AKAI AJ-360H 3 Band Radio Cassette Recorder /Boombox/ (1980-81) Part 1 Repair

Vintage Boombox az Akai-tól 1981-ből.
Tisztítva-átnézve-javítva.
Keleti OIRT normás 65-74 MHz-ig, a 80-as évek-ben még Magyarországon is keleti norma volt így az akkori adókat jól fogta, mivel Magyarországon forgalmazott termék volt, a tulajdonos nem kérte az áthangolást nyugati CCIR normára hagy maradjon eredeti állapotban, de 2-3 adót így is lehet hallgatni rajta.
Made In Japan.

Akai AJ-360 H radio tape recorder. Manufacturer: Akai Electric Corp. Ltd., Japan.

An integrated version of a mono cassette recorder and radio frequency stage, as well as a mono power amplifier. The radio unit is suitable for receiving medium-, short- and ultra-short-wave radio programs. The devices that were put on the market in Hungary were equipped with the OIRT standard URH band. The reception of the radio program is supported by a built-in ferrite antenna on AM bands and a telescopic antenna on FM bands. The recording output of the tape recorder is set to the optimal level by an automatic level control circuit, there is no possibility to manually control the output. With the mango unit, you can record with the built-in electret microphone, from its own radio frequency unit, as well as from an external program source. Audio frequency input and output connections are according to NAB and DIN standards. The recording mode of the tape recorder is indicated by the lighting of a red LED. The simultaneous operation of the radio unit and the tape recording is facilitated by the oscillator switch that can be used when receiving AM bands, which is used to cancel the "whistle" caused by interference. This eliminates the overlap between the frequency created by the premagnetizer oscillator of the tape recorder and the AM center frequency. An automatic tape end switch is built into the mechanics of the tape recorder, which switches the device off from recording/playback mode. It also has a quick channel search function.
Technical data and quality characteristics
Mechanical data

Operating position: horizontal and vertical
Tape storage system: Compact Cassette
Recordable track system: half track, mono
Playable track systems:

half band, mono
2x quarter-track, stereo (monauralized)

Recording and playback tape speed: 4.76 cm/s ± 2%
Belt speed fluctuation: ± 0.25%
Fast winding time for C 60 cassette: 80 s
Built-in motor: 1 pc, direct current
Tape length measurement: with a three-digit counter
External dimensions: 106 x 283 x 383 mm
Weight: 3.5 kg (without batteries)