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There are currently no product reviews.
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The manual was of good quality with high resolution schematic diagrams.
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The manual was very clear and contained all the information I was looking for. My dishwasher is working again because of this servicemanual!
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Quality scan, great manual. I solved my problem with this manual.
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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
TROUBLESHOOTING FLOW CHART
2. SERVO-SYSCON CIRCUIT
A.
Playback picture is not good
Adjust tracking.
Noise appears although adjusting tracking.
NO
Noise appears although change cassette tape.
YES
Check and re-adjust the path of Deck.
YES Is CTL pulse output at pin 97 of IC 601? NO CTL HEAD height is normal and there is not dust? NO Adjust the HEAD height and remove dust. Check circuit adjacent to IC 601
YES The voltage of pin 6 of IC 601 not changing? YES Playback picture Check IC 601 is not good NO
YES
Check R635, C615
3
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