Kenwood TS-990S Service Manual page 166

TS-990S
Item Condition
4. MAIN VCO3 1) Main display f.: 3.300000MHz
lock voltage Mode: USB
2) Main display f.:
23.999990MHz
5. MAIN VCO4 1) Main display f.: 4.500000MHz
lock voltage Mode: USB
2) Main display f.:
26.499990MHz
6. SUB LO2 1) Menu No.: 0
level Mode: USB
Spectrum analyzer setting
Center f.: 62.4MHz
Frequency span : 1MHz
Disconnect the cable from
CN65 and insert a cable from
the spectrum analyzer.
After the adjustment, connect
the cable to CN65.
7. SUB REF 1) Sub display f.:
lock voltage 14.100000MHz
Mode: FM
8. SUB LO1 1) Sub display f.: 1.900000MHz
level Mode: USB
Spectrum analyzer setting
Center f.: 13.274MHz
Frequency span: 1MHz
Disconnect the cable from
CN63 and insert a cable from
the spectrum analyzer.
2) Sub display f.: 7.150000MHz
Mode: USB
Spectrum analyzer setting
Center f.: 18.524MHz
Frequency span: 1MHz
After the adjustment, connect
the cable to CN63.
9. TX VCO1 1) Main display f.: 0.030000MHz
lock voltage Mode : USB
[TX] key selection: Main
2) Main display f.: 6.259990MHz
3) Main display f.: 6.260000MHz
166
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
DVM PLL M_CV PLL
(MAIN) (MAIN)
PLL
(MAIN)
Spectrum PLL CN65 PLL
analyzer (SUB) (GR/BK) (SUB)
SD_CV
CN63
(BL/WH)
DVM PLL S_CV PLL
(SUB) (SUB)
Adjustment
Parts Method
TC4 1.3V ±0.05V
Check 11.2V or less
TC5 1.3V ±0.05V
Check 11.2V or less
L71 Level max. –13dBm or more
TC3 3.0V ±0.1V
L112 Level max. –7dBm or more
L129
L149
L116 Level max. –3dBm or more
L135
L148
TC1 1.5V ±0.05V
* The TX VCO adjustment can
be adjusted in the state not
transmitted.
Check 11.2V or less
1.0V~1.8V
Specifi cations/Remarks