspect foot control interface board with known working foot control interface board.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect Trendelenburg position sensor with known working position sensor.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect main controller board with known working main controller board.

Replace suspect tilt position sensor with known working position sensor.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect main controller board with known working main controller board.

SECTION II

If check fails, replace foot switch pad.

Replace foot control interface board. Refer to para 4.51.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace Trendelenburg position sensor. Refer to para

4.12.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace main controller board. Refer to para 4.37.

Replace tilt position sensor. Refer to para 4.16.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace main controller board. Refer to para 4.37.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Error code E09 (Seat Position Sensor Failure) displays on hand control.

Error code E10 (Leg Position Sensor Failure) displays on hand control.

Error code E11 (Internal RAM / Register Failure) displays on hand control.

When ENABLE button is pressed, or a function button is selected, error code E09 appears on hand control.

When ENABLE button is pressed, or a function button is selected, error code E10 appears on hand control.

When ENABLE button is pressed, error code E11 appears on hand control.

Seat position sensor is malfunctioning.

Wires or wire connections between seat position sensor, distribution board, and main controller board are broken, loose or dirty.

Main controller board is malfunctioning.

Leg position sensor is malfunctioning.

Wires or wire connections between leg position sensor, distribution board, and main controller board are broken, loose or dirty.

Main controller board is malfunctioning.

Battery power level is too low to properly power table.

Replace suspect seat position sensor with known working position sensor.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect main controller board with known working main controller board.

Replace suspect leg position sensor with known working position sensor.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Replace suspect main controller board with known working main controller board.

Plug power cord into table and press ENABLE button on hand control to see if error code E11 displays now.

Replace seat position sensor. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace main controller board. Refer to para 4.37.

Replace leg position sensor. Refer to para 4.20.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace main controller board. Refer to para 4.37.

If error code still appears, recharge batteries.

Error code E12 (Calibrating data Failure) displays on hand control.

Error code E13 (Overheat

- Motor #1) displays on hand control.

When ENABLE button is pressed, error code E12 appears on hand control.

When ENABLE button is pressed, error code E13 appears on hand control.

Main controller board is malfunctioning.

Motor #1 is overheated and has tripped its primary thermostat.

Replace suspect main controller board with known working main controller board.

Wait 60 to 90 minutes to allow motor to cool down and the primary thermostat to reset.

After table is operational again, check to see if motor #1 overheats continually.

Replace main controller board. Refer to para 4.37.

Wait 60 to 90 minutes to allow motor #1 to cool down and the primary thermostat to reset. Replace primary thermostat. Refer to para

4.46. If motor #1 overheats

continually (E13), replace primary thermostat. Refer to para 4.46. If motor #1 still continues to overheat (E13), replace motor. Refer to para

4.32.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

Error code E13 (Overheat

- Motor #1) displays on hand control - Continued.

Error code E14 (Overheat

- Motor #2) displays on hand control.

Error code E15 (Hand Control Button Switch Failure) displays on hand control.

When the hand control is enabled, NORMAL POSITION is displayed even though table is in reverse orientation.

Table 2-1. Troubleshooting Guide

When ENABLE button is pressed, error code E13 appears on hand control Continued.

When ENABLE button is pressed, error code E14 appears on hand control.

When ENABLE button is pressed, error code E15 appears on hand control.

Leg section is installed on seat section and head section is installed on leg section.

TESTING AND TROUBLESHOOTING

Wires or wire connections between motor #1 primary thermostat and main controller board are broken, loose, or dirty.

Motor #2 is overheated and has tripped its primary thermostat.

Wires or wire connections between motor #2 primary thermostat and main controller board are broken, loose, or dirty.

One of two button switches for a function is stuck in closed position or will not complete circuit when pressed.

Hand control board is malfunctioning.

Wires or wire connections between hand control board, hand control port, distribution board, and main control board are broken, loose, or dirty.

Orientation switch S2 or S5 is malfunctioning -stuck open.

