Sony HCD-D170 - Page 12

TUNER SECTION | | OdB=1u.V
Note : As a front-end (FE1) is difficult to repair if faulty,
replace it with new one.
AM Section Adjustment
loop antenna
Setting
:
:
8
(Supplied
accessories)
loop antenna
AM RF SSG
AM antenna
30%
amplitude
|
60cm
terminal
(TM1)
modulation
by
400
Hz
signal
Field
strength
dB
(uV/m)
=
SSG
output
level
dB
(uV/m)
—-26dB.
AM Tuned Level Adjustment
Band : AM
Procedure
:
;
a
1.
Set
the
output
of
SSG
so
that
the
input
level
of
the
set
Adjustment
Location
:
becomes
55
dBu.
{TCB
BOARD]
(Component
Side)
2. Tune the set to 1,050 kHz.
Ss, Adjust RV42 to the point (moment) when the TUNED
indicator will change from going off to going on.
4,djustment Location : TCB board
FM Section Adjustment
Note : This adjustment should be performed after the AM ~
Tuned Level Adjustment due to the same adjustment
element.
Setting :
FM RF stereo signal
generator
Carrier frequency : 98MHz Z<
Modulation : AUDIO 1kHz, 75kHz FM ANTENNA terminal
deviation (100%) (TM1) (75Q )
* Output level : 25dBu (at 75Q open) :
FM Tuned Level Adjustment
Band : FM
Procedure :
1. Supply a 25dBu 98 MHz signal from the ANTENNA
terminal.
2. Tune the set to 98 MHz.
3. If the TUNED indicator does not light, adjust RV41 to the
point (moment) when the TUNED indicator will change
from going off to going on.
Adjustment Location : TCB board