Dell P2721Q User manual

Service Manual
1
Service Manual
LCD Monitor
P2721Q

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Service Manual Versions and Revision
No.
Version
Release Date
Revision
1
2
1.0
2.0
2020/03/20
2021/03/15
Initial Release
ErP lot 5 additional requirements

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1. IMPORTANT SAFETY NOTICE ............................................................................................................................................................... 4
2. EXPLODED VIEW DIAGRAM WITH LIST OF ITEMS...................................................................................................................................... 5
3. WIRING CONNECTIVITY DIAGRAM ....................................................................................................................................................... 7
4. HOW TO CONNECT &DISCONNECT POWER CABLE/CONNECTIVITY CABLES ................................................................................................... 8
5. LIST OF TOOLS /EQUIPMENT.............................................................................................................................................................10
6. DISASSEMBLY AND ASSEMBLY PROCEDURES .........................................................................................................................................11
7. TROUBLE SHOOTING INSTRUCTIONS....................................................................................................................................................13

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Service Manual
1.Important Safety notice

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2.Exploded view diagram with list of items
23
22
21
7B2203500-JRS-G
NAVIKEY BUTTON,FS,LE27SW,HF SLIDER,FS,LE27SW,HF
LIGHT BAR CABLE
2T581G900-HV7-G
SPRING,Φ0.5*D5*H17,HH,LE27SW,HF 2
1 1
KEYPAD METAL,L5,LE27SW,HF
1
1
EDP CABLE
1
1
LED CABLE
1B43PT500-600-G
P2721Q,MAIN CHASSIS,L5,LE27SW,HF
1B43PT300-600-G
2T54MN400-JRS-G
TAPE ADHENSIVE,L607W10T0.15,LE27SW
ASSY,BACK COVER,LGD,L5,LE27SW,HF
21B43PT400-600-G
STEEL PLATE,L5,LE27SW,HF
1
1
1
K-LOCK PLATE,SGCC,T0.5,L5,LE22SD
7010AP34QC00H01
Q't
Identification NO.
Designation
NO.
NO. Designation Q't
Identification NO.
26
ASSY,P2721Q,STAND,LE27SW,FFT,HF
28
27
RELEASE BUTTON,FS,LE27SW,HF
SIDE USB CABLE
LENS,FS,LE27SW,HF
FOIL,AL,DOUBLE COND,30*11mm*0.1mm
LED BOARD
FRONT BRACKET,L5,LE27SW,HF
1 1
1
1 1 1
1 1
1B51Y1E00-600-GFRONT TRIM,L5,LE27SW,HF
11
ASSY, FRONT TRIM,L5,LE27SW,HF 1
1B51Y1F00-600-G
MID FRAME,L5,LE27SW,HF 1
2
1B51Y1G00-600-GMID FRAME STATOR,L5,LE27SW,HF
1
SIDE USB BOARD
IF BOARD
1
POWER BOARD
24 7B2505N00-JRS-G 1 25 1
1A52LM500-600-G
2
3
1A52LM400-600-GASSY, FRONT TRIM,L5,LE27SW,HF
4
5
6
7 8 9
10
11
1
1A52LMA00-600-G
ASSY,P2721Q,MAIN CHASSIS,L5,LE27SW,HF
51115LP24H03R71
12 13 14 15 16 17
1A52LMA00-600-G
ASSY,P2721Q,MAIN CHASSIS,L5,LE27SW,HF
1A52LMC00-600-G
18 19 20
D52K6,REAR LOGO,BDG,PET,Circle,50mm
29
KEYPAD BOARD POWER BUTTON,FS,LE27SW,HF KEYPAD CABLE
1B43PT200-600-G
7B122BL00-JRS-G
7B122BM00-JRS-G
1B43KKR00-600-G 1B43KKR00-600-G 1A52LED00-80Q-G
1 1 1 1 1
1

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NOTE:
For replacement of power cord, connectivity cable and external power supply (if applicable),
contact Dell:
1. Go to https://www.dell.com/support.
2. Verify your country or region in the Choose A Country/Region drop-down menu at the
bottom-right corner of the page.
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

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3.Wiring connectivity diagram

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4.How to connect & disconnect power cable/connectivity
cables

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5.List of tools / equipment
1. Philips-head screwdriver
2. Hex-head screwdriver

