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Install - UAV & AC in the 5200


Bryan

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Recommended board: Plug-In (if 4050 soldered in)

The 5200 may either have soldered or socketed 4050. This will affect the procedure somewhat so we'll start with instructions for a soldered in 4050:

Position the main PCB with the cartridge slot toward the back.

Soldered-in 4050:

1. Solder the 16-pin socket on top of the 4050. It is only necessary to solder pins 1, 3, 5, 7, 8, 9 and 11. Soldering pin 16 is probably a good idea as well just to secure all corners of the socket. With a reasonably small iron tip, you should be able to work between the 4050 and the Antic chip behind it.
2. Connect a wire to the front pad of R17. This is the rightmost 1K resistor in front of the 4050. This will be the Color In wire.
3. Make sure the jumpers are configured for the 5200 and install the UAV in the socket with the green terminal toward the back.
4. Connect the Color-In wire to terminal 1 (the terminal closest to the right back corner). Make sure the wire is clamped in securely.
5. Attach your video cables to the UAV. The remaining terminals (2-6) are Ground, Chroma, Luma, Composite, and a 2nd Ground.

Socketed 4050:
I am currently revising this section as the 4050 is necessary to retain the reset hardware and the jumper method isn't reliable enough.

Removing the 4050 to plug in the UAV will disable the RF video. If this isn't a problem, then follow these steps:

1. Remove the 4050.
2. Connect a wire to the front pad of R17. This is the rightmost 1K resistor in front of the 4050. This will be the Color In wire.
3. Make sure the jumpers are configured for the 5200 and install the UAV in the socket with the green terminal toward the back.
4. Connect the Color-In wire to terminal 1 (the terminal closest to the right back corner). Make sure the wire is clamped in securely.
5. Solder a jumper across the back pads of R2 and R3 (only do this if the 4050 is removed!)
6. Attach your video cables to the UAV. The remaining terminals (2-6) are Ground, Chroma, Luma, Composite, and a 2nd Ground.

If you wish to retain RF video, then you'll need to keep the 4050. However, soldering a socket on top of the 4050 will raise the UAV up too high to replace the shielding which is necessary for decent RF performance. For this reason, it is preferable to get a Kit and build the UAV according to This post and then follow the instructions above (skipping step 5).

Installing an Audio Companion board:


1. Locate C37 and solder the Audio Companion board across its leads with ground (G) toward the front. Apply the soldering iron to both the capacitor lead and the large pads at the bottom of the board while applying solder until they flow together. This will provide power and hold the AC in place.
2. Solder a wire from input iA (the first pad at the top from the back) to the back pad of R50 (1K). This resistor is just inside the shield area in front of where the AC is now installed.
3. Connect the audio out wire to the last pad on the Audio Companion marked out. If you're using a coaxial wire, you can connect ground to the back pad of the capacitor in front of C37 (C51) or any other nearby grounded spot like the exposed shield strip.

Carefully check your work against the pictures before powering the system. Route cables carefully out of the shielding during reassembly.

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