Kenwood Ts-2000x All Mode Multi-band Transceiver Service Manual

© 2000-12 PRINTED IN JAPAN
B51-8558-00 (
N)
 889
ALL MODE MULTI-BAND TRANSCEIVER
TS-2000/X
SERVICE MANUAL
CIRCUIT DESCRIPTION ............................. 2
DESCRIPTION OF COMPONENTS ......... 24
SEMICONDUCTOR DATA ....................... 34
PARTS LIST .............................................. 51
EXPLODED VIEW ..................................... 93
PACKING .................................................. 97
ADJUSTMENT ......................................... 98
TERMINAL FUNCTION...

2
TS-2000/X
Overview of the Operation
The TS-2000/X basically consists of an all-mode-receiver
incorporating an IF/AF DSP for satellite communication with
an independent FM/AM sub-receiver for the VHF and UHF
bands.

Overview of the operation of the all-mode trans-
ceiver unit (main band side) with an IF/AF DSP
for satellite communication
The receiver unit has an independent front end for each
of the HF, 50MHz, 144MHz, 430MHz and 1.2GHz bands
(some products do not support the 1.2GHz band).  The cir-...

3
TS-2000/X
68.985MHz
75.825MHz
TX MIX
TX MIXTX MIX TX MIX
TX MIX
69.085MHz
10.695MHz
10.595MHz
75.925MHz
RX MIX RX MIXRX MIXDET
TCAR
10.583MHz
455kHz
LO3
11.150MHz LO1HF
75.955~
129.085MHzLO2
58.390~
65.230MHzRCAR
467kHz
41.795MHz
LO1TX
183.795~418.205MHz (K)
185.795~398.205MHz (E)
RX MIXRX MIX41.895MHz
SUB
RX MIX
58.525MHz LO1RX
183.895~
418.105MHz (K)
185.895~398.105MHz (E)
SLO2
58.070MHz
TX MIXTX MIX
135.395MHz
RX MIXRX MIX135.495MHz
1.2GLO1
1104~
1165MHzLO31
31.2MHz
Mixer
IF detector
÷2
SLO1...

4
TS-2000/X
HF LO2
When the HF and or 50MHz band is operating, the
HF LO2 VCO (Q409) generates 65.230 to 58.390MHz.  (See
Table 1, frequency configuration.)
The 15.6MHz reference signal fstd is input to pin 8 of the
PLL IC (IC401) for HF LO2, divided into 1/226 and 1/319 in
IC401 to produce comparison frequency fø of 69.027 to
48.903kHz.
The output signal from the VCO (Q409) goes to pin 6 of
IC401, its frequency is divided into 1/945 and 1/1194 in
IC401, compared with comparison frequency fø by a phase...

5
TS-2000/X
144MHz LO1
When the VHF band is operating in the main band, the
VHF REF VCO (Q441) generates 36.057 to 37.288MHz (K),
36.450 to 36.842MHz (E).  (See Table 2, Frequency Configu-
ration.)
The output signal from the DDS (IC406) is input to pin 8
of the PLL IC (IC411) for VHF REF and divided into 1/16 in
IC411 to produce comparison frequency fø 2 of 563 to
583kHz (K), 569 to 576kHz (E).
The output signal from the VCO (Q441) goes to pin 6 of
IC411 and its frequency is divided into 1/64 in IC411,...

6
TS-2000/X
Display frequency LO1 OUT IC412ÅF DDS output (MHz)
f
RX (MHz) (MHz) LMX2306TMX IC407 : AD9835BRU
Start Stop R N
420.000000 (K) 425.999999 (K) LO1 16 726 f
DDS
425.000000 (K) 431.499999 (K)  = fRX – IF 736  
= fRX – IF 
*R
430.000000 (E)          N
431.500000 (K,E) 435.499999 (K,E) 747
435.500000 (K,E) 439.499999 (K,E) 754
439.500000 (K,E) 443.499999 (K) 762
440.000000 (E)
443.500000 (K) 447.999999 (K) 770
448.000000 (K) 449.999999 (K) 778
IF = RX : 41.895
TX : 41.795
Table 3 Main UHF band...

7
TS-2000/X
1.2GHz Unit Local Oscillator
The 12LO31 signal (31.2MHz) is quadrupled to 124.8MHz
in Q14 and 15.  This signal is sent to the mixers of the trans-
mitter section (Q1 and Q2) and the mixers of the receiver
section (Q7 and Q8) In the DDS (C4) , 8.323~8.488MHz are output using
12LO31 as the reference signal.  This signal passes through
a filter (CF1 and CF2) and is input to the mixers for reference
PLL signals (Q313 and 314). In Q313 and Q314, the DDS output is mixed with
12LO31 (31.2MHz) and an...

8
TS-2000/X
DDS IC408 : AD9835BRU
HF TX/RX LO1 LSB USB CW CW-R
RX TX RX TX RX TX RX TX
Filter offset –1.5k –1.5k +1.5k +1.5k +0.7k +0.7k –0.7k –0.7k
RIT +(D RIT) – +(D RIT) – +(D RIT) – +(D RIT) –
XIT – +(D XIT) – +(D XIT) – +(D XIT) – +(D XIT)
SLOPE H +(SSB H) – –(SSB H) – –(CW H) – +(CW H) –
10.695MHz Filter Adj.+(D 10.695) – –(D 10.695)–––––
HF TX/RX LO1 FSK FSK-R AM FM
RX TX RX TX RX TX RX TX
Filter offset –(1.5k–Fcenter) 0 +(1.5k–Fcenter) 0 0 0 0 0
RIT +(D XIT) – +(D RIT) – +(D RIT) – +(D RIT) –
XIT...

9
TS-2000/X
DDS IC4 : AD9851BRS
1.2GHz TX/RX LO1 LSB USB CW CW-R
RX TX RX TX RX TX RX TX
Filter offset –1.5k –1.5k +1.5k +1.5k +0.7k +0.7k –0.7k –0.7k
RIT +(D RIT) – +(D RIT) – +(D RIT) – +(D RIT) –
XIT – +(D XIT) – +(D XIT) – +(D XIT) – +(D XIT)
SLOPE H +(SSB H) – –(SSB H) – –(CW H) – +(CW H) –
10.695MHz Filter Adj.+(D 10.695) – –(D 10.695) –––––
1.2GHz TX/RX LO1 FSK FSK-R AM FM
RX TX RX TX RX TX RX TX
Filter offset –(1.5k–Fcenter) 0 +(1.5k–Fcenter) 0 0 0 0 0
RIT +(D XIT) – +(D RIT) – +(D RIT) – +(D...

10
TS-2000/X
RCAR DDS IC601 : AD9835BRU
LSB USB CW CW-R FSK FSK-R AM FM
BASE 467 (kHz)
HF Filter offset +1.5k –1.5k –0.7k +0.7k +(1.5k–Fcenter) –(1.5k–Fcenter) 0 0
CW pitch – – –(PITCH) +(PITCH) – – – –
FSK tone H – – – – +2.125k–2.125k–FSK SHIFT––
FSK tone L – – – – +1.275k–1.275k–FSK SHIFT––
SLOPE L +(SSB L) –(SSB L) –(CW L) +(CW L) +(FSK L) –(FSK L) – –
455kHz Filter Adj. +(D 455) –(D 455) – – – – – –
144 Filter offset +1.5k –1.5k –0.7k +0.7k +(1.5k–Fcenter) –(1.5k–Fcenter) 0 0
MHz CW pitch – –...