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.
Text excerpt from page 26 (click to view)
Press the CANCEL button and the normal TV programme will return with the Teletext page Header superimposed for 5 seconds. At the selected alarm time, the alarm page header will re-appear. This page remains stored in the memory until the TP-OFF command is pressed. TP-OFF HOLD Cancels TP-ON
- To retain the page selected. Hold will appear written in green at the top right hand side of,the screen. To cancel the command press TEXT - MIX - TP-OFF - CANCEL. Displays the top half of the page in large characters.
TOP BOTTOM
- Displays the bottom half of the page in large characters. Commands TEXT - HOLD - TP-ON - TP-OFF restore the mode into the upper half page. - Restores the character size to normal. - This command suppresses the TEXT display, restores Video picture while the system remains in Teletext mode, giving the possibility of selecting:
- Pages - using TP-ON
FULL CANCEL
- Alarm pages - TEXT and MIX will cancel the command. PICTURE 1 -10 Returns to TV picture from Teletext mode. Numbered keys (l-O/10) serve to select pages (3 digits) time (4 digits). If figures are incorrectly entered, the full sequence must be completed before re-entering correct figures. If in Video mode, the Station identity will be displayed for 5 seconds. In the Teletext mode, the page number is replaced by the station identity for 5 seconds.
