Realistic STA-95 - Page 14

SYMPTOM
CAUSE
AND
REMEDY
13) FM
does not
operate.
l)
Transistor
TR801
or TR802
damaged
Replace
the
damaged transistor(s).
Resistor
R801
defective
Replace the
resistor.
Short circuit in
Tuner
B+
circuit
Repair
the short.
Poor
contact
in SELECTOR
switch SW1
Replace
the switch.
Resistor
R304
defective
Replace the resistor.
Capacitpr
C302 defective
Replace
the
capacitor.
Defective
transistor
TR201
or
lC
1C201,
1C203
Replace
the
defective transistor
or lC(s).
Defective IFT
T201
Replace
the
lFT.
Defective
resistor
R203
or R208
Replace
the resistor(s).
Defective
transistor
TR101
,TR102,
TR103
0r
coil
L101,
L1
02, L103, L104
of Tuner
Board
0062
Replace
the
defective
component(s).
Faulty
lead-in
Repair
or replace
the lead
in.
A)
B)
C)
D)
E)
F)
G)
H)
J)
K)
14) Poor
multiplex
separation
A) lmproper
adjustment
Readjust
T2O1
,
VR301
and VR302.
(Refer
to MPX
ALIGNMENT
on
page
9)
B)
Transistor
TR2O2,
TR203,
TR2O4,
TR3O1,
TR302, TR303,
TR304,
TR305
or tC tC301
defective.
Replace
the
defective
component(s).
C) Variable
resistor
VR302
defective
Replace
the
variable
resistor.
15)
Stereo
indicator
LED
does not
light.
A) Defective
indicator
LED
D755
Replace
the LED.
B) lmproper
adjustment
of VR201
of
Tuner
Board
0062
Make
readjustment.
(Refer
to
MPX ALIGNMENT
on
page
g)
C) Defective
lC
1C301
or resistor
R307
Replace
the
defective
component(s).
16)
FM
volume
not
sufficient
A) If
volume
of both
L and R
channels not
enough:
Front
End
defective,
or faulty
lC 1C201,
IFT
T201
or
faulty
capacitor
C224,
C301 of Tuner
Board
0062
Locate
and replace
the
defective
component.
B)
lf sound
of one
channel
not
enough:
Defective
L301
(Board
0062)
in case
of R
channel,
or defective
L302
(Board
0062)
in
case of L
channel
Replace
the
defective
coil(s).
14