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There are currently no product reviews.
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Everything in the manual was excellent except for a couple of pictures of specific areas in the unit that were a little dark. Owners Manuals re-sent the pdf file & the problem was corrected. Excellent product! George
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Thanks for offering this item at such a good price. Proved handy in identifying the part I was looking for my set.
Thanks again.
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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
5-2. Print is Too Dark or Too Light
START
Is reference voltage input to pin 2 of IC6 on MA-99 board when �CONTRAST� is set to center position? YES
NO
Peripheral circuits Q200 and Q16 on MA-99 board are defective.
Is reference voltage input to pin 5 of Q7 on MA-99 board when �BRIGHT� is set to center position? YES NO
Peripheral circuits Q16 and RV6 on MA-99 board are defective.
Is voltage (approx. 1.5 to 2.5 V) available at pin 6 of IC304 on MA-99 board when head is at the normal temperature? YES
Peripheral circuit IC401 and pins 29 and 30 of CN9 NO on MA-99 board, or the thermistor in the head are defective.
Are required voltages available at each terminal, 3 V at pin 19 of IC500 on MA-99 board, and 1 V at pin 23 of IC500? YES
Peripheral circuit Q21 on MA-99 board is defective. NO
The head voltage or CN9 on MA-99 board is defective. Is density of stair step printed in test mode properly? NO
YES
The data buses of IC500 and IC503 on MA-99 board are defective.
5-2
UP-895/(E)
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