Unit UTS1000 Series User manual

Service Manual
UTS1000/3000 Series Spectrum Analyzers

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Preamble
Dear user:
Hello! Thank you for purchasing a brand-new Uni-Tech instrument. In order to use this instrument
correctly, please read the entire text of this user manual carefully before using this instrument, especially
the part about "Safety Precautions".
If you have read the entire text of this manual, it is recommended that you keep this manual in a safe
place, place it with the instrument, or put it in a place where you can refer to it at any time so that you can
refer to it in the future.
Copyright Information
UNI-T Uni-T Technology (China) Co., Ltd. All rights reserved.
UNI-T products are protected by patent rights in China or other countries, including patents that have
been obtained or are being applied for.
The company reserves the right to change product specifications and prices.
UNI-T reserves all rights. Licensed software products are owned by UNI-T and its subsidiaries or
providers, and are protected by national copyright laws and international treaties. Information in this
document supersedes that in all previously published sources.
UNI-T is a registered trademark of UNI-TREND TECHNOLOGY (CHINA) CO., LTD].
If the original purchaser sells or transfers the product to a third party within one year from the date of
purchase, the warranty period shall be from the date the original purchaser purchases the product from UNI-
T or an authorized UNI-T distributor Accessories and fuses etc. are not covered by this guarantee within one
year from the date of the warranty.
If the product proves to be defective within the applicable warranty period, UNI-T may, at its sole
discretion, either repair the defective product without charge for parts and labor, or replace the defective
product with an equivalent product (at UNI-T’s discretion), UNI - The components, modules and replacement
products used by T for warranty purposes may be brand new, or have been repaired to have the performance
equivalent to new products, and all replaced components, modules and products will become the property
of UNI-T.
References below to "Customer" mean the person or entity claiming the rights under this Warranty. In
order to obtain the service promised by this guarantee, the "customer" must notify UNI-T of the defect within
the applicable warranty period, and make appropriate arrangements for the performance of the service, and
the customer shall be responsible for packing and shipping the defective product to UNI-T's designated
repair center, prepay the freight and provide a copy of the original purchaser’s proof of purchase if the
product is to be shipped to a location within the country where the UNI-T repair center is located, UNI-T shall
pay for the return of the product to the customer, if the product is delivered Returns to any other location are
the customer's responsibility to pay all shipping charges, duties, taxes and any other charges.
This warranty does not apply to any defect, failure, or damage caused by accident, normal wear and tear
of machine parts, use outside or improper use of the product, or improper or insufficient maintenance. UNI-
T has no obligation to provide the following services according to the provisions of this guarantee:
a) Repair damage caused by installation, repair, or maintenance of the product by non-UNI-T service
representatives;
b) Repair of damage caused by misuse or connection with incompatible equipment;
c) Repair any damage or malfunction caused by using power supply not provided by UNI-T;
d) Repair of products that have been altered or integrated with other products if such alterations or
integration would increase the time or difficulty of product repairs.
This warranty is made by UNI-T for this product and is used to replace any other express or implied
warranties. UNI-T and its distributors refuse to make any implied warranties of merchantability or fitness for
a particular purpose. In the event of a breach of this warranty, UNI-T is responsible for repairing or replacing
defective products as the sole and exclusive remedy provided to the customer, regardless of whether UNI-T
and its distributors have been informed in advance of any indirect, special, incidental or consequential
damage, UNI-T and its dealers are not responsible for such damage.

