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It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
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Another excellent aquisition. Fine detailed manual. Thanks
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Good quality for the scan, complete, but as usual for Tascam, not so comprehensive !
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great manual readable & easy to downlaod to be recommanded
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Very useful, not the best scan, but definitely readable !
E-F Balance Check
oscilloscope BD board TP (TEO) TP (VC)
Adjustment Location [BD BOARD] � Component Side �
RF RV101 IC101 RV103 TEO FEO VC RV102 TEI FEI FOK
Procedure: 1. Connect a lead wire to the test point TP501 on Display board. 2. Connect oscilloscpe to test point TP (TEO) on BD board. 3. Turned power switch on, load the disc (YEDS-18). 4. 5. 6. 7. Connect a lead wire connected to the test point TP501 to ground. Press the TIME button. (TRACKING SERVO OFF) Playback the disc (YEDS-18). Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0Vdc, and check this level.
Traverse waveform IC104 A 0V B
PCK GND
level: 300 ± 100 mVp-p
Specified level: �
A�B x 100 = less than ± 7% 2 (A + B)
[DISPLAY BOARD] � Conductor Side �
� A + B = 300 ± 100 mVp-p 8. Remove the lead wire connected in step 1. Focus/Tracking Gain Adjustment (RV102, RV103) This gain has a margin, so even if it is slightly off. There is no problem. Therfore, do not perform this adjustment. Please note that it should be fixed to mechanical center position when you moved and do not know original position.
TP501
� 10 �
IC102
IC501
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