KENWOOD TS-590SG SERVICE MANUAL

HF / 50MHz TRANSCEIVER

TS-590SG

SERVICE MANUAL

Phone jack (9P) (E11-0705-15)

Key top (8key)

K2K-0121-00)

（

Foot (Front) (J02-0442-04)x2

RF coaxial receptacle (Round) (E06-0858-25)

RF coaxial receptacle (M) (E04-0167-15)x2

Key top (25key) (K2K-0122-00)

Panel (A6C-0009-00)

Knob (Main knob) (K2B-0001-00)

Foot (Front) (J02-0440-14)

Front glass (B1A-0022-00)

Key top (20key) (K2K-0123-00)

Knob (Outside/LO) (K2K-0125-00)

Lead wire with connector (EXT.AT) (E37-0891-25)

Key top (5key) (K2K-0124-00)

Knob (RIT/XIT) (K29-9471-03)

Knob (Inside/HI) (K29-9477-03)

Knob (Inside/NOTCH,AF) (K29-9390-03)x2

Lead wire with terminal (E37-1480-05)

Knob (MULTI/CH, PF-C (K29-9456-23)

Knob (Outside/SQL,RF) (K29-9596-03)x2

）

Sub socket (D) (E58-0529-05)

Rectangular receptacle (E58-0537-05)

This product complies with the

3.5D phone jack (3P) (E11-0414-15)

DIN socket (E56-0408-15)

directive for the European market.

RoHS

DIN socket (E06-0752-15)

3.5D phone jack (3P) (E11-0455-05)

Phone jack (9P) (E11-0705-15)

Foot (Back) (J02-0475-15)x2

Pin jack (E13-0166-25)x2

ThisproductusesLeadFreesolder.

TS-590SG

DISASSEMBLY FOR REPAIR .................................................. 3

CIRCUIT DESCRIPTION .......................................................... 5

COMPONENTS DESCRIPTION ............................................. 20

SEMICONDUCTOR DATA ...................................................... 27

PARTS LIST ............................................................................ 34

EXPLODED VIEW ................................................................... 63

PACKING ................................................................................ 66

ADJUSTMENT ........................................................................ 67

TERMINAL FUNCTION .......................................................... 81

PC BOARD

FINAL UNIT (X45-391X-XX) ................................................ 88

CONTROL UNIT (XC1-021X-XX) (A/3) ............................... 92

CONTROL UNIT (XC1-021X-XX) (B,C/3) ........................... 96

DISPLAY UNIT (XC1-0220-00) .......................................... 100

TX-RX UNIT (XC1-024X-XX) ............................................. 104

INTERCONNECTION DIAGRAM .......................................... 108

SCHEMATIC DIAGRAM ....................................................... 110

BLOCK DIAGRAM ................................................................ 136

LEVEL DIAGRAM ................................................................. 138

OPTIONAL ACCESSORIES

PS-60 (DC Power Supply) ................................................ 140

ARCP-590G (Radio Control Program) ............................ 140

ARHP-590G (Radio Host Program) ................................. 140

ARUA-10 (USB Audio Controller) ................................... 140

SPECIFICATIONS ................................................................. 141

Document Copyrights

rights reserved.

No part of this manual may be reproduced, translated, distributed, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or other- wise, for any purpose without the prior written permission of JVC KENWOOD Corporation.

Disclaimer

While every precaution has been taken in the prepara- tion of this manual, JVC KENWOOD Corporation assumes no responsibility for errors or omissions. Neither is any li- ability assumed for damages resulting from the use of the information contained herein. JVC KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes.

DISASSEMBLY FOR REPAIR

TS-590SG

Removing the torque changeover lever (G02-1858-03)

1. Insert the tip of a ﬂ at-head screwdriver (or other imple- ment) under the tab of the torque changeover lever, then lift the tab using the tip of the ﬂ at-head screwdriver. (a)

Caution:

ing it.

2. Turn the lever section of the torque changeover lever to the right, as in the position described in step 1. (b)

3. Lift the torque changeover lever and remove it from the panel. (c)

Be careful not to damage the panel when lift-

Mounting the torque changeover lever (G02-1858-03)

1. Insert the torque changeover lever by aligning the three tabs of the panel. (a)

2. Slightly turn the lever section of the torque changeover lever to the left (c) while pressing the surface near the tab at the lower right of the torque changeover lever (b).

Caution:

caught by the lower right tab of the panel.

3. Turn the lever section of the torque changeover lever to the left (e) while pressing the surface near the tab at the upper right of the torque changeover lever (d), then mount it onto the panel.

Confirm that the torque changeover lever is

;

TS-590SG

DISASSEMBLY FOR REPAIR

Precautions for Reassembly

Perform the following steps when assembling the bottom side of the transceiver.

1. Separate the two coaxial cables (E37-1647-05, E37- 1648-05) as shown in the ﬁ gure.

2. Push the two ﬂ at cables (E37-1491-15, E37-1492-15) into the gap of the chassis so they do not come into contact with the cabinet.

Coaxial cable (E37-1647-05)

Coaxial cable (E37-1648-05)

Flat cable (E37-1492-15)

Flat cable (E37-1491-15)

Separate the two coaxial cables

Push the flat cables into the gap of the chassis

CIRCUIT DESCRIPTION

Frequency Conﬁ guration

Figure 1 shows the frequency conﬁ guration of this trans-

ceiver.

While transmitting, FM mode operates in a double con- version and other modes (AM, SSB, CW, FSK) operate in a triple conversion.

While receiving, the ﬁ rst IF operates in 73.095MHz triple conversion. In modes other than FM, the third IF is 24kHz, and the IF signal is converted by an A/D converter and in-

TS-590SG

put into DSP. The FM mode is detected in the FM IC, and the audio signal is converted by an A/D converter and input into the DSP. Under the following conditions, the ﬁ rst IF op- erates its reception in 11.374MHz double conversion.

1) Modes other than AM or FM

2) Amateur band within the 1.8/3.5/7/14/21MHz bands This specification restricts to the use of these main amateur bands consisting of BPF to achieve sufﬁ cient image ratio when performing down conversion on the RX-1 path.

3) DSP ﬁ lter’s bandwidth is 2.7kHz or lower

ANT

RX-1

RX-2

TX MIX

RX MIX

DDS

AD9951

11.374MHz

IFB

73.095MHz

IFA

1st IF

AD4111

PLL

VCO

X502

15.6MHz

455kHz

TX/RX

MIX

11.374MHz

/10.695MHz

2nd IF

MIX

except FM

3rd IF

FM IC

TA31136FNG

RX MIX

DDS

AD9835

Fig. 1 Frequency conﬁ guration

24kHz

FM MOD

ADC

DAC

DSP

DAC

ADC

AF OUT

MIC IN

Reference Signal Generator

The reference frequency (fstd), which is used to control the individual LO frequencies, oscillates at 15.6MHz in a crystal oscillation circuit (X502, Q501). This 15.6MHz signal passes through a buffer (Q502) and is doubled in a multi- plier (Q503) to generate a 31.2MHz signal. The 31.2MHz signal is used as a reference signal for LO3 (the third local oscillator) DDS (IC601). The 31.2MHz signal is doubled in multipliers (Q504, Q505) to generate a 62.4MHz signal. The

62.4MHz signal is used as a reference signal for LO1 (the ﬁ rst local oscillator) PLL (IC801).

The SO-3 (TCXO unit: 15.6MHz) is conﬁ gured as an op- tion in this transceiver, so that you can replace the crystal oscillation circuit (X502, Q501) with the SO-3. When using the SO-3, remove the CN903 and CN904 short jumper wires in order to stop the operation of the crystal oscillation circuit (X502, Q501).

LO1/ LO2/ LO3

LO1 (the ﬁ rst local oscillator)

The VCO (Q806) oscillates at 393.6MHz or 388.8MHz. The oscillation output of this VCO passes through the BPF and is input to pin 6 of the PLL (IC801). This input signal is divided into 1/N within the PLL. Also, the 62.4MHz signal (15.6MHz reference frequency x 4) is input into PLL pin 8 and divided into 1/R within the PLL. By a phase comparator in the PLL, the frequency divided into 1/N and the frequen- cy divided into 1/R are compared, and then the frequency is locked. The comparison frequency (fø) at this time is 120kHz when transmitting FM, and 4.8MHz otherwise.

393.6MHz or 388.8MHz signal locked by PLL (IC801) would be used as reference by DDS (IC803). The output signal from DDS (IC803) is 12.495MHz to 32.195MHz when RX-1 path is selected, ampliﬁ ed at the broad band amplifier (IC804), and then goes through BPF and is

TS-590SG

CIRCUIT DESCRIPTION

output as LO1. When RX-2 path is selected or when trans- mitting, 36.5625MHz to 66.5475MHz is output, amplified by the broad band ampliﬁ er (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

D680 D681

D659

D653

D657

D652

Q808

Buffer

X502,Q501

15.6MHz

IC803

DDS

Q502

LPF

Q503

IC804

AMP

Q504,Q505

D651

Doubler

Q506

L651

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 ampliﬁ ed in the ampliﬁ er (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.

BPF

Q801

Buffer

D501

D679

D662

D671

D670

IC801

LPF

PLL

HPF

Q663

AMP

D655 D660

D669

D654

LPF

Q806

VCO

Q804

Buffer

LPF

BPF

D667

D663

D661

D668

BPF

FM MOD

LO1

LO2

Option

SO-3

Buffer

Doubler

Q601

Buffer

BufferDoubler

IC601

DDS

Q602

Buffer

LPF

LO3

Fig. 2 Reference signal generator, LO1/ LO2/ LO3

TS-590SG

CIRCUIT DESCRIPTION

IF=73M

Frequency: 0.03~60MHz

HF TX/RX

LO1

Filter offset 1 +(DSPFC)/2 +1.5k/2 -(DSPFC)/2 –1.5k/2

RIT (Δ RIT)/2 - (Δ RIT)/2 - (Δ RIT)/2 - (Δ RIT)/2 -

XIT - (Δ XIT)/2 - (Δ XIT)/2 - (Δ XIT)/2 - (Δ XIT)/2

CAR correction IF10M_2.7k

HF TX/RX

LO1

Filter offset 1 –(SHIFT/2)/2 –(SHIFT/2)/2 –(SHIFT/2)/2 –(SHIFT/2)/2 0 0 0 0

RIT (Δ RIT)/2 - (Δ RIT)/2 - (Δ RIT)/2 - (Δ RIT)/2 -

XIT - (Δ XIT)/2 - (Δ XIT)/2 - (Δ XIT)/2 - (Δ XIT)/2

CAR correction IF10M_2.7k

+(CAR1)/2 +(CAR1)/2 +(CAR1)/2 +(CAR1)/2 +(CAR1)/2 +(CAR1)/2 +(CAR1)/2 +(CAR1)/2

USB LSB CW CW-R

RX TX RX TX RX TX RX TX

FSK FSK-R AM FM

RX TX RX TX RX TX RX TX

--------

DDS AD9951 (DEN1)

+(SHIFT-PITCH)/2

DDS AD9951 (DEN1)

–(SHIFT-PITCH)/2

IF=11M

Frequency: 0.03~21.5MHz (Amateur bands within 1.8/3.5/7/14/21MHz band only)

HF TX/RX

LO1

Filter offset 1 +(DSPFC) –(DSPFC) +(SHIFT-PITCH) –(SHIFT-PITCH) –(SHIFT/2) –(SHIFT/2)

RIT (Δ RIT) (Δ RIT) (Δ RIT) (Δ RIT) (Δ RIT) (Δ RIT)

