HP P21b G4 Скачать руководство пользователя страница 5

 

 

If you must replace a capacitor, insert new parts carefully to avoid a short circuit caused by the 
near pin. 

 

Do not get the board wet. Water and moisture can cause a short circuit that causes 
malfunctions. 

 

To avoid damage, be sure to use lead-free solder. 

 

When soldering, work quickly to avoid overheating the circuit board. 

 

Keep the soldering iron tip clean and well tinned when replacing parts. 

 

After repair, perform a close inspection of the circuit board to confirm it is in good condition. 

 

After repair, perform a function test to confirm the power supply is working properly. 

ERP Lot5 requirement 

1. A professional repairer must have the technical competence to repair electronic displays and 
comply with the applicable regulations for repairers of electrical equipment in the Member States 
where the repairer operates. Reference to an official registration system as professional repairer, 
where such a system exists in the Member States, shall be accepted as proof of compliance. 

2. A professional repairer must have insurance that covers liabilities resulting from repairs, 
regardless of whether required by the Member State. 

RoHS (2002/95/EC) requirements 

Applied to all countries that require RoHS.

 

 

The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a 
legal requirement by the EU (European Union) for the global electronics industry sold in the EU and 
other countries. Any electrical and electronics products launched in the market after June 2006 should 
meet this RoHS requirement. Products launched in the market before June 2006 are not required to be 
compliant with RoHS parts. If the original parts are not RoHS complaint, the replacement parts can be 
non-ROHS complaint. If the original parts are RoHS compliant, the replacement parts MUST be RoHS 
complaint. 

If product service or maintenance requires replacing parts, confirm the RoHS requirement before 
replacement. 

General descriptions 

This manual contains general information. There are two levels of service: 

Level 1: Cosmetic/appearance/alignment service 

Level 2: Circuit board or standard parts replacement 

Firmware updates 

Firmware updates for the monitor are available at 

support.hp.com

. If no firmware is posted, the monitor 

does not need a firmware update. 

Before returning the repaired product to the customer 

Perform an AC leakage current check on exposed metallic parts to be sure the product is safe to 
operate without the potential of electrical shock. Do not use a line isolation transformer during this 
check. 

Measurements that are not within specified limits present a possible shock hazard. You must check and 
repair the product before returning it to the customer. 

Содержание P21b G4

Страница 1: ...Maintenance and Service Guide P21b G4 model SUMMARY This guide provides information about spare parts removal and replacement of parts diagnostic tests problem troubleshooting and more ...

Страница 2: ... States and other countries The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein Firs...

Страница 3: ...Firmware updates 2 Before returning the repaired product to the customer 2 2 Monitor features 3 Features 3 Front components 4 Rear components 5 Locating the serial number and product number 6 3 Illustrated parts catalog 8 How to order parts 9 4 Removal and replacement procedures 10 Preparation for disassembly 10 RC 10 Function test 19 Support and troubleshooting 19 Index 21 ...

Страница 4: ...pening the product s cabinet Modules containing electrical components are sensitive to electrostatic discharge ESD Follow ESD safety procedures while handling these parts Some products contain more than one battery Do not disassemble or expose a battery to high temperatures such as throwing into fire or the battery may explode Refer to government requirements for battery recycling or disposal This...

Страница 5: ...tance in Electrical and Electronic Equipment Directive is a legal requirement by the EU European Union for the global electronics industry sold in the EU and other countries Any electrical and electronics products launched in the market after June 2006 should meet this RoHS requirement Products launched in the market before June 2006 are not required to be compliant with RoHS parts If the original...

Страница 6: ...itor head mounting solutions High Definition Multimedia Interface HDMI video input Select Models Audio in jack Select Models Plug and play capability if supported by your operating system Security cable slot provision on rear of monitor for optional security cable On Screen Display OSD adjustments in several languages for easy setup and screen optimization High Bandwidth Digital Content Protection...

Страница 7: ...4 Front components To identify the components on the front of the monitor use this illustration and table ...

Страница 8: ...5 Rear components To identify the components on the rear of the monitor use this illustration and table ...

