PIONEER PR-8210 TO PR-8210-A CONVERSION
Written and developed by Andrew Hepburn - 25 March 2002
Photos by Marcel Gonzalez
This document will help you transplant parts from a non-working Pioneer PR-8210-A laserdisc player into a working PR-8210 player, to convert it to PR-8210-A. The procedure is fairly simple, and I have done this myself and verified that the modified player works with a Star Rider boardset.
If you are unsure what any of the terms used in this document refer to or do not understand sections of this document, make sure you find out! Do not attempt anything in this document unless you know what you are doing! The information in this document is believed to be correct and works fine for the author. I cannot guarantee that this will work for you and I am not responsible for any damage you may cause to your laserdisc players.
IMPORTANT NOTES BEFORE YOU BEGIN
After removing parts from your PR-8210-A player, it may not be possible to go backwards and put the player back together properly. The reason for this is we will be cutting and removing the power cord from the PR-8210-A player, which could prove very difficult to reattach if you change your mind.
It will be necessary to turn the players upside down several times during this procedure. When turning the players upside down, do so from front to back and not from side to side. (A player should never be up on its side). It could cause the laser assembly to slide downwards due to gravity, possibly causing damage to the player.
The PR-8210 player is missing one hole in its inside metal casing where the wires for the PR-8210-A connector need to go. In order to provide room for these wires, it may be necessary to cut a small section of the back of the PR-8210 player above its back connector plate.
When finished, your new player will have two back connector plates. The regular PR-8210 back connector plate will provide the video and audio as usual, and the PR-8210-A connector plate will be hanging off the back of the player, and only the Centronics connector on it will be functional.
If you want to use your PR-8210 player for multiple games (such as M.A.C.H. 3), you can still use the "remote control" jack on the back of the PR-8210 to control the player.
There will be other important notes listed throughout this document. Please make sure you read them carefully and do not proceed unless you understand what they refer to and the possible damage that could be caused by not following them.
IMPORTANT NOTE ABOUT TESTING THE STAR RIDER BOARDSET
If you are going to be hooking up your Star Rider boardset to a different monitor or test monitor and you need a composite sync signal, you may not be able to tie the h-sync and v-sync directly together from the boardset's monitor output. If you do this, the player will spin up when you turn the game on, but all of the laserdisc player tests will fail, and the game will not start.
After I finished doing this PR-8210 / PR-8210-A conversion, I was testing the boardset and player with a Commodore monitor. Since the monitor took in composite sync, I just tied together the h-sync and v-sync wires. The player would spin up, but the game would not start nor would any player tests work. It appeared as though the game could not find the current frame number. Many weeks later, I was running the boardset through the player tests, and I lifted the boardset to get at something, and one of the sync wires accidentally popped off, and suddenly the laserdisc player tests all started passing. I verified this problem by hooking the sync wires together and taking them apart, each time watching the player tests fail and then start passing again.
Click on the pictures for a larger view.
SECTION A - WORKING ON THE PR-8210-A
The very first thing we will need to do is remove the hinged cover of the PR-8210-A laserdisc player. We do this first because once we remove the power cable we can't turn the player on to open the cover.
Turn on the PR-8210-A and press the reject button so that the cover "pops" open. Lift the cover up. Unplug the player and turn it around so that you are facing the back of the player. There are two hinges holding the cover on the player. Each of these hinges has three screws. Remove the screws so that you can completely remove the cover from the player. IMPORTANT NOTE: The hinges have fairly powerful springs on them and will fly up forcefully as soon as the last screw is removed from one. Make sure you are aware of this while removing the hinge screws.
PART 1 - REMOVING THE PR-8210-A CONNECTOR
Looking at the Centronics connector on the back of the player, you will notice it has a small PCB and three plugs. Make a note of where the plugs are attached so that you can reconnect them later, and then unplug them.
In order to remove the back connector plate from the player, we will need to disconnect the video plug, audio plugs, and the power cable. We will not be removing the Centronics connector from the connector plate.
To remove the power cable, cut the cable on the inside of the player. It may be possible to unsolder the power cable if you want to preserve it; however I found applying any heat to the power cable pins caused them to come out of the power board completely.
PART 2 - REMOVING THE SMALL CONNECTOR PLUG
If you examine the three plugs that were attached to the Centronics connector, two are large and one is small. The small plug should have a black wire and a white wire coming out of it. If you follow these two wires through the inside of the player, you will notice that they are soldered to two places on the large PCB that we lifted up.
The locations on the large PCB where the black and white wires are connected should not have any components. They should just be two pieces of metal going through the PCB.
PART 3 - REMOVING THE "BRAIN" OF THE PR-8210-A
You will see three screws under the ring. Remove these screws. Remove all the other screws you see in the disc section of the player.
The top cover is now ready to come off the player. Start by putting your fingers under the sides of the player, then carefully lift the sides to separate the sides from the player. The front panel of the player is also connected to the top cover by plastic tabs. Carefully remove the front panel from the top cover.
Undo the screws on the cover and take it off.
IMPORTANT NOTE: Now that the board is exposed, examine the board for three plastic pots on the board. You should take great care not to touch these pots. Even brushing them with your hand can cause them to turn. These pots control how the player finds the start and end of a disc.
At the back of the board, you will notice a bunch of wires going through a hole in the metal casing of the player. These wires are for the two large plugs we removed from the Centronics connector. The wires are connected to various places on the board. Carefully pull the wires up through the hole.
The board will also have various other plugs attached to it. Write down the locations of these plugs as we will need to reconnect them later. After that, remove all the plugs.
Undo the screws holding the board to the player, remove it, and place it aside.
Congratulations! We are now finished working with the PR-8210-A. Whatever you do with this player after this is up to you. I recommend saving the player in case you need any parts from it to fix another player.
SECTION B - WORKING ON THE PR-8210
Follow the same preparation instructions as you did for the PR-8210-A. We will need to have the disc cover removed before starting. At all times during this section of the procedure, take great care that you do not accidentally touch or damage the laser lens on the PR-8210, as it will now be exposed. You do not want to end up with two non-working players.
PART 1 - ADDING THE SMALL CONNECTOR PLUG
Lay the two wires through the inside of the player so that the plug is coming out of the player. You may want to secure them to wires that already exist in the player using new wire wraps. This will stop them from moving around in the player and getting caught in other internal electronics.
IMPORTANT NOTE: At this point there are three new plugs coming out of the PR-8210; one small plug and two larger plugs. DO NOT turn on the PR-8210 unless these plugs are attached to the PR-8210-A connector. Doing so will cause the player to fast-forward as soon as it is turned on and start "banging" the laser assembly once it reaches the end and cannot go any further.
Once you have put the top back on the PR-8210 and attached the plugs to the PR-8210-A Centronics connector, turn the player on and play a laserdisc to make sure it is operational. You will now be ready to test the player with your Star Rider boardset!
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