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1. Overview
Safety Information
This section contains information and warnings that must be observed to keep the instrument operating
under appropriate safety conditions. In addition to the safety precautions indicated in this section, you must
follow generally accepted safety procedures.
Safety Precautions
Warning
To avoid possible electric shock and personal safety, follow these guidelines:
During all phases of operation, service, and repair of this instrument, the following general
safety precautions must be followed. Unilever will not bear any responsibility for the personal
safety and property loss caused by the user's failure to follow the following safety
precautions. This equipment is designed for professional users and responsible institutions
for measurement
purposes.
Do not use this equipment in any manner not specified by the manufacturer. Unless
otherwise specified in the product documentation, this equipment is for indoor use only.
Safety statement
Warning
A WARNING statement indicates a hazard. It alerts the user to a certain procedure,
method of operation, or similar situation. Personal injury or death could result if the rules
are not performed correctly or followed. Do not proceed to the next step until the
conditions of the indicated WARNING notice are fully understood and met.
Caution
The "Caution" symbol indicates a hazard. It alerts the user to a certain procedure, method
of operation, or similar situation. Failure to perform or follow the rules correctly may result
in damage to the product or loss of important data. Do not proceed to the next step until
the indicated CAUTION conditions are fully understood and met.
Notice
A CAUTION statement indicates important information. Prompting the user's attention to
a procedure, practice, condition, etc., should be prominently displayed.
Safety Signs
Danger
Indicates a warning of a possible electric shock hazard that could result in
personal injury or death.
Warning
Indicates a point requiring caution, which may result in personal injury or
damage to the instrument.
Caution
Indicates a potentially hazardous condition that requires following a
procedure or condition that may damage the instrument or other
equipment; if a "Caution" sign is indicated, all conditions must be met
before continuing to operate.
Notice
Indicates a potential problem, a procedure, or a condition that needs to be
followed, which may cause the instrument to function improperly; if the
"Caution" mark is marked, all conditions must be met to ensure that the
instrument can function normally.
Alternating
current
Instrument AC, please confirm the regional voltage range.

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Direct current
Instrument direct current, please confirm the regional voltage range.
Grounding
Frame, chassis ground terminal.
Grounding
Protective earth terminal.
Grounding
Measure the ground terminal.
OFF
The main power is off.
ON
The main power is turned on.
Power supply
Standby power, when the power switch is turned off, the instrument is not
completely disconnected from the AC power source.
CAT I
A secondary electrical circuit connected to a wall socket through a
transformer or similar device, such as electronic equipment. Electronic
equipment with protective measures, any high-voltage and low-voltage
circuits, such as copiers inside the office, etc.
CAT II
CATII: The primary electrical circuit of electrical equipment connected to
the indoor socket through the power cord, such as mobile tools, home
appliances, etc. Household appliances, portable tools (electric drills, etc.),
household sockets, and sockets that are more than 10 meters away from
Category III lines or 20 meters away from Category IV lines.
CAT III
Primary circuits of large equipment directly connected to the distribution
panel and circuit connections between the distribution panel and socket
outlets (three-phase distribution circuits including individual commercial
lighting circuits). Equipment with fixed positions, such as multi-phase
motors, multi-phase gate boxes; lighting equipment and lines inside large
buildings; machine tools and power distribution panels at industrial sites
(workshops), etc.
CAT IV
Three-phase public power supply equipment and outdoor power supply
line equipment. Equipment designed for "primary connection", such as the
power distribution system of the power station; power meters, front-end
over-set protection, and any outdoor transmission lines.
CE Certified
The CE mark is a registered trademark of the European Union.
UKCA certified
The UKCA logo is a registered trade mark in the United Kingdom.
UL certified
Meets UL STD 61010-1, 61010-2-030, Meets CSA STD C22.2 No. 61010-1 and
61010-2-030.
Abandoned
Do not place the device and its accessories in the trash. Items must be
disposed of properly in accordance with local regulations.

