Hospital beds

Stryker 4701: troubleshooting and error codes

The ServiceForge knowledge base holds 17 documented symptoms for the Stryker 4701, with 39 ranked causes, 47 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

No power caution

Bed does not receive power; no lights or control response

Ranked causes

1. Power cord not plugged into hospital grade outlet (common)
2. Circuit breaker is tripped (common)
3. Low voltage or no voltage at power supply or CPU board (occasional)
4. Check DC voltages at power supply (unknown)
5. Isolate fault to component or cable (unknown)
6. Verify AC power at CPU board (unknown)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot down motion not working caution

Foot section will not move downward

Ranked causes

1. Potentiometer limits were reset (common)
2. CPU board not providing control signal (occasional)
3. Siderail board or cabling fault (occasional)
4. Foot power board connection fault (occasional)
5. Foot power board failure (occasional)

First check

Check 5 VDC at CPU board during foot down command

Test point: J32 (Z) on CPU board, pin 1 black to pin 5 orange
Expected: 5 VDC
Tools: DMM

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot up motion not working caution

Foot section will not move upward

Ranked causes

1. Potentiometer limits were reset (common)
2. CPU board not providing control signal (occasional)
3. Siderail board or cabling fault (occasional)
4. Foot power board connection fault (occasional)
5. Foot power board motor supply failure (occasional)

First check

Check 5 VDC at CPU board during foot up command

Test point: J32 (Z) on CPU board, pin 1 black to pin 4 green
Expected: 5 VDC
Tools: DMM

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Bed down motion not working caution

Bed will not move in downward direction when button is pressed

Ranked causes

1. Two-pin shunt missing from connector Z (common)
2. Potentiometer limits were reset (occasional)
3. Low or no voltage to down motion circuit (occasional)

First check

Enter Diagnostics and test bed down motion with shunt installed

Test point: Connector Z pins 1 and 2
Expected: Motion occurs

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Low or no supply voltage high voltage

Insufficient AC or DC voltage detected at power supply or CPU board connectors

Ranked causes

1. Power supply fault or no voltage input (common)
2. CPU board fault or damaged connector W (occasional)
3. Load short circuit on power rails (occasional)

First check

Verify AC input voltage at power supply

Test point: J1 pins 1 and 2 on power supply
Expected: 120 VAC
Tools: DMM

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Bed up motion not working caution

Bed will not move in upward direction when button is pressed

Ranked causes

1. Potentiometer limits were reset (common)
2. Low or no voltage to up motion circuit (occasional)

First check

Check 5 VDC control signal during bed up command

Test point: TP 9 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fowler down motion not working caution

Fowler back rest will not move downward

Ranked causes

1. Potentiometer limits were reset (common)
2. Low or no voltage to Fowler down circuit (occasional)

First check

Check 5 VDC control signal during Fowler down command

Test point: TP 5 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fowler up motion not working caution

Fowler back rest will not move upward

Ranked causes

1. Potentiometer limits were reset (common)
2. Low or no voltage to Fowler up circuit (occasional)

First check

Check 5 VDC control signal during Fowler up command

Test point: TP 6 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Lumbar does not get firm

Lumbar cushion firmness not increasing when firm button pressed

Ranked causes

1. Compressor not running (common)
2. Low or no voltage to lumbar firm circuit (occasional)

First check

Check 5 VDC at CPU board during lumbar firm command

Test point: J32 (Z) on CPU board, pin 1 black to pin 8 red/black
Expected: 5 VDC
Tools: DMM

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power on high voltage

No power to the bed unit

Ranked causes

1. Power cord not plugged into hospital grade wall outlet (common)
2. Circuit breaker is tripped (common)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Level/reverse Trendelenburg motion not working caution

Bed will not level or tilt with head higher than feet

Ranked causes

1. Low or no voltage to level motion circuit (common)

First check

Check 5 VDC control signal during level command

Test point: TP 4 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Lumbar does not get soft

Lumbar cushion firmness not decreasing when soft button pressed

Ranked causes

1. Low or no voltage to lumbar soft circuit (common)

First check

Check 5 VDC at CPU board during lumbar soft command

Test point: J32 (Z) on CPU board, pin 1 black to pin 7 white/black
Expected: 5 VDC
Tools: DMM

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Seat does not get firm

Seat does not achieve firmness when seat firm button pressed; operator cannot get firm lumbar support.

Ranked causes

1. Low voltage or no voltage at control circuits (common)

First check

Verify 5 VDC control signal present

Test point: J32 (Z) pin 1 black and pin 10 orange/black
Expected: 5 VDC when seat firm button pressed
Tools: DMM

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Seat does not get soft

Seat does not achieve softness when seat soft button pressed; operator cannot get soft lumbar support.

Ranked causes

1. Low voltage or no voltage at control circuits (common)

First check

Verify 5 VDC control signal present

Test point: J32 (Z) pin 1 black and pin 9 green/black
Expected: 5 VDC when seat soft button pressed
Tools: DMM

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Skoocher in motion not working caution

Bed will not move toward head

Ranked causes

1. Low or no voltage to Skoocher in circuit (common)

First check

Check 5 VDC control signal during Skoocher in command

Test point: TP 8 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Skoocher out motion not working caution

Bed will not move toward foot

Ranked causes

1. Low or no voltage to Skoocher out circuit (common)

First check

Check 5 VDC control signal during Skoocher out command

Test point: TP 7 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Trendelenburg motion not working caution

Bed will not tilt with head lower than feet

Ranked causes

1. Low or no voltage to Trendelenburg circuit (common)

First check

Check 5 VDC control signal during Trendelenburg command

Test point: TP 4 on CPU board, reference ground test point
Expected: 5 VDC
Tools: DMM

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.