225 Exam Chair Troubleshooting Chart
Chair has no power
|
Symptom |
Cause |
Check |
Action |
|---|---|---|---|
|
No functions will operate. |
Supply voltage. |
Check power cord connections. |
Secure power cord connections at wall outlet and/or chair base. |
|
Check facility circuit breaker. |
Reset facility circuit breaker. |
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Check facility supply voltage. |
Contact electrician to modify voltage if necessary. |
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Primary fuse(s) blown. |
Test fuses at chair base. |
Replace blown fuse. |
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|
Loose or faulty wire connections. |
Check wire connections between power inlet and Motor Control PC Board. |
Secure or replace loose wire connections. |
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|
Check wire connections between power inlet and isolation transformer. |
Secure or replace loose wire connections. |
Chair Receptacle(s) malfunctioning
|
Symptom |
Cause |
Check |
Action |
|---|---|---|---|
|
No power at chair receptacle(s). All other functions work. |
Receptacle circuit breaker(s). |
Check if receptacle circuit breaker(s) tripped. |
Reset receptacle circuit breaker(s). Refer to: User Guide |
|
Receptacle circuit breaker faulty. |
Replace circuit breaker. |
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Primary fuse(s) blown. |
Test fuses at chair base. Refer to: Receptacles / Fuses and Connections |
Replace blown fuse. |
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|
Loose or faulty wire connections. |
Check wire connections. Refer to: Receptacles / Fuses and Connections |
Secure or replace loose wire connections. |
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|
IEC inlet malfunctioning. |
Check voltage out of IEC inlet. Refer to: Receptacles / Fuses and Connections |
Replace IEC Inlet. |
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|
Isolation transformer. |
Check isolation transformer output voltage. Refer to: Receptacles / Fuses and Connections |
Replace faulty isolation transformer. |
Drawer Heater malfunctioning
|
Symptom |
Cause |
Check |
Action |
|---|---|---|---|
|
Drawer heater does not warm up. Heater switch does not illuminate. |
Drawer heater switch. |
Test drawer heater switch. Refer to:Drawer Heater Switch |
Replace faulty switch. |
|
Primary fuse(s) blown. |
Test fuses at chair base. |
Replace blown fuse. |
|
|
Loose or faulty wire connections. |
Check wire connections. |
Secure or replace loose wire connections. |
|
|
Isolation transformer. |
Check isolation transformer output voltage. Refer to:Isolation Transformer |
Replace faulty isolation transformer. |
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|
Drawer heater does not warm up. Heater switch illuminates. |
Loose or faulty wire connections. |
Check wire connections. |
Secure or replace wire connections. |
|
Drawer heater plate. |
Test drawer heater. Refer to:Drawer Heater Plate |
Replace drawer heater plate. |
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|
Drawer heater OK. Heater switch does not illuminate. |
Drawer heater switch. |
Replace drawer heater switch. |
Replace faulty switch. |
Base and Back functions not operating properly
|
Symptom |
Cause |
Check |
Action |
|---|---|---|---|
| No Base or Back functions | Foot control malfunctioning. | If possible, use known working Foot control from another like chair. | Replace faulty Foot control. |
| Perform Foot control cord test. Refer to:Foot Control Cord | Replace faulty Foot control cord. | ||
| Loose or faulty foot control inlet harness connection. | Check inlet harness connections at Motor Control PC Board and chair base. Refer to:Base and Back Function/Fuses and Connections | Secure or replace or replace foot control inlet harness connections. | |
| Primary fuse(s) blown. | Test fuses at chair base. | Replace blown fuse. Refer to:Base and Back Function/Fuses and Connections | |
| Motor Control PC Board fuse(s) blown. | Test F1 and F2 fuses. | Replace blown fuse. Refer to:Base and Back Function/Fuses and Connections | |
| Overtravel limit switch. | On Motor Control PC Board J3 connection, jump orange wires for overtravel limit switch. Refer to:Base and Back Function/Fuses and Connections | Replace defective limit switch. Refer to:Base Function Components | |
| Loose or faulty overtravel limit switch wire connections. | Check wire connections between Motor Control PC Board and limit switch. | Secure or replace loose wire connections. Refer to:Base and Back Function/Fuses and Connections | |
| Passive PFC PC board. | Check input and output voltage at Passive PFC PC board. The voltage should measure 115 VAC. | Replace Passive PFC PC board. Refer to:Base and Back Function/Fuses and Connections |
Base function not operating properly
|
Symptom |
Cause |
Check |
Action |
|---|---|---|---|
| Chair stops and beeps. | Patient weight exceeded 500 lbs. | Check if patient weight exceeded the 500 lb. weight limit. | Inform staff that maximum patient weight is 500 lbs. |
| Active Sensing Technology activated. | Check if chair came in contact with another object. | Remove object from beneath drawer. | |
| Active Sensing Technology switch(es). |
On Motor Control PC Board J4 connection, jump white wires for AST switches. Refer to: Base Function/Fuses and Connections |
Replace defective switch(es). Refer to: Active Sensing Technology Switches |
|
| Loose or faulty Active Sensing Technology switch wire connections. |
Check wire connections between Motor Control PC Board and AST switches. Refer to: Base Function/Fuses and Connections |
