Sharp Pnu423 Manual

							
PN-U553
PN-U473
PN-U423
LCD MONITOR
OPERATION MANUAL 
						

							
IMPORTANT:
To aid reporting in case of loss or theft, please record the 
product’s model and serial numbers in the space provided. 
The numbers are located in the rear of the product.

Model No.:
Serial No.:U.S.A. ONLY 
						

							
3E

IMPORTANT INFORMATION
WARNING:  TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT 
TO RAIN OR MOISTURE.

RISK OF ELECTRIC 
SHOCK
DO NOT OPEN

CAUTION
CAUTION:    TO REDUCE THE RISK OF ELECTRIC 
SHOCK, DO NOT REMOVE COVER. 
NO USER-SERVICEABLE PARTS 
INSIDE. 
REFER SERVICING TO QUALIFIED 
SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, within 
a triangle, is intended to alert the user to the 
presence of uninsulated “dangerous voltage” 
within the product’s enclosure that may be of 
sufficient magnitude to constitute a risk of electric 
shock to persons.
The exclamation point within a triangle is 
intended to alert the user to the presence of 
important operating and maintenance (servicing) 
instructions in the literature accompanying the 
product.

WARNING: 
FCC Regulations state that any unauthorized changes or modifications to this equipment not expressly approved by the 
manufacturer could void the user’s authority to operate this equipment.
NOTE:This equipment has been tested and found to comply with the limits for Class  A digital device, pursuant to Part 15 of the 
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment 
is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if 
not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. 
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required 
to correct the interference at his own expense.

U.S.A. ONLY 
						

							
4E

Thank you for your purchase of a SHARP LCD product. To ensure safety and many years of trouble-free operation of your 
product, please read the Safety Precautions carefully before using this product.
SAFETY PRECAUTIONS
Electricity is used to perform many useful functions, but it can also cause personal injuries and property damage if improperly 
handled. This product has been engineered and manufactured with the highest priority on safety. However, improper use can 
result in electric shock and/or fire. In order to prevent potential danger, please observe the following instructions when installing, 
operating and cleaning the product. To ensure your safety and prolong the service life of your LCD product, please read the 
following precautions carefully before using the product.
 
1.   Read instructions — All operating instructions must be read and understood before the product is operated.
 
2.     Keep this manual in a safe place — These safety and operating instructions must be kept in a safe place for future 
reference.
 
3.   Observe warnings — All warnings on the product and in the instructions must be observed closely.
 
4.   Follow instructions — All operating instructions must be followed.
 
5.     Cleaning — Unplug the power cord from the AC outlet before cleaning the product. Use a dry cloth to clean the product. Do 
not use liquid cleaners or aerosol cleaners.
 
6.     Attachments — Do not use attachments not recommended by the manufacturer . Use of inadequate attachments can result 
in accidents.
  7.     Water and moisture — Do not use the product near water. Do not install the product in a place where water may splash onto 
it. Be careful of equipment which drains water such as an air-conditioner .
 
8.   Ventilation — The vents and other openings in the cabinet are designed for ventilation.
     
Do not cover or block these vents and openings since insufficient ventilation can cause overheating and/or shorten the life 
of the product. Do not place the product on a sofa, rug or other similar surface, since they can block ventilation openings. 
Do not place the product in an enclosed place such as a bookcase or rack, unless proper ventilation is provided or the 
manufacturer’s instructions are followed.
 
9.     Power cord protection — The power cords must be routed properly to prevent people from stepping on them or objects from 
resting on them.
 
10.
    The LCD panel used in this product is made of glass. Therefore, it can break when the product is dropped or applied with 
impact. Be careful not to be injured by broken glass pieces in case the LCD panel breaks.
 
11.
  Overloading — Do not overload AC outlets or extension cords. Overloading can cause fire or electric shock.
 
12.
    Entering of objects and liquids — Never insert an object into the product through vents or openings. High voltage flows in 
the product, and inserting an object can cause electric shock and/or short internal parts.
   
For the same reason, do not spill water or liquid on the product.
 
