Endoscope cleaning aids · Scope Buddy Plus family

Medivators Scope Buddy Plus: troubleshooting and error codes

The ServiceForge knowledge base holds 26 documented symptoms for the Medivators Scope Buddy Plus, with 51 ranked causes, 37 diagnostic checks with test points and expected values, and 6 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

External peristaltic pump does not operate or operates intermittently

During aspiration, flushing, air purge, or rinsing steps the external peristaltic pump does not operate, operates intermittently, or the Play button is grayed out even though pump head lever is fully right

Ranked causes

1. Incorrect or damaged pump tube (common)
2. Pump tube not properly installed (common)
3. Pump head lever not fully closed (common)
4. Pump Head Sensor contaminated or damaged (occasional)
5. Motor Controller Board alarm condition (PWR/ALM LED indicates error) (occasional)
6. Overheat alarm (2 LED flashes) (occasional)
7. Overvoltage alarm (3 LED flashes) (occasional)
8. Overcurrent alarm (5 LED flashes) (occasional)
9. EPROM error (9 LED flashes) (rare)
10. CPU error (LED lit continuously) (rare)

First check

Verify correct pump tube and condition

Test point: Pump Tube
Expected: Correct type and good condition

5 more checks with pass and fail actions, 14 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Attention: Low detergent level

Attention Low Detergent Level Screen displayed during dosing, generally indicating empty detergent bottle but may indicate other issues

Ranked causes

1. Detergent bottle is empty (common)
2. Detergent In Tube perforated, blocked, or improperly attached (common)
3. Dosing Pump Assembly failure (occasional)
4. Mixing Valve Assembly failure (occasional)

First check

Detergent bottle level

Test point: Detergent container
Expected: Detergent present

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

No detergent dosing to clean container

Detergent is not being dispensed when dosing to the clean container is selected

Ranked causes

1. Diverting Valve not directing flow to clean container (common)
2. Internal leaks (occasional)
3. Dosing Pump Assembly failure (occasional)
4. Mixing Valve Assembly failure (Attention Low Detergent Level) (occasional)

First check

Verify Diverting Valve directing flow to clean container

Test point: Detergent Out Port
Expected: No detergent exiting from Detergent Out Port during clean container dosing

3 more checks with pass and fail actions, 11 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No detergent dosing to sink

Detergent is not being dispensed when dosing to the sink is selected

Ranked causes

1. Diverting Valve not directing flow to sink (common)
2. Internal leaks (occasional)
3. Dosing Pump Assembly failure (occasional)
4. Mixing Valve Assembly failure (Attention Low Detergent Level) (occasional)

First check

Verify Diverting Valve directing flow to sink

Test point: Auxiliary Detergent Out Port
Expected: No detergent exiting from Auxiliary Detergent Out Port during sink dosing

3 more checks with pass and fail actions, 11 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power on

ON light does not illuminate when Power Switch is pressed and held for at least 5 seconds

Ranked causes

1. Power Adapter not functioning (common)
2. DC Input Harness failure (occasional)
3. Power Switch failure (occasional)
4. Controller Board Assembly failure (rare)

First check

Power Adapter indicator LED illuminated

Test point: Power Adapter LED
Expected: LED illuminated

3 more checks with pass and fail actions, 14 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pump running but fluid not exiting endoscope

External pump operates normally but detergent/flush solution does not flow through endoscope channels

Ranked causes

1. Pump tube not connected or reversed (common)
2. Strainer blocked or submerged incorrectly (common)
3. Endoscope channels blocked (occasional)

First check

Verify pump tube luer connector attachment

Test point: Detergent Out Port on front of device
Expected: Pump tube luer connector properly seated and connected

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

Temperature sensor malfunction warning displayed

Warning screen alerts user of faulty temperature sensor; very cold or hot water may trigger warning

Ranked causes

1. Solution temperature outside acceptable range (common)
2. Faulty temperature probe (occasional)
3. Faulty controller board (rare)

First check

Measure actual solution temperature and compare to acceptable range

Test point: Sink and clean container solution
Expected: Within temperature range specified in Settings screen
Tools: Calibrated thermometer

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

Attention: Output blocked

Attention Output Blocked Screen displayed during dosing to sink, indicating outlet issue

Ranked causes

1. Blockage in Pump Tube (common)

First check

Pump Tube for blockage

Test point: Pump Tube
Expected: No blockages

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Attention: Output blocked (clean container dosing)

Attention Output Blocked Screen displayed during dosing to clean container, indicating outlet issue

Ranked causes

1. Blockage in Auxiliary Detergent Out Tube (common)

First check

Auxiliary Detergent Out Tube for blockage

Test point: Auxiliary Detergent Out Tube
Expected: No blockages

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Attention: Temperature out of range patient safety