CAR

correction

(Δ RIT): RIT frequency variable amount (–9.99~+9.99kHz) (Δ XIT): XIT frequency variable amount (–9.99~+9.99kHz) (SHIFT): FSK shift width frequency (170Hz, 200Hz, 425Hz, 850Hz, Initial value:170Hz) CAR correction: SSB IF-Filter adjustment volume. 0 when using Narrow option ﬁ lter. (CAR1): IF 10.695MHz, SSB Normal ﬁ lter compensation value (CAR2): IF 11.374MHz, Normal ﬁ lter compensation value (CAR3): IF 11.374MHz, Narrow ﬁ lter compensation value

IF11M_2.7k +(CAR2) –(CAR2) +(CAR2) +(CAR2) - -

IF11M_500 +(CAR3) –(CAR3) +(CAR3) +(CAR3) - -

USB LSB CW CW-R FSK FSK-R

RX RX RX RX RX RX

DDS AD9951 (DEN1)

Table 1-1 LO1 frequency shift data

TS-590SG

CIRCUIT DESCRIPTION

USB LSB CW CW-R

LO3

RX<21.3M,

21.5≤RX

Filter offset 1

CW pitch - - - - - - - - -

FSK tone - - - - - - - - -

CAR cor-

rection

CAR cor-

rection

CAR correction: SSB IF-Filter adjustment volume. 0 when using Narrow option ﬁ lter. (CAR1): IF 10.695MHz, SSB Normal ﬁ lter compensation value (CAR2): IF 11.374MHz, Normal ﬁ lter compensation value (CAR3): IF 11.374MHz, Narrow ﬁ lter compensation value

IF10M_2.7k +(CAR1)

IF11M_2.7k

IF11M_500

LO3

Filter offset 1 0 0 0 0 0 0 0 0

CW pitch - - - - - - - -

FSK tone - - - - - - - -

IF10M_2.7k - - - - ----

IF11M_2.7k - - - - - - - -

IF11M_500 - - - - - - - -

–48k+(DSPFC)

RX TX RX TX RX TX RX TX

IF73M

21.3≤RX, RX<21.5

+(DSPFC)

FSK FSK-R AM FM

IF11M

–48k+(DSPFC)

+(CAR2) +(CAR2) +

+(CAR3) +(CAR3) +

TX RX TX RX TX RX TX

–46.5k –(DSPFC) –1.5k

+(CAR1) +

DDS AD9835 (DEN2)

(CAR1)+(CAR1)

(CAR2)

(CAR3)

+(SHIFT-PITCH)

+(CAR1) +(CAR1) +(CAR1) +(CAR1)

+(CAR2) +(CAR2)

+(CAR3) +(CAR3)

–(SHIFT-PITCH)

Table 1-2 LO3 frequency shift data

Receiver Circuit

In an amateur frequency band or mode that requires anti-proximate interference performance, the receive signal passes through the double conversion RX-1 path, and in other frequency bands and modes, it passes through the triple conversion RX-2 path. (Refer to table 2)

Mode SSB CW FSK AM FM

RX-1 path

RX-2 path

Table 2

Conversion

method

IF fre-

quency

Conversion

IF fre-

quency

1st 11.374MHz -

2nd 24kHz -

method

1st 73.095MHz

2nd 10.695MHz

3rd 24kHz 455kHz

Mode, conversion method, and IF frequency

Double -

Triple

From the antenna terminal to the preampliﬁ er (Q236)

The receive signal from the antenna terminals (ANT1/ ANT2) passes through the antenna changeover relay (K44) in the Final unit (X45-398 A/2), the antenna tuner’s IN/ THROUGH changeover relay (K45), the transmission/recep- tion changeover relay (K46), and an image ﬁ lter, and is sent from CN51 to the TX-RX unit (XC1-024 A/2)’s CN100 (RAT) through a co-axial cable.

The signal input into the TX-RX unit passes through the RX ANT relay (K101) and the relay (K103) that corresponds to the ANT OUT function, and then enters the attenuation circuit (ATT) which is approximately 12dB.

When ANT OUT functions during receiving, the signal received through the distributor (splitter) from the DRV OUT terminal and the DRV ANT relay (K800) can be output. If this signal is input to an external receiver, it is possible to receive and to make use of the scope function of the receiver. This can be switched to approximately 20dB by removing the CN101 short jumper. Then, the signal passes through IF trap circuit, the surge absorption limiter, and the BC band attenuating circuit (removes 30kHz to 1.705MHz), and enters the BPF. In the BC band attenuating circuit, in order to avoid interference by high-output broadcasting sta- tions, 11.7MHz and 15.5MHz trap circuit is inserted into E type only.

CIRCUIT DESCRIPTION

TS-590SG

The BPF divides in the range as shown in table 3. The BC band’s BPF includes ATT for avoiding cross- modulation by medium wave band high input signal (ATT ON: CN102=open, CN103=short, ATT OFF: CN102=short, CN103=open). The transmit signal also passes through the BPF when transmitting.

The preamplifier (Q236) receives the signal passed through the BPF. In this model, it is an emitter grounding circuit which uses a bipolar transistor. Q239 switches the emitter’s returning amount to adjust the gain. Approximately 20dB is gained in 21.5 to 60MHz and approximately 12dB in other frequencies. The preampliﬁ er circuit can be passed by turning off the PRE display with the preampliﬁ er key.

Band Filter range

135kHz/475kHz 30~522kHz

BC 522kHz~1.705MHz

1.8MHz 1.705~2.5MHz

3.5MHz 2.5~4.1MHz

5MHz 4.1~6.9MHz

7MHz 6.9~7.5MHz

10MHz

14MHz 13.9~14.5MHz

18MHz

21MHz

24MHz/28MHz 21.5~30.0MHz

50MHz (TX) 49.0~54.0MHz

50MHz (RX) 30.0~60.0MHz

7.5~10.5MHz

10.5~13.9MHz

14.5~21.5MHz

Table 3 BPF range

ANT1 ANT2

K44

K46K45

signal

CN51

XC1-024 (A/2)X45-398 (A/2)

RX ANT

SPLITTER

CN100 K101 K103

30kHz~ 522kHz

522kHz~

1.705MHz

BC TRAP

(EU TRAP)

DRV/ANTOUT

K800

LPF

BPF

1.705~60MHz

BPF

ATT

x11

TX(DRVOUT)

ATT

–12dB

(–20dB)

ATT

LPF

~60MHz

PRE OFF

to 1st Mixer

Q236

PRE AMP

Fig. 3 From antenna terminal to preampliﬁ er (Q236)

TS-590SG

CIRCUIT DESCRIPTION

From the preampliﬁ er (Q236) to the second IF frequency (10.695MHz/11.374MHz)

The signal from the preamplifier (Q236) output to the second IF ampliﬁ er 1 (Q451) is spread into 2 paths: RX-1 and RX-2, depending on the frequency band (refer to table

4). The RX-1 path is selected when the “L” signal is added to Q273, and the RX-2 path is selected if the “H” signal is added.

The RX-1 path signal passes through the LPF for IF trap, is integrated with LO1 (12.495 to 32.195MHz) in the quad- balance ﬁ rst mixer (Q263 to Q266), and is then converted to the ﬁ rst IF (11.374MHz). The ﬁ rst IF signal is split further into two paths when NB1 is selected and other than NB1 is selected. If NB1 is not selected, the ﬁ rst IF signal passes through the 2-pole MCF (XF301) through path. Signals from both paths then enters the second IF ampliﬁ er 1 (Q451).

The RX-2 path signal passes through the LPF for IF trap, is integrated with LO1 (73.120 to 133.095MHz) in the quad- balance ﬁ rst mixer (Q321 to Q324), and is then converted to the ﬁ rst IF (73.095MHz). The ﬁ rst IF signal passes through the 2-pole MCF (XF371), and by the trans-feedback type NFB (negative feedback) ﬁ rst IF ampliﬁ er (Q391), is ampli- ﬁ ed by approximately 12dB. The ampliﬁ ed signal is mixed with LO2 (62.4MHz) in the second mixer (D422, D423), converted to the second IF (10.695MHz), and then enters the second IF amplifier 1 (Q451). The second mixer is a passive type that uses a diode, and is a bilateral circuit that converts both receive signal's frequency at the time of re- ception and transmission signal's frequency at the time of transmission.

The second IF signal that passed through the RX-1 or RX-2 path is ampliﬁ ed by approximately 13dB in the second IF ampliﬁ er 1 (Q451), and is then divided into 2 paths: the NB (noise blanker) circuit and the blanking circuit (D461 to D464). Blanking is carried out by D461 to D464.

Then, the second IF signal passes through the IF ﬁ lter. One of 5 filters is selected, depending on the frequency and the mode (refer to table 5).

The second IF signal that passes through the IF ﬁ lter en- ters the AGC circuit which consists of the MOSFET (Q541). The control voltage output from the DSP changes the at- tenuation of the signal passing through. The signal is ampli- ﬁ ed by approximately 20dB at the second IF ampliﬁ er (Q521, Q522) and passed through the ATT diode (D525). The gain difference between the RX-1 and RX-2 paths is then com- pensated.

frequency

10.695MHz

11.374MHz

IF ﬁ lter

15kHz

6kHz

2.7kHz

500Hz

FM AM SSB FSK CW

4 4

Mode

444

Table 5 Selecting an IF ﬁ lter

Band BPF selection classiﬁ cation IF switching frequency criteria

135kHz/475kHz f <522kHz f <522kHz

BC 0.522≤ f <1.705MHz 0.522≤ f <1.705MHz 73M RX-2

1.8MHz 1.705≤ f <2.50MHz

3.5MHz 2.50≤ f <4.10MHz

5MHz 4.10≤ f <6.90MHz 4.10≤ f <6.90MHz 73M RX-2

7MHz 6.90≤ f <7.50MHz 6.90≤ f <7.50MHz 11M RX-1

10MHz

14MHz 13.9≤ f <14.5MHz 13.9≤ f <14.5MHz 11M RX-1

18MHz

21MHz 20.9≤ f <21.5MHz 11M RX-1

24MHz/28MHz 21.5≤ f <30.0MHz 21.5≤ f <30.0MHz 73M RX-2

50MHz (TX) 49.0≤ f <54.0MHz 49.0≤ f <54.0MHz - -

50MHz (RX) 30.0≤ f <60.0MHz 30.0≤ f <60.0MHz - 73M RX-2

7.50≤ f <10.5MHz 7.50≤ f <10.5MHz 73M RX-2

10.5≤ f <13.9MHz 10.5≤ f <13.9MHz 73M RX-2

14.5≤ f <21.5MHz

1.705≤ f <2.10MHz 11M RX-1

2.10≤ f <3.40MHz 73M RX-2

3.40≤ f <4.10MHz 11M RX-1

14.5≤ f

20.9MHz 73M RX-2

TX IF RX IF

73M

IF frequency

73M RX-2

Table 4 Criteria for selecting the RX-1 or RX-2 path

CIRCUIT DESCRIPTION

TS-590SG

from Pre Amp (Q236)

LO1

IF input

(10.695M)

IF input

(11.374M)

RX-1

RX-2

D443

D441

2nd IF Amp1

LPF

11.374M NOTCH

LPF

~60MHz

Q281,Q282

LO1 Amp1

D461~D464

Blanking

Q451

Q263~Q266

1st Mixer

Q321~Q324

1st Mixer

Q351,Q352

LO1 Amp2

73.125~133.095MHz13.174~32.195MHz

D471

11.374MHz

73.095MHz

XF472

10.695M 15k

XF471

10.695M 6k

XF473

XF301

MCF

XF371

MCF

D475D474

D477D472

1st IF Amp

D476

11.374MHz

Q391

TX TX

Q541

AGC AMP

AGCV

D422,D423

2nd Mixer

LO2 Amp

LO2

62.4MHz

Q521,Q522

2nd IF Amp2

10.695MHz

Q431

D525

ATT

IFGC

to 2nd IF Amp1 (Q451)

IF output (10.695M/

11.374M)

10.695M 2.7k

XF474

11.374M 2.7k

XF475

11.374M 500

Fig. 4 From the preampliﬁ er (Q236) to the second IF frequency (10.695MHz/11.374MHz)

From the second IF to the AF output

The signal that passed through D525 then goes through D526 and enters the FM wave detecting IC (IC591) in FM mode, and the AM/SSB/CW/FSK wave detecting mixer (D551, D552) in other modes.