13.
    Servicing — Do not attempt to service the product yourself. Removing covers can expose you to high voltage and other 
dangerous conditions. Request a qualified service person to perform servicing.
 
14.
    Repair — If any of the following conditions occurs, unplug the power cord from the  AC outlet, and request a qualified service 
person to perform repairs.  
a.
  When the power cord or plug is damaged.  
b.
  When a liquid was spilled on the product or when objects have fallen into the product.  
c.
  When the product has been exposed to rain or water. 
d.
  When the product does not operate properly as described in the operating instructions.  
    Do not touch the controls other than those described in the operating instructions. Improper adjustment of controls 
not described in the instructions can cause damage, which often requires extensive adjustment work by a qualified 
technician.
    e.   When the product has been dropped or damaged.  
    f.     When the product displays an abnormal condition. Any noticeable abnormality in the product indicates that the product 
needs servicing.
15.
    Replacement parts — In case the product needs replacement parts, make sure that the service person uses replacement 
parts specified by the manufacturer, or those with the same characteristics and performance as the original parts. Use of 
unauthorized parts can result in fire, electric shock and/or other danger .
 
16.     Safety checks — Upon completion of service or repair work, request the service technician to perform safety checks to 
ensure that the product is in proper operating condition.
 
17.     Wall mounting — When mounting the product on a wall, be sure to install the product according to the method 
recommended by the manufacturer.
 
18.     Heat sources — Keep the product away from heat sources such as radiators, heaters, stoves and other heat-generating 
products (including amplifiers).

DEAR SHARP CUSTOMER 
						

							
5E

SAFETY PRECAUTIONS (Continued)
 19.    Batteries — Incorrect use of batteries may cause the batteries to burst or ignite.  A leaky battery may corrode the equipment, 
dirty your hands or spoil your clothing. In order to avoid these problems, make sure to observe the precautions below:
    • Use the specified batteries only.
    •   Install the batteries with due attention to the plus (+) and minus (-) sides of the batteries according to the instructions in the 
compartment.
    • Do not mix old and new batteries.
    • Do not mix batteries of different types. Voltage specifications of batteries of the same shape may vary.
    • Replace an exhausted battery with a new one promptly.
    • If you will not use the remote control for a long time, remove the batteries.
    •   If leaked battery fluid gets on your skin or clothing, rinse immediately and thoroughly . If it gets into your eye, bathe your 
eye well rather than rubbing and seek medical treatment immediately . Leaked battery fluid that gets into your eye or your 
clothing may cause a skin irritation or damage your eye.
 
20.     Usage of the monitor must not be accompanied by fatal risks or dangers that, could lead directly to death, personal injury , 
severe physical damage or other loss, including nuclear reaction control in nuclear facility , medical life support system, and 
missile launch control in a weapon system.
 
21.     Do not stay in contact with the parts of the product that become hot for long periods of time. Doing so may result in   
low-temperature burns.

WARNING:
This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may 
be required to take adequate measures.

To maintain compliance with EMC regulations, use shielded cables to connect to the following terminals: DVI-D input/output 
terminals, HDMI input terminal, D-sub input terminal, RS-232C input/output terminals, and DisplayPort input terminal.

If a monitor is not positioned in a sufficiently stable location, it can be potentially hazardous due to falling. Many injuries, 
particularly to children, can be avoided by taking simple precautions such as:
• Using fixing devices like wall mount brackets recommended by the manufacturer .
• Only using furniture that can safely support the monitor.
• Ensuring the monitor is not overhanging the edge of the supporting furniture.
• 
 Not placing the monitor on tall furniture (for example, cupboards or bookcases) without anchoring both the furniture and the 
monitor to a suitable support.
• Not standing the monitors on cloth or other materials placed between the monitor and supporting furniture.
• Educating children about the dangers of climbing on furniture to reach the monitor or its controls. 

Especially for child safety
- Don’t allow children to climb on or play with the monitor.
- Don’t place the monitor on furniture that can easily be used as steps, such as a chest of drawers.
- 
 Remember that children can become excited while watching a program, especially on a “larger than life” monitor . Care 
should be taken to place or install the monitor where it cannot be pushed, pulled over , or knocked down.
- 
 Care should be taken to route all cords and cables connected to the monitor so that they cannot be pulled or grabbed by 
curious children. 
						

