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TS-590S Schematic ( PDF Datasheet ) - Kenwood

Teilenummer TS-590S
Beschreibung HF / 50MHz ALL MODE TRANSCEIVER SERVICE MANUAL
Hersteller Kenwood
Logo Kenwood Logo 




Gesamt 30 Seiten
TS-590S Datasheet, Funktion
TS-590SHF / 50MHz ALL MODE TRANSCEIVER
SERVICE MANUAL
© 2010-9 PRINTED IN JAPAN
B51-8941-00 (N) 283
Phone jack (9P)
(E11-0705-15)
Key top (8key)
(K29-9466-02)
Panel
(A62-1176-02)
Front glass
(B10-2799-02)
Key top (5key)
(K29-9469-02)
Knob (RIT)
(K29-9471-03)
Knob (MULTI)
(K29-9456-23)
Foot (Front)
Key top (25key)
(J02-0442-04)x2 (K29-9467-02)
Knob (Main knob) Key top (20key) Knob (Inside/HI)
(K21-1107-13)
(K29-9468-02) (K29-9477-03)
Knob (Outside/SQL,RF)
(K29-9391-13)x2
RF coaxial receptacle (Round)
(E06-0858-25)
Foot (Front)
(J02-0440-04)
Knob (Outside/LO) Knob (Inside/NOTCH,AF)
(K29-9478-03)
(K29-9390-03)x2
RF coaxial receptacle (M)
(E04-0167-15)x2
Lead wire with connector (EXT.AT) Lead wire with terminal
(E37-0891-25)
(E37-1480-05)
Sub socket (D)
(E58-0529-05)
3.5D phone
jack (3P)
(E11-0414-15)
DIN socket
(E06-0752-15)
Phone jack (9P)
(E11-0705-15)
Foot (Back)
(J02-0475-05)x2
Rectangular receptacle DIN socket
3.5D phone jack (3P) Pin jack
(E58-0537-05)
(E56-0408-15) (E11-0455-05)
(E13-0166-25)x2
This product complies with the RoHS directive for the European market.
This product uses Lead Free solder.






TS-590S Datasheet, Funktion
TS-590S
CIRCUIT DESCRIPTION
and then goes through BPF and is output as LO1. When
RX-2 path is selected or when transmitting, 36.5625MHz to
66.5475MHz is output, amplified by the broad band ampli-
fier (IC804), and then doubled in the multiplier (D652), goes
through BPF, and is output as 73.120MHz to 133.095MHz
LO1.
LO2 (the second local oscillator)
The reference oscillating circuit’s output signal 15.6MHz
signal passes through a buffer (Q502) and is doubled in
a multiplier (Q503) to generate a 31.2MHz signal. The
31.2MHz signal is also used as the DDS (IC601)’s reference
frequency, and therefore its resistance is divided. Then, the
31.2MHz signal is doubled in multipliers (Q504, Q505) to
generate a 62.4MHz signal.
The 62.4MHz signal’s high harmonic is cut in the BPF
and the signal is amplified in the amplifier (Q506) to gener-
ate LO2. If IFB is selected, the diode switch (D501) cuts the
LO2 output.
LO3 (the third local oscillator)
The LO3 used in the modulator and the detector is gen-
erated in the DDS (IC601). The DDS output signal passes
through the buffer (Q602) and LPF to generate LO3.
D680 BPF D681
D659 D653 BPF D679
D657 BPF D662
Q663 LPF
D667
LO1
AMP
D655 LPF D660
D671 HPF
D669 LPF D663
D652
Q808
LPF
L651
D651
D670
IC803
DDS
IC804
AMP
Doubler
Buffer
Q801
Buffer
IC801
PLL
X502,Q501
15.6MHz
Q502 Q503 Q504,Q505 Q506
D501 LPF
D654 LPF D661
BPF D668
LPF
Q804
Q806
VCO
BPF
FM MOD
Buffer
LO2
Option
SO-3
Buffer Doubler
Doubler Buffer
Q601
Buffer
IC601
DDS
Q602 LPF
Buffer
Fig. 2 Reference signal generator, LO1/ LO2/ LO3
LO3
6

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TS-590S pdf, datenblatt
TS-590S
CIRCUIT DESCRIPTION
IF input
(10.695M/11.374M)
FM
D526
Switching
IC591
FM IC
CF591
FM
(AF)
IC592
FM AF Amp
455kHz BPF
BW: 12kHz
Option Filter
SSB, CW, AM
BW: 9kHz
D551,D552
RX 3rd Mixer
Q551
IF Amp
SSB, CW,AM
(24kHz)
FM
(AM)
SSB, CW, AM
(24kHz)
X57-785 (A/2)
IC631
Multiplexer
X53-446 (A/3)
IC64(A/2) IC65(A/2)
Buffer Active LPF
RIF
IC64(B/2)
Active LPF
IC65(B/2)
Active LPF
Headphone (first priority)
(X54-370 F/6)
Ext. Speaker (second priority)
(X57-785 A/2)
Int. Speaker (third priority)
(X45-391 A/2)
Q62 IC69 IC69 IC71
IC67 AF Mute (A/2) (B/2) (B/2)
AF
AF Power
Amp AMU
Active LPF
IC66
A/D
Conv.
IC301
DSP
IC72
D/A
Conv.
Fig. 5 From second IF to AF output
First Mixer
There are 2 types of first mixers: for IF frequency
11.374MHz RX-1 path, and for IF frequency 73.095MHz
RX-2 path.
The first mixer for the RX-1 path is a quad-balance type
mixer by MOS FET (Q263 to Q266), and mixes with LO1
(12.495 to 32.195MHz) which is approximately +18dBm,
and converts into the first IF (11.374MHz). Approximately
2.6V bias is added to LO1 in order to suppress distortion.
The first mixer for the RX-2 path is a quad-balance type
mixer by MOS FET (Q321 to Q324), and mixes with LO1
(73.120 to 133.095MHz) which is approximately +18dBm,
and converts into the first IF (73.095MHz). No bias is added
to this LO1.
The volume resistance (VR261, VR321) within the first
mixer circuit is used to adjust mixer balance. After replac-
ing the MOS FET (Q263~Q266, Q321~Q324), transformer
(L261, L262, L264, L323, L324, L326), volume resistance
(VR261, VR321), or TX-RX unit (X57-785 A/2), adjust the
mixer balance in the adjustment mode.
L261 VR261
RF
Q263
Q265 +14V
L264 1st IF
11.374MHz
Q264
Q266
LO
12.495~32.195MHz
L262
+2.6V
Fig. 6 First mixer circuit of the RX-1 path
12

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