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Safety requirements
Warning
Prepare before
use
Please use the supplied power cord to connect this device to an AC power source;
The AC input voltage of the line complies with the rated value of this device; the
specific rated value is detailed in this product manual.
The line voltage switch of this equipment matches the line voltage;
The line voltage of the line fuse of this equipment is correct;
Do not use it for measuring main circuits.
View All Terminal
Ratings
In order to avoid fire and the impact of excessive current, please check all the ratings
and marking instructions on the product, and please refer to the product manual for
detailed information on ratings before connecting the product.
Use the power
cord correctly
Only use the instrument-specific power cord approved by the local country. Check
whether the insulation layer of the wire is damaged or whether the wire is exposed,
and check whether the test wire is connected. If the wire is damaged, please replace
it before using the instrument.
Instrument
grounding
To avoid electric shock, the grounding conductor must be connected to the ground.
This product is grounded through the grounding wire of the power supply. Before the
product is powered on, please be sure to ground the product.
AC power
requirement
Please use the specified AC power supply for this device. Please use the power cord
approved by the country where you are located and make sure that the insulation layer
is not damaged.
Anti-static
protection
Static electricity will cause damage to the instrument, and the test should be
performed in an anti-static area as much as possible. Before connecting the cable to
the instrument, briefly ground its inner and outer conductors to discharge static
electricity. The protection level of this equipment is 4kV for contactdischarge and 8kV
for air discharge.
Measurement
accessories
Measurement accessories are lower-category measurement accessories that are
definitely not suitable for mains measurements and are definitely not suitable for
measurements on CAT II, CAT III, or CAT IV circuits. Probe assemblies and accessories
within the scope of IEC 61010-031 and current sensors within the scope of IEC 61010-
2-032 shall meet its requirements.
Proper use of
device
input/output
ports
The input and output ports are provided by this device, please make sure to use the
input/output ports correctly. It is forbidden to load input signals on the output port of
this device, and it is forbidden to load signals that do not meet the rated value on the
input port of this device. Ensure that the probe or other connection accessories are
effectively grounded to avoid equipment damage or abnormal function. Please check
the user manual for the ratings of the input/output ports of this device.
Power fuse
Use a power fuse of the specified specification. If it is necessary to replace the fuse,
the maintenance personnel authorized by Unilever must replace the fuse that meets
the specified specifications of this product.
Disassemble and
clean
There are no operator-accessible parts inside. Do not remove the protective cover.
Maintenance must be performed by qualified personnel.
Environmental
friendly
Environmental protection uses a period mark, this symbol indicates that
within the indicated time, hazardous or toxic substances will not leak or be
damaged. The product’s environmental protection use period is 40 years.
During this period, it can be used with confidence. It should enter the
recycling system after the specified time.

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Working
environment
This device is intended for indoor use in a clean and dry environment with an ambient
temperature range of0 ℃～+40 ℃。
Do not operate the device in explosive, dusty or humid atmospheres.
Do not operate in
a wet
environment
Avoid the risk of short circuit or electric shock inside the instrument, and do not
operate the instrument in a humid environment.
Do not operate in
a flammable and
explosive
environment
To avoid instrument damage or personal injury, please do not operate the instrument
in a flammable and explosive environment.
Caution
Abnormal
situation
If you suspect that the product is malfunctioning, please contact the maintenance
personnel authorized by Unilever for testing;
The relevant person in charge of Unitech must carry out any maintenance,
adjustment, or parts replacement.
Cooling
requirements
Do not block the ventilation holes located on the sides and rear of the device;
Do not allow any foreign objects to enter the device through ventilation holes, etc.;
Ensure adequate ventilation, leaving at least 15 cm of clearance on the sides, front,
and rear of the unit.
Pay attention to
handling safety
In order to prevent the instrument from slipping during transportation and causing
damage to the buttons, knobs, orinterfaces on the panel of the instrument, please pay
attention to the safety of transportation.
Maintain proper
ventilation
Poor ventilation can cause the temperature of the instrument to rise, which can cause
damage to the instrument.
Keep well-ventilated when in use, and check the vents and fans regularly.
Please keep it
clean and dry
To avoid dust or moisture in the air from affecting the performance of the instrument,
please keep the surface of the product clean and dry.
Notice
Calibration
The recommended calibration cycle is one year. Calibration should only be
performed by suitably qualified personnel.
Environmental requirements
This instrument is suitable for the following environments:
●Indoor use
●Pollution Degree 2
●When operating: the altitude is lower than 3000 meters; when not operating: the altitude is lower than
15000 meters price
●Under the premise of no special instructions, the operating temperature is 0 to ﹢40 ℃; the storage
temperature is -20 to ﹢70 ℃
●Humidity operates as Below +35℃≤90% relative humidity, non-operating humidity is +35℃～+40℃
≤60% relative humidity
There are vents on the rear panel and side panels of the instrument, please keep the air circulation through
the vents of the instrument case. Do not place the analyzer side-by-side with any other instrument that
requires side-by-side ventilation. Make sure that the exhaust port of the first instrument is away from the air

