About This Items
- After servicing, the operation of the main unit has been checked with a gum battery on hand
- Playback, stop, fast forward, rewind, and auto-reverse (reverse) have been tested over a long period of time.
- Both FWD and REV playback speeds are stable and normal, and the speed difference has been measured and confirmed to be within the acceptable range.
- Both FWD and REV have no unwanted sound fluctuation and wow flutter measurement results are good.
- FM/AM radio reception is good.
- All operation buttons and switch buttons on the main unit have been tested.
- 3.5mm standard earphone jack is equipped, so commercially available earphones can be used.
- Maintenance details
- Exterior and accessories are disinfected and cleaned with alcohol sheet and finished cleanly.
- Dust and dirt are carefully cleaned with a special cleaning agent for electronic parts
- High-quality, durable drive belts are replaced (no inferior general-purpose belts are used)
- New pinch roller replacement
- Idler gear replacement
- Reel gear replacement
- Capstan shaft precision polished and cleaned
- Silicon grease reapplied to each gear rotating part
- Polished and cleaned the head to a mirror-like finish
- Oxide film removed from each metal contact point and electric current improved
- Demagnetized by TEAC head demagnetizer E-3
- Wah flutter measurement and speed adjustment with ABEX 3KHz -10dB Flutter & Speed TEST TAPE
- Azimuth adjustment with TEAC 6.3KHz -10dB Azimuth TEST TAPE
- Winding torque measurement during playback