Atari SUPER SPRINT - Removing the Video Display

Maintenance
Super Sprint
- NOTE -
If the Video PCB has already been removed,
disconnect the harness connectors from the
left edge of the CPU PCB, then remove the
two thumb nuts holding the top of the CPU
PCB to the ground plane. Remove the CPU
PCB.
1. Turn the game power off.
2. Unlock and open the lower rear access panel.
3. Remove the four thumb nuts holding the EMI cover
to the ground plane.
4. Disconnect the harness connectors from the left
edge of the CPU PCB.
5. Remove the four thumb nuts holding the CPU PCB
(and the top of the Video PCB) to the ground plane.
6. Gently disconnect the CPU PCB from the Video
PCB.
7. Replace the CPU PCB by first connecting the CPU
PCB to the Video PCB edge connector. Carefully po¬
sition both the CPU and the Video PCBs so that the
holes (in the bottom of the CPU PCB and at the top
of the Video PCB) are aligned. Partially install one
thumb nut and spacer through both of the PCBs and
into the corresponding ground plane post.
8. Install and tighten the two thumb nuts holding the
top of the Video PCB to the ground plane.
9. Install the remaining thumb nut holding the bottom
of the CPU PCB (and the top of the Video PCB) to
the ground plane.
10. Finger-tighten both thumb nuts holding the bottom
of the CPU PCB (and the top of the Video PCB) to
the ground plane.
11. Connect the harness connectors to the left edge of
the CPU PCB. (See Figure 4-3 for the proper connec¬
tor locations.)
Removing the Video Display
Perform the following procedure to remove/replace the
video display. (See Figure 4-4.)
1. Turn the game power off and wait two minutes. Un¬
plug the power cord.
2. Using a 1/8-inch hex driver, remove the three screws
holding the upper retainer to the cabinet. Remove the
retainer.
3. Remove the video display shield and the display bezel.
4. Using a Phillips screwdriver, remove the four screws
holding the service door to the cabinet.
-A-WARNING -A-
High Voltage
The video display contains lethal high volt¬
ages. To avoid injury, do not attempt to ser¬
vice this display until you observe all precau¬
tions necessary for working on high-voltage
equipment.
X-Radiation
The video display has been designed to min¬
imize X-radiation, However, to avoid possible
exposure to soft X-radiation, never modify
the high-voltage circuitry.
Implosion Hazard
The cathode-ray tube may implode if struck
or dropped. Shattered glass may cause injury
within a 6-foot radius. Use care when han¬
dling the display.
5. Discharge the high-voltage from the cathode-ray tube
(CRT) before proceeding. The display assembly con¬
tains a circuit for discharging the high voltage to
ground when power is removed. However, to make
certain, always discharge the display as follows.
a. Attach one end of a large, well-insulated, 18-gauge
jumper wire to ground.
b. Momentarily touch the free end of the grounded
jumper to the CRT anode by sliding it under the
anode cap.
c. Wait two minutes, and repeat part b.
6. From the back of the cabinet, unplug the display har¬
ness connectors from the display.
-A -WARNING- A -
To avoid dropping the video display, use ex¬
treme care when removing the display from
the cabinet. We recommend that a second
person carefully hold the display chassis from
the back of the cabinet while the other person
lifts it from the front of the cabinet.
7. Using a 5/32-inch Mien wrench, reach through the
front of the display enclosure, and remove the four
screws and washers holding the video display to the
display enclosure base.
8. Carefully slide the display out through the front of the
cabinet.
9. Replace the video display as described in the following
procedure.
-NOTE---—-
Whenever the cathode-ray tube is replaced,
readjust the brightness, size, centering, purity,
and convergence as described in the display
manual.
4-8