Secure or replace loose wire connections. Refer to:Active Sensing Technology Switches |
|
| No Base Up or Base down. | Foot control malfunctioning. | If possible, use known working Foot control from another like chair. | Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to: Foot Control Cord |
Replace faulty Foot control cord. | ||
| Loose or faulty foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. Refer to:Base Function/Fuses and Connections |
Secure or replace foot control inlet harness connections. | |
| Motor Control PC Board fuse(s) blown. |
Test F1 and F2 fuses. Refer to:Base Function/Fuses and Connections |
Replace blown fuse(s). | |
| Base Up/down limit switch(es). |
On Motor Control PC Board J5 connection, jump black/black and white/white wires for Base limit switches. Refer to:Base Function/Fuses and Connections |
Replace defective limit switch(es). Refer to:Base Function Components |
|
| Loose or faulty Base Up/down limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switches. Refer to:Base Function/Fuses and Connections |
Secure or replace loose wire connections. | |
| Overtravel limit switch. |
On Motor Control PC Board J3 connection, jump orange wires for overtravel limit switch. Refer to:Base Function/Fuses and Connections |
Replace defective limit switch. Refer to:Base Function Components |
|
| Loose or faulty overtravel limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switch. Refer to:Base Function/Fuses and Connections |
Secure or replace loose wire connections. | |
| Motor Control PC Board. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if movement: |
Replace defective Motor Control PC Board. | |
| Base actuator motor. |
Perform Base actuator motor resistance test. Refer to:Base Actuator Motor Resistance Test |
Replace defective motor. Refer to:Base Function Components |
|
| Base actuator. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if no movement: Refer to:Base Actuator Test |
Replace defective Base actuator. Refer to: Base Function Components |
|
| No Base Up or Base down, motor is running. | Base actuator motor coupler. |
Inspect motor coupler for damage. Refer to:Base Function Components |
Replace defective motor coupler. Refer to:Base Function Components |
| No Base Up, Base down OK. | Foot control malfunctioning. | If possible, use known working Foot control from another like chair. | Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to:Foot Control Cord |
Replace faulty Foot control cord. | ||
| Loose or faulty foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. Refer to:Base Function/Fuses and Connections |
Secure or replace foot control inlet harness connections. | |
| Base Up limit switch. |
On Motor PC board J5 connection, jump white wires for Base Up limit switch. Refer to:Base Function/Fuses and Connections |
Replace defective limit switch. Refer to:Base Function Components |
|
| Loose or faulty Base Up limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switch. Refer to: Base Function/Fuses and Connections |
Secure or replace loose wire connections. | |
| Motor Control PC Board. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if movement: |
Replace defective Motor Control PC Board. | |
| Base actuator motor. |
Perform Base actuator motor resistance test. Refer to:Base Actuator Motor Resistance Test |
Replace defective motor. Refer to:Base Function Components |
|
| Base actuator. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if no movement: Refer to:Base Actuator Test |
Replace defective Base actuator. Refer to:Base Function Components |
|
| No Base down, Base Up OK. | Foot control malfunctioning. | If possible, use known working Foot control from another like chair. | Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to: Foot Control Cord |
Replace faulty Foot control cord. | ||
| Loose or faulty foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. Refer to: Base Function/Fuses and Connections |
Secure or replace foot control inlet harness connections. | |
| Base down limit switch. |
On Motor Control PC Board J5 connection, jump black wires for Base down limit switch. Refer to: BaseFunction/Fuses and Connections |
Replace defective limit switch. Refer to:Base Function Components |
|
| Loose or faulty Base down limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switch. Refer to: Base Function/Fuses and Connections |
Secure or replace loose wire connections. | |
| Active Sensing Technology activated. | Check if chair came in contact with another object. | Remove object from beneath drawer. | |
| Active Sensing Technology switch(es). |
On Motor Control PC Board J4 connection, jump white wires for AST switches. Refer to: Base Function/Fuses and Connections |
Replace defective switch(es). Refer to:Active Sensing Technology Switches |
|
| Loose or faulty Active Sensing Technology switch wire connections. |
Check wire connections between Motor Control PC Board and AST switches. Refer to: Base Function/Fuses and Connections |
Secure or replace loose wire connections. Refer to:Active Sensing Technology Switches |
|
| Motor Control PC Board. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if movement: |
Replace defective Motor Control PC Board. | |
| Base actuator motor. |
Perform Base actuator motor resistance test. Refer to: Base Actuator Motor Resistance Test |
Replace defective motor. Refer to:Base Function Components |
|
| Base actuator. |
Move J2 to J1 connector on Motor Control PC Board. Use Back function on controller, if no movement: Refer to: Base Actuator Test |