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6.Disassembly and Assembly Procedures
NOTE:
This “Disassembly and Assembly Procedures” is for EMEA only, not for other regions. Please
note that Dell will deem warranty void if any disassembly is done on the monitors.
FIN A L A SSY *1
STA N D A SSY *1
SC R E W ,I,C R O SS,M 3*4 ZN -C C *15
PA N EL A SSY *1
C H A SSIS A SSY *1
BACK COVER ASSY*1
SC R E W ,I,C R O SS,M 4*10,BL K -N L *
B A CK C O V ER ,LG D ,L5,LE27SW ,H F*1
D 52K 6,R EA R LO G O ,B D G ,PET,C ircle,50m m *1
K -LO C K PLA TE,SG C C ,T0.5,L5,LE22SD *1
PO W ER BU TTO N ,FS,LE27SW ,H F*1
R ELEA SE B U TTO N ,FS,LE27SW ,H F*1
SPRIN G ,Φ0.5*D 5*H 17,H H ,LE27SW ,H F*2
SC R E W ,I,C R O SS,T 3*8,B L K -Z N *2
N A V IK EY B U TTO N ,FS,LE27SW ,H F*1
K EY PA D M ETA L,L5,LE27SW ,H F*1
SC R E W ,I,C R O SS T,T3*6 ZN C C *2
TA PE,A C E,30x50m m ,LE24SF,H F *2
TA PE,A C E,28x34m m ,LP2296 *1
FO IL,A L,D O U B LE C O N D ,30*10m m *0.1m m *1
TA PE,A C E,W 80xL30m m ,LE22PJ,FS,H F *1
LE27SW D ISA SSEM B LY B LO C K
panel*1
M Y LA R PA N EL,LE27SW ,H F *1
M Y L A R SID E H O LE,L E27SW ,H F *1
Pow erB O A R D *1
-LIG H T B A R C A BLE*1
-SC R EW ,P,C R O SS M 3*6,ZN -C C *4
-SC R EW ,PW ,C R O SS M 4X 9,Zn-C C *
I/F B O A R D *1
-E D P C A B LE*1
-K EY PA D C A BLE*1
-SID E U SB C A B LE*1
-SC R EW ,P,C R O SS M 3*6,ZN -C C *4
C H A SSIS *1
-M Y LA R C H A SSIS,LE27SW ,H F *1
-M Y LA R SID E H O LE-1,L E27SW ,H F *2
-M Y LA R SID E H O LE-2,L E27SW ,H F *1
-M Y LA R C H A SSIS BA C K ,LE27SW ,H F *2
MID FRAME ASSY*1
M ID FRA M E STA TO R ,L5,LE27SW ,H F *2
STEEL PLA TE,L5,LE27SW ,H F *2
M ID FR A M E,L 5,LE 27SW ,H F *1
SC R EW ,I,C R O SS,T2*3,Zn-C c,R O H S *
A SSY ,LEN S,FS,LE27SW ,H F *1
SC R EW ,I,C R O SS T,T3*6 ZN C C *1
FR O N T TR IM A SSY *1
TA PE A D H EN SIV E,L607W 10T0.15,LE27SW *1
FR O N T B R A C K ET,L 5,L E27SW ,H F *1
FR O N T TR IM ,L 5,L E27SW ,H F *1
SL ID ER ,FS,L E27SW ,H F*1
LED B O A R D *1
Note: 1. The arrows point out the direction of disassembly.
Disassemble the slot of Back cover from monitor

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LE27SW A SSEM B LY B LO C K
PA N EL A SSY *1
panel*1
C H A SSIS A SSY *1
FIN A L A SSY *1
STA N D A SSY *1
FR O N T TR IM A SSY *1
SC R EW ,I,C R O SS,M 3*4 ZN -C C *15
C H A SSIS *1
-M Y LA R CH A SSIS,LE27SW ,H F *1
-M Y LA R SID E H O LE-1,LE27SW ,H F *2
-M Y LA R SID E H O LE-2,LE27SW ,H F *1
-M Y LA R C H A SSIS BA C K ,LE27SW ,H F *2
M Y LA R PA N EL,LE27SW ,H F *1
M Y LA R SID E H O LE,LE27SW ,H F *1
I/F board*1
-E D P C A B LE *1
-K EY PA D C A BLE*1
-SID E U SB C A B LE *1
-SC R EW ,P,C R O SS M 3*6,ZN -C C *4
Pow erB O A RD *1
-LIG H T B A R CA BLE*1
-SC R EW ,P,C R O SS M 3*6,ZN -C C *4
-SC R EW ,PW ,C R O SS M 4X 9,Zn-C C *
TA PE,A C E,30x50m m ,LE24SF,H F *2
TA PE,A C E,28x34m m ,LP2296 *1
FO IL,A L,D O U B LE C O N D ,30*10m m *0.1m m *1
TA PE,A C E,W 80xL30m m ,LE22PJ,FS,H F *1
TA PE A D H EN SIV E,L607W 10T0.15,LE27SW *1
FR O N T B R A C K ET,L5,LE27SW ,H F *1
FR O N T TR IM ,L5,L E27SW ,H F *1
M ID FR A M E STA TO R ,L5,LE27SW ,H F *2
STEEL PLA TE,L5,LE27SW ,H F *2
M ID FR A M E,L5,LE27SW ,H F *1
SC R EW ,I,C R O SS,T2*3,Zn-C c,R O H S *
A SSY ,LEN S,FS,LE27SW ,H F *1
SC R EW ,I,C R O SS T,T3*6 ZN C C *1
MID FRAME ASSY*1
B A C K C O V ER ,LG D ,L5,LE27SW ,H F*1
D 52K 6,R EA R LO G O ,B D G ,PET,Circle,50m m *1
K -LO C K PLA TE,SG C C,T0.5,L5,LE22SD *1
PO W ER B U TTO N ,FS,LE27SW ,H F*1
R ELEA SE B U TTO N ,FS,LE27SW ,H F*1
SLID E R ,FS,LE 27SW ,H F*1
SPR IN G ,Φ0.5*D 5*H 17,H H ,LE27SW ,H F*2
SC R EW ,I,C R O SS,T3*8,B LK -ZN *2
N A V IK EY B U TTO N ,FS,LE27SW ,H F*1
K EY PA D M ETA L,L5,LE27SW ,H F*1
SC R EW ,I,C R O SS T,T3*6 ZN C C *2
BACK COVER ASSY*1
SC R EW ,I,C R O SS,M 4*10,B LK -N L *
LED B O A R D *1

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7.Trouble shooting instructions

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