Realistic STA-95 - Page 15

SYMPTOM
CAUSE
AND
REMEDY
17],
AM does
not operate.
A)
Damaged
1C401 of Tuner Board 0062
Replace the
lC.
Defective
L4O1
,
T4O1
,
CF401 or
T4O2
ot
Tuner
Board 0062
Replace
the
defective
component(s).
Defective
transistor TR401
Replace
the
transistor.
Resistor
R4O2, R409 or R411
defective
Replace the defective
resistor(s).
Capacitor C416
or C419 defective
Replace the defective capacitor(s).
Selector switch SW1 defective
Replace the switch.
Defective
tuning
gang
Replace
tuning
gang.
Damaged AM bar antenna
Bepair
or replace bar antenna.
B)
C)
D)
E)
F)
G)
H)
18)
LOUDNESS has
no effect
A) Defective
LOUDNESS
switch
SWS
Replace the switch.
B) Defective capacitor C901,
C902 or
resistor R904
Replace
the
defective component(s).
C) Defective
VOLUME
control
VR902
Replace the VOLUME control.
19) Stereo-Mono
not
effective
A) Defective
MONO
switch SW4
Replace the switch.
2Ol
TAPE
MONITOR not effective
A) Defective
TAPE MONITOR switch
Replace
the switch.
B)
Poor
contact
in TAPE MONITOR input
jacks
Repair or replace
jack(s).
21\ BASS control
has no effect
A) Variable
resistor VR904
defective
Replace.
B)
Defective C908, C909 or R912,
R913, R914,
R91
5
Replace
the
defective component(s).
221
TREBLE
control
has
no
effect
A)
Variable resistor VR903 defective
Replace.
B) Defective C907,
R910, R911, R916
Replace the
defective
component(s).
23],
Excessive noise with
PHONO
input
A)
Faulty
lC 1C501
Replace the
lC.
B) Defective capacitor C501, C506
or resistor
R501,
R503,
R505, R506
Replace the defective component(s).
15