Pioneer CT-W606DR Tape Deck - Repair, Overhaul, and Step-by-Step Calibration

Links to video clips:
- Presentation of the device and constructive details 4:00
- Preparing to do maintenance 7:29
- Review and maintenance of mechanisms 12:21
- WOW & Flutter test (floating) 14:09
- New head test 19:18
- 22:13 speed measurement and adjustment
- DOLBY level adjustment (Zero DB) 24:54
- Checking the accuracy of the V.U. 28:12
- Measurement and adjustment of the frequency of BIAS 29:36
- Setup and adjustment of 31:24 recording
We show a CT-W606-DR-SR tape deck that was repaired in our workshop. We show each step, step-by-step, giving you an idea of how we work on tape decks and, more specifically, on microprocessor-controlled models. We show the tests to be done when changing the head of a tape deck.
EXPLANATION AND DETAILS OF THIS VIDEO
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Pioneer's dual tape decks became famous and popular in the 90's. They combined quality sound with a good amount of features, for an affordable price.
Models beginning with the CT-W offered quality sound and were among the first cassette recorders with quality comparable to that offered by CDs and digital media.
Among other technologies that improved sound, some models in the CT-W lineup offered digital sound processing. This processing removes absolutely all the noise from the tape and the circuits, the famous hiss that has always been present in cassette tapes.
Digital processing is not limited to sound. The microprocessor controls all tape deck functions, including the front panel and the two tape transport mechanisms.
We are talking, in particular, about the CT-W606DR, CT-W606-DR-SR and CT-W-616DR models. There are other models from the 700 and 800 lines with the same technology and their maintenance follows the same lines shown in this video.
When these devices need maintenance, the mechanical part receives the same care as other models. But the recording part is different. A large part of its calibration is already preset in the microprocessor, but there are still some adjustments that need to be checked and adjusted manually.