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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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I will definitely be back for more information when I need it.
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The service manual when downloaded and printed out was clear and easy to read. I would have liked to have been able to enlarge some details, but this was not possible as the file permissions did not allow this. The service was very good. The time taken from placing my order to downloading the document was only a few minutes.
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The manual is useful for trouble shooting for an old instrument. It saved money,and let me enjoy DIY.
VC-A415U/H815U VC-H817U/H818U
Note: Whenever replacing the reel disk, perform the height checking and adjustment.
Master plane Reel disk height adjusting jig
Notes: 1. Hold the torque gauge by hand so that it is not moved. 2. Do not keep the reel disk in lock state. Do not allow longtime measurement.
10 ± 0.2mm
Reel disk
A
Mechanism chassis
4-7. CHECKING AND ADJUSTMENT OF TAKEUP TORQUE IN REWIND MODE
� Remove the cassette housing control assembly. � After short-circuiting TP803 and TP802 provided at operation PWB, plug in the power cord. � Setting 1. Set a torque gauge to zero on the scale. Place it on the supply reel disk. 2. Press the rewind button. 3. To calculate the remaining capacity, slowly rotate the take-up reel disk, and then shift it into the rewind mode. � Checking 1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CCW direction. 2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).
Torque gauge
B
Reel disk
Figure 4-7.
4-6. CHECKING AND ADJUSTMENT OF TAKEUP TORQUE IN FAST FORWARD MODE
� Remove the cassette housing control assembly. � After short-circuiting TP803 and TP802 provided at operation PWB, plug in the power cord. � Setting 1. Set a torque gauge to zero on the scale. Place it on the take-up reel disk. 2. Press the FF button. 3. To calculate the remaining capacity of the play back mode, slowly rotate the supply reel disk, and then shift it into the forward mode. � Checking 1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CW direction. 2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).
Torque gauge
30mN·m (306gf·cm) or more CCW
The gauge is held at its maximum value. (Red mark)
Supply reel disk 30mN·m (306gf·cm) or more CW
The gauge is held at its maximum value. (Red mark)
Idler ass'y
Figure 4-9. � Adjustment 1. If the rewind winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, drive belt, and limiter pulley with cleaning liquid, rewind again, and check the winding-up torque. 2. If the winding-up torque is still out of range, replace the drive belt.
Idler ass'y
Figure 4-8. � Adjustment 1. If the FF winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, drive belt, and limiter pulley with cleaning liquid, and check again. 2. If the torque is less than the set value, replace the reel belt.
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