AMSTRAD TS80 - General Troubleshooting

GENERAL TROUBLE SHOOTING GUIDE
All functions on unit fail to operate. Lack of power supply. Check mains plug/mains fuse.
All functions fail to operate except Fuse F501 blown. Replace. |
record deck mechanism. {f fuse continues to blow, check for Check and replace as necessary.
faulty mains transformer or meter
bulbs.
If fuse still continues to blow.
Circuit fault somewhere in area of
power supply. Check and replace
as necessary.
Replace as necessary.
Check Bridge Rectifier or Power IC.
General circuit fault. Check and
repair as necessary.
Re-locate.
Fuses 502 or 503 blown.
If either fuse continues to blow.
If fuse stili continues to blow.
All functions fail to operate except
record deck mechanism
Connecting plug between cassette
section and main amplifier not
locating properly.
Aerial not connected or aerial faulty.
VU LEDs not working.
Check aerial and replace or repair as
necessary.
General circuit fault in FM stage.
Check and repair as necessary.
Repair/replace as necessary.
General FM circuit fault. Check and
repair as necessary.
Re-align decoder (see alignment
instructions).
Replace.
FM Tuner section selects no station
but gives loud hiss.
If there is no fault in the aerial.
Poor aerial: 750hm downlead broken.
lf aerial and leads are ok.
FM Tuner gives some sound but
poor quality.
FM works, but stereo light in- Decoder incorrectly aligned.
operative.
LED faulty.
Check decoder IC UPC1197C.
lf UPC1197C ok,
fault is probably C203
(470pf Poly).
incorrect alignment.
If alignment correct.
Check and replace as necessary.
Check and replace as necessary.
Check and re-align as necessary.
Circuit fault. Repair as necessary.
N.B. If replacing any components on
the AM section, the set must be
re-aligned.
Repair as necessary.
AM radio section (MW/LW)
inoperative or very weak.
Wire disconnected from power
supply.
Motor fault. Belt disconnected.
Stylus damaged.
Stylus not located correctly in
cartridge.
Cartridge faulty. Replace.
Cartridge faulty. Replace.
Wiring between cartridge and amplifier
section disconnected.
Belt slipping or stretched.
Record deck fails to operate
mechanically.
Repair/replace as necessary.
Replace.
Re-locate.
Record deck operates mechanically
but gives weak or distorted sound on
both channels.
Record Deck operates mechanically
but gives no sound on either or one
channel.
Clean, relocate or replace as
necessary.
Record deck wow or flutter.
Check and replace as
necessary.
Record deck speed control Speed control IC faulty.
inoperative.