							
6E

-  The TFT color LCD panel used in this monitor is made with 
the application of high precision technology. However, there 
may be minute points on the screen where pixels never light 
or are permanently lit. Also, if the screen is viewed from 
an acute angle there may be uneven colors or brightness. 
Please note that these are not malfunctions but common 
phenomena of LCDs and will not affect the performance of 
the monitor.
- 
 Do not display a still picture for a long period, as this could 
cause a residual image.
- Never rub or tap the monitor with hard objects.
- 
 Please understand that SHARP CORPORATION bears no 
responsibility for errors made during use by the customer or 
a third party, nor for any other malfunctions or damage to this 
product arising during use, except where indemnity liability is 
recognized under law.
- 
 This monitor and its accessories may be upgraded without 
advance notice.
- 
 Do not use the monitor where there is a lot of dust, where 
humidity is high, or where the monitor may come into contact 
with oil or steam. Do not use in an environment where 
there are corrosive gases (sulfur dioxide, hydrogen sulfide, 
nitrogen dioxide, chlorine, ammonia, ozone, etc.). As this 
could lead to fire.
- 
 Ensure that the monitor does not come into contact with 
water or other fluids. Ensure that no objects such as paper 
clips or pins enter the monitor as this could lead to fire or 
electric shock.
- 
 Do not place the monitor on top of unstable objects or in 
unsafe places. Do not allow the monitor to receive strong 
shocks or to strongly vibrate. Causing the monitor to fall or 
topple over may damage it.
- 
 Do not use the monitor near heating equipment or in places 
where there is likelihood of high temperature, as this may 
lead to generation of excessive heat and outbreak of fire.
- 
 Do not use the monitor in places where it may be exposed to 
direct sunlight.
- 
 Please be sure to constantly remove dust and garbage that 
has attached to the ventilation opening. If dust collects in the 
ventilation opening or the inside of the monitor, it may lead to 
excessive heat, outbreak of fire, or malfunction.  
Please request a cleaning of the inside of the monitor from 
an authorized SHARP servicing dealer or service center.
- 
 Images cannot be rotated on this monitor. 
When using in portrait orientation, you will need to prepare 
appropriately orientated content in advance.
- 
 The AC outlet shall be installed near the equipment and shall 
be easily accessible.The Power Cord
- Use only the power cord supplied with the monitor.
-   Do not damage the power cord nor place heavy objects on 
it, stretch it or over bend it. Also, do not add extension cords. 
Damage to the cord may result in fire or electric shock.
- 
 Do not use the power cord with a power tap.  
Adding an extension cord may lead to fire as a result of 
overheating.
- 
 Do not remove or insert the power plug with wet hands. 
Doing so could result in electric shock.
- Unplug the power cord if it is not used for a long time.
- 
 Do not attempt to repair the power cord if it is broken 
or malfunctioning. Refer the servicing to the service 
representative.
Manual Scope
-  Microsoft, Windows and Internet Explorer are registered 
trademarks of Microsoft Corporation.
- 
 The terms HDMI and HDMI High-Definition Multimedia 
Interface, and the HDMI Logo are trademarks or registered 
trademarks of HDMI Licensing LLC in the United States and 
other countries.
- 
 DisplayPort is a registered trademark of Video Electronics 
Standards Association.
- 
 Adobe, Acrobat, and Reader are either registered trademarks 
or trademarks of Adobe Systems Incorporated in the United 
States and/or other countries.
- 
 This product comes with RICOH Bitmap Fonts produced and 
sold by RICOH COMPANY, LTD.
- 
 All other brand and product names are trademarks or 
registered trademarks of their respective holders.
- 
 Language of OSD menu used in this manual is English by 
way of example.
- 
 Illustrations in this manual may not exactly represent the 
actual product or display.
- 
 This manual assumes use in landscape orientation, except 
where specifically noted.
LED Backlight
●   The LED backlight in this product has a limited lifetime.
 
*   If the screen gets dark or does not turn on, it may be 
necessary to replace the LED backlight. 
 
