Secondhand Plusmed XT-1 PAP Mainboard

Objective AI Report

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Report date: 28.01.2026

Apex Medical XT Series CPAP Device Electronic Main Board Analysis Report

Introduction and Device Identification

The examined visuals belong to a double-sided electronic circuit board (PCB) with green masking, featuring a liquid crystal display (LCD), buttons, and various electronic components. The front side of the board contains the screen and control buttons forming the user interface, while the rear side houses microcontrollers, power transistors, and passive components. Its design and markings indicate that this component is the control and main processing unit of a medical device, specifically a respiratory support device.

Brand and Model Information

The data obtained from a detailed analysis of the texts and codes on the visuals are as follows:

• Brand: Apex Medical Corp. (The inscription “Apex Medical Corp.-060922” is clearly visible on the front side of the board).
• Model/Series Compatibility: XT1 (The code “XT1-V1.00-FR4” on the board confirms that this board is designed for Apex Medical’s “XT” series CPAP devices [e.g., XT I, XT Auto, XT Prime]).

The board is the central management board for this device family.

Technical Codes and Label Information

The following technical data have been identified on the white barcode label on the rear side of the board and on the PCB print:

• Sticker Top Line Code: F677B08-0000
• Sticker Middle Line Code: F677A04-0000 V1.1 (Indicates hardware or software version).
• Sticker Bottom Line Code: 674F08-0000 V1.1
• Date Stamp: 2011/08/23 (The label clearly shows the manufacturing date as August 23, 2011).
• PCB Revision: XT1-V1.00-FR4 (Front Side).
• Manufacturer Code: JS PCB-2 94V-0 (Flammability class and PCB manufacturer standard of the board).
• Quality Control: A green circular label marked “OK” indicates that the board passed factory quality control tests.

Areas of Use and Function

This product is the main control unit for CPAP (Continuous Positive Airway Pressure) devices used in the treatment of Sleep Apnea. It performs the following functions:

• Allows for the adjustment of the device’s pressure settings.
• Displays treatment duration and pressure values to the user via the LCD screen.
• Controls motor speed and heater (and humidifier, if present) functions through electronic components.
• This part is used as a spare part for repairing compatible XT series devices with a faulty screen, non-functional buttons, or electronic malfunctions.

Visual Condition and Assessment

The cosmetic and structural condition of the board can be described as “Good/Clean”. No significant contamination is observed on the board, apart from slight dust accumulation due to use. It is highly probable that it is a “second-hand” or “removed” part, but its physical condition has been preserved.

Physical and Mechanical Examination

• PCB Structure: There are no breaks, cracks, or impact marks on the corners and edges of the board. The mounting holes (screw sockets) are intact.
• Screen: No visible crack, breakage, or darkening (“bleeding”) has been detected on the glass surface of the LCD screen. The ribbon cable solders of the screen appear intact.
• Buttons: There are 4 “Tactile Switches” (S1, S2, S3, S4) on the front side. There is no crushing or missing part in the body structure of the buttons.
• Solder Quality: All component solders appear to be of factory standard. No signs of amateur intervention or re-soldering (repair) are visible.

Electronic Component Analysis

• Capacitors: There are 3 brown electrolytic capacitors at the bottom of the board. Visual inspection revealed no swelling, bulging, or leakage (electrolyte leakage) from the tops or bottoms of these capacitors. This indicates that the power regulation line may be healthy.
• Integrated Circuits: There are no burns, cracks, or heat-induced discoloration on the HOLTEK branded microcontroller and other logic chips on the rear side.
• Transistors (MOSFET): There are 6 power transistors arranged in a row in the bottom right corner. No darkening or heat damage is found around these components.
• Connectors: The pins of the white multi-pin connector in the bottom right corner are straight; no bending or oxidation is visible in the image.
• Empty Pads: The battery holder in the area marked “BAT1” is empty. This is a factory condition rather than a defect, indicating that an internal battery is not used in this version of the board or that the battery is externally connected (Solders are clean; no signs of removal).

Originality and Manufacturing Year

The material quality of the board, Apex Medical corporate prints, “J S PCB” standard codes, and organized component placement prove that the product is a 100% Original Apex Medical spare part. According to the label data, the product’s manufacturing year is 2011.

Potential Failure Risk

No major damage such as breaks, burns, or corrosion (oxidation) that would impede the product’s operation has been detected in the visuals. However, considering that the product is an electronic component manufactured in 2011, the risk of electrolytic capacitors drying out over time should be technically noted as a natural process. Given its visual condition, there is a high probability that it is in working order.