Yaesu FTDX3000 User Manual

FT
DX
3000 Technical Supplement
Alignment
ALIGNMENT-1
Introduction and Precautions
The following procedures cover adjustments that
are not normally required once the transceiver
has le the factory. However, if a problem occurs
during normal operation due to component failure;
realignment may be required aer the faulty com-
ponents have been replaced.
We recommend that authorized Yaesu Techni-
cians, who are experienced with the circuitry and
fully equipped to repair and align our products,
perform repairs. If a fault is suspected, contact the
selling dealer for instructions regarding repair.
Authorized Yaesu Technicians have the latest infor-
mation to align all circuits and make complete per-
formance checks to ensure compliance with factory
specications aer repairs.
Those who do undertake any of the following
alignments are cautioned and proceed at their own
risk. Problems caused by unauthorized aempts at
realignment are not covered by the warranty poli-
cy.
Vertex Standard must reserve the right to change
circuits and alignment procedures in the interest of
improved performance, without notifying owners.
Under no circumstances should any alignment be
aempted unless the normal functions and opera-
tion of the transceiver are clearly understood, the
cause of the malfunction has been clearly identied
and all faulty components replaced. The need for
realignment should be determined to be absolutely
necessary.
The following test equipment (and a thorough fa-
miliarity with its correct use) is necessary for cor-
rect realignment. Most steps do not require all of
the equipment listed. The interactions of some ad-
justments may require that more complex adjust-
ments be performed in a sequence. Do not aempt
to perform only a single step unless it is clearly iso-
lated electrically from all other steps. Have all test
equipment ready before beginning, and follow all
of the steps in a section in the order they are pre-
sented.
Required Test Equipment

RF Signal Generator

AF Signal Generator

Spectrum Analyzer good to at least 1 GHz.

Frequency Counter

SINAD Meter

RF Millivoltmeter

Electronic Load

Digital DC Voltmeter (high-Z, 1 M-Ohm/V)

DC Voltmeter

DC Ammeter (20 A)

Ohmmeter

50-Ohm Dummy Load (100/200 was)

In-Line Wameter (150/300 was, 50-Ohm)

Linear Detector

RF Coupler

4-Ohm AF Dummy Load (3 was)

1/4-inch 3-contant Plug
Alignment Preparation & Precautions
A 50-ohm RF Dummy load and in-line wameter
must be connected to the “ANT 1” jack in all proce-
dures that call for transmission, except where spec-
ified otherwise. Correct alignment is not possible
with an antenna.
Aer completing one step, read the following step
to determine whether the same test equipment
will be required. If not, remove the unneeded test
equipment before proceeding. (except the dummy
load and wameter).
Correct alignment requires that the ambient tem-
perature be maintained constant between 68 °F ~ 86
°F (20 °C ~ 30 °C). When the transceiver is brought
into the shop from a hot or cold environment, it
should be allowed time to come to room tempera-
ture before alignment. Also, the test equipment
must be thoroughly warmed up before beginning.
Whenever possible, alignments should be made
with oscillator shields and circuit boards rmly af-
xed in place.
Note: Signal levels in dB referred to in this proce-
dure are based on 0 dBµ = 0.5 µV (closed cir-
cuit).
Important Notice
Do not adjust the alignment menus that are
not mentioned in this manual.

Yaesu FTDX3000 Specifications

General

Antenna Impedance	50 Ohms
Type	HF/50 MHz Transceiver
Supply Voltage	13.8 V DC ±15%
Antenna Connector	SO-239
IF DSP	Yes
Modes	AM, FM, RTTY
Receiver Type	Triple Conversion Superheterodyne
Display	4.3-inch TFT Full-Color