Adjustments - Kenwood TS-830S Service Manual

ADJUSTMENTS
Item
6 Carrier
adjustment@)
Condit~on
IF SHIFT Centered
VBT Fully
clockwise
MODE USB
MODE LSB
- -
Measurement
IMODE USE 456 5 kHz Reference
value
MODE LSB 453 5 kHz
I
MODE CW 455 7 kHz
STBY SEND
- - -
ST BY REC
- -
7 VFO. RIT Scale 0 - 5 0 0 Should rotate
Test
equipment
RF
VTVM
FIX CH check
and adjustment
Adjustment
Specif~cation
0 3 V ? l dB
I
I
['"
Short
jumper
IF
Unit
IF
smoothly and
Remarks
NOTE The
slug of L20
should be
adjusted
while it
IS
turned coun-
terclockwise
If the voltage
IS
outside the
spec~f~ed Iim~t,
adjust L l 9 and
L20 u n t ~ l the
voltage
IS
0 3V
for both USB
and LSB
Ter-
minal
Rear panel SG SW OFF
VFO 2 5 0
MODE CW
STBY SEND
I
Set the VFO dial to 5 0 A t
this time set the CAL
control to the index
Set the VFO dial t o approx
4 5 0 Set the CAL control
d ~ a l calibrated under this
VFO setting exactly to the
index
Tune in 5550 0 0 kHz with
the main tuning knob
Under the above cond~tion,
set the CAL control to the
index Turn the matn tuning,
and set the calibrated
CAL control to the index in
the order of 0, 100, 200,
300,400,and 500 to check
frequency deviation at each
1 0 0 kHz point
Set the CAL control back to
2 5 0 under the above condl-
tion (do not turn excessive-
ly
),
then further set back
the CAL control to 0 w ~ t h
respect to the frequency
at 2 5 0 to check the diffe-
rence from the reference
frequency
Parts
L19
L20
NOTE
L20
Method
Max level
RF VTVM
F counter
F counter
PLL
Rear
panel
Rear
panel
have no abnormal
noise
Pin 2,
connec-
tor ($
1 P
(GND)
EXT
VFO
1 P
7 P
(G ND)
When the vol-
tage
IS
out
quency is
outside
specifl-
catlon
EXT
2 0 0 mV
8 0 0 Hz UP
side specifi-
cation
VFO
VFO
5550 O0 kHz
f 2 0 0 Hz
5950 0 0 kHz
+200 Hz
The 5 0 kHz polnt
on the dial scale
must be al~gned
to the index
W i t h ~ n + 2 kHz
Less than 400Hz
TC2
L4
When
the fre-
Repeat the
adjustment
.
several
times until
the frequency
IS
w i t h ~ n
spec~f~cation
Check the
scale (Elect-
r~cally)
Backlash
200mVf 1 dB
800+ 5 0 Hz
VFO
I
1
CW SHIFT
1
L3
TCl
5 5 M H z
5 6
5 7
5 8
5 9
6 0
VFO
' I P
7 P
(GND)
0
1 0 0
2 0 0
300
4 0 0
500