Airox Legendair CPU Board Replacement
Mariana Inofuentes and 2 other contributors
Last updated on Oct 16, 2022
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Introduction
Go to step 1 ↓Introduction
When technical difficulties cannot be resolved by troubleshooting guide and the CPU board is the source of malfunction, a replacement of the CPU board may be necessary. This guide will provide the step-by-step instructions to replace the CPU board.
The repair guide information is mentioned in following sections of the user repair manual:
· Chapter 2 – 2.1.1 Cleaning the Device
· Chapter 2 – 2.4.1 Opening and Closing
· Chapter 5 - 1.1-4 Corrective Maintenance
· Chapter 5 - 2.1 Corrective Maintenance Section
What you need
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Using a cloth or a sponge slightly dampened with a bactericide or germicide solution, gently clean the outside of the device.
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If necessary, spray the device lightly with the germicide solution, taking account of the requirements discussed in the preliminary operations.
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Put the device in a clean and open environment & open the device by removing the five attachment screws (Pl1.20) on the bottom casing side (Pl1-280). Lift the top outer panel away to expose the inside of the device.
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Disconnect all connectors as follows: Pl1.J3.CPU, Pl1.J2.CPU, Pl1.J8.CPU, Pl1.J1.CPU, Pl1.J5.CPU, and Pl1.J7.CPU of the CPU board.
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Extract the board from its housing and uncouple the exposed set of air tubes (Pl3-130 and Pl3-140).
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Replace the current CPU board (Pl1-120) with new CPU board and gently put back the set of air tubes as they were first found (Pl3-130 and Pl3-140).
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Position the new board within its housing and pre-position the three attachment screws (Pl1-130) taken out in Step 4. Validate the position of the board and finish tightening (Torque 5 Nm max).
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Ask FixBot
To reassemble your device, follow these instructions in reverse order.
Note: If forgotten, these are the following positions of the connectors: Pl1.J3.CPU with the Alarm Reminder strand, Pl1.J2.CPU with the RS232 strand, Pl1.J8.CPU with the FiO2 strand, Pl1.J5.CPU with the Power Supply strand, Pl1.J7.CPU connected to Pl1.J2.CT, Pl1.J1.CPU with the piezo solenoid valve strand.
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Team
Cal Poly, Team S7-G15, Paton Spring 2020 Member of Cal Poly, Team S7-G15, Paton Spring 2020
CPSU-PATON-S20S7G15
3 Members
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