Removing 4600 Chassis From Pacman?

NCC-1701

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Time for a new cap kit on an upright Pacman. Can I just remove the K4600 chassis without taking the whole monitor out of the cabinet, seems like there is some sort of bracket that slides back and forth, flyback is mounted off the chassis board, any tips, tricks or cheats would be appreciated, originally I assumed it would be similar to removing a G07 (2) screws, someday I'll learn not to assume.
 
What about one step up from easy lol. I'm by myself this weekend and it looks like pulling the monitor takes four hands.
 
loosen the flyback bottom bolt 1/4" socket then remove the top one. remove the two 1/4" bolts on the left side of the metal plate that holds the chassis to the frame. , discharge the flyback anode suction cup and remove that, then cut the ground wire from the neck board to the monitor tube , remove the neck board and the degauss plug and you re out.

Make sense??? :) the biggest thing is the two screws on the left side and you'll figure everything else out then.
 
Awesome! so if I'm facing the neck board the 2 bolts on the chassis should be on my right on the solder side of the chassis, just want to make sure I'm clear on that part.
 
Awesome! so if I'm facing the neck board the 2 bolts on the chassis should be on my right on the solder side of the chassis, just want to make sure I'm clear on that part.

No, on the parts side. One up front on the left corner and one back on the back left corner. Use an extension and socket to get that one out. Don't forget to pull the yoke wires off the yoke, and cut the degauss wire to the neckboard (reattach it later)...
 
I just fixed a ms.pacman for someone who had a horizontally mounted 4600 in it and wasnt to bad to get out but a bitch to put back in, it sucked getting that first screw put back in just to hold the chassis in place. dont know if it would save time to pull the monitor or mess with just pulling then reinstalling the chassis.
 
you also have to unplug the yoke wires. take note of position, but its marked where they go.

pulling the monitor is far easier than you think. 4 screws hold the two metal rails to the 2 side rails. When you remove the screws, the rails can't move more in, so its safe..

(if it has the the lower metal mount that screws frame to wood pull it first)

Slide it out evenly and avoid the speaker and marquee light wires.
 
Yeah, DEFINATELY remove the monitor first. It's pretty easy really, and after you do it once you'll get the hang of it. You're going to get electromurdered if you try to do it in the cabinet, the flyback is exposed and scary as hell on these things. Better to have it sitting on a bench where you can be careful and not screw anything up.
 
Really.

Really.

Just remove the monitor.

Removing the Pac monitor:


  1. Open back door.
  2. Unplug video and power feeds from monitor. Unclip ground feed.
  3. Open coin door, reach in and up to unclip the control panel latches. Doing this releases the tension the CP has on the bottom edge of the bezel.
  4. Remove bezel retainer bracket. It's an 'L'shaped bracket held on with 3 screws.
  5. Slide the bezel out the back.
  6. From the front of the cab, loosen/remove the 4 mounting bolts holding the montior to the metal side frames attached to the wall of the cab.
  7. Slide the monitor out of the rear of the cab.
Did I miss anything?


Really, you need to remove the 4600 to work on it, because there is a VERY fragile width coil attched to the side of the chassis frame and if you f*ck too much with the frame trying to remove the boards you WILL break the coil. It is an obsolete part and there are NO replacements available. Be careful with it.
 
thanks everyone, decided to go ahead and pull the monitor out in one piece

good choice, the few minutes it takes to unscrew the bolts holding those 'arms' in, will save you 2 hours bitching and cussing trying to put that chassis back into the game with the monitor in it's original position.
 
Did you miss anything?

Hmmm

It always good to discharge a monitor when you pull it out or work on it.

Don't forget to wear shoes, you don't want to be the ground path if a monitor discharges.
 
I thought about that, but the only reason I didn't mention it is because the half dozen or so 4600's I've worked on, none of them showed me a charge on the high voltage probe when i discharged them.
 
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