Kenwood TS-990S Service Manual page 171

Item Condition
HF BPF*1 13) Main display f.:
28.200000MHz
• 28M Mode: USB
P.AMP: ON
Spectrum analyzer setting
Start frequency: 0MHz
Stop frequency: 60MHz
TG level: -10dBm
• 35M~40M 14) Main display f.:
37.500000MHz
Mode: USB
P.AMP: ON
Spectrum analyzer setting
Start frequency: 0MHz
Stop frequency: 80MHz
TG level: -10dBm
• 40M~ 15) Main display f.:
46.5M 43.000000MHz
Mode: USB
P.AMP: ON
Spectrum analyzer setting
Start frequency: 0MHz
Stop frequency: 100MHz
TG level: -10dBm
After the adjustment, discon-
nect the cable from CN1
and CN93, and connect the
original cable.
3. MAIN RX 1) Main display f.:
1st mixer bal- 14.200000MHz
ance*1 Mode: USB
P.AMP: ON
AGC: OFF
SSG output: OFF
Disconnect the cable from
CN1 and connect the SSG
output to CN1.
4. MAIN RX 1) Main display f.: 7.000000MHz
1st IF notch Mode: USB
8.248MHz P.AMP: ON
(adjustment AGC: OFF
2) *1 SSG f.: 8.248MHz
SSG output: -35dBm
(3.98mV)
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Tracking RX CN1
generator (A/2) CN93
Spectrum
analyzer
SSG RX CN1 RX
DVM (A/2) CN98 (A/2)
(DUTY)
SSG Rear EXT. RX
AF VM panel SP2 (A/2)
RX CN1
(A/2)
TS-990S
Adjustment
Parts Method
Check that it is the
frequency response
as shown.
VR2 2.5V ±0.05V
TC1 Adjust each trimmer
TC2 to get the AF mini-
mum output.
Repeat the adjust-
ment 4 to 5 times.
Specifi cations/Remarks
26.50MHz 35.00MHz
35.00MHz 40.00MHz
40.00MHz 46.50MHz
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