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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 !
ELECTRICAL ADJUSTMENT -5/7
<DECK Section> Make the following preparations for DECK section adjustment. Preparations Measuring Equipment: Audio Signal Generator / Attenuator / Wow and Flutter Meter (Frequency Counter) / Oscilloscope / Millivoltmeter / Dummy resistance (6�) Test Tape: TTA-100 / TTA-300 (or TTA-310, 320) / TTA-200 / TTAA602(or equivalent recording and Playback Test Tapes) 10. Tape Speed Adjustment (DECK 2) Requirements � Measuring instrument: Wow and flutter meter (frequency counter) Test tape: TTA-100 (3 kHz) Test point: HP OUT Adjustment point: SFR1 1) Connect the wow and flutter meter to HP OUT of the unit. 2) Insert the test tape (TTA-100) to DECK 2. Play back the middle part of the tape, and adjust SFR1 so that the level 3,000 Hz 5 Hz is monitored. 11. Tape Speed Check (DECK 1) Requirements: Same as the above, 10. 1) Insert the test tape (TTA-100) to DECK 1. Play back the middle part of the tape, and check that the level is ranged within 55 Hz as compared to the speed monitored for DECK 2. 12. Wow and Flutter Check (DECK 1 and DECK 2) Requirements: Same as the above, 10. 1) Connect the wow and flutter meter to HP OUT of the unit. 2) Set the wow and flutter to JIS for INDICATOR and to W RMS (WTD) for mode. 3) Play back the middle part of the test tape (TTA-100), and check that the level ranges under 0.25%. 13. Head Azimuth Adjustment (DECK 1 and DECK 2) Requirements � Measuring instrument: Oscilloscope Test tape: TTA-300 (10 kHz) Test point: TP8 (Lch), TP9 (Rch) Adjustment point: Head azimuth adjustment screw 1) Connect the probe CH1 of the oscilloscope to TP8 (Lch) and CH2 to TP9 (Rch). 2) Set V mode of the oscilloscope to ADD. 3) Insert the test tape (TTA-300) to DECK 1. Forward and play back the middle part of the tape, and adjust the head azimuth adjustment screw so that the waveform achieves its maximum level when 10 kHz is played. 4) After adjustment, secure the screw with glue (1600 B). 5) Apply the above steps 3) and 4) to DECK 2. 14. Playback Frequency Check (DECK 1 and DECK 2) Requirements � Measuring instrument: Millivoltmeter Test tape: TTA-300 (315 Hz / 10 kHz) Test point: TP8 (Lch), TP9 (Rch) 1) Connect CH1 of the millivoltmeter to TP8 (Lch) and CH2 to TP9 (Rch). 2) Insert the test tape (TTA-300) to DECK 1, and play back 315 Hz and 10 kHz. 3) Check that the level of 10 kHz is ranged within 0 315 Hz as a reference. 4) Apply the above steps 2) and 3) to DECK 2. 3 dB compared to the output level of
TP8 TP9
WOW&FLUTTER METER Hz INPUT HP OUT %
OSCILLOSCOPE
OUTPUT CH1 CH2
AC MILLIVOLTMETER
CH1 CH2 TP8 TP9
-39-
 $4.99 NSXTR77 AIWA
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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