Kenwood TS-590S Service Manual page 72

TS-590S
Item Condition
4. MCF 1) Menu No.: 54
(11.374MHz) Mode: USB
Spectrum analyzer setting
Center f.: 11.374MHz
Frequency span: 20kHz
XdB/DIV: 10dB
TG level: 0dBm
RBW: 300Hz
VBW: 1kHz
Connect the tracking genera-
tor output to CN301.
Connect the spectrum ana-
lyzer input to CN302.
5. MCF 1) Display f.: 29.200MHz
(73.095MHz) Mode: FM
Spectrum analyzer setting
Center f.: 73.095MHz
Frequency span: 100kHz
XdB/DIV: 10dB
TG level: 0dBm
RBW: 3kHz
VBW: 10kHz
Connect the tracking genera-
tor output to CN303.
Connect the spectrum ana-
lyzer input to CN304.
6. RX Trap 1) Display f.: 21.4MHz
Mode :USB
• 11.3745MHz PRE-AMP: ON
SSG f.: 11.3745MHz
SSG output: –30dBm (7.07mV)
• 44.150MHz 2) Display f.: 21.4MHz
Mode: USB
PRE-AMP: ON
SSG f.: 44.150MHz
SSG output: –30dBm (7.07mV)
7. FM discrimi- 1) Display f.: 29.200MHz
nator Mode: FM
PRE-AMP: ON
AF output: 0.63V/8Ω
SSG f.: 29.200MHz
SSG output: –53dBm (0.501mV)
MOD: 1kHz
DEV: 3kHz
8. 1st mixer 1) Adjustment of VR261
balance
2) Menu No.: 06 (100kHz, USB)
PRE-AMP: OFF
SSG: OFF
72
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Tracking TX-RX CN301 TX-RX
generator (A/2) (A/2)
Spectrum CN302
analyzer
CN303
CN304
SSG Rear ANT 1
panel
AF V.M EXT. SP
SSG
Oscilloscope
AF V.M
Distortion
meter
DM.SP
Audio
analyzer
SSG Rear ANT 1
panel
AF V.M EXT. SP
Adjustment
Parts Method
L301 Adjust the coils to
L302 obtain the frequency
response as shown.
L326
L374
L375
L376
L253 Check S-meter is If S-meter is appear, turn SSG
L255 not appear. level settings down until S-
AF output min. meter is not appear.
Repeat adjust for 2
to 3 times.
TC105 Check S-meter is
not appear.
AF output min.
L595 Adjust the L595 to AF max.
AF maximum output
of 0.63V/ 8 ohms.
Check the distortion 2.3% or less
and the waveform is
a good sine wave.
VR261 Adjust the volume
position of VR261 as
shown.
VR321 Noise min.
Specifi cations / Remarks
11.374MHz
6dB 6dB
3kHz 3kHz
73.095MHz
3dB 3dB
7.5 7.5
kHz kHz