I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
Text excerpt from page 26 (click to view)
VC-SH990
INSTALLING THE MASTER CAM (AT REAR SIDE OF MECHANISM CHASSIS)
1. Make sure beforehand that the shifter is at the point as shown below. 2. Place the master cam in the position as shown below.
REPLACEMENT OF LOADING MOTOR
� Removal
E ring (XRESJ30-06000) Master cam Apply grease Apply grease
Fully turn clockwise
Fully turn counterclockwise Face the wide tooth side ward No grease
Figure 4-44-1.
Note: See the figure below for the phase matching between the master cam and the casecon drive gear. 3. Finally fix with the E ring.
Master cam
Figure 4-45.
Casecon drive gear
Half-round notch Round mark
� Replacement Remove the loading motor, and install the replacement loading motor as shown below.
10.2 +0.2 mm �0.2
When installing the master cam, align the casecon drive gear round mark with the half-round notch of master cam.
Figure 4-44-2.
Figure 4-46. The loading motor pressing-in must be less than 147 N (15 kgf). Adjust the distance between motor and pulley to 10.2 +0.2 mm).
�0.2
