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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.
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Complete MFG Service Manual at a good price FAST !
2. Adjustment Procedure (1) How to activate adjustment mode Turn ON the power (set 1.30V batteries terminal) while shorting TEST of the main circuit board. Once adjustment mode is activated, LCD will all light up and EL backlight will be turned ON. Then it displays �Manufacture MODE�.
(2) Using the multimeter, measure the DC voltage between VDD-GND of the test point. Check that the voltage between VDD-GND is more than 2.3V. If it has not reached 2.3V, short the VO ADJ. of the test point with the solder. (3) EEPROM Initialization Press the �DISPLAY� key. �EP INT OK� appears on the display. Press �PLAY/STOP� key to display �IDLE�.
(4) PIT disc (TEST DISC: TGYS1 or TDYS-1) Press �F-SKIP� and �B-SKIP� keys to shift the pick-up towards the centre. Insert the disc and press �PLAY/STOP� key. (Make sure the top panel is upward) LCD of the remote controller will be displayed �AUTO ADJ H� first, then �COMPLETE�. Press �PLAY/STOP� key again to display �IDLE�. * If it displayed �Failed� during adjustment, it means that some abnormalities are detected and the operation is terminated. (5) GRV disc (SONY MDW-74) Insert the disc and press �PLAY� key. (Check the facing direction of the set) LCD of the remote controller will be displayed �AUTO ADJ L� first, then �COMPLETE�. Press �PLAY/STOP� key again to display �IDLE�. * If it displayed �Failed� during adjustment, it means that some abnormalities are detected and the operation is terminated. (6) Checking RF Level and Error Rate TEST DISC: Insert TGYS1 or TDYS-1. Press ��� key, display �032c 00e� and playback. Make sure if the error rate is below �50e�. Check the RF waveform (TP3) with an oscilloscope and it is within the 1.0±0.2V p-p. Press �PLAY/STOP� key to display �IDLE�. Press �+� key of the remote controller. Display �600c 00e� and playback. Make sure if the error rate is below �60e�.
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