Yaesu FT-23R MKII Manual

« Н И '
l i l l ll «
FT-23R
TECHNICAL SUPPLEMENT
YAESU MUSEN CO., LTD.
C.P.O. BOX 1500, TOKYO, JAPAN
YAESU U.S.A.
17210 E war » R ., Cerrito», California 90701, U.S.A.
YAESU EUROPE B.V.
Snipweg 3. 1118 A A Schiphol, The Netherlan »

E atly an late m o els сап be listin guishe by the location
o f the clon e sw itch , as shown below.
CLONE SWITCH
OfSJ — —OFF
BUHON COVERS
CLONE SWITCH
Early Model Late Model

CNTL UNIT
//PD4066BG (01008)
/ PD4001BG (01009)
OUT
PST523G (01007)
C O LLECTO R
2SA1162GR (SG)
2SC2712GR (LG)
FA1A4M (L33)
(01002.1012)
01003,10044
1005,1006 I
1010
(01011.1013)
ANODE
CATH OD E
Mrtrlted Surface 1SS181 (A3) .
(01001.1002.1008)
CATHO D E
ANO D E
ISS 184 (83) : (01007)
Marked Surface SLM-23VMW (01006)
(LED)
(obverse view of -microprocessor" side)
(reverse view of -display" side)

n~~nOQgSl
C N TL UNIT
(reverse view of -microprocessor" side)
1 -9
(obverse view of -display" side)

T.CALL/SOL OFF
EXT MIC
EAR
RESISTOR VALLES ARE IN n. 1/lOW:
CARACITOR VALUES ARE IN f . SOwv
UN-ESS OTHERVISE NOTED.
IT ) CAP AC HORS ARE TANT AL UM. 16*v
CNTL UNIT

ALIGNMENT
The FT-23R has been carefu lly alłgne by
highly skille technicians at ihe factory, an
ls esigne so that no Further allgn m ent
shoul ever be require . However, in the
unlikely event of a component failure, re-
alignm ent may be necessary. A li component
replacement an service shoul be perform e
only by an authorize Yaesu représentative, or
the warranty policy may be voi e .
The following test equipment is require for
alignment:
RF Signal Generator:
calibrate output level at 150 MHz
Deviation Meter (linear etector)
Oscilloscope
AF M illivoltm eter
SIN AD Meter
Inline Wattmeter: 150 MHz
Regulate DC Power Supply:
a justable from 4 to I7V, 2A
50-ohm Non-reactive Dummy Loa : 10W at 150 MHz
Frequency Counter: 0.2ppm accuracy at 150 MHz
AF Signal Generator
DC Voltmeter: high impé ance
CA SE D ISASSEM BLY
1.
2.
3.
4.
Make sure the transceiver is o ff. Rem ove
the har or soft case, if use , an remove
the battery pack.
Remove the four screws affixing the battery
spring plate on the bottom o f the transcei
ver, an carefully remove the plate.
Rem ove the four screws affixin g the top
panel, an carefully remove the panel.
Remove the two screws affixin g the front
an rear halves o f the case, an gently
separate the halves, using care not to
stress the interconnecting wires.
&
BOARD LAYOUT
FRONTEND UNIT IF UNIT
METER UNIT
AKT SW UNIT
MOTWER BOARD
VCO UNIT
MC AMP UNIT
PCL UNIT
UNIT
1 "Il

I. PLL & TRANSMITTER
Set up the test equlpment as shown in the
iagram below for transmuter alignment. A 
just the supply voltage to 12.0V for all steps
except Transmitter Output Power alignment (В).
Л. PLL VCV (Varactor Control Voltage)
(1) Connect the DC Voltmeter between C416 on
the PLL Unit an chassis groun .
(2) Whlle transmitting on 144.000 MHz a just
transformer T501 on the VCO Unit for 1.35
:0.05 VDC.
(3) While receiving on 144.000 MHz a just
trim m er TC501 on the V C O Unit for 1.1
гО.05 VDC.
(4) Retune the transceiver an confirm the
high-en VCV for the transceiver version
being aligne , as follows:
Version Frequency Tx VCV Kx VCV
A. C. K 148.000 1.8 V 1.6 V
B. D 146.000 1.7 V 1.5 V
PLL & TRANSMITTER ALIGNMENT SETUP
Sampling
B. Transmitter Output Power
(1) Tune the transceiver to ban center (145
or 146 M H z), an set the LOW switch to
the un epresse position.
(2) Increase the supply voltage to 12.5V.
(3) A just TC I0I on the Mother Boar for peak
output power on the W attm eter (at least
5W with less than 1.5A supply current).
(4) Press the LOW switch on the top panel,
an a just VR105 on the Mother Boar for
0.5 watts output.
(5) Return the supply voltage to 12.0V.
C. PLL Reference Frequency
With the transceiver tune to ban center (145
or 146 MHz), a just TC40I on the PLL Unit, if
necessary, so that the isplay frequency mat-
ches the frequency counter when transmitting.
D. Mo ulation Level
( I ) With the transceiver tune to ban center
(145 or 146 MHz), a just the AF generator
for 25mV output ai 1 kHz to the MIC Jack.
(2) A just VRI04 on the Mother Boar for ±4.5
kHz éviation on the éviation meter.
PLL & TRANSMITTER ALIGNMENT POINTS
1 -12

