Teac A-2300SD - Troubleshooting

10. TROUBLE SHOOTING
NOTE: The following guide lists specific difficulties that
could occur in the A-2300SD.
Possible causes are listed for each malfunction. Visually
inspect the unit for any damage such as broken or burned
components or wiring, loose connections, etc.
MALFUNCTION
POSSIBLE SOURCE OF TROUBLE
CORRECTIVE PROCEDURE
Capstan fails to turn
Belt off or slipping, line fuse, safety
switch (SW-2), speed select switch (SW-
12), phase advance capacitor (C-5),rewind
play relay (K-3)
Repair or replace the defective com¬
ponents.
Pinch roller fails to contact capstan
in play mode
Operation relay (K-1)
rewind relay (K-3), STOP micro-switch
(S-4), PLAY ( ► ), micro-switch (S-7),
capstan solenoid
Refer to schematic diagram and repair
or replace the defective components.
Right reel motor does not rotate
in play mode.
Reel motor (right), brake solenoid, rewind
relay (K-3), resistor (R-1)
Left reel motor does not rotate in
play mode.
Both motors fail to operate.
Reel motor (left), brake solenoid, rewind
rewind relay (K-3), resistor (R-2)
Operating relay (K-1)
Replace the defective components.
Recorder does not operate in
PLAY ( ► )
Remote control jumper plug missing or
loose, STOP micro switch (S-4), brake
solenoid, rewind relay (K-3), phase
advance capacitor (C-5)
Normal DC resistance of the brake
solenoid is 1.3k ohms.
Refer to schematic diagram and repair
or replace the defective components.
Playback noise or hum
Faulty connections, faulty playback head,
faulty amplifier
Repair or replace defective compo¬
nents.
Noise or hum during record
Magnetized head,faulty connections, MIC
level set to maximum, faulty record amp¬
lifier, record relay (K-401)
Demagnetize and clean head, repair or
replace defective components, check
MIC VR.
Wow and flutter
Defective tape, dirty or defective pinch
roller and pressure, oily or defective belt,
reel motor torque.
Clean or replace defective components.
Adjust motor torque.
Incorrect tape speed
Drive belt in wrong position. Incorrect
pinch roller pressure.
Reposition drive belt.
Adjust pinch roller pressure.
Brakes do not release
Defective brake solenoid.
The D.C. resistance of the brake
solenoid should be 1.3k ohms.
Replace solenoid.
Fast forward or rewind mode
inoperative
Rewind relay (K-3)
Refer to schematic diagram and repair
or replace the defective components.
No record and/or no erase
Record head dirty, erase head dirty,
operate relay (K-1), record relay (K-401),
REC micro switch (S-8), record amplifier.
Bias OSC, record head, erase head.
Refer to schematic diagram and repair
or replace the defective components.
No playback
Playback head defective or dirty,
amplifier-to-deck connections, monitor
switch (SW-501), playback amplifiers.
Refer to playback amplifier voltage
chart.
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