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inlet of the second instrument. If the air heated by the first instrument flows to the second instrument, it may
cause the second instrument to operate too hot, or even malfunction. To prevent excessive dust from
clogging the vents, clean the instrument case regularly. But the case is not waterproof. When cleaning,
please cut off the power first, and wipe the case with a dry cloth or a slightly damp soft cloth.
Connect the power supply
voltage range
frequency
100-240VAC (fluctuation ±10%)
50/60Hz
100-120VAC (fluctuation ±10%)
400Hz
The specifications of the equipment that can input AC power are:
Please use the power cord provided in the accessories to connect to the power port.
Connecting the Power Cable
This instrument is a Class I safety product. The supplied power cord provides a good case ground. This
spectrum analyzer is equipped with a three-core power cord complying with international safety standards,
which can provide good shell grounding performance and is suitable for the regulations of the country or
region where it is located.
Please follow the steps below to install your AC power cord:
●Verify that the power cord is not damaged.
●When installing the instrument, please allow enough space for you to connect the power cord.
●Plug the supplied three-core power cord into a well-grounded power outlet.
Electrostatic Protection
Electrostatic discharge can cause damage to components, and electrostatic discharge may cause invisible
damage to components during transportation, storage, and use.
The following measures reduce electrostatic discharge damage that may occur during testing equipment:
●Testing should be performed in an anti-static area whenever possible;
●Before connecting the cable to the instrument, its inner and outer conductors should be grounded briefly
to discharge static electricity;
●Make sure all instruments are properly grounded to prevent buildup of electrostatic charges.
Check serial numbers and system information
UNI-T is constantly improving its product performance, usability, and reliability. UNI-T service personnel can
access the instrument serial number and system information.
The serial number is located on the rear cover serial label, or with the analyzer powered on, press System →
System Information. System information is useful for updates and post-market upgrades.

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2. Foreword
Supported Products
This manual covers servicing the following products:
UTS1015E、UTS1015B、UTS1015T、UTS1032B、UTS1032T；
UTS3021B、UTS3036B、UTS3084B、UTS3084T；
Check for specific product names in headers, titles, table or graph titles, or text at the top of the page.
Material without any specific product designation applies to all products in the brochure.
Where to find operational information
For information on instrument installation, operation, and networking, refer to the help or user manual that
came with your spectrum analyzer.
3. Structure introduction
Rear cover assembly
As shown below:
Parts List
Item
number
Parts name
Accessories Description
1
M4 inner torque screw
Use a T8 Torque screwdriver to remove 10 screws
2
Chassis rear cover assembly
3
M12 nut
Open 3 nuts with S18 socket wrench
4
M3 inner torque screw
Use a T10 Torque screwdriver to remove 14 screws
5
Chassis rear cover assembly
6
front-end components

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Front panel components
As shown below:
Parts List:
Item
number
Parts name
Accessories description
1
M3 inner torque screw
Use a T10 Torque screwdriver to remove 9 screws
2
M3 inner torque screw
Use a T10 Torque screwdriver to remove 41 screws
3
Cable
Use an SMA torque wrench to set the value at 1.0N.m
4
Front cavity of radio
frequency board
5
RF PCBA board
6
RF board rear cavity
7
M3 inner torque screw
Use a T10 Torque screwdriver to remove the 3 screws
8
M3 inner torque screw
Use a T10 Torque screwdriver to remove 5 screws
9
M3 inner torque screw
Use a T10 Torque screwdriver to remove 5 screws
10
Rear cavity of IF board
11
IF PCBA board
12
Front cavity of IF panel

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Front Panel and Display
As shown below:
Parts List
Item number
Parts name
Accessories description
1
Knob cap
2
M3 inner torque screw
Use a T10 Torque screwdriver to remove 9 screws
3
Surface shell
4
M3 inner torque screw
Use a T10 Torque screwdriver to remove 5 screws
5
LCD screen assembly
6
screen bracket
7
M3 inner torque screw
Use a T10 Torque screwdriver to remove the 4 screws
8
Screen adapter board
9
Silicone key set
10
M3 inner torque screw
Use a T10 Torque screwdriver to remove the 8 screws
11
Button board PCBA

