Kenwood AT 230 Service Manual

Page 1

$KENWDDD ' 515

SERVICE MANUAL

TS-53OS/SP/D* 121132?qu

SP-230, VFO-240, [IT-230, PK-3*

HF TRANSCEIVER

For Service ManuaIs Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 40!

Tel:- 01544-351694 Fax:- ()1va
Emaila enmities©craurilromom

SP-230 TS-SBOS VFD-240 AT~230
CO NTE NTS
SPECIFICATION .......................... 2 COUNTER UNIT (X54-1540-OO) ............ 19
CIRCUIT DESCRIPTION .................... 3 PARTS LIST ............................ 20
AC VOLTAGE CONVERSION ................. 9 PACKING .............................. 27
INSIDE VIEWS .......................... 10 DISASSEMBLY .......................... 28
PC BOARD VIEWS/CIRCUIT DIAGRAMS ADJUSTMENTS ......................... 33
RECTIFIER UNlT IX431370-02) ............ 11 LEVEL DIAGRAM ........................ 45
ANT RELAY BOARD (J253015~04) .......... 11 VFO<24O .............................. 46
SWITCH BOARD (J25-3016-O3) ............. 11 AT<230 ................................ 48
FINAL UNIT (X56-1380-00I ............... 11 SCHEMATIC ABBREVIATION ............... 51
VFO UNIT (X40-1170-00) ............... 12,13 SCHEMATIC DIAGRAM (8 TYPE) ............. 53
AF UNIT (X49-1150-00) ................ 12,13 SCHEMATIC DIAGRAM (SP/D TYPE) ........ 53,54
IF UNIT (WIS-131000) ................ 14,15 BLOCK DIAGRAM ....................... 54
PLL UNIT (X50~1680~01) ............... 16,17 SP-230 ........................ BACK COVER
RF UNIT (X44-1360~01) .................. 18 PK-3 ......................... BACK COVER

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firs-530$

SPECIFICATIONS

[GENERAL]

Frequency Range.

160 m Band 1.8 ~ 2.0 MHz
80 m Band 35 ~ 4.0 MHz
40 m Band 7.0 ~ 7.3 MHz
30 m Band 101 ~ 10.15 MHz
(10.0 MHz WWV)
20 m Band 14.0 ~ 14.35 MHz
17 m Band 18.068 ~ 18.168 MHz
15 m Band21.0 ~ 21.45 MHz
* 12 m Band 24.89 ~ 24.99 MHz
10 m Band 280 ~ 29.7 MHZ
SSE/CW
Within 1 kHz during the first hour after 1 minute of warmup.
Within 100 Hz during any 30 minute period thereafter.
1 10VAC/120VAC/24OVAC, 50/60 Hz
Transmit: 295 watts
Receive: 27 watts (with heaters off)
333 (13.3) x 133 (5.3) x 333 (13.3) mm(inch)

Modes ....................
Frequency Stability ..

Power Requirement....
Power Consumption

Dimensions.

Weight......... 12.8 kg (28.2 lbs)

[TRANSMITTER] TS-53OS/SP TS-SSOD
" Final Power Input .................................... 220W PEP for $53 operation 160W PEP for SSE operation
180W DC for CW operation 130W DC for CW operation

Audio Input impedance .. 500!) ~ 50 k9

RF Output Impedance. 50.0 ~ 7552

Carrier Suppression . Better than 40 dB

Sideband Suppression Better than 50 dB

Spurious Radiation ...... Better than 60 dB

Harmonic Radiation Better than 40 dB

Audio Freq. Response. 400 to 2,600 Hz, within «6 dB

ALC Input -10V DC Max

- For Service Manuals Contact

Linear Amp Relay Contact Ratlng 100V DC 1 A MAgRlTHON TECHNICAL SER

[RECEIVER] °"%"!£Ei§2§¢'"°

lel:- 01844351694 Fax:- 01844352554

Receiver Sensitivity . Email:- enmirles®mauritromoom

0.25 #Vat 10dBS+N/N

Image Ratio. Better than 60 dB
IF Rejection .. Better than 70 dB
Receiver Selectivity
SSE/CW ................................................ 2.4 kHz (-6 dB), 4.2 kHz (-60 dB)
CW Optional Filter
YK-88C 500 Hz (-6 dB), 1 .5 kHz (-60 d8)
YK<88CN 270 Hz (-6 dB), 1.1 kHz (-60 dB)
SSB Optional Filter
YK-BBSN 1.8 kHz (-6 dB). 33 kHz (-60 dB)
Notch-filter Attenuation Better than 20 dB(1.5 kHz)
Audio Output Impedance .. 8 ~ 169
Audio Output ................... 1.5W (8.0)
NOTE: The circuit and ratings may be changed without notice due to developments in
technology.

