Elmo ST-1200 - E. SOUND; Neither optical nor magnetic recorded film cannot be reproduced; Optical recorded film cannot be reproduced; Magnetic recorded film cannot be reproduced

E. SOUND
Case
Point
Step Remark
Neither
optical nor
magnetic
recorded
film
cannot be
reproduced
AMP assy
(P7-j)
Fuse
(P7-27)
Speaker
(P2-62)
Check whether the input connecting pin to AMP
assy or 12P connector has been disconnected.
Check the breakage of Midget fuse 2A for AMP P-S
input.
If Speaker connector is not in contact with
contact late of AMP assy, bend Speaker
connector to make contact.
Check the breakage of Speaker itself.
If so, replace.
Changing Check the breakage of Changing switch by a
switch (p5-46) tester. If so, replace.
Optical
recorded
film
cannot be
reproduced
Exciter lamp
(p5-6S)
Check whether Exciter lamp would be off
Exciter lamp socket assy as well as the
breakage of Exciter lamp itself.
P-17
p-16
Sound lens
assy
(p5-81)
Silicon photo
diode (P5-77)
AMP assy
(P7-j)
If Sound lens assy has bee misplaced due to P-17
loosening of attaching screws for Sound lens
holder, adjust the position of Sound lens assy.
Check the br akage of the wire of Silicon
photo diode by a tester. If so, replace.
Check the output voltages on Circuit plate in
comparison with the voltage checking points
on AMP circuit plate.
If the unusual voltage would be measured,
replace AMP assy.
Magnetic
recorded
film
cannot be
reproduced
Sound head
(p5-81)
Cancel coil
(p7-34)
Check whether Sound head either would be
tilted or extremely distorted and not touch-
ing recorded track.
If so, adjust the position of Sound head and
or Head film guide.
Check the breakage of Cancel coil.
If so, replace.
P-18
Changing Check the brwakage of Changing switch by a
switch (p5-46) tester. If so, replace.
p-16
AMP assy
(P7-j)
Check the output voltages on Circuit plate in
comparison with the voltage checking points
on AMP circuit plate.
If the unusual voltage would be measured,
replace AMP assy.
- to be continued -
-26-
P-34