AMSTRAD TS80 Service Manual page 4

| Symptoms | Fault | Cure
Connecting plug between cassette
section and main amplifier not
locating.
Motor faulty.
Drive belt not tn position.
Cassette deck mechanism not turning.
Cassette jammed.
General mechanical fault in
cassette mechanism.
Cassette speed varies (wow and
flutter) Drive belt in incorrect position.
Motor faulty.
General: mechanical fault in
cassette mechanism.
Dirty or worn pinch roller assembly.
Dirty R/P Head.
R/P Head picks up dust deposit
almost constantly.
R/P Head worn.
Poor quality of recording or
playback.
Pinon connecting plug between
cassette circuit and amplifier circuit
not locating properly.
Generali electronic fault on
Cassette
Faulty erase head.
Wire disconnected from erase head.
Faulty oscillator coil (L303).
When making new recordings, old
recordings not erasing properly.
Re-locate.
Check and replace as necessary.
Re-position drive belt. Check for
stretching of the belt and replace if
necessary.
Replace cassette.
Check and repair as necessary .
Clean or replace as necessary.
Re-position drive belt or replace if
worn or stretched.
Check and replace as necessary.
Check and repair as necessary.
Clean as necessary.
Head requires demagnetisation.
Replace.
N.B. Please refer to cassette
re-alignment instructions.
Re-locate plug correctly.
Check and repair as necessary.
Replace.
Repair as necessary.
Check and replace as necessary.
Faulty leads from main amplifier
and cassette.
LEDs faulty.
VU LEDs not working correctly.-
Check and repair as necessary.
Replace and re-adjust.
Severe hum on one or both channels
with volume at minimum.
Output IC faulty.
Check and replace.
Hum on one or both channels at General circuit fault.
high volume only.
Check and repair as necessary.
Check speaker and speaker leads
by reversal.
Output IC faulty.
One channel not working.
One channel not working and
blows fuse(s) 502 or 503.
Volume or tone controls crackling
when operated.
Output LEDs not working correctly.
Faulty LEDs.
Fault on LED PCB.
Headphone socket faulty.
Lead disconnected between 'phone
socket and speaker socket.
Speaker socket faulty.
Faulty speaker.
Check by reversal of speakers.
If reversal of speakers demonstrates
fault in amplifier section, faulty
power IC.
If fault condition persists, general
amplifier fault.
Sound through headphones but not
speakers, one or both channels.
One speaker gives distorted sound.
Repair or replace as necessary. |
Check and replace as necessary.
ee
Dirty or worn potentiometers. Spray with switchclean or replace |
if necessary.
Replace as necessary.
Check and repair as necessary.
Check and replace.
Check and repair as necessary.
Check and replace as necessary.
Repair and replace as necessary.
Check and replace.
Check and repair as necessary.