NOTE: For the TS-53OSP shipped to the USA, and for the TS»5300.

" Will transmit on the 17 and 12 meter bands,
Diodes installed for preventing accidental transmission before government Amateur
authorization.

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TS-53OS

SCHEMATIC ABBREVIATION

Connector Terminal Connector Terminal
No, name No. name
VFO assy unit iXGO-1150-01) -6 B - 6V input
RLC From MODE sw S<18-3,5 AGO AGC °"
RlT R IT voltage input AGS AGC slow
VFB VFO B + 9V ()3 RFG Arm of RF gain control
G SSB From mode SW 5184
VFO VFO output (39v 2;9Vf . l l I
. O carrler V
PLL unlt (X50-1680-01) FISC Receiver RIT e e co" m
G) BAND SW input information ® XIT Transmitter Flli
A,B.C,D BCD code from counter unit HIT HIT voltage to VFO
® BLK Blanking signal FiTI RIT sw 53-1
12 B 4- 12V ALC ALC input from AF unit 031
® 1K Reference signal from PLL 024 ® R LT + 9V when transmit
CON To counter unit from PLL 029 RLR + 9V when receive
@ MK Fl Marker output Fl L Relay voltage
V50 VCO 0mm RF unit lX44~1360-01)
© t G) VFO VFO input
® CAFl Carrier output (D AUX~24.5 To counter unit + 9V on any band
FlLS MODE SW 8183 ® 2829 To counter unit + 9V on any band
TXC MODE sw Sis-3 W B + 9"
[FS IF shift arm of VR73 ® ANT Receiver antenna
® USB From 818-1 + 9v on uss RLR + W a (we
LSB From 5184 + 9v on LSB ® MKR Markef 59" 9
MS Calibrator sw 81-1 @ AGC AGC.'p
9 B + 9V RIF Recelver IF output
A TOP Transmit stop signal input for WARC
Counter unlt (X54-1540-00) 12 B + 12v
® 0.5 045 MHz shift signal MXB MlXer B + turn on signal
12 B + 12V 12 B + 12V
l2 B + 12V ® TlF Transmit IF signal input
CON Counter signal input 300A From IF unit + 300V
® BLK Blanking signal DRB Control grid bias for lZBY7A
1K Reference signal 1 kHz 931 Receiver bias voltage
A~D BCD input from PLL ® H Heater voltage
-6 B-SV 210A B+210V
@ AUX~28I3 Band information to PLL VCO VCO input
(D ~ © AUX~29u5 Band SW information to + 9V on any band DRV Drive VO'WQB 0 514GB
IF unit (X48-131D~00) NC Neutralization
12 B + 12V AF unit (X49-1150-00)
G) RIF Receiver IF input ® 353 +9V on $88 mode
NBI To noise blanker amp VXI V0)< 3'7} input
® Nsc; Noise blanker gate signal ® DET Detector signal from IF unit
210A B + 210v NBI Noise blanker amp input
® 21 OB B + 210v AV2 Arm of AF gain control
3003 B + 300v © AV3 Top of AF gain control
(9 300A B + 300v STE To ground in cw and cw NAR
@ CWN~SSB To NAR SW 54-12 KEV To ground in tune and USB/LSB
TIF Transceiver IF output SP Speaker internal
© AGC Output for AGC ® STS Side tone SW
DET _ Detector output 55 Stand by SW
(D 932 Receiver amp bias © vxs vox sw to ground when vox ON
CAR Carrier input VXD VOX delay control
C9) VXI To VOX circuit SP Speaker internal
TM Meter select sw 5,13 arm VH3 Final grid bias control
M S meter voltage KEY To ground in tune and USB/LSB
® ALM To ALC meter DC signal VRI Final grid bias control
MIC MIC input (9 AV Anti VOX signal input
NRM Processor SW OFF SS Stand by SW
PRC Processor SW 0N R L Relay voltage
® MVl Top of MIC gain control 9 B + 9V
MVZ Arm of MIC ga_in control RBl Bias for 01 RF amp on RF unit
C7) MXB B + to MlXer from 029 on AF unit
TOF TX slop signal for WAHC
DRB Bias for control grid of iZBY7A
5 1 For Service Manuals Conta
MAURITRON TECHNICAL SERVICES

8 Cherry Tree Rd. Chinnor

Oxon OX9 40!

Tel:- 01340351694 Fax:- 01844-3525
Emit WW1