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Great Manual. This manual is available no where else. It was exactly what I was looking for.
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The TEAC A-1500's Service Manual was instrumental in reviving this classic reel-to-reel. Not only does it have the schematics, exploded parts diagram and parts list, it also provided mechanical adjustment information that approximate factory default settings.
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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
MultiPASS MP730/MP700 Chapter 2: Technical Reference
3.2 About the Ink Sensor
onsisting of an LED and photo sensor, the ink sensor uses optical means to detect whether there is ink in the ink tank. At the bottom of the ink tank is an indentation that works like a prism. When there is ink in the ink tank, the refractive index of the ink and the prism's resin material is about the same. Therefore, the reflected amount of light is small. When the ink is exhausted, the refractive index of the air and the prism's resin is very different, so all the light entering the sensor is reflected and the amount of reflected light is high. The ink sensor detects the difference in the reflected light amount to determine whether or not there is ink in the tank. The MPU detects the voltage that changes according to the change in the reflected light amount. The analog value that is input is converted to a digital value by an internal A/D converter. When the machine detects no ink in the ink tank, it starts to count the number of ejected dots corresponding to the amount of ink (about 20% of the ink amount) in the sponge and it starts to detect the no-ink error. This error is detected in the following cases: While the power is ON, when the flatbed ass'y is closed, after the pumping operation, or after the set number of dots have been printed. If the flatbed ass'y is opened during the ink amount measurement, the external light may prevent an accurate measurement. The presence of an ink tank will also not be detected. If there is no ink tank, there will be no reflected light and the machine will therefore assume that there is ink.
Ink Tank Refracted Light Incident Light LED Ink Sensor Ink Air
Reflected Light Incident Light Photo Sensor
Ink Sensor
Inl Present
No Ink
Prism Reflected Light (Completely Reflected)
Figure 2-6 Ink Sensor
Correctly Detecting the Absence of Ink The mechanisms of the product are designed in such a way that the following operations can at times prevent the correct detection of the absence of ink, not printing received images and, as a result, generating a blank output. � While ink is present, the flatbed ass'y is opened, the ink tank is removed, and the flatbed ass'y is closed without putting back the ink tank. � While ink is present, the flatbed ass'y is opened, the ink tank is removed, and the flatbed ass'y is closed after improperly putting back the ink tank (i.e., without hearing a clicking sound). � While ink is present, the flatbed ass'y is opened, and the flatbed ass'y is closed after fitting an ink tank whose ink chamber is empty. 2-8
NOTE
 $4.99 MP700 CANON
Parts Catalog Parts Catalog only. It's available in PDF format. Useful, if Your equipment is broken and You need t…
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