The FM mode signal is mixed with LO3 (10.240MHz) in the FM detecting IC (IC591), and converted into the third IF (455kHz). The third IF signal passes through the ceramic ﬁ lter (CF591), demodulated into audio signals, and is then ampliﬁ ed by the FM AF ampliﬁ er (IC592).

Signals of modes other than FM are mixed with LO3 (RX- 1 path: 11.398MHz, RX-2 path: 10.719MHz) in the AM/SSB/ CW/FSK wave detecting mixer (D551, D552), are converted into the third IF (24kHz), and are then ampliﬁ ed by the third IF ampliﬁ er (Q551).

D477D472

D478D473

Signals of FM mode and modes other than FM are sent from the TX-RX unit (XC1-024 A/2) RIF connector (CN600) to the Control unit (XC1-021 A/3)’s CN61.

The signal input into the Control unit (XC1-021 A/3) is ampliﬁ ed in the operation ampliﬁ er (IC64, IC65), A/D con- version is carried out by the A/D converter (IC66), and then the DSP (IC301) ﬁ ltering, volume control, subtone decod- ing, etc. are carried out. The output signal from the DSP is converted by the D/A converter (IC72), ampliﬁ ed as an au- dio signal in the AF power ampliﬁ er (IC67), and is then sent from the Control unit (XC1-021 A/3) AF connector (CN65) to the TX-RX unit (XC1-024 A/2) CN3, and output to the PHONES jack (J951) (ﬁ rst priority), EXT.SP jack (J1) (second priority), or internal speaker (third priority).

TS-590SG

CIRCUIT DESCRIPTION

(10.695M/11.374M)

Headphone (first priority)

Ext. Speaker (second priority)

Int. Speaker (third priority)

IF input

(AF)

SSB, CW, AM

(24kHz)

(XC1-022 F/6)

(XC1-024 A/2)

(X45-398 A/2)

SSB, CW, AM

D526

Switching

XC1-024 (A/2) XC1-021 (A/3)

IC631

Multiplexer

CF591

455kHz BPF

BW: 12kHz

Option Filter

BW: 9kHz

D551,D552

RX 3rd Mixer

IC67

AF Power

Amp

IC591 FM IC

RIF

AF Mute

IC64(B/2)

Active LPF

Q62

AMU

IC592

FM AF Amp

Q551

IF Amp

IC64(A/2)

Buffer

IC69

(B/2)

(A/2)

Active LPF

(AF)

SSB, CW,AM

(24kHz)

IC65(A/2)

Active LPF

IC65(B/2)

Active LPF

IC71

(B/2)

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 ﬁ rst mixer for the RX-1 path is a quad-balance type mixer by JFET (Q263 to Q266), and mixes with LO1 (12.495 to 32.195MHz) which is approximately +18dBm, and con- verts into the ﬁ rst IF (11.374MHz). Approximately 2.6V bias is added to LO1 in order to suppress distortion.

The ﬁ rst mixer for the RX-2 path is a quad-balance type mixer by JFET (Q321 to Q324), and mixes with LO1 (73.120

Q263 Q265

L261

12.495~32.195MHz

VR261

Q264 Q266

L262

to 133.095MHz) which is approximately +18dBm, and con- verts into the ﬁ rst 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 JFET (Q263~Q266, Q321~Q324), transformer (L261, L262, L264, L323, L324, L326), volume resistance (VR261, VR321), or TX-RX unit (XC1-024 A/2), adjust the mixer bal- ance in the adjustment mode.

+14V

L264

1st IF

11.374MHz

+2.6V

Fig. 6 First mixer circuit of the RX-1 path

CIRCUIT DESCRIPTION

TS-590SG

Q321 Q323

L323

73.120~133.095MHz

VR321

Q322 Q324

L324

Fig. 7 First mixer circuit of the RX-2 path

MCF Adjustment

There are 2 types of MCFs: for IF frequency 11.374MHz

RX-1 path, and for IF frequency 73.095MHz RX-2 path.

The RX-1 path MCF (XF301) is a ﬁ lter which consists of a 2-pole MCF, whose center frequency is 11.374MHz and passband width is 6kHz.

The RX-2 path MCF (XF371) is a ﬁ lter which consists of a 2-pole MCF, whose center frequency is 73.095MHz and passband width is 15kHz. Since the XF371 terminal imped- ance is 2.5k, the impedance is converted using variable coils (L326, L374, L375, L376).

+14V

L326

1st IF

73.095MHz

The MCF can be adjusted by connecting a tracking gen- erator to the MCF adjustment connector (CN303, CN304), and then rotating the variable coil (L326, L374, L375, L376). After replacing the MCF (XF371), variable coil (L326, L374, L375, L376), or TX-RX unit (XC1-024 A/2), adjust the MCF in the adjustment mode.

from 1st Mixer

73.095MHz

Tune connector Tune connector

+8V

CN303

L375

+8V

L376XF371L374L326

1st IF Amp1

12dB

CN304

to 2nd Mixer

73.095MHz

Fig. 8 RX-2 path MCF circuit

TS-590SG

CIRCUIT DESCRIPTION

IF Filter

In order to thoroughly remove the interference frequen- cy and components of the image frequency, analog ﬁ lters corresponding to multiple bandwidths have been placed in the IF stage in addition to the BPF placed in the front stage.

Crystal ﬁ lters (XF474, XF475) for the ﬁ rst IF (11.374MHz) are inserted in the RX-1 path where the anti-adjacent in- terference characteristic is enhanced. MCF (XF301) is

Item XF301: L71-0656-15 XF474: L71-0657-05 XF475: L7B-0002-00

Nominal center frequency 11.374MHz 11.374MHz 11.374MHz

Pass bandwidth ±3kHz or more at 6dB ±1.35kHz or more at 6dB ±250Hz or more at 6dB

Attenuation bandwidth ±17.5kHz or less at 60dB ±4kHz or less at 60dB ±0.75kHz or less at 60dB

Ripple 1dB or less 2dB or less 2dB or less

Insertion loss 3dB or less 6dB or less Within 5±2dB

Guaranteed attenuation 70dB or more at fo±1MHz 80dB or more at fo±1MHz 80dB or more at fo±1MHz

Center frequency devia- tion

Terminating impedance 1k // 6pF 900 // 9pF 100 // 90pF

±500Hz at 6dB ±150Hz at 6dB ±150Hz at 6dB

inserted for bandwidth capping and delay when NB func- tion is operating. In the RX-2 path, the following ﬁ lters are inserted: MCF (XF371) for the ﬁ rst IF (73.095MHz), crystal ﬁ lter (XF473) for the second IF (10.695MHz) and ceramic ﬁ lter (CF591) for the third IF (455kHz for FM only).

Item XF371: L71-0605-05 XF472: L71-0230-15 XF471: L71-0664-05 XF473: L71-0569-15

Nominal center frequency 73.095MHz 10.695MHz 10.695MHz 10.695MHz

Pass bandwidth ±7.5kHz or more at 3dB ±7.5kHz or more at 3dB ±3kHz or more at 6dB ±1.35kHz or more at 6dB

Attenuation bandwidth ±35kHz or less at 40dB ±25kHz or less at 18dB ±40kHz or less at 60dB ±300kHz or less at 60dB

Ripple 1dB or less 0.5dB or less 2dB or less 2dB or less

Insertion loss 3dB or less 2dB or less 3dB or less 6dB or less

70dB or more at

Guaranteed attenuation

Center frequency devia- tion

Terminating impedance 2.5k // –0.5pF 3k // 2pF 1.2k // 6pF 1.2k // 7pF

Item CF591: L72-0998-05

Nominal center frequency 455kHz

Pass bandwidth ±6kHz or less at 6dB

Attenuation bandwidth ±12.5kHz or less at 50dB

Ripple 2dB or less

Insertion loss 6dB or less

Guaranteed attenuation

Center frequency devia- tion

Terminating impedance 2k

fo+(500~1000kHz) 70dB or more at fo–(200~1000kHz)

±1.5kHz at 3dB - ±1kHz at 6dB ±150Hz or less at 6dB

35dB or more at fo±100kHz

±1.0kHz



30dB or more at fo±1MHz 60dB or more at fo±1MHz

60dB or more at fo±300kHz

Table 6 IF ﬁ lter

CIRCUIT DESCRIPTION

Noise Blanker Circuit (NB Circuit)

Noise detection circuit

The Noise detecting circuit is the circuit that removes

short frequency pulse noise.

The 10.695MHz or 11.374MHz IF signal passes through the buffer (Q641) in the TX-RX unit (XC1-024 A/2), and is sent from CN674 to the NB unit (XC1-024 B/2) CN667 (NB IF) through a co-axial cable.

The signal input into the NB unit (XC1-024 B/2) is ampli- fied by the 4 stage amplifier (Q651, Q652, Q653, Q663, Q664, Q666), passes through the buffer (Q670), and then noise-detected by D662. This noise-detected voltage switches Q669, turns Q671 ON, attenuates the IF signal in the blanking circuit (D461 to D464) depending on the noise, and removes the pulse noise.

When long-frequency signal is input, the AGC func-

XC1-024 (A/2) XC1-024 (B/2)

IF input

10.695MHz/

11.374MHz

Q641

Buffer

Q651

NB Amp1

Q652/Q653

NB Amp2

AGC

Q663/Q664

NB Amp3

Q666

NB Amp4

TS-590SG

tions and the gains of the NB ampliﬁ er 2 (Q652, Q653), NB amplifier 3 (Q663, Q664), and NB amplifier 4 (Q666) are lowered, which results in low detecting voltage, and Q671 is not turned ON. Thus, the IF signal is not attenuated. Be- cause the AGC time constant is large, a pulse with short frequency does not let the AGC function and the detecting voltage increases, Q671 becomes ON and the blanking cir- cuit can function.

When the NB function is turned ON, the threshold vari- able direct current “NBL” is added to the Q669 emitter from the D/A converter (IC13). By changing the emitter’s voltage, the NB effect can be adjusted. Also, when the IF signal is

10.695MHz, Q654, Q665, and Q668 becomes ON and the NB ampliﬁ er 2, NB ampliﬁ er 3, and NB ampliﬁ er 4’s tuning point changes to 10.695MHz.

Q670

Buffer

Q667

NB AGC Amp

D662

Detection

Q669

Switching

NBL

(Noise Blanker threshold level)

Q671

Switching

BLNK signal (NB blank control)

IBK

Fig. 9 Noise detection circuit

Blanking circuit

The Noise blanking circuit is a circuit which attenuates the IF signal by the signal detected in the noise detection circuit and removes pulse noise.

If pulse noise is not detected in the NB unit, BLNK turns to “H”, Q456 turns to ON and Q455 turns to OFF. Also, diodes D461 to D464 turn OFF and the IF signal is attenu- ated.

