Akai 1710W

4. Intermittent noise.
Defective TR1, TR2.
Defective R3, R5. :
Defective V1, V2. Replace V1, V2
Defective R6 } Check R6.
Output transformer being bumed out. ars Check and repiace output transformer.
5. Constant background noise from speaker.
Replace TR1, TR2.
Check and replace
Noise level controllable with
volume control.
Noise level not controllable with
volume control
Noise only while tape is being Replace recording tape with new one. |
played.
Tape heads being magnetized. Demagnetize heads using head demagnetizer.
Replace TR1, TR2.
Check R3, R5.
Noise with or without tape on
Tecorder.
Defective TR1, TR2
Defective R3, R5
6. Lack of bass.
Defective C3, C5, C20 Check C3, C5, C20.
Defective recording tape. Replace recording tape.
7. Lack of treble.
Dirty head surface
Weak back tension.
Record/play head mis-aligned (Azimuth a ; ;
alignment of gap in recording head.) Reralign head using standard alignment tape.
Worn-out tape heads. Replace head assembly.
8. Sound distorted.
Defective TR1 or TR2 Replace TR1 or TR2.
Check componenent parts in circuit by mea-
Incorrect circuit rating suring voltage. See wiring diagram for re-
gular voltage.
Defective loud speaker. Replace loud speaker.
Clean tape heads.
Check supply reel shaft assembly and
readjust spring tension.
Recording tape in close contact
with tape heads.