Kenwood TS-590S Service Manual page 162

Receiver Section
14.001MHz
–110dBm –106dBm
–113dBm –111dBm –107dBm
L261
Q263 Q265
ANT CN100
RF
Q236
RAT
BPF
Q264 Q266
L323
Q321 Q323
Q322 Q324
[–102dBm]
Measurement condition
Frequency: 14.0MHz
PRE AMP: ON
ANT input: –113dBm/0.501µV
AF output: 0.63V/8Ω, 1kHz
Mode: USB
The values in parentheses ( ) are those in FM mode
The values in parentheses [ ] are those in RX2 (IF1: 73.095MHz)
Input –113dBm from the antenna, set AF VOLUME so that AF output is 0.63Vrms, and measure the signal level at each part.
The AF section is measured with an oscilloscope and the other parts are measured with an RF voltmeter.
Transmitter Section
CONTROL UNIT (X53-446 A/3)
AF 1kHz
5mVrms 28mVp-p 85mVp-p
IC66 IC72
4 DSP 12
MIC IC61 IC62 IC63 ADC IC301 DAC
Measurement condition
Frequency: 14.2MHz
Mode: USB
MIC input: 1kHz/5mV
Output power: 100W
MIC level: ALC zone maximum
Audio frequency section is measured by the AF voltmeter or oscilloscope.
Radio frequency section is measured by high impedance RF voltmeter.
TX-RX UNIT (X57-785 A/2)
–107dBm –96dBm
–108.5dBm
L264
XF301
Q451
D422
XF371
L326 AMP
L421
L422
D423
[–102dBm] [–98dBm]
[–102dBm] [–105dBm]
73.095MHz
TIF 24kHz 10.695MHz
450mVp-p 400mVp-p
28mVp-p 450mVp-p
4 5
IC71 IC70 IC701 XF471 Q721
Q702
11.374MHz
–108.5dBm –96.5dBm –74dBm
–102.5dBm –112.5dBm –99dBm
ATT
D461 XF474 D522 Q453
Q541 Q521
D462 Q454
XF475 D523
Q522
D463 D524
D464
XF471
XF472
XF473
D523
[–98dBm] [–101dBm]
10.695MHz
TX-RX UNIT (X57-785 A/2)
73.095MHz
20mVp-p
450mVp-p 20mVp-p
D422
L422 L376
L421
D741
Q742
D423
RIF 24kHz
–87dBm –71dBm
–78.5dBm –84.5dBm –71.5dBm
D551
L552 RXFM
FM CN600
D525
D552
Q551
RIF
IC591
(455kHz) IC592
FM IC
(1.0Vp-p)
AF 1kHz
CONTROL UNIT (X53-446 A/3)
RIF 24kHz
–60dBm
–71.5dBm (0.57Vp-p)
–41dBm
(4.3Vp-p)
6 7 6 7
25 DSP
CN61
IC64 IC65 IC66 IC301
RIF
14.2MHz
1.6Vp-p 170mVp-p 230mVp-p
2.4Vp-p 0.6Vp-p 310mVp-p 200mVp-p
L374 L763 L762
4 5
XF371 IC761
BPF
150mVp-p
CN2
TXRF
AF 1kHz
0.13Vp-p 0.63Vrms
9.5mVp-p 1.9Vp-p
5 7 1 4
6 1
10
IC72 IC71 IC69 IC67 SP
AF 1kHz
300mVp-p
CN800
Q783
TXRF
FINAL UNIT (X45-391 A/2)
14.2MHz
1.2Vp-p 5.8Vp-p 200Vp-p
5.8Vp-p 26.5Vp-p 180Vp-p
L8
Q3
L10
ANT
Q1 Q2
Q4