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4. Maintenance
This section contains information needed to perform periodic and corrective maintenance on the
instrument.
Pre-discharge electrostatic discharge
Before servicing this product, read the General Safety Summary and Service Safety Summary at the front of
the manual, as well as the following ESD information.
Notice: Electrostatic discharge (ESD) can damage any semiconductor components in this instrument
When performing any service that requires internal access to the instrument, observe the following
precautions to avoid affecting internal modules and their components due to electrostatic discharge:
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive modules in their static-protective containers or on metal rails. Label
any packages that contain electrostatic sensitive boards.
3. When handling these modules, discharge static voltage from your body by wearing a grounded antistatic
wrist strap.
4. Servicing static-sensitive modules only at a static-free workstation.
5. Keep away anything that can create or maintain a static charge on workstation surfaces.
6. Handle the board by the edges as much as possible.
7. Do not slide the circuit board on any surface.
Avoid handling circuit boards in areas where floor or work surface coverings can generate static charges.
Check and clean
Inspection and Cleaning Describes how to inspect for dirt and damage. It also describes how to clean the
exterior or interior of the instrument. Inspection and cleaning are performed as preventive maintenance.
Regular preventive maintenance can prevent instrument failure and increase its reliability.
Preventive maintenance includes visual inspection and cleaning of the instrument, and maintaining general
care while operating the instrument.
The frequency with which maintenance is performed depends on the severity of the environment in which
the instrument is used. The proper time to perform preventive maintenance is before instrument tuning.
External cleaning
Clean the exterior of the case with a dry, lint-free clothor a soft-bristled brush. If any dirt remains, use a cloth
or cotton swab dampened with a 75% isopropyl alcohol solution. Use a cotton swab to clean up the space
around the controls and connectors. Do not useabrasives onany part of the case that could damage the case.
Clean the On/Standby switch with a clean towel dampened with deionized water. Do not spray or wet the
switch itself.
Notice:
Avoid using chemical cleaners, which may damage the plastics used in this instrument.
Use only deionized water when cleaning the front panel buttons. Use a 75% isopropyl alcohol solution as a
cleaner for cabinet parts. Please consult your Uni-Tech service center or representative before using other
types of cleaners.
Check - Appearance. Inspect the exterior of the instrument fordamage, wear, and missing parts. Immediately
repair defects that could result in personal injury or further use of the instrument.

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External Checklist
Items
Examination
Repair operation
Enclosures, Front Panels and
Covers
Cracks, scratches, deformation, hardware
damage
Repair or replace defective modules
Front panel knob
Missing, damaged, or loose knobs
Repair or replace missing or
defective knobs
connect
Cracked housing, cracked insulation and
deformed contacts. dirt in the connector
Repair or replace defective
modules. Clean or brush off dirt
Handles and Supporting Feet
correct operation
Repair or replace defective modules
Accessories
Missing items or parts, bent pins, broken
or frayed cables, and damaged connectors
Repair or replace damaged or
missing items, frayed cables and
defective modules
Display cleaning
Clean the display surface by gently wiping the display with a clean-room wipe or non-abrasive cleaning cloth.
If the display is very dirty, dampen a cloth with distilled water, a 75% isopropyl alcohol solution, or a standard
glass cleaner, and then gently wipe the display surface. Use only enough liquid to dampen the cloth or wipe.
Avoid excessive force, which may damage the display surface.
Notice: Incorrect cleaning agents or methods may damage the display.
•Do not use abrasive cleaners or surface cleaners to clean the monitor.
•Do not spray liquid directly on the monitor surface.
•Do not scrub the monitor with excessive force.
Notice: To prevent moisture from getting inside the instrument during exterior cleaning, do not
spray any cleaning solutions directly onto the screen or the instrument.
Return the instrument for repair
When repacking the instrument for shipment, use the original packaging. If the packaging is not available or
suitable for use, please contact your local Uni-Tech representative to obtain a new packaging.
Seal shipping cartons with industrial staplers or strapping.
If the instrument is shipped to the Uni-Tech service center, please attach the following information:
•Owner's address.
•The contact's name and phone number.
•The type and serial number of the instrument.
•The reason for the return.
•A full description of the services required.
Mark the address of the Unilever service center and the return address on the shipping box in two
prominent places.

