Wall mounted X-ray stands

SEDECAL SG-80: troubleshooting and error codes

The ServiceForge knowledge base holds 23 documented symptoms for the SEDECAL SG-80, with 31 ranked causes, 33 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

Bucky vertical movement not possible patient safety

Bucky cannot move vertically; may be obstructed, unlocked, or power issue

Ranked causes

1. Column stand obstructed by element (common)
2. Power supply is OFF (common)
3. Vertical lock engaged (occasional)
4. Switch malfunction (occasional)
5. Broken chains (rare)

First check

Inspect for obstructions blocking bucky movement

Test point: Column stand path
Expected: Clear of obstructions

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

Bucky does not tilt patient safety

Bucky cannot tilt; power or mechanical issue

Ranked causes

1. Power supply is OFF (common)
2. No power in coil (occasional)
3. Broken cables (occasional)

First check

Verify power supply status

Test point: Wall Stand switch
Expected: ON

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

Auto-tracking does not work during vertical movement

Auto-tracking feature fails while bucky moves vertically

Ranked causes

1. Potentiometer broken (occasional)
2. Service Tool not working properly (occasional)

First check

Test potentiometer condition (automatic and auto-tracking models)

Test point: Potentiometer
Expected: Not broken

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

Auto-tracking does not work when tilting

Auto-tracking feature fails during bucky tilt operation

Ranked causes

1. Potentiometer broken (occasional)
2. Service Tool not working properly (occasional)

First check

Test potentiometer condition

Test point: Potentiometer
Expected: Not broken

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

Angulation lock does not hold or binds (SG120 only)

Angulation lock fails to engage or binds after release, preventing secure angular positioning

Ranked causes

1. Lock hardware misalignment, wear, or damage (occasional)

First check

Release angulation lock button and verify lock engages

Test point: Angulation lock mechanism
Expected: Lock engages and prevents further angulation

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

Angulation lock does not release (SG120 only)

Bucky angulation lock remains engaged after pressing release button behind front panel

Ranked causes

1. Lock board malfunction (unknown)

First check

Press angulation lock push button and verify lock releases

Test point: Angulation lock mechanism
Expected: Lock releases and Bucky tilts freely

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

Bucky carriage does not move easily vertically patient safety

Bucky carriage movement becomes difficult or hard during vertical displacement with power on and electromechanical brake released

Ranked causes

1. Counterweight and bucky carriage not well balanced (unknown)

First check

Verify counterweight and bucky carriage balance

Test point: Bucky carriage vertical motion
Expected: Carriage moves easily in vertical direction

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

Bucky grid does not oscillate

Grid does not oscillate during vertical bucky stand exposure; no audible oscillation sound or vibration

Ranked causes

1. Grid motor or drive mechanism failure (unknown)

First check

Take exposure with vertical bucky stand selected

Test point: Bucky grid assembly
Expected: Grid oscillates with distinct audible sound and visible vibration

Bucky grid shading or objectionable grid lines in film

Radiographic image exhibits grid shading or objectionable grid line artifacts

Ranked causes

1. Improper grid alignment or focal distance setting (common)

First check

Observe exposed film for quality

Test point: Radiographic image
Expected: No shading or objectionable grid line patterns

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

Bucky rotation direction incorrect (SG120 only) patient safety

Bucky rotates in wrong direction compared to standard configuration (left or right hand dependent)

Ranked causes

1. Rotation limit screw positioned at wrong microswitch (occasional)

First check

Check bucky rotation direction against Illustration 4-1

Test point: Bucky rotation
Expected: Rotation direction matches system configuration

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

Bucky rotation lock does not engage (SG120 only)

Rotation lock lever fails to prevent Bucky rotation after lever is applied

Ranked causes

1. Rotation lock hardware misalignment, wear, or damage (occasional)

First check

Release rotation lock lever and verify Bucky rotates 0° to 180°

Test point: Rotation lock lever
Expected: Bucky rotates easily from 0° (upright) to 180° (upside down)

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

Bucky voltage mismatch with generator high voltage

Bucky control board voltage setting does not match generator voltage supply

Ranked causes

1. Bucky factory set to 115VAC, generator supplies different voltage (occasional)

First check

Verify Bucky voltage setting matches generator

Test point: Bucky control board configuration
Expected: Bucky voltage matches generator voltage (115VAC or 230VAC)

