Yaesu FTDX1200 Series Manual

©2015YAESU MUSEN CO., LTD.
Specications
Exploded View & Miscellaneous Parts
Block Diagram
Connection Diagram
Alignment
Board Unit (Schematics, Layouts & Parts)
MAIN Unit
CNTL Unit
LOCAL Unit
PA Unit
TUNER Unit
DSP Unit
DISPLAY-1 Unit
LED Unit
SW-A Unit
SW-B Unit
VR-A Unit
JACK Unit
MIC Unit
HF/50 MHz Transceiver
FTDX1200
Technical Supplement
EH058H90C
YAESU MUSEN CO., LTD.
Tennozu Parkside Building
2-5-8 Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-0002 Japan
YAESU USA
6125 Phyllis Drive, Cypress, CA 90630, U.S.A.
YAESU UK
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
Introduction
This manual provides technical information necessary
for servicing the FTDX1200 HF/50 MHz Transceiver.
Servicing this equipment requires expertise in handling
surface-mount chip components. Attempts by non-
qualified persons to service this equipment may result
in permanent damage not covered by the warranty, and
may be illegal in some countries.
Two PCB layout diagrams are provided for each double-
sided circuit board in the Transceiver. Each side of is
referred to by the type of the majority of components
installed on that side ("leaded" or "chip-only"). In
most cases one side has only chip components, and
the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs,
etc.), or leaded components only.
While we believe the technical information in this
manual to be correct, YAESU MUSEN assumes no
liability for damage that may occur as a result of
typographical or other errors that may be present. Your
cooperation in pointing out any inconsistencies in the
technical information would be appreciated.
Contents
Important Note
1) This transceiver was assembled using Pb (lead) free solder, based on the RoHS specication.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this ap-
paratus. The solder stated above utilizes the alloy composition required for compliance with the lead-free
specication, and any solder with the above alloy composition may be used.
2) Risk of explosion if baery is replaced by an incorrect type. Dispose of used baeries according to the instruc-
tions.

FTDX1200 Technical Supplement
Specications
SPECIFICATIONS-1
General
Rx Frequency Range: 30 kHz - 56 MHz (operating)
1.8 MHz - 54 MHz (specied performance, Amateur bands only)
Tx Frequency Ranges: 1.8 MHz - 54 MHz (Amateur bands only)
Frequency Stability: ±0.5 ppm (aer 1 minute @+14 °F to +140 °F [–10 °C to +60 °C])
Operating Temperature Range: +14 °F to +122 °F (–10 °C to +50 °C)
Emission Modes: A1A (CW), A3E (AM), J3E (LSB, USB), F3E (FM),
F1B (RTTY), G1B (PSK31)
Frequency Steps: 1/5/10 Hz (SSB, CW, & AM), 100 Hz (FM)
Antenna Impedance: 50 Ohms, unbalanced
16.7 - 150 Ohms, unbalanced (1.8 MHz - 29.7 MHz)
25 - 100 Ohms, unbalanced (50 MHz - 54 MHz)
(Tuner ON, 1.8 MHz - 50 MHz Amateur bands, TX only)
Power Consumption (Approx.): Rx (no signal) 1.8 A
Rx (signal present) 2.1 A
Tx (100 W) 23 A
Supply Voltage: DC 13.8 V ± 10% (Negative Ground)
Dimensions (WxHxD): 14.4” x 4.5” x 12.3” (365 x 115 x 312 mm)
Weight (Approx.): 20.9 lbs (9.5 kg)
Transmier
Power Output: 5 - 100 was (2 - 25 was AM carrier)
Modulation Types: J3E (SSB): Balanced,
A3E (AM): Low-Level (Early Stage),
F3E (FM): Variable Reactance
Maximum FM Deviation: ±5.0 kHz/±2.5 kHz
Harmonic Radiation: Beer than –50 dB (below 30 MHz)
Beer than –63 dB (above 30 MHz)
SSB Carrier Suppression: At least 60 dB below peak output
Undesired Sideband Suppression: At least 60 dB below peak output
3rd-order IMD: –31 dB @14 MHz 100 was PEP
Bandwidth: 3 kHz (LSB/USB), 500 Hz (CW), 6 kHz (AM), 16 kHz (FM)
Audio Response (SSB): Not more than –6 dB from 300 to 2700 Hz
Microphone Impedance: 600 Ohms (200 to 10 kOhms)