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5. Disassembling
Removal tool
Use the following tools to remove or replace modules in the spectrum analyzer.
Item Number
Tool name
Description
1
Torque screwdriver
Model see disassembly steps
2
Torque wrench
Used to disconnect RF connectors or ports
3
Upholstered
Prevents damage to the screen and knobs when removing the
grid
4
Anti-static
environment
To prevent damage to devices caused by static electricity,
wear properly grounded anti-static clothing, wrist straps and
foot straps; effective anti-static mats
Remove the dust cover
The following procedure describes the removal and replacement of the rear cover.
prerequisites:
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
Steps:
1. Use a T8 Torque screwdriver to remove the 4 screws that fix the dust cover and the rear cover of the rear
cover assembly, as shown in the figure below:
2. Remove the dust-proof net, as shown in the figure below, and then clean the dust-proof net.

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3. For cleaning methods, see the "Maintenance" chapter.
Note: When the front panel is placed downward, it is necessary to avoid the knob cap to avoid
damage to the knob.
Removing the rear cover
The following procedure describes the removal and replacement of the rear cover.
prerequisites:
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
Steps:
1、Remove all cables and power cords from the rear panel;
2、Place the cushion flat on the electrostatic table;
3、Place the instrument face down on a cushion to prevent damage to the screen and knobs;
4、Pull up the handle, and use a T8 Torque screwdriver to remove the 2 screws on the case back cover
assembly, as shown in the figure below:
5、Use a T8 torque screwdriver to remove the 8 screws on the case back cover assembly. As shown below:
6、Carefully lift up the rear cover
7、To reinstall, reverse the above steps.

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Removing the rear cover assembly
The following procedure describes the removal and replacement of the rear cover assembly.
prerequisites:
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
Steps:
1. Use a T10 Torx screwdriver to remove the 10 upper and lower screws, as shown in the figure below:
2. Use a T10 Torque screwdriver to remove the 4 screws on the left and right sides, as shown in the figure
below:
2. Place the device face down on the cushion, carefully lift up the rear cover assembly, and remove the
connecting wire connecting the front cover assembly and the rear cover assembly, as shown in the
figure below:

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4. To reinstall, perform the above steps in reverse.
Removing the power module
The following procedure describes the removal and replacement of the rear cover assembly.
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
•Remove the rear cover assembly.
Steps:
1. Use a T10 Torque screwdriver to remove the 4 screws fixing the shielding cover, as shown in the figure
below:
2. Remove the power cord and fan wire, and then use a T10 Torque screwdriver to remove the 4 screws that
fix the shield, as shown in the figure below, and finally remove the power module;
3. To reinstall, perform the above steps in reverse.
Remove the fan
The following procedures describe fan removal and replacement.
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
•Remove the rear cover assembly.

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•Remove the shield.
Steps:
1. Disconnect the fan wire from the power board, as shown in the figure below:
2. Use a T10 Torque screwdriver to remove the screws that fix the fan on the rear cover assembly, as
shown in the figure below:
3.To reinstall, reverse the above steps。
Removing the RF Board
The following procedure describes the removal and replacement of the RF board.
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
Steps:
1、Pull up the two cables connecting the RF board to the IF board, and remove the FPC cable, as shown in
the figure below:

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2、Use a torque wrench to remove the SMA screws, as shown in the figure below:
3、Use a T10 Torque screwdriver to remove the 9 screws securing the cavity of the front cover assembly,
as shown in the figure below:
4、Take out the cavity, and use a T10 Torque screwdriver to remove all the screws fixing the RF board in
the cavity, as shown in the figure below:

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5. To reinstall, perform the above steps in reverse。
Removing the Digital IF Board
The following procedure describes the removal and replacement of the digital IF board.
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
Steps:
1. Pull out the two connecting cables connected to the RF board upwards, and remove the three FPC cables
and the external cables, as shown in the figure below:
2. Use a T10 Torque screwdriver to remove the 13 screws that fix the digital IF board on the front cover
assembly, as shown in the figure below:

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3. After removing the screws, you can take out the digital IF board;
4. To reinstall, perform the above steps in reverse.
Disassemble the cover
The following procedure describes the removal and replacement of the face-plate.
•To prevent electrostatic damage to components, wear a properly grounded antistatic wrist and foot
strap during installation, and use an antistatic mat in a tested antistatic environment.
•Remove the rear cover.
•Remove the RF board
•Removing the digital IF board
Steps:
1、Remove the knob cap on the front panel, as shown in the figure below:
2、Use a T10 Torque screwdriver to remove the 9 screws fixing the front cover assembly, as shown in the
figure below: