Kenwood TS-590S, Service Manual

Page: 75 / 162

TS-590S
75
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
24. PRE-AMP
gain
1) Display f.: 14.200MHz
Mode:
USB
PRE-AMP: ON
AGC: FAST
AF output: 0.63V/8
Ω
SSG f.: 14.201MHz
SSG
output: –119dBm (0.25µV)
SSG
Oscilloscope
AF V.M
DM.SP
Rear
panel ANT 1
EXT.SP
Set the AF level at
0dB.
2) PRE-AMP: OFF Check the AF level. –(5~15)dB
25. RF ATT 1) Display f.: 14.200MHz
Mode:
USB
ATT: ON
AGC: FAST
AF output: 0.63V/8 Ω
SSG f.: 14.201MHz
SSG output: –107dBm (1µV)
Set the AF level at
0dB.
2) PRE-AMP: OFF Check the AF level. –(10~14)dB
26. NB gain 1) Display f.: 14.200MHz
Mode:
USB
PRE-AMP: ON
AGC: FAST
NB1: ON
SSG f.: 14.201MHz
SSG
output: –103dBm (1.58µV)
DC V.M
SSG
Oscilloscope
AF V.M
DM.SP
Noise G.
TX-RX
(B/2)
Rear
panel
TP601
(NB)
ANT1
EXT.SP
TX-RX
(B/2) L653
L664
L665 Voltage min. 4V or less
2) NB1: OFF
→
ON Adjust output of
noise generator to
S5, and check. Noise should disappear when
NB1 is ON.
27. VGS-1
(Option) 1) Disconnect the antenna cable
from the transceiver.
Connect the VGS-1 to CN901
on the Control unit (A/3).
Display f.: 14.100MHz
Mode:
USB
AF knob: MIN
Front
panel [PF A] 1 push The display frequency can be
heard vocally.
2) Connect a microphone to the
MIC jack.
[CH1] Hold down [CH1]
key, and talk into
the microphone for
approximately 10
seconds.
Press the [CH1] key
again. The recorded voice message
is played back.