Attention message appears if sink solution, clean container solution, or both is out of the temperature range entered in Settings

Ranked causes

1. Solution temperature out of specified range (common)

First check

Sink and clean container solution temperatures

Test point: Temperature Probe sensors (Sink and Container)
Expected: Within specified range set in Settings (default 20ºC to 35ºC / 68ºF to 95ºF for INTERCEPT detergent), 20ºC to 35ºC (default)
Tools: Temperature Probe

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Attention: Temperature sensor not detected

Attention screen alerts user that the temperature probe is not connected to the device

Ranked causes

1. Temperature probe not connected (common)

First check

Temperature probe connection

Test point: Temperature Probe port
Expected: Probe connected and detected

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Dosing pump verification

Daily verification that dosing pump delivers correct detergent volume within specification (18-22 mL for 20 mL setpoint).

Ranked causes

1. Dosing pump out of calibration (unknown)

First check

Ensure pump tube is installed and empty (air purge)

Test point: Pump tube
Expected: Empty

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

Calibration: Dosing Verification

Daily check to verify detergent dosing is correct; performed at start of each day after device power-on

Ranked causes

1. Detergent dosing out of specification (unknown)

First check

Perform Dosing Verification

Test point: Device dosing output
Expected: Dosing verification passes

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Encoder board error warning displayed

Warning indicates system detected erroneous encoder board reading

Ranked causes

1. Encoder board malfunction or error (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

External pump stalling during operation

External peristaltic pump stops or stalls unexpectedly during cycle

Ranked causes

1. Pump tube mispositioned or obstructed (common)

First check

Verify pump tube position in pump head

Test point: Pump head and tube assembly
Expected: Pump tube properly positioned with strainer submerged and not pinched

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

Incorrect dosing

Scope Buddy Plus does not dose an acceptable amount even after Dosing Calibration and Verification Procedures

Ranked causes

1. Obstructed or perforated tubing (common)

First check

Inspect Pump Tube for obstructions or perforations

Test point: Pump Tube
Expected: No obstructions or perforations visible

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

Low detergent level warning displayed

Warning alerts user when dosing motor fails to prime or pressure in dosing tubing becomes low during detergent dispensing

Ranked causes

1. Detergent jug empty or detergent tube not reaching bottom (common)

First check

Verify detergent in tube position and tube connections

Test point: Detergent jug and detergent in tube assembly
Expected: Detergent In Tube reaching bottom of detergent jug; all tubes properly connected to device

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Motor error warning displayed

Warning indicates unexpected error with external flushing pump

Ranked causes

1. Pump tube mispositioned (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Output blocked warning displayed patient safety

Warning indicates pressure in tubing reached unsafe level of 23 PSI or higher; possible blockage in multi-use tubing or endoscope channels

Ranked causes

1. Blockage in 24-Hour Multi-Use tubing or endoscope channels (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Output restricted attention screen displayed

Machine detects restricted flow but not complete blockage; pump speed automatically decreased

Ranked causes

1. Partially restricted tubing or endoscope channel (common)

Pressure sensor malfunction warning displayed

Warning indicates faulty pressure sensor located inside device that measures pump tube pressure

Ranked causes

1. Defective pressure sensor (rare)

Pressure sensor offset warning displayed

Warning indicates pressure sensor showing greater than ±1 PSI when machine is idle; suggests defective pressure sensor

Ranked causes

1. Defective pressure sensor (occasional)

Temperature sensor not detected warning displayed

Warning alerts user that temperature probe is not connected to device

Ranked causes

1. Temperature probe disconnected or not inserted (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Touch screen freezes or responds very slowly

Screen input unresponsive or delayed response to button presses

Ranked causes

1. Software hang or processing delay (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Touch screen turns black

Display goes black with no visible content

Ranked causes

1. Screen in sleep mode after inactivity (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power off when power button held down 10 seconds

Device continues running when power button pressed and held for minimum 10 seconds

Ranked causes

1. Power control circuit malfunction (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`2 (LED flashes)`	Overheat alarm	Temperature of driver circuit board reached 85 °C (185 °F)	warning
`3 (LED flashes)`	Overvoltage alarm	Pump head jammed	error
`5 (LED flashes)`	Overcurrent alarm	Excessive current through motor output circuit	error
`9 (LED flashes)`	EPROM error	Stored data was damaged	critical
`Continuous (LED lit continuously)`	CPU error	CPU malfunction	critical
`Dosing output out of range`	Measured detergent volume is less than 18 mL or greater than 22 mL for a 20 mL setpoint	Dosing verification test yields output outside 18-22 mL range	error

Likely causes and actions for each code 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.