Blanking ON: 8V Blanking OFF: 0V

+8V

D461

D462

Blanking ON: 4V Blanking OFF: 1.6V

D463

D464

Q455,Q456 BLNK H: Blanking ON L : Blanking OFF

L462L461

OUTIN

Transmitter Circuit

From transmission signal (TIF) to drive output

The path of the transmission signal (TIF) through the analog switch (IC68) in the Control unit (XC1-021 A/3) is dif- ferent during FM mode and mode other FM.

In FM mode, the transmission signal is switched by the analog switch (IC68), and the frequency is modulated in audio signals into the LO1 (ﬁ rst local oscillator signal). In modes other than FM, the transmission signal is switched by the analog switch (IC68), and then input into the bal- anced mixer (IC701). The 24kHz IF signal and LO3 (third local oscillator signal) are input into this balanced mixer to generate the 10.695MHz IF signal.

The 10.695MHz transmission IF signal passes through the IF ﬁ lter (XF471) with 6kHz bandwidth, and the signal is ampliﬁ ed at the 10M transmission IF ampliﬁ er (Q721). The pin diode (D721) operates the variable attenuator by cur- rent control, and changes the transmission IF signal gain. This variable gain provides the TGC function which controls each band’s transmission gain.

Fig. 10 Blanking circuit

TS-590SG

CIRCUIT DESCRIPTION

The 10.695MHz transmission IF signal is converted to

73.095MHz by the mixer (D422, D423). The pin diode (D741) changes the 73.095MHz transmission IF signal level by changing the impedance through the current ﬂ ow through it. This level variance corrects the transmission signal gain (PGC function) at the time of power control.

from DAC

(IC72)

Drive OUT

TIF

IC68

TIF

except FM

IC701

LO3 TGC LO2

Fig. 11 From transmission signal (TIF) to drive output

From the drive output to the antenna terminal

The transmit signal sent from the TX-RX unit (XC1-024 A/2) to the CN2 (TXRF) of the Final unit (X45-398 A/2) is ampliﬁ ed to the designated power in the ﬁ nal stage, passes through the LPF, and is then output from the antenna ter- minal. This unit includes a relay antenna tuner circuit that operates in all bands.

The transmit signal input into the Final unit (X45-398 A/2) CN2 is ampliﬁ ed by the pre-drive ampliﬁ er (Q1, Q2) and the drive ampliﬁ er (Q3, Q4). Then, the signal's high harmonic is eliminated in the LPF and the signal goes through the pro- gressive wave/reflected wave detection circuit, amplitude phase detection circuit for the antenna tuner, transmit/re- ceive changeover relay (K46), antenna tuner IN/THROUGH changeover relay (K45), antenna changeover relay (K44), and ﬁ nally, output through the ANT1 or ANT2 antenna ter- minal. In order to reduce the transmit/receive changeover relay's operational noise, relays are in a separate unit (X45- 398 B/2).

The MCF (XF371) with 15kHz bandwidth reduces the adjacent spurious components using the 73M transmission IF ampliﬁ er (Q742). And the ALC ampliﬁ er (Q952) varies the second gate and adjusts the gain using the control voltage generated by the ALC control circuit. As with TS-990, a cir- cuit where power spike is not prone to occurred is used for quick response.

XF471

10.695MHz

IC761Q783

LO1 ALC PGC

Q721Q702

XF371

73.095MHz

D721 D722

Q742Q952

D422 D423

D741

The antenna tuner tunes by the combination of the con- denser and the coil. Its operation is the same as in previous models. IC6's phase error signal switches the input side condenser of the tuning circuit, and the IC5 amplitude dif- ference signal switches the output side condenser. The SWR is decided by calculating the voltage of the progres- sive wave and the reﬂ ected wave with the main MCU (XC1- 021 IC306).

This model includes a current protection circuit. The cur- rent running in the ﬁ nal portion is converted to the potential difference of the 1m resistance inserted into a power line, and the potential difference is detected at IC4. When the potential difference is larger than designated, IC4 output activates ALC. This current protection function controls so that the current would not exceed the predetermined value when the current at the ﬁ nal portion is increased for some unexpected reason. There are other protection circuits the same as the ones included in the previous models.

ANT2 ANT1

TX LPF

1.8~50MHz BAND

L40

SWR

L41

Q251

IC6

AT IN

Through

DRV IN

Q2Q1

X45 B/2

K46

K45K45K44

RAT

(TX-RX

unit)

Amplitude ERROR OUT

L42

D252 D251

IC5

Fig. 12 From the drive output to the antenna terminal

VSR VSF

Q252

Phase ERROR OUT

CIRCUIT DESCRIPTION

TS-590SG

Transmit power control

Transmit power control is done in the same way as in the previous models; the ALC circuit controls the ALC voltage using the progressive wave voltage (VSF) and keeps a con- stant output.

The voltage detected in the Final unit (X45-398 A/2) pro- gressive wave voltage and reflection wave voltage (VSR) detection circuits is sent to the TX-RX unit’s (XC1-024 A/2) CN5. The progressive wave voltage is the intended power (100W, 20W) divided into a suitable voltage by the resis- tance, and input into the differential ampliﬁ ers consisting of IC802.

The output voltage of IC802 (1/2) increases when the progressive wave voltage rises, the current at the base of Q803 increases thereby reduces the collector voltage where the ALC time constant CR is connected. The reduc- tion in this collector voltage reduces the output voltage of the buffer (IC802 1/2), and the ALC voltage from the resis- tance voltage divider drops. If the ALC voltage (2.5V when the ALC voltage is not added) goes down, the IF ampliﬁ er’s (Q952) second gate voltage goes down and the gain is de- creased.

TX ATT

TGC

TX IF Amp (ALC)

When transmitting AM, Q802 is turned on approximately 50ms after transmission, and the ALC voltage is controlled with the average power. The input voltage of pin 2 of IC802 (1/2) used as the ALC reference voltage is controlled by the adjustment value (POC) from the main MCU and output from pin 5 of the D/A converter (IC13).

SWR protection is controlled by the reflection wave voltage. The reﬂ ection wave voltage is divided by the re- sistance and input into IC801(1/2). If it exceeds the desig- nated voltage, IC801(1/2)'s output controls the ALC voltage and lowers the power.

The PWR (power) meter is ampliﬁ ed from the progres- sive wave voltage, the SWR meter is amplified from the reflection wave voltage, and the ALC meter is amplified from the ALC voltage each by the relevant operation ampli- ﬁ er and then input into the A/D converter and displayed on each meter.

Q952 3SK264-5

ALC

VSF

POC

AMC

VSR

PRO

VSWR

PROTECT

IC801 BA2904 (1/2)

PROTECT

IC801 BA2904 (2/2)

Fig. 13 Transmit power control

DAC (IC75, IC78) and ADC (IC83) Signal Path

Outline

DAC (IC75) communicates signals with ACC2 and the Optional unit (VGS-1). DAC (IC78) communicates signals with USB. ADC (IC83) communicates signals with ACC2/ USB and the Optional unit (VGS-1). The signal path of DAC (IC75, IC78) and ADC (IC83) vary depending on each sta- tus of transmit/receive.

POWER

CONTROL

ALC

IC802 BA2904 (1/2) Q803 2SC4617(R) IC802 BA2904 (2/2)

EXT ALC

Functions relating to transmission

1) Modulation input path

Each output signal from the analog switch (IC80) passes through the active ﬁ lter (IC81) and then enters ADC (IC83) and is sent to DSP (IC301).

The signal sent from the USB (UAO) is output from pin 6



to pin 5 of the analog switch. The signal sent from the ACC2 (ANI) is output from pin 2



to pin 1 of the analog switch. The message output signal (VAO) from the Optional unit



(VGS-1) passes, without going through the analog switch, through the active ﬁ lter (IC82), and then input into ADC.

TS-590SG

CIRCUIT DESCRIPTION

2) Modulation output path

The AF signal processed in DSP (IC301) is output as analog in DAC (IC75, IC78) and then ampliﬁ ed by the active ﬁ lter (IC73, IC76).

The signal that passed through the active ﬁ lter (IC73) is



sent to ACC2 output signal (ANO). The signal that passed through the active ﬁ lter (IC76) is



sent to USB output signal (UAI).

3) Recoding a message

Signals input from the microphone are processed in ADC (IC66), passed through DSP, and then enter DAC (IC75).

The signals output from DAC (IC75) pin 11 are sent to the Optional unit (VGS-1) and recorded.

Constant received audio recording function

1) Recording

A part of received audio signal is processed in ADC (IC66), goes through DSP (IC301), and then enters DAC (IC75). The signals output from DAC (IC75) pin 11 are sent to the Optional unit (VGS-1) and recorded. The recording level is automatically compensated to become constant and you cannot randomly change the level.

2) Playback

The output signal (VAO) from the Optional unit (VGS-1) is input into ADC (IC83), goes through DSP (IC301), and out- put as AF from DAC (IC72). Playback volume is controlled by DSP.

Other functions

1) Playing a message (monitor)

The output signal (VAO) from the Optional unit (VGS-1) is input into ADC (IC83), goes through DSP (IC301), and output as AF from DAC (IC72). Playback audio is controlled by DSP.

2) Playing a pre-recorded voice message

The above-mentioned signal path is also used for play- ing a pre-recorded voice message.

Digital Control Circuit

Outline

The digital control circuit consists of the Control unit’s (XC1-021 A/3) main MCU (IC306), EEPROM (IC309), reset IC (IC307), and DSP (IC301). (Refer to Fig. 15)

Main MCU and its periphery

The main MCU (IC306) operates at the power supply voltage of 3.3V, and the clock frequency of 22.1184MHz which is 11.0592MHz doubled in the main MCU. Around the main MCU, EEPROM for backup, power supply voltage monitoring circuit which includes a reset circuit, 3-state out- put buffer (IC311) for DSP control are connected. When the power supply is OFF, the mode is switched to stop mode in order to reduce the standby current.

Around the DSP

The DSP (IC301) operates at the power supply voltage of 3.3V and 1.25V and clock frequency of 221.184MHz which is 24.576MHz multiplied by 9 in the DSP. Around DSP, ﬂ ash memory (IC302) for storing programs, and DAC (IC66, IC83) and DAC (IC72, IC75, IC78) for controlling sig- nals are connected.

IC66

ADC (MIC, RIF/DET)

IC72

DAC (AF, TIF/MOD)

IC75

DAC (ANO, VGS-AI)

IC78

DAC (USB-AO, AGCV)

IC83

ADC (VGS-AO, ANI/USB-AI)

IC301

DSP

X301 X’tal

(24.576MHz)

IC302 Flash

memory

IC304

IC305

NAND

IC317

(512k

16bit)

IC311

Buffer

Fig. 14 Digital control circuit

IC306

Main MCU

X302 X’tal

(11.0592MHz)

IC307

Reset circuit

Reduced voltage detection

Over voltage detection

Panel MCU

IC309

EEPROM

PC (RS-232C)

(USB)

External AT

CIRCUIT DESCRIPTION

Display Circuit

The Display unit (XC1-022) consists of the panel MCU (IC103) and the peripheral circuits, LCD display, and LED including LCD backlight. Communication with the main MCU (XC1-021 IC306) is carried out in PTXD, PRXD, PCTS, PRTS. (Transmission speed: 115200bps)

Circuits around the panel MCU

The 33C power supply (3.3V) sent from the transceiver is used as the power supply for the digital portion. The panel MCU clock is 11.0592MHz (X101). The reset signal is con- trolled from the main MCU. Also, the panel MCU accepts the key matrix, various encoders, and volume.