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

Carriage motion not smooth or jerky

Vertical carriage does not move smoothly, exhibits stiff or binding motion

Ranked causes

1. Incorrect counterweight installation or imbalance (common)

First check

Inspect counterweight installation

Test point: Counterweight assembly
Expected: Counterweights correctly installed and trimcovers in place

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

Carriage remains locked when electromechanical lock released

Vertical carriage does not move freely after releasing the vertical lock handle with power on

Ranked causes

1. Lock board not feeding electromechanical lock correctly (unknown)

First check

Verify carriage moves freely and smoothly over entire range

Test point: Carriage travel
Expected: Free and smooth motion with minimum side-play

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

Carriage suddenly becomes difficult or hard to move vertically caution

Vertical carriage motion abruptly becomes stiff or requires excessive force during operation

Ranked causes

1. Unknown mechanical binding or failure (unknown)

First check

Monitor carriage movement difficulty

Test point: Carriage vertical motion
Expected: Smooth consistent movement without sudden resistance

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

Equipment instability during standing or movement patient safety

Risk of tipping or unbalancing the SG80/120 stand during setup or repositioning

Ranked causes

1. Insufficient personnel for equipment handling (common)

First check

Verify personnel count

Test point: standing area
Expected: minimum two people present

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

Microswitch S1 not actuated when Bucky within 10° vertical

Microswitch S1 fails to trigger when Bucky is within 10° of vertical position

Ranked causes

1. Microswitch S1 misalignment or mechanical failure (occasional)

First check

Position Bucky within 10° of vertical and verify S1 actuation

Test point: Microswitch S1
Expected: Microswitch S1 actuated

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

Microswitch S2-1 not actuated at Bucky 0° position (SG120 only)

Microswitch S2-1 does not trigger when Bucky is at 0° (upright) position

Ranked causes

1. Microswitch S2-1 misalignment or mechanical failure (occasional)

First check

Position Bucky at 0° and verify microswitch S2-1 actuation

Test point: Microswitch S2-1
Expected: Microswitch S2-1 actuated

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

Microswitch S2-2 not actuated at Bucky 180° position (SG120 only)

Microswitch S2-2 does not trigger when Bucky is at 180° (inverted) position

Ranked causes

1. Microswitch S2-2 misalignment or mechanical failure (occasional)

First check

Position Bucky at 180° and verify microswitch S2-2 actuation

Test point: Microswitch S2-2
Expected: Microswitch S2-2 actuated

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

Microswitch S3 not actuated when Bucky within 10° horizontal

Microswitch S3 fails to trigger when Bucky is within 10° of horizontal position

Ranked causes

1. Microswitch S3 misalignment or mechanical failure (occasional)

First check

Position Bucky within 10° of horizontal and verify S3 actuation

Test point: Microswitch S3
Expected: Microswitch S3 actuated

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

Microswitch S4 not actuated at near vertical SID point (SG120 only)

Microswitch S4 does not trigger when Bucky is raised to near vertical SID point

Ranked causes

1. Microswitch S4 misalignment or mechanical failure (occasional)

First check

Raise Bucky and verify S4 actuation at near vertical SID point

Test point: Microswitch S4
Expected: Microswitch S4 actuated when Bucky front panel is at table height

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

Microswitch S5 not actuated at far vertical SID point (SG120 only)

Microswitch S5 does not trigger when Bucky is at far vertical SID point after rotating to 0° and angulating 90°

Ranked causes

1. Microswitch S5 misalignment or mechanical failure (occasional)

First check

Rotate Bucky to 0° and angulate 90° (horizontal), verify S5 actuation

Test point: Microswitch S5
Expected: Microswitch S5 actuated at far vertical SID point

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

Pulley chains off sprockets after unpacking caution

Top cover removed during setup reveals pulley chains not seated on sprockets

Ranked causes

1. Chains displaced during shipping (occasional)

First check

Inspect pulley chain seating

Test point: pulley sprockets
Expected: chains seated fully on sprockets

1 corrective action 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.