Akai X-1810

b) Cartridge
Symptom Trouble
No sound from Line Output.
1. Dirty head surface.
2. Playback head defective.
(Reel operation is normal)
Reverse Rotation of capstan motor when 1. Cartridge function SW (SW5-1) does not operate properly.
cartridge is loaded.
Loud Hum
(Reel operation is normal) 1. Playback head defective.
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2. Recording Problems
(Unit plays back pre-recorded tapes satisfactorily, but recording not satisfactory)
a) Reel
Symptom
No recording possible
(VU meter does not indicate)
(VU meter indication is normal)
Trouble
1, REC/PLAY slide switch (SW2-1a, b) does not function properly.
2. Defective Input Jack.
| 3. VU meter itself or lead wire defective.
Check Transistor TR401, 402 (28C971 @ @ )
Bias head does not move.
Components of oscillator circuit or oscillator coil defective.
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Loose connection of Pl<~ Ji
Sound distorted
(VU meter functions normally recording
monitor through external headphone also
normal)
(VU meter functions normally but recording
monitor through headphone abnormal)
1. Check recording bias voltage and components of oscillator circuit.
Faulty recording equalization circuit,
3. Dirty head surface,
1. Over-recording input level.
2. Defective input equipment. (microphone, etc.)
Faulty erasing
(Does not erase at all)
(Incomplete erasure)
1. Erase head defective.
2. Disconnected erase head wire or excessive amount of dust adhering to sir-
face of erase head.
1. Erasing bias voltage low.
Check components of oscillator circuit.
2. Erase head coil defective.
Erasing noise (popping noise)
1, Defective recording tape.
2. Head magnetized.
Bias voltage out of adjustment.
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