TS-590SG

LCD driver

The LCD driver used is LC75897PW (IC101). In accor- dance with the IC’s speciﬁ cation, the 5V power supply for the LCD needs to be input after VDD (3.3V), a power supply switch circuit (Q102) for turning 5V ON after 3.3V occurs. In order to reliably control the power ON sequence, such control is executed by the panel MCU. (Frame frequency:

97.66Hz, duty: 1/3, bias: 1/3)

LED

LCD backlight uses 54 LEDs for 1 color, and 10 grada- tions of color between amber and green can be chosen from the menu. There are 7 steps of the back light lumi- nance: 6 steps with the dimmer and OFF. Because the drive transistors (Q101, Q103, Q104, Q105) cannot be directly controlled with the panel MCU because of the quantity of LEDs, logic ICs (IC102, IC104) are used as a buffer. LCD backlight’s default value is amber. LED at times of transmit/ receive is controlled by the panel MCU.

LCD

COM1~COM3 S1~S119

IC101

LCD driver

Key matrix

8A (8V)

Q101/Q103

Drive circuit

for Amber

Q102

Power supply

control

DATA/CLK/CE

KIN0~KIN7

KO0~KO7

11.0592MHz

5C_L (5V)

LCD backlight

(Amber)

IC102

Buffer

IC103

Panel MCU

LCD backlight

(Green)

Q104/Q105

Drive circuit

for Green

DIMM LCDB_Y LCDB_YG

IC105

Voltage converter

IC106

Voltage converter

MU/MD/PCTS/PRXD/PRTS/

PTXD/BKC/PRESET/PWS

IC104

Buffer

Main Encoder

RIT Encoder

Multi Encoder

Lo/Hi Encoder

Notch VR/SQL VR

AF VR/RF VR

CN107

to Control unit XC1-021 (A/3)

Fig. 15 Display circuit

TS-590SG

COMPONENTS DESCRIPTION

Final unit (X45-398X-XX)

Ref. No. Use / Function

IC1 Shift register BPF switching

IC2,3 Inverter gate PHD detection

IC4

IC5 Comparator AMD detection

IC6 D-type ﬂ ip-ﬂ op PHD detection

IC7 Shift register

IC8~10 Shift register AT control

Q3,4 Final ampliﬁ er Push-pull ampliﬁ er

Q5 Switching Power supply control of 14S

Q101 Switching Over voltage detection

Q251,252 Ampliﬁ er VSF signal ampliﬁ er

Q253,254 Switching Relay (K46) control

Q501~Q508, Q522

Q509,510 Switching FAN control

Q511 Switching Power supply control of 14S

Q513 Switching AT control

Q514,515 Switching Relay (K45) control

Q516 Switching FAN control

Q517,518 Switching AT control

Q519 Switching Relay (K44) control

Q520 Switching FAN control

Q521 ,Q523, Q524

Q525,526 Switching

Q527~544

D1,2 Attenuator RF power control

D51,52 Protection Surge protection

D101 Protection Reverse connection protection

D102~110

D111 Protection Over voltage protection

D251~253

D254 Protection Surge protection

D255 Detection RF power detection

D256,257 Protection Surge protection

D258 Switch

D301~325

D501~503

Drain current detection

Pre-drive ampliﬁ er

Drive ampliﬁ er

Switching

Switching AT control

Reverse voltage prevention

Detection RF power detection

Protection Surge protection

Operation / Condition / Compatibility

Current detection

Q1: AT switching Q2: ANT switching Q4: BPF switching Q5: FAN control Q6: FAN control Q8: AT control

Single ampliﬁ er

Filter switching depending on band

AT relay operation stops when power is ON

Surge protection

Control unit (XC1-021X-XX)

Ref. No. Use / Function

IC1

IC2

IC3 8V AVR

IC4 3.3V AVR

IC5 5V AVR

IC6 1.25V AVR

IC61 OP ampliﬁ er Isolation ampliﬁ er for MIC signal

IC62,63 OP ampliﬁ er Active ﬁ lter for MIC signal

IC64,65 OP ampliﬁ er Active ﬁ lter for RIF signal

IC66 A/D converter

IC67 AF ampliﬁ er

IC68 Analog switch

IC69 OP ampliﬁ er Active ﬁ lter for AF signal

IC70 OP ampliﬁ er

IC71 OP ampliﬁ er

IC72 D/A converter

IC73 OP ampliﬁ er Active ﬁ lter for ANO signal

IC74 OP ampliﬁ er Active ﬁ lter for VAI signal

IC75 D/A converter

IC76 OP ampliﬁ er Active ﬁ lter for UAI signal

IC77 OP ampliﬁ er

IC78 D/A converter

IC79 OP ampliﬁ er Active ﬁ lter for AN1 signal

IC80 Analog switch ANI and UAO signal switch

IC81 OP ampliﬁ er

IC82 OP ampliﬁ er Active ﬁ lter for VAO signal

IC83 A/D converter

IC301 DSP Digital signal

IC302 Flash memory Program for DSP

IC304 OR gate IC FCS control

IC305 NAND gate IC Inverter for A (23) signal

IC306 MCU Main microcomputer

IC307 Reset IC MCU reset signal

3.3V switching regulator

8V switching regulator

Operation / Condition / Compatibility

3.3V switching regulator (Digital circuit)

8V switching regulator (Analog circuit for TX-RX, Display and Control unit)

8V voltage regulator (Local unit XC1-021 B/3)

3.3V voltage regulator (Main MCU and RS-232C circuit)

5V voltage regulator (Analog circuit)

1.25V voltage regulator power supply (DSP)

A/D converter for MIC and RIF signal

FMOD and TIF signal ON/OFF switch

Active ﬁ lter for FMOD and TIF signal

Active ﬁ lter for FMOD, TIF and AF signal

D/A converter for FMOD, TIF and AF signal

D/A converter for ANO and VAI signal

Buffer for AGCV signal and refer- ence voltage source

D/A converter for UAI and AGCV signal

Active ﬁ lter for ANI and UAO signal

A/D converter for ANI, UAO and VAO signal

COMPONENTS DESCRIPTION

TS-590SG

Ref. No. Use / Function

IC308 OR gate IC Buffer for VBINT signal

IC309 EEPROM

IC310

IC311

IC312 Buffer

IC313 Buffer

IC314 Buffer Buffer for CLK signal

IC315 Reset IC BKC detection

IC316 OR gate IC Delay time control of FOE

IC317 OR gate IC Logic IC for IC311 control

IC501,502

IC504 5V AVR 5V voltage regulator

IC505 3.3V AVR 3.3V voltage regulator

IC601 DDS LO3 generator

IC651 Shift register

IC801 PLL LO1 reference generator

IC802 1.8V AVR 1.8V voltage regulator

IC803 DDS LO1 generator

IC804 Ampliﬁ er Wide band ampliﬁ er

IC901 Level converter RS-232C level converter

IC902 OP ampliﬁ er USB audio ampliﬁ er

IC903 CODEC USB audio IC

IC904 AND gate USB audio IC control

IC905 USB hub

IC906

Q1~4 Switching

Q61 Ripple ﬁ lter For audio ampliﬁ er VCC

Q62 Switching Detection signal mute switch

Q63,64 Switching

Q65 Buffer Buffer ampliﬁ er for ANO output

Q66,67 Switching

Q501

Q502 Buffer 15.6MHz buffer

Q503 Doubler

Analog multiplex- er

Buffer with 3-state output

Buffer Voltage conversion: 3.3V → 5V

USB-UART bridge

Crystal oscillation circuit

Operation / Condition / Compatibility

A/D port selection of MCU

Data control of DSP

Voltage conversion: 5V → 3.3V (for TTI and TSI signal)

Voltage conversion: 3.3V → 5V (for TTO and TSO signal)

Q1: I/O update Q2: FM_TX Q3: IFB Q4: IFA Q5: BPF1 Q6: BPF2 Q7: BPF3 Q8: BPF4

Power supply control of 3.3V (ON when power is ON)

FMOD and TIF signal ON/OFF analog switch control (IC68)

ANI and UAO signal ON/OFF analog switch control (IC80)

Crystal oscillation circuit (15.6MHz)

Frequency doubler (15.6MHz x 2 = 31.2MHz)

Ref. No. Use / Function

Q504,505 Doubler

Q506 Ampliﬁ er LO2 output ampliﬁ er

Q601 Buffer DDS reference buffer

Q602 Buffer LO3 output buffer

Q651,652 Switching BPF4 selection switch

Q653,654 Switching IFB selection switch

Q655,656 Switching BPF1 selection switch

Q657,658 Switching IFA selection switch

Q659,660 Switching BPF2 selection switch

Q661,662 Switching BPF3 selection switch

Q663 Ampliﬁ er LO1 output ampliﬁ er

Q664 Switching

Q801 Buffer PLL reference buffer

Q802 Switching FM modulation switch

Q803 Switching PLL LPF cutoff control switch

Q804 Ampliﬁ er PLL F-in ampliﬁ er

Q805 Filter Ripple ﬁ lter

Q806 VCO

Q807 Ampliﬁ er VCO ampliﬁ er

Q808 Ampliﬁ er DDS reference ampliﬁ er

Q901,905 Switching

Q902,906 Switching

Q903,907 Switching USB audio IC active signal switch

Q904,908 Switching

D1 Switching

D2 Switching

D3~6 Voltage shift Temperature compensation

D7~9

D61 Poly-switch Current limit

D62

D101 Mute For AF mute

D301 6.2V zener diode Voltage shift

D302

D304 Switching

D501 Switching LO2 output switch

D651 Switching IFA selection switch

D652 Doubler DDS output frequency doubler

D653 Switching LO1 BPF3 selection switch

Reverse current prevention

Operation / Condition / Compatibility

Frequency doubler (31.2MHz x 2 = 62.4MHz)

LO1 output LPF cutoff control switch

RS-232C IC power supply control switch

USB IC power supply control switch

USB-UART bridge IC active Sig- nal Switch

Catch diode for 3.3V switching regulator

Catch diode for 8V switching regulator

For MIC data

For MIC supply (8V)

For SS signal

TS-590SG

COMPONENTS DESCRIPTION

Ref. No. Use / Function

D654 Switching LO1 BPF2 selection switch

D655 Switching LO1 BPF4 selection switch

D656 Switching

D657 Switching LO1 BPF1/ BPF2 selection switch

D659 Switching IFB selection switch

D660 Switching LO1 BPF4 selection switch

D661 Switching LO1 BPF2 selection switch

D662 Switching LO1 BPF1/ BPF2 selection switch

D663 Switching LO1 BPF3 selection switch

D664,665 Switching LPF cutoff switching

D666 Switching LO1 BPF4 selection switch

D667 Switching IFA/ IFB selection switch

D668 Switching LO1 BPF1 selection switch

D669 Switching LO1 BPF3 selection switch

D670 Switching LO1 BPF1 selection switch

D671 Switching

D672 Switching BPF1/ BPF2 selection switch

D673,675,677

D678 Switching LO1 BPF2 selection switch

D679 Switching LO1 BPF3 selection switch

D680,681 Switching LO1 BPF4 selection switch

D682 Switching LO1 BPF1 selection switch

D683 Switching LO1 BPF3 selection switch

D801

D802,803

D901 Protection Surge protection

D902 Protection Voltage protection

D903 Protection Reverse current protection

Switching BPF cutoff control

Variable capaci- tance diode

Operation / Condition / Compatibility

BPF2/ BPF3 selection signal control

BPF2/ BPF3/ BPF4 selection switch

FM modulation control

VCO control

Display unit (XC1-0220-00)

