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There are currently no product reviews.
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Good quality, the manual help me to repair the echo/reverb section
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A good service manual with lots of info and a very fair price
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Great value, good scan, just as expected, everything that you need.
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Good scan, great price, but almost the same with the SV260 service manual.
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This PDF is very comprehensive. It includes drawings, parts lists, schematics, pictures, PCB drawings, mechanical layouts, etc. for all three stackable equipment. The scans are good too. Easy to read and no smudges or black lines. I have no complaints. I will make this site my first stop for finding my service manuals.
XR-A550MD
¶ Disc loading is incorrect
Is disc loaded when it is inserted? NO Is Pin 4 of CN1601 set to "L"? YES Does either Pin 23 or 24 of IC1601 change? YES NO NO Check IC1401. NO Check CN1601 and SW1956. YES
Does either Pin 30 or 31 of IC1601 change? YES Check the CN1604.
NO
Check CN1604 and IC1601.
YES Does the system eject when the MD removal button is pressed? YES The disc table retracts after ejection is completed. YES Check CN1601 and SW1956. NO
¶ The system does not playback
The system play back neither reflection discs. NO The system does not playback only high-reflection discs. YES Is Pin 93 of IC1401 set to 1.02V±0.3V in Test mode, with high-reflection disc inserted? NO YES YES NO YES Go to "CHECKING BY TEST MODE". NO The system does not play back only low-reflection discs. YES Is Pin 93 of IC1401 set to 2.06V±0.3V (recording possible), 3.2V±0.3V (recording prohibit) with low-reflection disc inserted?
Go to "NORMAL PLAYBACK" after readjustment.
Check SW1951/SW1952, MD MECHA SW Assy and CN1601.
105
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