S-meter Sensitiviiy
Set up the test equipment as shown above for
receiver allgnment.
A. Sensitivlty
(1) With the transceiver an RF signal gen
erator both tune to ban center (145 or
146 MHz), set the generator for ±3.5 kHz
éviation of I kHz tone mo ulation, an
set the output level for 40 Bu at the
antenna jack.
(2) Preset VR103 on the Mother Boar fully
clockwise.
(3) A just TI01 through T104 on the Mother
Boar for maximum S-m eter In ication,
re ucing the generator level If more than
four bargraph segments turn on.
After step (3 ), generator level shoul be 0.2
uV or less for !2 B SINAD. Perform the follow-
ing a just ment next.
II. RECEIVER
(1) With the transceiver an RF signal gen
erator set up as in step ( 1 ) of the above
Sensitivity a justment proce ure, set the
signal generator for 20 Bu output.
(2) A just VR103 on the Mother Boar so that
all bargraph segments are just turne on.
(3) Re uce the generator output so that only
two bargraph segments are on, an conflrm
that the generator output level is now 5
Bu or less.
B.
RECEIVER ALIGNMENT SETUP
RECEIVER ALIGNMENT POINTS
1 -13

PARTS LIST
MAIN CHASSIS
Symbol No. Part No. Name 6 Description
CONNECTOR
J01 P1090541 BNC-RM ANT CERAM IC FILTER
CF101 H3900280 LF-B12
M ISCELLAN EOUS
R3116390 D1AL Knob RESISTORS
R3116620 VOL.SQL Knobs RI 12 J24205479 RMC 1/10T4R7J 1/10W 4.70
K3508300 PTT Button Cover R113 J24205100 " " 100J " 10O
R3508310 UNLOCK Lever R102 J24205220 " " 220J " 220
RÛ117370 Coil Sprine R106,109 J24205221 и « 221J " 220Ü
R0507950B Batterv Spring Plate R 110 J24205331 " " 331J " 3300
R35036S0A Top Pnnel Gasket R ill J24205102 " " 102J " IkO
R3S07960 Jack Seal Gasket RI 14 J24205103 " « 103J " lOkO
R107.118A.P J24205223 H ” 223J " 22kO
R116 J00215223 Carbon film 1/8W 22kO
R101 J24205333 RMC 1/10T333J l/10W33kO
R 108,115 J24205473 " " 473J " 47kO
R103-105.117 J24205104 H " 104J " lOOkO
MOTHER BOARD
Symbol No. Part No Name & Description
F2838104A Printe Circuit Boar
C028384AA PCB with Components POTENTIOMETERS
VR101 J60800128 K091K0004-20KB 20kO В
VR102 J60800129 K0911100D-20KA 20kO А
VR103-105 J51776473 RH0411CS4J 47kß В
CAPA CI TO RS
C104-106 K22170203 Chip Ceramic 50WV 2pF CH
(C2012CH1H020CFA)
C107 K22170204 n rt N 3pF "
(C2012CH1H030CFA)
CI 01,108 K22170206 " " " 5pF "
(C2012CH1H050CFA)
C130.133 K22170209 II n и gpp и
(C2012CH1H080DFA)
C143 K22170211 " " " lOpF "
(C2012CH1H100DFA)
IC
Q101 G 1090558 LA4145 C103 K22170221 •» " " 27pF "
(C2012CH1H270JFA)
C ll l , 122,125-127
131.135-141 K22170805 " " " O.OOlpF В
(C2012B1H102MFA)
PW R -M O D U LE C102,132,134 K22170817 ........................ O.OlpF и
(C2012BIH1Ö3MFA)
Q107 G1090732 M57796MA C128.142 K22171008 " " " 0.047pF F
(C2012F1H473ZFA)
0109,110,112,115
119,120,129 K22143904 " H 25WV O.lpF D
(C3216D1E104MFA)
TRANSISTORS
0102 G3111627G 2SA1162GRTE8SR C121 K78130001 Tantalum 20WV 0.47pF
(F951D474MRA AF102)
0103 G3327127G 2SC2712GRTE85R
Q104 G3070001 FA1A4M CI 13,118,123 K40129052 Electrolytic 16WV 10pF
(RC3-16V100M)
0105 G3333567 2SC3356-T2B
0106 G3329547 2SC2954-T2B CI 14,124 K40129038 " " 16WV lOOpF
(RC2-16V101M)
C116.117 K40089020 " " 6.3WV lOOpF
(RC3-6V101M)
DIODE
D101 G2070009 1SS184TE85R Si
TRIMM ER CAPAC1TOR
TC101 K91000149 VCT31E161A 20pF
CRYSTAL FILTER
XF101 Hl 102114 10Ш5ВМ 10.7 MHz
1-14