*   This LED backlight is exclusive to this product and must 
be replaced by an authorized SHARP servicing dealer 
or service center. Please contact an authorized SHARP 
servicing dealer or service center for assistance.

TIPS AND SAFETY INSTRUCTIONS 
						

							
7E

MOUNTING PRECAUTIONS
•  This product is for use indoors.
•   A mounting bracket compliant with VESA specifications is 
required.
•
  Since the monitor is heavy, consult your dealer before 
installing, removing or moving the monitor.
•
  Do not hold the monitor by the speakers.
•
  Mounting the monitor on the wall requires special expertise 
and the work must be performed by an authorized SHARP 
dealer. You should never attempt to perform any of this 
work yourself. Our company will bear no responsibility 
for accidents or injuries caused by improper mounting or 
mishandling.
•
  Use the monitor with the surface perpendicular to a level 
surface. If necessary, the monitor may be tilted up to 20 
degrees upward or downward. 
•
  This monitor should be used at an ambient temperature 
between 41°F (5°C) and 104°F (40°C).
 
(32°F (0°C) and 104°F (40°C) for the PN-U473/PN-U423)
Provide enough space around the monitor to prevent heat 
from accumulating inside.

Unit: inch [mm]
For the monitor in portrait orientation
7-7/8 [200] 2
[50]2[50]
2 [50]
2
[50]
2 [50]
Power LED
For the monitor in landscape orientation
Unit: inch [mm]
5/16 [7]
5/16 [7]
7-7/8 [200]
2
[50]

•  If it is difficult to provide sufficient space for any reason 
such as the installation of the monitor inside a housing, or 
if the ambient temperature may be outside of the range 
of 41°F (5°C) to 104°F (40°C), install a fan or take other 
measures to keep the ambient temperature within the 
required range.  
(32°F (0°C) and 104°F (40°C) for the PN-U473/PN-U423)
•
  Temperature condition may change when using the monitor 
together with the optional equipments recommended by 
SHARP. In such cases, please check the temperature 
condition specified by the optional equipments.
•
  Do not block any ventilation openings. If the temperature 
inside the monitor rises, this could lead to a malfunction.
•
  Do not place the monitor on a device which generates heat. •
  Adhere to the following when installing the monitor in its 
portrait orientation. Failing to adhere to the following may 
cause malfunctions. 
- 
 Install the monitor such that the power LED is located on 
the bottom side.
- Set the MONITOR on the MONITOR menu to PORTRAIT. (See page 24.)
-   Be sure to clamp the power cord (supplied) onto the cable 
clamp attachment using the supplied cable clamp. When 
clamping the power cord, take care not to stress the 
terminal of the power cord. Do not bend the power cord 
excessively.

Cable clamp
Power cord (Supplied)
Cable clamp 
attachment

•
  Use the supplied vertical sticker when you install the 
monitor in portrait orientation.

Vertical sticker 
(Operation panel)
Ve
rtical sticker 
(Logo)

Do not remove the factory-affixed sticker but affix the 
sticker over it. Be careful not to cover the remote control 
sensor or buttons. 
						

							
8E

Supplied Components
If any component should be missing, please contact your dealer.
 Liquid Crystal Display Monitor: 1
  Remote control unit: 1
  Cable clamp: 2
  Power cord: 1
  R-6 battery (“AA” size): 2
  CD-ROM (Utility Disk for Windows): 1
  Setup Manual: 1
  Vertical sticker (Logo): 1
  Vertical sticker (Operation panel): 1
  Model Name / Serial No. label: 1
 
Indicates the model name and serial number.
  
 Cover SHARP logo: 1 
Place this sticker onto the SHARP logo to cover the logo.
*
  SHARP Corporation holds authorship rights to the Utility Disk program. Do not reproduce it without permission.
*
  For environmental protection!
 