Страница 9: ...r The SPEC label 1 and Barcode label 2 are located on the rear of the monitor The serial number and product number are located on a Safety label You may need these numbers when contacting HP about the monitor model For worldwide models except India ...

Страница 10: ...7 For India ...

Страница 11: ...8 3 Illustrated parts catalog To identify the monitor major components use this illustration and table ...

Страница 12: ... C816 Digi Key 565 1478 ND Connectors by manufacturer Component description Location identifier Component distributor Distributer part number VGA P103 Digi Key 609 5181 ND HDMI P108 Digi Key 1175 1701 ND NOTE The connector may need to be modified to meet functionality regulatory and safety requirements if it is not an exact match You can purchase cables from the HP part store at https partsurfer h...

Страница 13: ...in the Getting started chapter of this guide 2 Clean the room for disassembly 3 Identify the disassembly area 4 Check the position that the monitors are to be placed along with the number of monitors Prepare the area for material flow according to the disassembly layout 5 Be sure to have the following equipment and materials Press fixture Working table Screwdriver Knife Gloves Cleaning cloth ESD p...

Страница 14: ...Remove the base Push the button of base to unlock the base then pull out the base form the stand 2 Remove the stand Push the button of stand to unlock the stand then pull out the stand form the monitor head ...

Страница 15: ...ding case cables Remove the acetate tape red frame that fixes the wire and the isolation cover as shown in the figure unplug the backlight green frame and then remove the aluminum foil yellow frame that fixes the wire and the shield cover Remove the LVDS cable press the tabs on both sides and pull the LVDS cable upwards ...

Страница 16: ...key board out of the front frame remove the tab on the function key board and pull out the function key wire 6 Remove speaker Remove the acetate tape red frame that fixes the wire and the shielding case as shown in the figure and pull the speaker out ...

Страница 17: ...m shielding case Remove the screws 4 fixing the power board screws 2 fixing the mainboard and remove the conductive foam and acetate tape Remove the screws at the mainboard interface screw on the bottom of the shielding case ...

Страница 18: ...umber is 21204 00942 Before removing the power board follow these steps Prepare the monitor for disassembly Remove the power board 1 The HP P21b G4 power board connector position is as follows 2 Locate the part number location on the board ...

Страница 19: ... connectors are on the main board board part number 60104 09633 The connectors identifiers are as follows Connector Location HDMI P108 VGA P103 Before repairing connectors follow these steps Prepare the monitor for disassembly See Preparation for disassembly on page 10 ...

Страница 20: ...e pin 4 Use a hot air gun to melt the solder on the pins 5 Lift the P108 connector from the PCB 6 Place the new component on the PCB Be sure that it matches the PCB footprint 7 Solder the new component VGA connector P103 Repair the VGA connector 8 Use a soldering iron and a desoldering pump to remove as much solder as possible from the pin ...

Страница 21: ...18 9 Lift the P103 connector from the PCB 10 Place the new component on the PCB Be sure that it matches the PCB footprint 11 Solder the new component ...

Страница 22: ...wer cord Monitor is off Power the power button NOTE If pressing the Power button has no effect press and hold the power button for 10 seconds to disable the Power button lockout feature Video cable is improperly connected Connect the video cable properly System is in Sleep mode Press any key on the keyboard or move the mouse to exit Sleep mode Video card is incompatible Open the OSD menu and selec...

Страница 23: ... The monitor s power saving control is disabled Open the OSD menu and select Power Control Auto Sleep Mode and set auto sleep to On On Screen Menus are Locked is displayed The monitor s OSD lock function is enabled Press and hold the Menu button on the front bezel to 10 seconds to disable the OSD lockout function Power Button is Locked is Displayed The monitor s power button is locked Press and ho...

Страница 24: ...og 8 menu button 18 parts 9 power board removal 15 power button location 18 precautions 1 preparation for disassembly 10 RC removal 12 rear components 5 removal power board 15 RC 12 removal and replacement procedures 10 RoHS 2002 95 EC requirements 2 safety information 1 serial number location 6 service information 1 support and troubleshooting 17 troubleshooting 17 VGA connector location 16 ...

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