TRANSFORMERS If UNIT
T101 L0021416 145MHz S m bol No. Part No. Nam e & Description
T102-104 L00214 1 8 иF2838102 Printe Circuit Boar
C028382AA PCB with Components
INDUCTORS
LlO l.l02 LI 190275 LAL02NAR22M 0.22pH IC
LI 03 LI 020671 Q302 G1090698 TK10420M
CONNECTORS TRANSISTOR
J101 P0090599 1L-Y-5P-S15T2-EF Q301 G3326207B 2SC2620QBTR
J102 P0090601 IL-Y-14P-S15T2-EF
J103 P0090598 IL-Y-4P-S15T2-EF
PlOKwlth wire) T9205436 DIODES
D301.302 G2070007 1SS226TE85L Si
FRONT END UNIT CRYSTAL
S mbol No Part No. Name & Description X301 H0102773 UM-1 10.245MHz
F2838111A Printc Circuit Boar
C02838BAA PCB with Components
CERAMIC DISCRIMINATOR
CD301 H7900260 D455C
FETS
Q201.202 G3803027Y 2SK302YTE85R
RESISTORS
R305 J24205101 RMC 1/10T101J 1/10W100Q
DIODES R304 J20205471 " " 471J " 470Q
D201-203 G2090248 1T32 Varactor R311 J24205152 " " 152 J " 1.5kO
R301.307.308 J2420S222 " " 222J " 2.2kß
R314 J24205392 " " 392J " 3.9kO
R315 J24205472 " и 472J " 4.7kO
RESISTORS R3Î3 J24205682 " " 682J " 6.8kQ
R201 J24205560 RMC 1/10T 560J 1/10W 560 R309.316 J24205103 " " 103J " lOkü
R206.209,2io J242C5101 " " 101J и 100Q R303.310 J24205473 " ” 473J •' 47kO
R207 J24205471 " " 471J " 470Q R306 J24205823 " и 823J " 82kQ
R202-204 J24205104 и " 104J " lOOkß R302 J24205224 " " 224J " 220kfl
R205 J24205474 *' " 474J " 470кП R312 J24205474 " " 474J " 470kQ
CAPAO TORS CAPACITORS
C202,203,205,207 K22170221 Chip Ccramic 50WV 27pF CH
(C2012CH1H270JFA) C303 K22170213 Chip Ccramic 50WV 12pF CH
(C2012CHIH120JFA)
0201,210 K22170805 " " " O.OOlpF В
(C2012B1H102MFA) 0304,310 K22170229 " • " 56pF "
(C2012CH1H560JFA)
0206,209 K22170817 " " " O.OlpF "
(C2012B1H103MFA) C305 K22170237 " и " 120pF "
(C2012CH1H121JFA)
C208 K22171008 " " " 0.047pF F
(C2012F1H473ZFA) C309 K22170239 " " " 150pF "
(C2Q12CH1H151 JFA)
0204 K22141904 " " 25WV O.lpF D
(C3216D1E104MFA) C315 K22170243 " n n 220pF " (C2012CH1H221 JFA)
0302,306,314 K22170805 " " " O.OOlpF В
(C2012B1H102MFA)
0301,312,317 K22170817 " " O.OlpF "
(C2012B1H103MFA)
INDUCTORS
L201 LI 190292 LAL02NA5R6K 5.6pH 0307,308,313 K22141904 " " 25V O.lpF D
(C3216D1E104MFA)
L202 L1190289 LAL02NA3R3K З.ЗрН 0316,318 K78120013 Chip Tantalum 10WV lpF
(F951C105MR AAF1Q2)
1 - 15