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There are currently no product reviews.
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It was helpful to get schematic with waveforms in important points and lot of service information. Manual is good quality, fast delivered. Of course it is hardcopy of paper one with all its disadvantages.
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I want to give you a real heads-up for your desire to enable such people as I to acquire the information I need to maintain the older types of equipment such as this Akai HXA351W. You do a swell job with all the processes you have to perform so I can have a legible, thus usable
document which does not send me crazy trying to figure out the blurry text of a bad copy.
Very well done, Thomas.
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This manual is very well presented and after printing out looks about as close to an original as I think you can get. The quality is second to none.
The content of the manual is comprehensive and I think it would be well suited to an audio repair professional which I'm not but I did find it very informative and helpful.
The cost of the manual is more than covered by the money I'll save when I change the keep memory battery now I have the relavant info.
Very pleased with my purchase and can recommend it wholeheartedly as I can other manuals I've downloaded from this site.
Regards
Limey Alex
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Complete manual including mechanical part in good pdf quality. Shaded greys of the pcb due to pdf not perfect but usable.
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Nice pdf file of the manual sent promptly. Thanks.
14VT-L100T
ELECTRICAL TROUBLESHOOTING
VCR POWER TROUBLESHOOTING The VCR is dead.(No power) FLOW CHART NO.1-1 KEY-IN TROUBLESHOOTING Key-in input for VCR is not received. FLOW CHART NO.1-2
Unplug the AC power cord. Replug it a few minutes later. YES Are the AT 5V and AT 12V NO lines normal? YES Are the AT 5V and GND lines properly connected with IC7701? YES Is there oscillation (16MHz) at pins (38) and (39) of IC7701? YES NO Check/replace X7701 and/or IC7701. NO Check power circuit.
Is the key switch in good contact? YES Is there short-circuit in the key input? YES Check poor soldering. Are signals received at pin (27) of IC2001 when the key is activated? YES Check IC7701, IC2001 and signal line of serial datas, serial clock and ready (L).
NO
TROUBLESHOOTING OF VCR SECTION
Check the switch contact.
NO
Check IC2001 and switches for poor soldering.
NO
Check key lines to input IC2001.
40
Does the "L" pulse of syscon reset appear at pin (43) of IC7701 after the AC cord is plugged in? YES Does pin (21) of IC7701 change from "L" to "H" level when the power button is pressed to turn on the power? YES Are the PC 9V and PC 5V lines normal? YES Check the sensor inputs to IC7701 from mechanism. (CAM switches,start/end sensors,and reel sensors)
NO
Check the signal line of sys-con reset all the way up to pin (22) of IC2001.
NO
Check the power key input to IC2001 and serial datas/clocks between IC2001 and IC7701.
NO
Check power circuit.
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