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Very good quality original datasheet!I like this amazing website!!!!!!
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Excellent just what I needed to replace the electrolytic caps and make this old gem a beauty again. Was as scan of the original photocopied service manual.
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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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Recovery flowchart (1-1)...Changing the Vol Offset setting voltage
Note: Disregard the discharge that may appear during voltage-change setting.
[From the main flowchart (1)]
Display RST MASK 09 (light blue). / [MKS S59]
� If RST MASK 09 (light blue) is already displayed, skip this step.
B
Set VOL OFFSET to the setting value 000. / [VOF 000] � This setting becomes VOL OFFSET_min1.
Gradually increase the VOL OFFSET value until disappear the discharge (lit cell). The VOL OFFSET value must be 245 or less.
VOL OFFSET_min1
Note: Make a note of this VOL OFFSET_min1 value.
VOL OFFSET_min1
C
155?
No
Replacement of abnormal circuits or re-replacement of the panel required
Yes Display RST MASK 10 (light purple). / [MKS S60]
Set VOL OFFSET to the setting value 000. / [VOF 000] � This setting becomes VOL OFFSET_min2.
Gradually increase the VOL OFFSET value until disappear the discharge (lit cell). The VOL OFFSET value must be 245 or less.
D
VOL OFFSET_min2
Note: Make a note of this VOL OFFSET_min2 value.
VOL OFFSET_min2
155?
No
Replacement of abnormal circuits or re-replacement of the panel required VOL OFFSET_min
Yes Choose the higher value between VOL_OFFSET_min1 and VOL_OFFSET_min2, and set it as VOL_OFFSET_min.
[To the Recovery flowchart (1-2)]
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PDP-4280HD
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