Akai - GX-F31 Cassette recorder-player

Here is a well-working Akai cassette deck offered.
The cassette deck records cleanly.
Plays back cleanly.
Winding works nicely.
The cassette deck is speed-calibrated.
Azimuth is aligned.

The cassette deck has undergone extensive maintenance, including, among others, (see photos)
New pinch roller
Take-up motor replaced
New idler wheel rubber
New play and record LEDs
New door belt
New reel microswitch (pressure switch)
Old grease replaced
Capstan oil renewed
Entire tape path and housing, knobs, display, etc. cleaned
Potentiometers cleaned
Power indicator replaced with LED
Case repainted; it has a few dents on the top left
Etc., etc..........

General
Manufacturer: Akai
Model: GX-F 31
Type: Cassette deck
Year of production: 1982 - 1985
Made in: Japan
Color: Silver, Pearl Shadow (green-silver)
Remote control: optional
Dimensions: 440 x 100 x 345 mm (W x H x D)
Weight: 5.8 kg
Original price approx.: 750 DM
Connections
Number of inputs:
Cinch 70 mV/47 kΩ
DIN 2 mV/10 kΩ
Cinch MIC 0.25 mV/600 Ω
Number of outputs:
Cinch 410 mV
DIN 410 mV
Headphones
Technical data
Speakers: 2
Motors: 2
Timing jitter: ± 0.035/0.10% (WRMS/DIN)
Tape types: I, II, IV
Frequency range:
Type I: 20 - 17,000 Hz, ± 3 dB at -20 dB VU
Type II: 20 - 18,000 Hz, ± 3 dB at -20 dB VU
Type IV: 20 - 19,000 Hz, ± 3 dB at -20 dB VU
Distortion factor: 0.8% with pure iron
Signal-to-noise ratio: > 60 dB (without Dolby)
Search title: Yes
Dolby: B + C
MPX-filter: No
Fader: Yes
Special features
Automatic playback
Blank search function
Timer circuit
Output level control
Headphone jack