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Dell P2421DC, Service Manual

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Page: 15 / 24

Dell P2421DC Service Manual Download Page 15

15

Tear out all the cable to remove the rear cover and

put it on a protective cushion. Use a Philips-head

screwdriver to remove 10 screws for unlocking

the middle plastic bezel with the whole unit, and

then remove the middle plastic bezel carefully.

(No.1~20 screw size=M3x4, Torque=3±0.5kgfxcm)

Remove the mylar by hand and Use a

Philips-head screwdriver to remove 9 screws for

unlocking the main board and the adapter board

(No.1~9 screw size=D3x6, Torque: 6±1kgf.cm)

Disconnect all of the cables to separate the

power board and main board.

The main board

The Mainframe

S8

S9

S7

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Summary of Contents for P2421DC

Page 1: ...1 Service Manual P2421DC Version 02 Date 2021 10 11 ...

Page 2: ...ETY General Power Safety 5 2 Exploded view diagram with list of items 6 3 Wiring connectivity diagram 8 4 How to connect and disconnect power cable connectivity cable 9 5 Disassembly and Assembly Procedures 11 5 1 Disassembly SOP 11 5 2 Assembly SOP 15 6 Trouble shooting instructions ...

Page 3: ...erenced in your computer documentation before placing a monitor or other devices on top of your computer Ensure that nothing rests on your equipment s cables and that the cables are not located where they can be stepped on or tripped over Ensure that all cables are connected to the appropriate connectors Some connectors have a similar appearance and may be easily confused for example do not plug a...

Page 4: ...nd then discharge into another object such as your computer To prevent ESD damage you should discharge static electricity from your body before you interact with any of your equipment s internal electronic components such as a memory module You can protect against ESD by touching a metal grounded object such as an unpainted metal surface on your computer s I O panel before you interact with anythi...

Page 5: ...as risk of electric shock and or fire Ensure that the ground prong of the power plug is inserted into the mating ground contact of the power strip Be sure to grasp the plug not the cable when disconnecting equipment from an electric socket If your equipment uses an AC adapter Use only the Dell provided AC adapter approved for use with this device Use of another AC adapter may cause a fire or explo...

Page 6: ...6 2 Exploded view diagram with list of items 19 20 21 ...

Page 7: ...No Description Q ty Remark 1 LOGO 1 For EMEA Only not for other regions 2 DECO CHIN 1 3 DECO PLATE 1 4 MID FRAME 1 5 FUNCTION KEY 1 6 POWER KEY 1 7 REAR COVER 1 8 SPRING 2 9 QR SLIDE 1 10 QR BUTTON 1 11 K LOCK BKT 1 12 MYLAR BOT 1 13 MYLAR TOP 1 14 MAINFRAME 1 15 MYLAR 1 16 MAINFRAME 1 17 STAND ARM 1 18 STAND BASE 1 S1 SCREW 6 S2 SCREW 3 S3 SCREW 13 S4 SCREW 8 S5 SCREW 1 S6 SCREW 4 19 Power Cable ...

Page 8: ...8 3 Click Contact Us next to the country dropdown 4 Select the appropriate service or support link based on your need 5 Choose the method of contacting Dell that is convenient for you ...

Page 9: ...9 3 Wiring connectivity diagram ...

Page 10: ...10 4 How to connect and disconnect power cable connectivity cable ...

Page 11: ...11 ...

Page 12: ...12 ...

Page 13: ...ll will deem warranty void if any disassembly is done on the monitors Tools Required List the type and size of the tools that would typically can be used to disassemble the product to a point where components and materials requiring selective treatment can be removed Tool Description Screwdriver Phillip head Hexagonal head Penknife ...

Page 14: ...locking mechanisms No 1 4 screw size M4x10 Torque 12 2kgf cm Wedge your fingers between the rear cover and the middle bezel on the corners of the top side of the monitor to release the rear cover then use Scraper to separate the rear cover in the below 3direction of the arrow Tearoff the tape and cable to separate the rear cover No 1 2 Screw size M3x4 Torque 3 0 5kgf cm S2 S3 S4 S5 S6 ...

Page 15: ... whole unit and then remove the middle plastic bezel carefully No 1 20 screw size M3x4 Torque 3 0 5kgfxcm Remove the mylar by hand and Use a Philips head screwdriver to remove 9 screws for unlocking the main board and the adapter board No 1 9 screw size D3x6 Torque 6 1kgf cm Disconnect all of the cables to separate the power board and main board The main board The Mainframe S8 S9 S7 ...

Page 16: ...e 6 1kgf cm Use a Philips head screwdriver to remove 3 screws for unlocking the key board and the middle frame No 1 3 screw size M2X2 5 Torque 6 1kgf cm Use a Philips head screwdriver to remove 1 screws to remove the USB board Disconnect the cables of the USB board No 1 screw size M3x6 Torque 4 1kgf cm The USB Board S10 S12 S13 ...

Page 17: ...17 5 2 Assembly Procedures Use a Philips head screwdriver to lock 1 screw to assemble the USB board Connect the cables of the USB board No 1 screw size M3x6 Torque 4 1kgf cm ...

Page 18: ... cm Use a Philips head screwdriver to lock 3 screws for locking the bezel and the middle frame No 1 3 screw size M2X2 5 Torque 6 1kgf cm Connect all of the cables between the power board and main board stick the mylar by hand and Use a Philips head screwdriver to lock 9 screws for locking the main board and the adapter board S2 S3 S4 S5 ...

Page 19: ...cushion Use a Philips head screwdriver to lock 10 screws for locking the middle plastic bezel with the whole unit No 1 20 screw size M3x4 Torque 3 0 5kgfxcm Assemble the rear cover Use a Philips head screwdriver to lock four screws on the rear cover Assemble the stand S7 S8 ...

Page 20: ...20 6 Trouble shooting instructions ...

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