FTDX1200 Technical Supplement
Specications
SPECIFICATIONS-2
Receiver
Circuit Type: Triple-conversion Superheterodyne
Intermediate Frequencies: 40.455 MHz
455 kHz
30 kHz (SSB, CW, RTTY, PSK31, PACKET)
24 kHz (AM, FM, PACKET-FM)
Sensitivity: SSB/CW (BW: 2.4 kHz, 10 dB S+N/N)
0.16 µV (1.8 - 30 MHz) (RF AMP 2 “ON”)
0.125 µV (50 - 54 MHz) (RF AMP 2 “ON”)
AM (BW: 6 kHz, 10 dB S+N/N, 30 % modulation @400 Hz)
2 µV (0.5 - 1.8 MHz) (RF AMP 2 “ON”)
2 µV (1.8 - 30 MHz) (RF AMP 2 “ON”)
1 µV (50 - 54 MHz) (RF AMP 2 “ON”)
FM (BW: 15 kHz, 12 dB SINAD)
0.5 µV (28 - 30 MHz) (RF AMP 2 “ON”)
0.35 µV (50 - 54 MHz) (RF AMP 2 “ON”)
There is no specication for frequency ranges not listed.
Selectivity (WIDTH: Center): Mode –6 dB –60 dB
CW/RTTY/PSK31 0.5 kHz or beer 750 Hz or less
SSB 2.4 kHz or beer 3.6 kHz or less
AM 6 kHz or beer 15 kHz or less
FM 12 kHz or beer 25 kHz or less
Image Rejection: 70 dB or beer (1.8 MHz - 28 MHz Amateur bands)
60 dB or beer (50 MHz Amateur band)
Maximum Audio Output: 2.5 W into 4 Ohms with 10% THD
Audio Output Impedance: 4 to 8 Ohms (4 Ohms: nominal)
Conducted Radiation: Less than 4 nW
Specications are subject to change, in the interest of technical improvement, without notice or obligation,
and are guaranteed only within the amateur bands.

EXPLODED VIEW-1 FTDX1200 Technical Supplement
Exploded View
R0115070A
HANDLE SHAFT
RA096120A
TOP CASE
R4115020B
HANDLE END
R3084747
HANDLE
RA0734000
PORON SHEET (120802) (2 pcs)
S4000056
CASE LEG FF003-AR791-0 (4 pcs)
RA0988500
SPONGE RUBBER(80X110)
R7153662
HIMERON
RA0006300
SP NET
RA14239A0
BOTTOM CASE
RA0988400
GASKET(LOCAL)
R7133800B
WASHER(REG) (4 pcs)
RA1507700
LEG
RA1507700
LEG
RA1507500
LEG (F)
RA1507600
LEG (IN)
RA0988300
GASKET(12X210) (2 pcs)
RA0994000
PORON SHEET(151505)
RA0994000
PORON SHEET(151505)
①
①
①
REF. YAESU P/N Description Qty.
①U2030807 BINDING HEAD SCREW M3X8B 5
②U31406007 OVAL HEAD SCREW M4X6B 6
③U31410020 OVAL HEAD SCREW M4X10SUS 2
④U25305007 BIND HEAD TAPTITE-S M3X5B 4
⑤U34308001 FLAT HEAD TAPTITE-B M3X8 6
⑥U31306007 OVAL HEAD SCREW M3X6B 18
⑦U24410007 BIND HEAD TAPTITE-B M4X10B 2
⑧U9900254 SPECIAL SCREW M4X20B(W/WASHER) 2
⑨U70003007 PLAIN WASHER FW3B 4
Non-designated parts are available only as psrt of a designated assembly.
①
①
②
②
③
⑤
⑤
⑤
⑤
⑤
⑤
③
②
②
②
④
④
④
④
②
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥
⑥⑥
⑦
⑦
⑧
⑧
RA1499500
PORON SHEET(25x35)
⑥
RA1499500
PORON SHEET(25x35)
⑨
⑨
⑨
⑨

EXPLODED VIEW-2 FTDX1200 Technical Supplement
Exploded View
RA138580A
RUBBER RING(MAIN)
RA1505500
WINDOW(TFT)
RA138520A
ENCODER KNOB(OUT)
RA1507900
FRONT PANEL ASSY
RA1385100
ENCODER KNOB(IN)
RA1384900
VOLUME KNOB(IN)
RA138500A
VOLUME KNOB(OUT)
LED-UNIT
RA1382300
SHIELD CASE COVER
RA1384600
SPACER(TFT)
DISPLAY-1-UNIT
RA1384500
SHIELD CASE COVER
DS7001
RA1384400
SHIELD CASE(TFT)
RA1384700
GASKET (8x48) (3 pcs)
RA1480300
DOUBLE FACE(TFT)
RA1505900
RUBBER KNOB(PWR)
RA1506200
RUBBER KNOB(MOX) (7 pcs)
S5000329
FITTING MET41-0191
RA1499600
PANEL FRAME (H058)
VR-A-UNIT
DISPLAY-1-UNIT
SW-B-UNIT
RA1506100
RUBBER KNOB(R)
Q9000953
REL20-050NS
Q9000833
RMS20-250-201-1V
R7155600
HIMERON (6 pcs)
RA1528400
WASHER(PE)
RA138590A
ROTARY KNOB(CLAR)
RA150630A
KNOB MAIN ASSY
RA150640A
KNOB SKIRT
RA0979300
HOLDER(SPRING)
①
⑤
⑤
②
③
④
④④
④
④
④
④
④
④
④
④
④
④
SW-A-UNIT
④
④
④
④
④④
④
④
④
④
④
④
④
④
MIC-UNIT
JACK-UNIT
⑤
⑤
⑤
⑤
⑤
⑤
REF. YAESU P/N Description Qty.
①U9900211 WAVE WASHER WW-16011(SUS) 1
②U6200900 VOLUME NUT 9X12X2 1
③U70015001 PLAIN WASHER FW9X14X0.5 1
④U24105001 BIND HEAD TAPTITE-B M2X5(3) 30
⑤U24206001 BIND HEAD TAPTITE-B M2.6X6 10
⑥U02204001 SEMS SCREW SM2.6X4 4
Non-designated parts are available only as psrt of a designated assembly.
RA1505500
WINDOW(LED)
RA152820A
WASHER(FELT)
④
④
④
⑤
RA097120A
LEAF SPRING
RA1486700
PANEL FRAME(2)
⑥
⑥
⑥
⑥
RA1506000
RUBBER KNOB(MENU)
⑤

