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Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
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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/
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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!
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It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
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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.
CHAPTER 2
C. Paper Jam Detection The following paper sensors are installed to detect whether the paper is present or not and whether the paper is fed normally or not. � Reversed paper sensor (PS703) � Duplexing unit pick-up sensor (PS701) The microprocessor (CPU) determines whether paper is jammed or not by checking whether paper is present or absent at the sensors at check timing stored in the memory. If the CPU determines that a jam has occurred, it stops duplex feeding and notifies the jam occurrence to the engine controller. 1. Pick-up delay jam The CPU assesses a pick-up delay jam if the pre-feed sensor (PS102) does not detect the leading edge of the paper within the prescribed period of time (about 2 sec.) after the paper was picked up, or if the top of page sensor (PS103) does not detect the leading edge of the paper within the prescribed period of time after the start of duplex pick-up. 2. Reverse delay jam The CPU assesses a reverse delay jam if the reversed paper sensor (PS703) does not detect the leading edge of the paper within the prescribe time (about 2.2 sec.) after the fixing unit delivery sensor 1 (PS501) detects the leading edge of the paper. 3. Reverse stationary jam The CPU assesses a reverse stationary jam if the reversed paper sensor (PS703) does not detect the trailing edge of the reversed paper within the prescribed period of time (about 4.2 sec.) after detecting the leading edge. 4. Duplexing unit pick-up delay jam The CPU assesses a duplex pick-up delay jam if the duplexing unit pick-up sensor (PS701) does not detect the leading edge of the paper within the prescribed period of time (about 1.5 sec.) after the reversing is completed. 5. Duplexing unit pick-up stationary jam The CPU assesses a duplex pick-up stationary jam if the duplexing unit pick-up sensor (PS701) does not detect the trailing edge of the paper within the prescribed period of time (about 4.3 sec.) after the duplexing unit pick-up starts.
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