Replace defective Base actuator. Refer to:Base Function Components |
|
| Chair stops and beeps. | Patient weight exceeded 500 lbs. | Check if patient weight exceeded the 500 lb. weight limit. | Inform staff that maximum patient weight is 500 lbs. |
| No Back up or Back down. | Foot control malfunctioning. | If possible, use known working Foot control from another like chair. | Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to: Foot Control Cord |
Replace faulty Foot control cord. | ||
| Loose or faulty foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. Refer to: Back Function/Fuses and Connections |
Secure or replace foot control inlet harness connections. | |
| Motor Control PC Board fuse(s) blown. |
Test F1 and F2 fuses. Refer to: Back Function/Fuses and Connections |
Replace blown fuse(s). | |
| Back up/down limit switch(es). |
On Motor Control PC Board J4 connection, jump grey/grey and white/white wires for Back limit switches. Refer to: Back Function/Fuses and Connections |
Replace defective limit switch(es). Refer to:Back Function Components |
|
| Loose or faulty Back up/down limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switches. Refer to: Back Function/Fuses and Connections |
Secure or replace loose wire connections. | |
| Overtravel limit switch. |
On Motor Control PC Board J3 connection, jump orange wires for overtravel limit switch. Refer to:Back Function/Fuses and Connections |
Replace defective limit switch. Refer to:Base Function Components |
|
| Loose or faulty overtravel limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switch. Refer to: Base Function Components |
Secure or replace loose wire connections. | |
| Motor Control PC Board. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if movement: |
Replace defective Motor Control PC Board. | |
| Back actuator motor. |
Perform Back actuator motor resistance test. Refer to: Back Actuator Motor Resistance Test |
Replace defective motor. Refer to:Back Function Components |
|
| Back actuator. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if no movement: Refer to:Back Actuator Test |
Replace defective Back actuator. Refer to:Back Function Components |
|
| No Back up or Back down, motor is running. | Back actuator motor coupler. |
Inspect motor coupler for damage. Refer to:Back Function Components |
Replace defective motor coupler. |
|
No Back up, Back down OK. |
Foot control malfunctioning. |
If possible, use known working Foot control from another like chair. |
Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to:Foot Control Cord |
Replace faulty Foot control cord. |
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Loose or faulty foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. |
Secure or replace foot control inlet harness connections. |
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|
Back up limit switch. |
On Motor Control PC Board J4 connection, jump grey wires for Back up limit switch. |
Replace defective limit switch. Refer to:Back Function Components |
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|
Loose or faulty Back up limit switch wire connections. |
Check wires connections between Motor Control PC Board and limit switch. |
Secure or replace loose wire connections. |
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|
Motor Control PC Board. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if movement: |
Replace defective Motor Control PC Board. |
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|
Back actuator motor. |
Perform Back actuator motor resistance test. Refer to:Back Actuator Motor Resistance Test |
Replace defective motor. Refer to:Back Function Components |
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|
Back actuator. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if no movement: Refer to:Back Actuator Test |
Replace defective Back actuator. Refer to:Back Function Components |
|
|
No Back down, Back up OK. |
Foot control malfunctioning. |
If possible, use known working Foot control from another like chair. |
Replace faulty Foot control. |
|
Perform Foot control cord test. Refer to:Foot Control Cord |
Replace faulty Foot control cord. |
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Loose or faulty Foot control inlet harness connection. |
Check inlet harness connections at Motor Control PC Board and chair base. |
Secure or replace Foot control inlet harness connections. |
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|
Back down limit switch. |
On Motor Control PC Board J4 connection, jump white wires for Back down limit switch. |
Replace defective limit switch. Refer to:Back Function Components |
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Loose or faulty Back down limit switch wire connections. |
Check wire connections between Motor Control PC Board and limit switch. |
Secure or replace loose wire connections. |
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|
Motor Control PC Board. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if movement: |
Replace defective Motor Control PC board. |
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|
Back actuator motor. |
Perform Back actuator motor resistance test. Refer to:Back Actuator Motor Resistance Test |
Replace defective motor. Refer to:Back Function Components |
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|
Back actuator. |
Move J1 to J2 connector on Motor Control PC Board. Use Base function on controller, if no movement: Refer to:Back Actuator Test |
Replace defective Back actuator. Refer to:Back Function Components |