EXPLODED VIEW-3 FTDX1200 Technical Supplement
Exploded View
RA0962100
BLIND SHEET (SP)
RA1507100
DISPLAY PANEL (58H)
RA095760B
CHASSIS
RA0962000
SP HOLDER
RA0962400
DOUBLE FACE (SP)
RA0990400
SPONGE RUBBER
RA0866600
PORON SHEET (14) (2 pcs)
P1090984
CONNECTOR MDR-2 (2 pcs)
RA0962300
SPONGE RUBBER
RA096180A
SHIELD PLATE(PA)
FN0001
REF. YAESU P/N Description Qty.
①U24306001 BIND HEAD TAPTITE-B M3X6 20
②U24308001 BIND HEAD TAPTITE-B M3X8 4
③U65500102 WING NUT N5NI 1
④U72005002 TOOTHED LOCK WASHER OW5NI 2
⑤U70005002 PLAIN WASHER FW5NI 2
⑥U66500002 FLANGE NUT N5NI 1
⑦U51525020 HEX SOCKET HEAD SCREW M5X25SUS 1
Non-designated parts are available only as psrt of a designated assembly.
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
②
②
②
②
①
①
①
①
①
③
④
④
⑤
SP0001
⑤
⑥
⑦
RA0733800
BLIND SHEET (1010)

EXPLODED VIEW-4 FTDX1200 Technical Supplement
Exploded View
REF. YAESU P/N Description Qty.
①U24306001 BIND HEAD TAPTITE-B M3X6 19
②U03308002 SEMS SCREW ASM3X8NI 9
③U03306002 PAN HEAD SCREW ASM3X6NI 2
④S5000328 SPACER QBSBE311 1
Non-designated parts are available only as psrt of a designated assembly.
②
②
②②
②
②
②
②
②
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①①
①
④
TUNER-UNIT
RA096190C
ThermalConductivePad
RA0415200
GROUND PLATE (4 pcs)
PA-UNIT
①
③③
R0131680
SHIELD COVER
S5000331
SHORT BAR H101
Q6000114
TERMINAL B4 AG M3

EXPLODED VIEW-5 FTDX1200 Technical Supplement
Exploded View
REF. YAESU P/N Description Qty.
①U24306001 BIND HEAD TAPTITE-B M3X6I 10
②U06306001 SEMS SCREW OM3X6 4
Non-designated parts are available only as psrt of a designated assembly.
①
①
①
①
①
①
①
①
①
①
RA0423200
LOCK PLATE
RA0978800
SHIELD CASE COVER
RA0470800
ELEC. COND TAPE (A)
RA0961500
SHIELD CASE COVER
DSP-UNIT
LOCAL-UNIT
RA0961400
SHIELD CASE(DSP)
②
②
②
②
RA1179900
TUBE (SI)

EXPLODED VIEW-6 FTDX1200 Technical Supplement
Exploded View
REF. YAESU P/N Description Qty.
①U24306001 BIND HEAD TAPTITE-B M3X6 20
②U24308001 BIND HEAD TAPTITE-B M3X8 3
Non-designated parts are available only as psrt of a designated assembly.
①
①
①
①
①
①
①
①
①
RA0830800
SHIELD CASE COVER
CNTL-UNIT
MAIN-UNIT
①
①
①
②
②
②
①
①
①
①
①
①
①
①
RA1152400
SHIELD CASE COVER
RA0961700
SHIELD CASE COVER
RA0830400
SHIELD CASE COVER

BLOCK DIAGRAM-1 FTDX1200 Technical Supplement
Block Diagram