Overview

This describes the process of replacing the 24V Power Supply (PSU) in the FUYL Tower 5 & 15 Pro (MK3).

While relatively simple in the 5 Bay model, replacing the PSU in the 15 Pro is more of an involved process. Both should be undertaken with care and attention to recreating the default cable connections and routing. You may wish to take pictures while removing the original PSU to better document the replacement's positioning.

Warning!

Ensure the locker is completely powered down and disconnected before proceeding with the PSU replacement to avoid electrical hazards.

Requirements

• FUYL Tower 5 or 15 Pro (MK3)
• FUYL Admin keys (Shipped with Tower)
• FUYL Maintenance Screwdriver (Torx T20, shipped with Tower)

Procedure (5 Bay)

1. Unplug the FUYL Locker from its power source and allow it to completely dissipate any stored power (Wait 30 seconds).
2. Open the side door using the Admin keys shipped with the locker.
   
3. Remove the 3 thumb-screws holding the Power Distribution Board (black box) in place, and pull it back and out (no need to disconnect it, this is just to make room)
   
4. Remove the IEC C13 "Jug" cable from the power supply. You may need to hold the nearby ethernet cable out of the way
   
5. Use the supplied screwdriver (or other Torx T20 bit) to unscrew the PSU's secure bracket
   
6. Slide the bracket upwards to allow removal of the PSU
   
7. With the bracket and IEC cable disconnected, rotate and pull the PSU outwards.
8. Trace the remaining cable from the PSU to the splitter at the top of the locker and disconnect it
   
9. Install the new PSU with these steps in reverse order. Ensure proper care is taken to full insert both the IEC C13 cable and the splitter before bringing the locker online again.

Procedure (15 Bay)

1. Unplug the FUYL Locker from its power source and allow it to completely dissipate any stored power (Wait 30 seconds).
2. Open the side door using the Admin keys shipped with the locker.
3. Trace the IEC cable between the PSU and the power distribution board (pictured below) and disconnect it. Remove any cable-ties and ferrite beads/chokes as you proceed, taking note of their locations.
   
4. Trace the remaining 3 cables leading from the PSU to each of the locks and the control door (You will need the Admin key to open), note the cable routing and remove each connector carefully.
   Note: There will be a total of 17 connectors;
   • One for each of the bay lock modules (15)
   • One for the control door
   • One expansion/spare connector (the white connector seen in the picture above)
5. Once the PSU cabling is free, open bays 2 and 4 with their manual override levers:
   
6. There are two screws in each bay, near the back of bays 2 and 4, as pictured below. Remove these screws to free the PSU
7. With the screws removed, gently tilt the PSU to help remove it with the associated cabling from the chassis.
8. Installing the replacement PSU requires performing the same steps in reverse. Note that the cable lengths are measured and should not be under tension when correctly positioned.