Do not dispose of batteries in household waste. Follow the disposal instructions for your area.
Contents
IMPORTANT INFORMATION   ............................................3
DEAR SHARP CUSTOMER   .............................................. 4
SAFETY PRECAUTIONS
 .................................................. 4
TIPS AND SAFETY INSTRUCTIONS
  ...............................6
MOUNTING PRECAUTIONS
  ............................................7
Supplied Components
  ..................................................... 8
Part Names
  ....................................................................... 9
Connecting Peripheral Equipment
  ...............................11
Connecting the Power Cord
  .........................................13
Binding Cables
  ............................................................... 14
Preparing the Remote Control Unit
  ..............................15
Installing the batteries
  ................................................ 15
Remote control operation range
  .................................15
Turning Power On/Off
  .................................................... 16
Turning on the main power .........................................16
Turning power on/off
  .................................................. 16
Basic Operation
  ............................................................. 18
Menu Items
  ..................................................................... 20
Displaying the menu screen
  .......................................20
Menu item details
  ....................................................... 21
Adjustments for PC screen display
  ............................28Initialization (Reset)/Functional Restriction 
 
Setting (FUNCTION)   .......................................................29
Controlling the Monitor with a PC (RS-232C)
  ..............30
PC connection
  ............................................................30
Communication conditions
  .........................................30
Communication procedure
  .........................................30
RS-232C command table
  ...........................................34
Controlling the Monitor with a PC (LAN)
  .....................39
Settings to connect to a LAN
  ......................................39
Controlling with a PC
  ..................................................41
“Advanced operation” Command-based control
  ........44
Troubleshooting
  .............................................................45
Specifications 
  ...............................................................47
Mounting Precautions   
(For SHARP dealers and service engineers)
  ...............53 
						

							
9E

nFront view

6
7
4
5
8
82 4
10
11 12 1314 15 16 171819 2021
9 22
23
23
4
5
*
1
Guideline

Part Names
n
Rear view

Caution

•
  Consult your SHARP dealer for attachment/detachment of optional parts.
•   When lifting or moving the monitor, do not hold by the speakers.
  1.   LCD panel
  2.   Power LED (See page 16.)
  3.   Remote control sensor (See page 15.
)
  4.   Input switch 
(See page 18. )
  5.   Power switch 
(See page 16.)
*   The Input switch and Power switch are located on the back 
of the monitor. Use the position of the slot on the front as a 
guideline for operation of the switches. 
 
(The switch with the protrusion is the Power switch.)   6.   Optional attachment section
This section is used to connect optional hardware for 
function expansion. Offering this attachment location 
is not a guarantee that future compatible hardware 
attachments will be released.
  7.   Vents
  8.   Speakers
  9.   AC input terminal 
(See page 13.)  10.   Main power switch 
(See page 16.)  11.   RS-232C output terminal (See page 12.)
 12.   RS-232C input terminal (See page 12.)
 13.   LAN terminal (See page 12.)
 14.   HDMI input terminal 
(See page 11.)  15.   DisplayPort input terminal 
(See page 11.)  16.   DVI-D input terminal 
(See page 11.)  17.   DVI-D output terminal 
(See page 12.)  18.   D-sub input terminal 
(See page 11.)  19.   Audio1 input terminal 
(See page 12.)  20.   Component input terminals 
(See page 11.)  21.   Video input terminal 
(See page 11.)  22.   Audio output terminals 
(See page 12.)  23.   Audio2 input terminals 
(See page 12.)  24.   Anti-theft hole 
(

)
A commercially available anti-theft lock can be connected. 
The anti-theft hole is compatible with the Kensington 
MicroSaver Security System. 
						

							
10E

Part Names
n Remote control unit

1
2
3
4
5
6 118 7
9
10
  1.   Signal transmitter
 
2.   POWER button  (See page 16.)
  3.   MUTE button  (See page 18.)
  4.   VOL +/- buttons  (See page 18.)
   BRIGHT +/- buttons  (See page 18.)
   Cursor control (

 / 
 / 
 / 
) buttons
 
5.
 
DISPLAY button  (See page 18.)
 
6.
 
MODE button  (See page 18.)
 
7.
 
INPUT button  (See page 18.)
 
8.
 
MENU button  (See page 18.)
 
9.
 
ENTER button  (See page 18.)
 
10.
 
RETURN button (See page 18.)
 
11.
 
SIZE button  (See page 18.)