Ref. No. Use / Function

IC101 LCD driver

IC102 Buffer LCD backlight dimmer control

IC103 MCU Panel microcomputer

IC104 Buffer LCD backlight dimmer control

IC105,106

Q101 Driver LCD backlight dimmer control

Q102,106 Switching 5V power supply switch

Q103~105

Q106 Driver LED (D214) control

Q107 Driver LED (D961) control

Q109 Driver LED (D215) control

D101~115

D116~122

Buffer Voltage conversion: 5V → 3.3V

Driver LCD backlight dimmer control

LED (Green) LCD backlight

Reverse current prevention

Operation / Condition / Compatibility

Key matrix

Ref. No. Use / Function

D123~160

D161~213

D214 LED (Green) Lights during reception

D215 LED (Red) Lights during transmission

D216 LED (Green) LCD backlight

D217 LED (Amber) LCD backlight

D218

D961 LED (Orange) ON when Mulch encoder is active

LED (Green) LCD backlight

LED (Amber) LCD backlight

Reverse current prevention

Operation / Condition / Compatibility

Reduced voltage detection inter- rupt

TX-RX unit (XC1-024X-XX)

Ref. No. Use / Function

IC11 Shift register

IC12 Shift register

IC13 D/A convertor

Operation / Condition / Compatibility

Q1: FIL[1] “H” when 15kHz IF ﬁ lter is selected Q2: FIL[2] “H” when 6kHz IF ﬁ lter is selected Q3: FIL[3] “H” when 2.7kHz IF ﬁ lter is selected Q4: FIL[4] “H” when 500Hz IF ﬁ lter is selected Q5: RXFM “H” when RX FM mode is selected Q6: TXFM “H” when TX FM mode is selected Q7: HFRGC Not Used Q8: 50RGC “H” when receiving

21.5~30, 30~60MHz and PRE ”H” are selected

Q1: DRVO “L” when Drive output is selected Q2: 1STIF “H” when RX 1st IF of

73.095MHz is selected Q3: 455FIL “L” when 455kHz FM narrow ﬁ lter is selected Q4: NBSW “H” when NB1 function is selected Q5: AMC “H” when AM TX is selected Q6: RLSW “H” when linear ampliﬁ er usage is selected in HF or 50MHz band Q7: LINEAR “H” when linear ampliﬁ er usage is selected in either band Q8: ANTOUT "H" when RX Antenna output is selected

Ao1: POC2 TX power control 2 voltage Ao2: IFGC RX IF gain control voltage Ao3: ALC_REF ALC reference voltage Ao4: TGC TX band gain control voltage Ao5: POC TX power control voltage Ao6: PGC TX power gain control voltage

COMPONENTS DESCRIPTION

TS-590SG

Ref. No. Use / Function

IC13 D/A convertor

IC14 Shift register

IC15 Shift register

IC521 OP ampliﬁ er

IC591 RX FM IC RX FM Detection

IC592 OP ampliﬁ er

IC601 OP ampliﬁ er RX 3rd IF ampliﬁ er 2 (24kHz)

IC631 Multiplexer

IC701 TX Mixer

IC761 TX Mixer

IC801 OP ampliﬁ er ALC protection

IC802 OP ampliﬁ er ALC protection

IC803 OP ampliﬁ er ALC protection

IC861 OP ampliﬁ er Ampliﬁ er for meter

Q12 Buffer Buffer ampliﬁ er for ANO output

Q13 Switching

Operation / Condition / Compatibility

Ao7: PRO SWR protection control voltage Ao8: NBL NB level control voltage

Q1: BPF[5] “H” when BPF of 5M band is selected Q2: BPF[4] “H” when BPF of

3.5M band is selected Q3: BPF[3] “H” when BPF of

1.8M band is selected Q4: BPF[2] “H” when BPF of BC band (522k~1.705MHz) is selected Q5: BPF[1] “H” when BPF of BC band (30~522kHz) is selected Q6: ATT “L” when attenuator is ON Q7: RXANT “H” when receiving under 30MHz and external RX antenna is ON Q8: PRE “H” when receiving preampliﬁ er is ON

Q1: BPF[13] “H” when BPF of 50M band is selected Q2: BPF[12] “H” when BPF of 30~60M band is selected Q3: BPF[11] “H” when BPF of 28M band is selected Q4: BPF[10] “H” when BPF of 21M band is selected Q5: BPF[9] “H” when BPF of 14M band is selected Q6: BPF[8] “H” when BPF of 11M band is selected Q7: BPF[7] “H” when BPF of 10M band is selected Q8: BPF[6] “H” when BPF of 7M band is selected

A/2: AGC Voltage and AGC refer- ence voltage ampliﬁ er B/2: Not used

A/2: RX FM Noise squelch volt- age ampliﬁ er B/2: RX FM AF signal ampliﬁ er

Receiver output, FM (AF) and SSB/ AM/ CW/ FSK (IF) changeover

Transmission mixer (24kHz → 10.695MHz)

Transmission mixer (73.095MHz → HF)

External squelch output (open collector)

Ref. No. Use / Function

Q14 Buffer

Q15 Switching

Q16 Switching

Q17 Switching

Q18,19 Switching

Q101 Switching

Q102 Switching

Q103 Mute

Q131~143

Q200

Q236 Ampliﬁ er

Q239 Switching

Q263~266

Q267 Switching

Q268 Switching

Q269 Switching

Q270 Switching

Q271 Switching

Q272 Switching

Q273 Switching

Q274 Switching

Q281,282 Ampliﬁ er

Q301 Switching

Q302,303 Switching

Q305 Switching

Switching RF BPF selection

Switching

RX mixer

Operation / Condition / Compatibility

Buffer ampliﬁ er for PKS input signal

ON when relay for HF band linear is used

ON when relay for HF band linear is transmission

ON when relay for HF band linear is used

Dedicated external RX antenna changeover relay (K101) control (ON when external RX antenna is selected)

ATT changeover relay (K102) control (OFF when ATT is ON)

Mutes reception path during transmission (ON during transmission)

RX Antenna output changeover relay (K103) control (OFF when ANTOUT is ON)

Preampliﬁ er (HF~21.5MHz: 12dB,

21.5~60MHz: 20dB)

Preampliﬁ er gain control (ON receiving at 21.5~60MHz)

Receiving 1st mixer (HF → 11.374MHz)

Power supply control of preampli- ﬁ er (ON when preampliﬁ er is ON)

Power supply control of preampli- ﬁ er (ON when preampliﬁ er is OFF)

Power supply control of preampli- ﬁ er (ON when preampliﬁ er is ON)

Power supply control of preampli- ﬁ er (ON when preampliﬁ er is OFF)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

73.095MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

11.374MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

73.095MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

11.374MHz is selected)

RX LO1 ampliﬁ er (RX 1st IF of

11.374MHz is selected)

ON when RX 1st IF of 11.374MHz (NB1 function ON) is selected

ON when RX 1st IF of 11.374MHz (NB1 function OFF) is selected

ON when RX 1st IF of 11.374MHz (NB1 function ON) is selected

TS-590SG

COMPONENTS DESCRIPTION

Ref. No. Use / Function

Q321~324

Q351,352 Ampliﬁ er

Q391 Ampliﬁ er

Q421 Switching

Q431 Ampliﬁ er

Q451 Ampliﬁ er

Q453 Switching

Q454 Switching

Q455,456 Switching ON when BLNK signal is “H”

Q471~477

Q521,522 Ampliﬁ er

Q541 Ampliﬁ er

Q571 Ampliﬁ er

Q631 Switching

Q641 Buffer Noise blanker input buffer

Q651 Ampliﬁ er

Q642,643 Switching

Q652,653 Ampliﬁ er

Q654 Switching

Q663,664 Ampliﬁ er

Q665 Switching

Q666 Ampliﬁ er

Q667 Ampliﬁ er

Q668 Switching

RX mixer

Switching IF ﬁ lter selection

Operation / Condition / Compatibility

Receiving 1st mixer (HF → 73.095MHz)

RX LO1 ampliﬁ er (RX 1st IF of

73.095MHz is selected)

RX 1st IF ampliﬁ er (RX 1st IF of

73.095MHz is selected)

Gain correction between 1st IF (ON when TX or RX 1st IF of

73.095MHz are selected)

LO2 ampliﬁ er (ON when TX or RX 1st IF of 73.095MHz are selected)

RX 2nd IF ampliﬁ er 1 (10.695MHz/ 11.374MHz)

Gain correction between bands (ON when receiving 21.5~30MHz and PRE ”H” are selected)

Gain correction between bands (ON when receiving 30~60MHz and PRE “H” are selected)

RX 2nd IF ampliﬁ er 3 (10.695MHz/ 11.374MHz)

RX 2nd IF ampliﬁ er 2 (10.695MHz/ 11.374MHz)

LO3 ampliﬁ er (ON when RX AM/ SSB/ CW/ FSK mode is selected)

Receiver output, FM (AF) and SSB/ AM/ CW (IF) changeover multiplexer (IC631) control

Noise blanker IF ampliﬁ er 1 (10.695M/ 11.374MHz)

Power supply control of NB UNIT (ON when NB1 function is selected)

Noise blanker IF ampliﬁ er 2 (10.695MHz/ 11.374MHz) Gain is controlled according to the NB voltage

ON when Noise Blanker IF of

10.695MHz is selected

Noise blanker IF ampliﬁ er 3 (10.695M/ 11.374MHz) Gain is controlled according to the NB voltage

ON when Noise blanker IF of

10.695MHz is selected

Noise blanker IF ampliﬁ er 4 (10.695M/ 11.374MHz) Gain is controlled according to the NB voltage

Noise blanker AGC control ampli- ﬁ e r

ON when noise blanker IF of

10.695MHz is selected

Ref. No. Use / Function

Q669 Switching Audio mute signal generation

Q670 Buffer Noise Blanker IF buffer

Q671 Switching Audio mute signal generation

Q702 Buffer TX IF buffer (10.695MHz)

Q721 Ampliﬁ er

Q741 Switching

Q742 Ampliﬁ er TX IF ampliﬁ er (73.095MHz)

Q781 Switching ON when drive output is selected

Q782 Switching

Q783 Ampliﬁ er TX drive output ampliﬁ er

Q784 Switching

Q785 Switching

Q802 Switching

Q803,804 Ampliﬁ er ALC ampliﬁ er

Q861,862 Switching

Q903~905

Q906,907 Switching

Q908 Switching

Q909 Switching

Q910 Switching

Q911 Switching

Q914,915 Switching

Q916 Switching

Q917,918 Switching

Q919 Switching

Switching

Operation / Condition / Compatibility

TX IF ampliﬁ er (10.695MHz) Gain is controlled according to the ALC voltage

Transmission IF mute control (Mute when ON)

ON when ANT connector output is selected

Power supply control of TXB to Fi- nal unit (X45 A/2) (ON when ANT connector output is selected)

ATT changeover relay (K102) control (ON when DRV or ANTOUT is ON)

On in AM mode, makes it an average value type ALC

Cancels the time constant for VSF and VSR voltage lines during antenna tuning

Power supply control of TXB (ON during transmission)

Power supply control of RXB (ON during reception)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

11.374MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

73.095MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

11.374MHz is selected)

Power supply control of RX 1st IF circuit (ON when RX 1st IF of

73.095MHz is selected)

Power supply control of FM circuit (ON when RX FM mode is selected)

Power supply control of 3rd IF cir- cuit (ON when RX AM/ SSB/ CW/ FSK mode is selected)

Power supply control of FM circuit (ON when TX FM mode is selected)

Power supply control of 3rd IF circuit (ON when RX SSB, AM and CW mode are selected)

COMPONENTS DESCRIPTION

TS-590SG

Ref. No. Use / Function

Q921,922 Switching

Q924 Switching

Q925 Switching

Q952 Ampliﬁ er

D11,12 Clipper External modulation input

D13

D14 Surge protection ACC2 connector (5-pin SQC)

D15 Surge protection ACC2 connector (9-pin PKS)

D17

D18 Surge absorption Relay (K11)

D19

D20~23

D24 Surge protection ACC2 connector (2-pin RTTY)

D25

D101 Surge absorption External RX antenna terminal

D102 Surge absorption Relay (K101)

D103 Surge absorption Relay (K102)

D104~107

D108 Switching

D109,110 Switching

D111 Surge protection Receiver RF signal input

D131 Switching

D132 Switching

D133 Switching

D134 Switching

D135 Switching

D136 Switching

D137 Switching

D138 Switching

D139 Switching

Reverse current prevention

Surge absorption Internal circuit protection

Operation / Condition / Compatibility

Power supply control of RX circuit (ON during reception)

Power supply control of FM circuit (ON when TX FM mode is selected)

RX power supply control (ON during transmission)

TX IF ampliﬁ er (73.095MHz) Gain is controlled according to the ALC voltage

External standby

Linear ampliﬁ er control signal

Paddle/key control line

Linear ampliﬁ er control signal

RX/TX changeover, ON during reception

ON when receiving over

1.705MHz is selected

ON when BPF of 522kHz~

1.705MHz is selected

ON when BPF of 13.9~14.5MHz is selected

ON when BPF of 49~54MHz is selected (TX only)

ON when BPF of 6.9~7.5MHz is selected

ON when BPF of 30~522kHz is selected

ON when BPF of 1.705~2.5MHz is selected

ON when BPF of 2.5~4.1MHz is selected

ON when BPF of 4.1~6.9MHz is selected

ON when BPF of 7.5~10.5MHz is selected

Ref. No. Use / Function

D140 Switching

D141 Switching

D142 Switching

D143 Switching

D144 Switching

D145 Switching

D146 Switching

D147 Switching

D148 Switching

D149 Switching

D150 Switching

D151 Switching

D152 Switching

D153 Switching

D154 Switching

D155 Switching

D156 Switching

D200 Surge absorption Relay (K103)

D231 Switching

D232 Switching

D233 Switching

D234 Switching

D235

D261,281 Switching

D301 Switching

D302 Switching

D321 Switching

D323 Switching

Reverse current prevention

Operation / Condition / Compatibility

ON when BPF of 10.5~13.9MHz is selected

ON when BPF of 14.5~21.5MHz is selected

ON when BPF of 21.5~30MHz is selected

ON when BPF of 30~60MHz are selected

ON when BPF of 522kHz~

1.705MHz is selected

ON when BPF of 30~522kHz is selected

ON when BPF of 1.705~2.5MHz is selected

ON when BPF of 2.5~4.1MHz is selected

ON when BPF of 4.1~6.9MHz is selected

ON when BPF of 6.9~7.5MHz is selected

ON when BPF of 7.5~10.5MHz is selected

ON when BPF of 10.5~13.9MHz is selected

ON when BPF of 14.5~21.5MHz is selected

ON when BPF of 21.5~30MHz is selected

ON when BPF of 30~60MHz are selected

ON when BPF of 13.9~14.5MHz is selected

ON when BPF of 49~54MHz is selected (TX only)

ON when receiving preampliﬁ er is OFF

ON when receiving preampliﬁ er is ON

ON when receiving preampliﬁ er is OFF

ON when receiving preampliﬁ er is ON

1/2: Receiving ON at 21.5~30MHz 2/2: Receiving ON at 30~60MHz

ON when RX 1st IF of 11.374MHz is selected

ON when RX 1st IF of 11.374MHz (NB1 function OFF) is selected

ON when RX 1st IF of 11.374MHz (NB1 function ON) is selected

ON when RX 1st IF of 73.095MHz is selected

RX/TX changeover, ON during reception

TS-590SG

COMPONENTS DESCRIPTION

Ref. No. Use / Function

D324 Switching

D351 Switching

D371 Switching

D372 Switching

D420 Switching

D421 Switching

D422,423 RX/TX Mixer

D431 Switching

D441 Switching

D442 Switching

D443 Switching

D461~464

D470

D471 Switching ON when 6kHz IF ﬁ lter is selected

D472 Switching

D473 Switching

D474,475 Switching

D476 Switching

D477 Switching

D478 Switching

D479 Switching

D480,481 Switching

D482 Switching ON when 6kHz IF ﬁ lter is selected

D483 Switching

D525 Attenuator IF gain adjustment

D526 Switching

D551,552 RX Mixer

Noise Blanking ON when BLNK signal is “H”

Switching

Operation / Condition / Compatibility

RX/TX changeover, ON during transmission

ON when RX 1st IF of 73.095MHz is selected

RX/TX changeover, ON during transmission

RX/TX changeover, ON during reception

RX/TX changeover, ON during transmission

Receiving 2nd/ Transmis- sion mixer (RX: 73.095MHz →

10.695MHz, TX: 10.695MHz →

73.095MHz)

1/2: RX/TX changeover, ON dur- ing transmission 2/2: RX/TX changeover, ON dur- ing reception

ON when RX 1st IF of 11.374MHz (NB1 function ON) is selected

ON when RX 1st IF of 11.374MHz (NB1 function OFF) is selected

ON when RX 1st IF of 73.095MHz is selected

ON when 15kHz IF ﬁ lter is selected

ON when 10.695MHz 2.7kHz IF ﬁ lter is selected

ON when 500Hz IF ﬁ lter is selected

RX/TX changeover, ON during reception

ON when 15kHz IF ﬁ lter is selected

ON when 10.695MHz 2.7kHz IF ﬁ lter is selected

ON when 500Hz IF ﬁ lter is se- lected

ON when 11.374MHz 2.7kHz IF ﬁ lter is selected

RX/TX changeover, ON during transmission

ON when 11.374MHz 2.7kHz IF ﬁ lter is selected

1/2: ON when RX FM mode is selected 2/2: ON when RX AM/ SSB/ CW/ FSK mode are selected

Receiving 3rd mixer (10.695MHz/

11.374MHz → 24kHz)

Ref. No. Use / Function

D571 Switching

D586,587 Clipper FM detection IC input

D662 Detection

D663,664

D701 Switching

D702

D721,722 Attenuator TGC control attenuator

D723 Switching

D724

D741 Attenuator PGC control attenuator

D761,762 Switching

D781 Switching ON when Drive output is selected

D782 Switching

D783 Switching

D784 Surge absorption Relay (K800)

D785 Switching

D799,800 Surge absorption Drive output terminal

D801 Power control

D802

D806

D807

D808 Power control Reduce power at high voltage

D809 Surge protection ALC meter signal line

D841

D861,862

Reverse current prevention

Attenuator TGC control attenuator

Reverse current prevention

Current protec- tion

Reverse current prevention

Operation / Condition / Compatibility

1/2: ON when RX FM mode is selected 2/2: ON when RX AM/ SSB/ CW/ FSK mode is selected

Noise blanker switching pulse detection

Main IBK and NB mute signal matching, main side mute when ON

1/2: ON when TX AM/ SSB/ CW/ FSK mode is selected 2/2: No connection

ON during TX FM mode

RX/TX changeover, ON during transmission

ON when transmitting over

1.705MHz

ON when transmitting from 30~522kHz

ON when ANT connector is selected

External ALC voltage

Reduce power at over current

CKY signal line

Meter circuit

SEMICONDUCTOR DATA

TS-590SG

Main MCU: F3651RDFCKFSA (Control unit IC306)

Pin No.

34,35 NC O Not used

Name I/O Function

1 VREF I A/D standard voltage input

2 AVCC I Analog power supply input

3 DSIN I DSP data input

4 DSOUT O DSP data output

5 DCLK O DSP clock

6 DSCS O DSP chip select

7 TDET I

8 VMIC I

9 VANI I

10 DHLT I DSP check signal input H: Ready

11 DRST O DSP reset output L: Reset

12 UL I Unlock detection L: Unlock

13 BYTE I

14 CNVSS I For production

15 DRET O Communication re-start request to DSP

16 PHDET I

17 RESET I For reset L: Reset

18 XOUT O System clock output (11.0592MHz)

19 VSS - GND

20 XIN I System clock input (11.0592MHz)

21 VCC1 - Power supply input

22 NMI I Not used (VCC connection)

23 DREQ I Communication request from DSP

24 PWS I Power switch input L: Push

25 UVBINT I

26 UCTS I RTS signal input from USB-serial bridge

27 URXD I Serial data input from USB-serial bridge

28 URTS O RTS signal output to USB-serial bridge

29 UTXD O Serial data output to USB-serial bridge

30 NC O Not used

31 DCFV O

32 ABK2 O

33 ABK1 O

36 ETXD O For production

37 VCC1 - Power supply input

38 ERXD I For production

CTCSS detect signal input from DSP H: Detect

VOX transmit (MIC) signal input from DSP H: Active

VOX transmit (ANI) signal input from DSP H: Active

Single chip mode selection (Vss connec- tion)

Phone jack connection detection L: Detect

USB connection interrupt input H: Connect

Oscillator frequency output for DC/DC converter

Audio blanking signal output for ACC2 and USB H: AF blanking

Audio blanking signal output H: AF blanking

Pin No.

73,74 NC O Not used

Name I/O Function

39 VSS - GND

40 SCLK O For production

41 BUSY O For production

42 PTXD O Serial data output for Panel MCU

43 PRXD I Serial data input from Panel MCU

44 PRTS O RTS signal output for Panel MCU

45 PCTS I RTS signal input from Panel MCU

46 PRST O Reset signal output for Panel MCU

47 TYPX I Type detection

48 TYPY I Type detection

49 TYP3 I Type detection

50 TYP2 I Type detection

51 TYP1 I Type detection

52 EPM O For production

53 TYP0 I Type detection

54 EEN O EEPROM enable

55 EDA I EEPROM data input

56 ECK O EEPROM clock

57 ESI O EEPROM data output

58 VEN O VGS-1 enable

59 VRST O VGS-1 reset

60 VPLY I VGS-1 playback signal input

61 ECE O For production

62 VBSY I VGS-1 busy signal input

63 SS I PTT (SS) signal input L: Transmit

64 FPRG I Firmware programming mode detection

65 AMU O Audio mute H: Mute

66 PHD I Phase comparison detection for AT

67 AMD I Amplitude comparison detection for AT

68 PSC O Power switch control H: Power ON

69 TCS O

70 SQC O Squelch signal H: Close, L: Open

71 PHPWS O Power switch control H: Power ON

72 ATPWS O

75 PKP O

76 PKSR I

77 KEY I Key down signal L: Key down

78 KYS I

79 DASH I

80 DOT I Electronic Key dot Signal L: Dot ON

AT tuning instruction H: During AT tuning

Shift and store bus register for AT control signal H: Valid

Crossband repeater operation instruc- tion L: Crossband repeater operation

Packet transmit/ Crossband transmit instruction Normal H: Transmit, Crossband repeater L: Transmit

Key jack connection detection H: Key jack connection

Electronic key dash signal L: Dash ON

TS-590SG

SEMICONDUCTOR DATA

Pin No.

100 CTXD O Serial data output for RS-232C IC

101 CRXD I Serial data input from RS-232C IC

102 CRTS O RTS signal output for RS-232C IC

103 CCTS I RTS signal input from RS-232C IC

104 LDAT O

105 LCLK O

106 LEN O PLL IC enable

107 DEN1 O DDS IC (AD9951YSVZ) enable

108 DEN2 O DDS IC (AD9835BRUZ) enable

109 SEN O

110 IEN1 O

111 IEN2 O

112 IEN3 O

113 FEN2 O

114 DRES O

Name I/O Function

81 TTO O External AT control

82 TSO O External AT control

83 TTI I External AT control

84 TSI I External AT control

85 VCC2 I Power supply input

86 MODSEL O

87 VSS - GND

88 ANISEL O

89 BEEP O

90 BKC I

91 IBK O IF blanking signal output H: Blanking

92 TLN2 O Transmit line select 2 for DSP

93 TLN1 O Transmit line select 1 for DSP

94 TXC O

95 CKY O

96 NC I Not used (External pull up)

97 BOVR I

98 STPC I

99 STS O

Modulation selection L: TIF, H: FM modulation

ACC2 audio/USB audio selection L: ACC2 audio, H: USB audio

Beep pattern instruction H: Beep output

Reduced voltage detection interrup H→L: Interrupt

Transmit circuit power control H: Transmit circuit power is ON

Transmit power output control H: Transmit output

Over voltage detection interrupt H→L: Interrupt

Interrupt for returning from sleep mode (PC control) L→H: Interrupt

RS-232C IC power control H: Power ON

Serial data output for Control unit (LO) (X53 B/3)

Serial clock output for Control unit (LO) (X53 B/3)

8-bit shift and register enable (Control unit (LO) X53 B/3)

8-bit shift and register enable (TX-RX unit X57 A/2)

D/A converter enable (TX-RX unit X57 A/2)

8-bit shift and register enable (Final unit X45 A/2)

DDS IC (AD9951YSVZ) reset output H: Reset

Pin No.

115 FEN1 O

116 CLK O Serial clock output

117 DATA O Serial data output

118 ADC1 O Multiplexer control signal 1

119 ADC2 O Multiplexer control signal 2

120 AXC I Multiplexer X line input

121 AYC I Multiplexer Y line input

122 IDT I Current detection

123 VDT I

124 VSF I Forward wave voltage

125 VSR I Reﬂ ected wave voltage

126 FSQL I Squelch voltage

127 AVSS - Analog GND

128 FSM I S-meter voltage

Name I/O Function

8-bit shift and register enable (Final unit X45 A/2)

Power supply voltage detection (Not used)

Panel MCU: F364AEDFBKFTA (Display unit IC103)

Pin No. Name I/O Function

1,2 NC O Not used

3 LCD_B_U O LCD backlight amber L: Light

4 LCD_B_G O LCD backlight green L: Light

5 CHLED O MULTI/CH encoder LED H: Light

6 BYTE I

7 CNVSS I For production

8,9 NC O Not used

10 RESET I For reset L: Reset

11 XOUT O System clock output (11.0592MHz)

12 VSS - GND

13 XIN I System clock input (11.0592MHz)

14 VCC I Power supply input

15 NC I Not used (External pull up)

16 LOENCA I Low cut encoder pulse A input

17 HIENCA I Hi cut encoder pulse A input

18 MULA I MULTI encoder pulse A input

19 M-ENCB I Main encoder pulse B input

20 M-ENCA I Main encoder pulse A input

21 RIT-ENCB I RIT encoder pulse B input

22 RIT-ENCA I RIT encoder pulse A input

23 NC I Not used (External pull down)

24 DIM_A O

25 NC I Not used (External pull down)

26 DIM_G O PWM output for dimmer control (green)

27,28 NC O Not used

Single chip mode selection (Vss con- nection)

PWM output for dimmer control (amber)

SEMICONDUCTOR DATA

TS-590SG

Pin No.

29 E8TXD O For production

30 E8RXD O For production

31 E8CLK O For production

32 E8BSY O For production

33 TXD0 O

34 RXD0 I

35 RTS O

36 CTS I

37,38 NC O Not used

39 E8EPM I For production

40~43 NC O Not used

44 E8CE I For production

45~49 NC O Not used

50 LOENCB I Low cut encoder pulse B input

51 HIENCB I Hi cut encoder pulse B input

52 CHENCB I MULTI/CH encoder B input

53 LCDDATA O LCD driver data output

54 LCDCLK O LCD driver clock output

55 LCDCS O LCD driver chip select output

56 LCDINH O Segment display off control output

57 LCDPOW O

58,59 NC O Not used

60 VCC I Power supply input

61 NC O Not used

62 VSS - GND

63 NC O Not used

64~70 KO6~KO0 O Key scan output bit 6~0

71 PBKC I Reduced voltage detection interrupt

72~78 NC O Not used

79~86 KI7~KI0 I Key scan input bit 7~0

87,88 NC O Not used

89 MU I MIC up key input (A/D)

90 MD I MIC down key input (A/D)

91 NVOL I NOTCH volume input (A/D)

92 SVOL I SQ volume input (A/D)

93 AFVOL I AF volume input (A/D)

94 AVSS - Analog GND

95 RFVOL I RF volume input (A/D)

96 VREF I A/D standard voltage input

97 AVCC I Analog power supply input

98 NC O Not used

99 TXL O TX LED output H: Light

100 BUSYL O BUSY LED output H: Light

Name I/O Function

The serial port for connection with the main unit

RTS port for connection with the main unit

CTS port for connection with the main unit

VLCD power control H: Power supply

DSP: DC6726BRFPA225 (Control unit IC301)

Pin No. Port Name I/O Function

1 VSS - GND

2 MCLKT O Master clock for D/A converter

3 TXC I

4 CKY I Detection of transmit or Not transmit

5 DHLT O DSP check signal to Main MCU

6 VSS - GND

7 DREQ O Communication request to Main MCU

8 CVDD I Core power supply (1.2V)

9 VMIC O

10 DVDD I I/O power supply (3.3V)

11 VANI O

12 TDET O CTCSS detection output to Main MCU

13 VSS - GND

14 DRST I DSP reset

15 VSS - GND

16 CVDD I Core power supply (1.2V)

17 CLKIN I GND

18 VSS - GND

19 TMS I For CN305

20 CVDD I Core power supply (1.2V)

21 TRST I For CN305

22 OSCVSS - Oscillator GND

23 OSCIN I Oscillator input

24 OSCOUT O Oscillator output

25 OSCVDD I Oscillator CVDD

26 VSS - GND

27 PLLHV I PLL DVDD (3.3V)

28 TDI I For CN305

29 TDO O For CN305

30 VSS - GND

31 DVDD I I/O power supply (3.3V)

32 EMU[0] I/O For CN305

33 CVDD I Core power supply (1.2V)

34 EMU[1] I/O For CN305

35 TCK I For CN305

36 VSS - GND

37 NC O Not used

38 WE O Write enable for ﬂ ash memory

39 NC O Not used

40 VSS - GND

41 DQ[7] I/O Data bus for ﬂ ash memory

42 DVDD I I/O power supply (3.3V)

Detection of Reception or Transmis- sion

VOX transmit (MIC) signal output to Main MCU

VOX transmit (ANI) signal output to Main MCU

TS-590SG

SEMICONDUCTOR DATA

Pin No. Port Name I/O Function

43 DQ[6] I/O Data bus for ﬂ ash memory

44 CVDD I Core power supply (1.2V)

45 DQ[5] I/O Data bus for ﬂ ash memory

46 DQ[4] I/O Data bus for ﬂ ash memory

47 VSS - GND

48 DQ[3] I/O Data bus for ﬂ ash memory

49 DQ[2] I/O Data bus for ﬂ ash memory

50 DVDD I I/O power supply (3.3V)

51 DQ[1] I/O Data bus for ﬂ ash memory

52 DQ[0] I/O Data bus for ﬂ ash memory

53 CVDD I Core power supply (1.2V)

54 VSS - GND

55 DQ[15] I/O Data bus for ﬂ ash memory

56 DQ[14] I/O Data bus for ﬂ ash memory

57 CVDD I Core power supply (1.2V)

58 DQ[13] I/O Data bus for ﬂ ash memory

59 DQ[12] I/O Data bus for ﬂ ash memory

60 DVDD I/O I/O power supply (3.3V)

61 DQ[11] I/O Data bus for ﬂ ash memory

62 VSS - GND

63 DQ[10] I/O Data bus for ﬂ ash memory

64 DQ[9] I/O Data bus for ﬂ ash memory

65 CVDD I Core power supply (1.2V)

66 DQ[8] I/O Data bus for ﬂ ash memory

67 NC O Not used

68 DVDD I I/O power supply (3.3V)

69 VSS - GND

70,71 NC O Not used

72 VSS - GND

73 DVDD I I/O power supply (3.3V)

74 A[12] O Address bus for ﬂ ash memory

75 A[10] O Address bus for ﬂ ash memory

76 A[9] O Address bus for ﬂ ash memory

77 CVDD I Core power supply (1.2V)

78 VSS - GND

79 A[8] O Address bus for ﬂ ash memory

80 A[7] O Address bus for ﬂ ash memory

81 DVDD I I/O power supply (3.3V)

82 VSS - GND

83 A[6] O Address bus for ﬂ ash memory

84 A[5] O Address bus for ﬂ ash memory

85 CVDD I Core power supply (1.2V)

86 A[4] O Address bus for ﬂ ash memory

87 VSS - GND

88 A[3] O Address bus for ﬂ ash memory

Pin No. Port Name I/O Function

89 A[2] O Address bus for ﬂ ash memory

90 CVDD I Core power supply (1.2V)

91 A[1] O Address bus for ﬂ ash memory

92 DVDD I I/O power supply (3.3V)

93 A[11] O Address bus for ﬂ ash memory

94 A[0] O Address bus for ﬂ ash memory

95 VSS - GND

96 A[23] O Selection for extension I/O port

97,98 NC O Not used

99 VSS - GND

100 CS O Chip select for ﬂ ash memory

101 CVDD I Core power supply (1.2V)

102 NC O Not used

103 DVDD I I/O power supply (3.3V)

104 OE O Output enable for ﬂ ash memory

105 RYBY I Ready/ Busy signal for ﬂ ash memory

106 VSS - GND

107 DSCS I

108 DCLK I

109 VSS - GND

110 DSOUT I

111 DSIN O

112 DVDD I I/O power supply (3.3V)

113 SDTI0 I

114 VSS - GND

115 SDTI1 I

116 SDTO0 O

117 SDTO1 O

118 VSS - GND

119 SDTO2 O

120 NC O Not used

121 PDN O

122 NC O Not used

123 CVDD I Core power supply (1.2V)

124 VSS - GND

125 DVDD I I/O power supply (3.3V)

126,127 NC O Not used

128 CVDD I Core power supply (1.2V)

SPI0 slave chip select for Main MCU interface

SPI0 serial clock for Main MCU inter- face

SPI0 data input for Main MCU inter- face

SPI0 data output for Main MCU inter- face

Serial data input from A/D converter (IC66)

Serial data input from A/D converter (IC83)

Serial data output for D/A converter (IC72)

Serial data output for D/A converter (IC75)

Serial data output for D/A converter (IC78)

Reset for A/D converter and D/A con- verter

+ 125 hidden pages

KENWOOD TS-590SG SERVICE MANUAL

CONTENTS

DISASSEMBLY FOR REPAIR

Removing the torque changeover lever (G02-1858-03)

Mounting the torque changeover lever (G02-1858-03)

Precautions for Reassembly

CIRCUIT DESCRIPTION

Reference Signal Generator

LO1/ LO2/ LO3

Receiver Circuit

First Mixer

MCF Adjustment

IF Filter

Noise Blanker Circuit (NB Circuit)

Transmitter Circuit

DAC (IC75, IC78) and ADC (IC83) Signal Path

Digital Control Circuit

Display Circuit

COMPONENTS DESCRIPTION

Final unit (X45-398X-XX)

Control unit (XC1-021X-XX)

Display unit (XC1-0220-00)

TX-RX unit (XC1-024X-XX)

SEMICONDUCTOR DATA

Main MCU: F3651RDFCKFSA (Control unit IC306)

Panel MCU: F364AEDFBKFTA (Display unit IC103)

DSP: DC6726BRFPA225 (Control unit IC301)