Contacts or contact switches which provide wiring to orientation switch S5 are malfunctioning.

Distribution board is malfunctioning.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Wait 60 to 90 minutes to allow motor to cool down and the primary thermostat to reset.

After table is operational again, check to see if motor #2 overheats continually.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

See Figure 5-1 for this check. Perform a continuity check on both button switches of suspect function (button switch not depressed = open / button switch depressed = continuity.

Replace suspect hand control board with known working hand control board.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Perform continuity check on orientation switches (switch depressed = continuity)

See Figure 5-1 for this check. Perform continuity check on contact switches / wiring.

Check for burned out traces on back of distribution board.

SECTION II

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Wait 60 to 90 minutes to allow motor to cool down and the primary thermostat to reset. Replace primary thermostat. Refer to para 4.46.

If motor #2 overheats continually (E14), replace primary thermostat. Refer to para 4.46. If motor #2 still continues to overheat (E14), replace motor. Refer to para

4.32. Clean any dirty connections.

Tighten any loose connections. Replace any broken connectors or wires.

If check fails, replace button board. Refer to para 4.4.

Replace hand control board. Refer to para 4.5.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

Replace malfunctioning orientation switch. Refer to para 4.49.

Replace contact switches.

Replace distribution board. Refer to para 4.40.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

When the hand control is enabled, NORMAL POSITION is displayed even though table is in reverse orientation Continued.

Leg section is installed on seat section and head section is installed on leg section - Continued.

Wires or wire connections between contacts, contact switches, or orientation switches, distribution board, or main controller board are broken, loose or dirty.

See Figure 5-1 for this check. Perform a continuity check on all suspect wires or connections.

Clean any dirty connections. Tighten any loose connections. Replace any broken connectors or wires.

When the hand control is enabled, REVERSE POSITION is displayed even though table is in normal orientation.

When ENABLE and UNLOCK buttons on hand control are pressed, floor lock cylinders do not retract.

Leg section is installed on seat section and head section is installed on back section.

Main floor lock cylinders do not retract properly.

Outrigger floor lock cylinders do not retract properly.

Main controller board is malfunctioning.

Wire for orientation switch S5 on patients right side of table, is grounded against frame of table, sending main controller board wrong signal - (a ground signal which incorrectly interprets that head section is installed on leg section). Problem generally occurrs from wire pinching due to leg joint cover plate.

Distribution board is malfunctioning.

Main controller board is malfunctioning.

All floor lock valve spool is clogged.

Inside surfaces of main floor lock cylinder is dirty / covered with foreign matter, which prevents the cylinder from retracting fully.

Pilot operated check valve is malfunctioning - not opening check valve or check valve is clogged.

All floor lock valve spool is clogged.

Inside surfaces of outrigger floor lock cylinder is dirty / covered with foreign matter, which prevents the cylinder from retracting fully.

Replace suspect main controller board with known working main controller board.

Perform continuity check between table frame and wire.

Check for burned out traces on back of distribution board.

Replace suspect main controller board with known working main controller board.

Check for foreign matter in valve spool.

Check for foreign matter on inside surfaces of main floor lock cylinders.

Check for broken or bent components or foreign matter in pilot operated check valve.

Check for foreign matter in valve spool.

Check for foreign matter on inside surfaces of outrigger floor lock cylinders.

Replace main controller board. Refer to para 4.37.

Repair wire so there is no continuity between the wire and the table frame.

Replace distribution board. Refer to para 4.40.

Replace main controller board. Refer to para 4.37.

Remove valve spool and clean valve spool ports out. Replace valve spool component if necessary.

Disassemble and clean main floor lock cylinders.

Remove pilot operated check valve components. Clean out any foreign matter. Replace any broken or bent components.

Remove valve spool and clean valve spool ports out. Replace valve spool component if necessary.

Disassemble and clean outrigger floor lock cylinders.

+ 223 hidden pages

Ohio 7100 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual