Acer AL718 Service Manual Download Page 33

Page: 33 / 44

DABLU6

R32

0/6/NS

0.01u/6

C40

22u/6.3V

DBGRN5

DBRED4

GND

DARED5

DAGRN2

DBBLU1

GND

R35

4.7K/6

EVEN

+5V

DARED0

R14
100/6

TXEVEN2-

GND

DABLU1

GND

DBBLU1

DABLU0

TXEVEN1-

DARED7

C13

0.1u/6

U1
DS90CF383MTD

51
52

54
55
56

6
7

11
12
14

16
18

19
20
22

48
47

46
45
42
41

40
39

49
43
36

1 9 1

25
27
28

38
37

TXIN0

TXIN1
TXIN2
TXIN3
TXIN4

TXIN5

TXIN6

TXIN7

TXIN8
TXIN9

TXIN10
TXIN11

TXIN12
TXIN13

TXIN14

TXIN15

TXIN16
TXIN17

TXIN18
TXIN19
TXIN20

TXCLKIN

PWRDWN

TXOUT0-

TXOUT1-

TXOUT2-

TXCLKOUT-

LVDSVCC

LVDSGND
LVDSGND

LVDSGND

PLLVCC

PLLGND

GND

V V V V

TXIN27

TXIN21

TXIN22

TXIN23
TXIN24

TXIN25
TXIN26

TXOUT3-

C16

0.1u/6

DBRED2

DBGRN4

DAGRN6

CX000800000/1206

DHS

C23

470u/16V

DBRED6

TXODD0-

DBRED1

DABLU3

0.01u/6

DBRED6

DBGRN6

LCDVCC

DBGRN0

DABLU6

C72

1u/8

DBGRN4

DBRED3

DEN

DAGRN1

TXODDC-

C17

0.1u/6

DEN

DBBLU4

CX000800000/1206

22u/6.3V

R31

47K/6

DABLU7

DBGRN5

LCDVCC

C15

0.1u/6

DAGRN3

22u/6.3V

DARED2

DAGRN3

DBRED4

DEN

DBGRN3

TXODD0-

C184

12p/6

GND

DARED4

DARED6

DBBLU0

DARED4

DBGRN6

GND

TXEVEN1-

L20

CX000800000/1206

DBBLU6

GND

DBRED0

DBBLU3

DBBLU0

TXEVEN2-

DBRED5

DBBLU2

DAGRN5

DABLU4

DABLU3

TXODD3-

TXODDC-

DBRED0

DBBLU3

LCDVCC

CX000800000/1206

DABLU2

DBGRN1

DAGRN2

DAGRN4

MMBT3904L

TXEVENC-

DBRED5

DBGRN7

TXEVEN3-

DBBLU5

DAGRN5

DABLU0

0.01u/6

GND

DABLU4

C183

470u/16V

DBRED7

DBBLU7

SI9435

2
3

7
6

LCDVCC

DBGRN2

TXODD3-

DABLU2

1.differential trace 10m il

GND

TXEVENC-

GND

C22

0.1u/6

DABLU5

DVS

GND

TXODD2-

DARED0

DBGRN7

TXODD1-

DBBLU7

C182

0.1u/6

2.differential trace spacing 12m il

DAGRN7

22u/6.3V

DAGRN[0..7]

DBBLU4

DBGRN0

DARED3

DBGRN1

DABLU[0..7]

0.01u/6

DAGRN0

DAGRN6

TXEVEN0-

DARED[0..7]

ODD

3.per pairs +/- 10%

DABLU7

CN1

1841 30P

1
3
5
7

11
13
15

17
19
21
23
25

27
29

2
4
6
8

10
12
14
16

18
20
22
24
26

28
30

1
3
5
7

9
11
13
15

17
19
21
23

25
27
29

2
4
6
8

10
12
14
16

18
20
22
24

26
28
30

DAGRN4

CX000800000/1206

PPWR

GPO3

DBRED2

DBRED[0..7]

DHS

22u/6.3V

DVS

DARED2

DAGRN1

L21

CX000800000/1206

C14

0.1u/6

DVS

DARED1

TXEVEN3-

4.pairs and pairs +/- 20%

+3.3V

DBGRN3

100p/6

DHS

DARED1

C18

0.1u/6

GND

TXODD2-

DARED5

DISP_CLK

DCLK

GND

DBBLU[0..7]

C19

0.1u/6

GND

DBBLU6

TXODD1-

DBRED3

DBBLU2

C42

0.1u/6

DABLU5

DCLK

DBGRN2

DBGRN[0..7]

TXEVEN0-

GND

C20

0.1u/6

DARED3

U2
DS90CF383MTD

TSSOP56

51
52
54

55
56

4
6
7

11
12
14

16
18

20
22

48
47
46

45
42
41

40
39

49
43
36

35
33

1 9 1

23
24

25
27
28
30

TXIN0
TXIN1
TXIN2

TXIN3
TXIN4

TXIN5

TXIN6

TXIN7
TXIN8

TXIN9

TXIN10
TXIN11

TXIN12
TXIN13
TXIN14

TXIN15

TXIN16
TXIN17

TXIN18

TXIN19
TXIN20

TXCLKIN

PWRDWN

TXOUT0-

TXOUT1-

TXOUT2-

TXCLKOUT-

LVDSVCC

LVDSGND
LVDSGND
LVDSGND

PLLVCC

PLLGND
PLLGND

GND

V V V V

TXIN27

TXIN21
TXIN22

TXIN23
TXIN24
TXIN25

TXIN26

TXOUT3-

DAGRN7

DARED7

DCLK

DBRED1

GND

DARED6

DABLU1

DBRED7

CX000800000/1206

DAGRN0

DISP_CLK

DBBLU5

GND

AL718

10-6

Summary of Contents for AL718

Page 1: ...Acer AL718 Service Guide ...

Page 2: ...ON 3 SPECIFICATIONS 4 THEORY OF OPERATION 5 EXPLORED DRAWING DISASSEMBLY INSTRUCTIONS 6 CONTROL LOCATION 7 NECESSARY EQUIPMENT LIST 8 BLOCK DIAGRAM 9 CONDUCTOR VIEW 10 SCHEMATIC DIAGRAM 11 TROUBLE SHOOTING HINTS 12 BOM LIST 13 REPLACEMENT PARTS 14 SPARE PARTS LIST AL718 ...

Page 3: ...cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt within this service information by anyone else could result in serious injury or death AL718 A 1 ...

Page 4: ...he associated transfomer circuits 3 POWER SUPPLY REQUIREMENTS The external powr converter for this display utilizes AC and DC cords AC cord is detachable but DC cord is permanently attached Any attempt to replace another adapter could result in serious problem on the display 4 LEAKAGE CURRENT HOT CHECK 4 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer during this...

Page 5: ...1 DIMENSIONS 1 1 Front View unit mm 1 2 Real View unit mm AL718 1 1 ...

Page 6: ...1 3 Top View unit mm 1 4 Side View unit mm AL718 1 2 ...

Page 7: ...nction OSD 5 Languages function is excellent and new man machine interface Anyone is able to set up the picture as he like through OSD menu 2 3 Self Test function Self Testing picture comes out by pushing special key in the case of no connection with computer or power saving operation This function shows if monitor is alive or not and can be used for self aging test 2 4 Ergonomic design Low emissi...

Page 8: ... mm 14 8 Depth 182 mm 7 2 2 2 Net Weight 4 24kg 9 35 lbs 2 3 Maximum Viewable Area Diagonal 432 mm 17 3 PANEL SPECIFICATIONS 4 CONNECTORS 4 1 AC power cord CEE22 typed connector 4 2 Audio cable CN6 DB15HD 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 16 17 J1 PHONEJACK STEREO 1 2 3 PIN MNEMO SIGNAL 1 RV Red Video 2 GV Green Video 3 BV Blue Video 4 NC None 5 GND Ground DDC return 6 RG Red GND 7 GG Green GND ...

Page 9: ...Video signal level 0 7 Vpp Contrast Max Brightness Max Ambient 20 5 C degrees Input voltage AC 120 60Hz Warming up time 30 minutes Display mode 1280 x 1024 State Power Indicator On 50Watts Green Standby 1 Watts Amber Off 1 Watts Input voltage 90 240 Volts Power frequency 50 60 Hz Input current 2 Arms Inrush current 90A Power 50 Watts Fv Fh mode Resolution Hz KHz 1 IBM VGA 720 x 400 70 31 46 2 VESA...

Page 10: ...ini D Sub 15P connectors at both ends Length 1 8 meter 11 RELIABILITY 11 1 MTBF for completed unit without LCD 50 000 hours demonstrated MTBF 11 2 MTBF for LCD The brightness is still more than 50 of the original brightness after 30 000 hours min Operation Storage and Shipment Temperat ure 0 40 C 20 60 C Humidity 5 90 5 90 Altitude 3000m 12000m Value 250 cd m2 at center of the display area Specifi...

Page 11: ...k TCLK and XTAL This is the input pair to an internal crystal oscillator and corresponding logic A 14 318 MHz crystal is recommended b Hardware Reset Pin 5 Hardware Reset signal is generated by MAX809 U10 It assert a reset signal at least 100 ms c Analog to Digital Converter The gm2120 chip has three ADC s analog to digital converters one for each color red green and blue The analog RGB signals ar...

Page 12: ...ck is transmitted in parallel with the data streams over a fifth LVDS link At a transmit clock frequency of 85 MHz 24 bits of RGB data and 3 bits of LCD timing and control data FPLINE FPFRAME DRDY are transmitted at rate of 595 Mbps per LVDS data channel U1 AS the ODD pixel transmitter U2 as the EVEN pixel transmitter Pin Number Pin Name Pin Usage 40 GPIO0 PWM0 Backlight control 41 GPIO1 PWM1 Volu...

Page 13: ... 3 3Vdc load 1A 2 5Vdc load 0 3A Brightness Voltage from 0 3 3 3Vdc ON OFF Voltage High 3 3Vdc Low 0Vdc Brightness Voltage Vadj 0 3 Max 3 3Vdc min On Off Voltage High 3 3Vdc Low 0Vdc Audio Mute Voltage 0Vdc Mute enable 3 3Vdc Mute Disable Audio Voltage Voltage 0 4Vdc Min 3 3Vdc Max Output Static Output Characteristics 5V 1A Output 4 75Vdc 5 1Vdc 3 3V 1A Output 3 135Vdc 3 465Vdc 2 5V 0 3A Output 2 ...

Page 14: ...Pin 11 Audio Mute CN2 Pin 1 Speaker left1 Pin 2 Speaker left2 Pin 3 Speaker right1 Pin 4 Speaker right2 CN201 CN204 Pin 1 HV High Voltage for CCFL Pin 2 Return Low Voltage for CCFL AL718 4 4 ...

Page 15: ...5 EXPLORED DRAWING DISASSEMBLY INSTRUCTIONS 5 1 EXPLORED DRAWING AL718 5 1 ...

Page 16: ... 5 2 1 Stand base rear cover removal 1 remove the two screws 1 from neck 2 remove the base 3 remove the real cover 5 2 2 PCB holder removal 1 slide the pcb holder from the panel model 2 remove the pcb holder AL718 5 2 ...

Page 17: ...5 2 3 Panel module removal 1 remove four screws 4 5 2 remove the Panel module AL718 5 3 ...

Page 18: ...There are 5 sub functions in main menu The selected function icon will show in red in Power on off Soft Power Power In menu operation change the selected item or decrease adjusted value If audio exist decrease volume level _ In menu operation change the selected item or increase adjusted value If audio exist increase volume level Select Escape the sub menu or enter item adjusting Auto configuratio...

Page 19: ...by press or Key and press Select key to enter the sub function Brightness Contrast Function Tracking Function Position Function Color Function Other Function Selec Selec Selec Selec AL718 6 2 ...

Page 20: ... or are used to adjust the value The Menu key will act as quit and back to OSD off during the main Step 1 The Menu button can back to OSD ON To use or button to select the Brightness Contrast Tracking Position Color and Other The Select button can enter function adjustment and goto next step The Menu button can back to OSD OFF Step 2 To use or button to select the item to be adjusted Selec No Sign...

Page 21: ... or button is to adjust the item value The Select or Menu button is to finish adjustment and then back to Step 2 6 3 2 Volume Menu Operation Use or to adjus t Volume level and Select to toggle mute on off Menu to quit Volume adjust operation 6 3 3 OSD Time out The OSD Time out is defined to 20 sec AL718 6 4 ...

Page 22: ...tion 1 Personal Computer with Windows 98 or above version 2 Luminance Meter Minolta CA 110 3 Video Gnerator Chroma 2000 2135 2250 or equivalent 4 Colour Analyzer Minolta Chroma or equivalent 5 Watt Power Meter 6 10 Times Magnifier AL718 7 1 ...

Page 23: ...8 1 Power Module 8 BLOCK DIAGRAM Power Module To Panel lamp Inverter Output Voltage Output Audio Output TDA7496 IC301 Speaker 2 AC Input 90 264V Audio Line input 5V 3A 3 3V 500mA 2 5V 500mA AL718 8 1 ...

Page 24: ...VSYNC HSYNC 3 3V AVDD 2 5V_AVDD 3 3V_DVDD AT24C16 U4 GPIO 13 12 NVRAM SCL SDA AT49HF U7 ROM DATA0 7 U1 ODD DS90CF383MTD DHS DVS DEN DCLK Power Reset U10 RESET U2 EVEN DS90CF383MTD DISP CLK PPWR Panel TXODD TXEVEN LCDVCC Key Control GPIO0 PWMO HS VS GPIO1 PWM1 VOLU Control TO PANEL LVDS INTERFACE EB EG ER 0 7 DATA OB OG OR 0 7 DATA AL718 8 2 ...

Page 25: ...9 PCB CONDUCTOR VIEW 9 1 Main Board AL718 9 1 ...

Page 26: ...AL718 9 2 ...

Page 27: ...9 2 Button Board AL718 9 3 ...

Page 28: ...10 SCHEMATIC DIAGRAM 10 1 Main Board 1 SHEET 1 CONTENTS 4 gm2120 6 LVDS IF CONTENTS 3 6 2 TOP LEVEL 4 SCHEMATIC 5 DISPLAY 5 2 3 INPUT CONNECTOR AL718 10 1 ...

Page 29: ...ute LCD_ON OFF VS DHS PBIAS HS DEN EB 0 7 EG 0 7 OR 0 7 OG 0 7 OB 0 7 GPIO8 IRQINn GPIO7 GPIO6 GPIO3 TIMER1 GPIO2 PWM2 GPIO1 PWM1 GPIO0 PWM0 GPIO21 IRQn HCLK HFSn ER 0 7 DVS DCLK PPWR GPIO10 GPIO9 G P O 3 D A R E D 0 7 GPIO9 RED GPIO7 D A B L U 0 7 GPIO10 DHS GREEN ER 0 7 D B R E D 0 7 EB 0 7 Display 5 Display GPIO7 GPIO6 ER 0 7 EG 0 7 EB 0 7 OR 0 7 OG 0 7 OB 0 7 GPIO8 IRQINn GPIO21 IRQn GPIO3 TIM...

Page 30: ... IN GND VGA 5V R62 22 6 RED 4 D3 5 6V 1 3 C131 0 01u 6 VGA 5V BLUE IN BLUE 4 GND C99 47p 6 GND R65 0 6 GREEN 4 R72 510 6 HS 4 GND C155 0 1u 6 1 2 D2 5 6V 1 3 RED IN C112 0 01u 6 VGA_SDA GND GREEN IN GND HCLK 4 C114 0 01u 6 R96 75 6 GREEN IN VGA VSYNC 1 H2 MTH276D126 2 3 4 5 6 7 8 9 BLUE 4 VGA_SCL R110 47K 6 RED IN GND VGA_HSYNC GND D1 5 6V 1 3 RED IN CN2 VGA INPUT 1 3 5 7 9 11 13 2 4 6 8 10 12 14 ...

Page 31: ... ROM_DATA0 ROM_DATA1 ROM_DATA2 ROM_DATA3 ROM_DATA4 ROM_DATA5 ROM_DATA6 ROM_DATA7 ROM_ADDR14 ROM_ADDR13 ROM_ADDR9 ROM_ADDR11 ROM_ADDR10 ROM_ADDR12 ROM_OEn V D D 1 _ A D C _ 2 5 V D D 2 _ A D C _ 2 5 AGND_GREEN AGND_RED AGND_BLUE AGND_ADC SGND_ADC AGND_RX2 R V D D R V D D R V D D R V D D R V D D R V D D R V D D R V D D C V D D _ 2 5 C V D D _ 2 5 C V D D _ 2 5 C V D D _ 2 5 R E S E R V E D PPWR PBIA...

Page 32: ..._ON OFF LCD_ON OFF 4 GND C34 12p 4 1 2 C43 0 1u 6 1 2 C188 0 1u 6 1 2 GND DARED4 C89 12p 4 1 2 R114 22 6 1 2 OG6 C25 12p 4 1 2 RN1 22 1 2 3 4 5 6 7 8 EB6 DARED1 DAGRN5 KEY_SEL C12 12p 6 NS EG0 3A OB0 DARED5 C27 12p 4 1 2 DBRED4 KEY_UP EB4 C135 12p 6 5V DARED7 C77 12p 4 1 2 C189 0 1u 6 1 2 DBGRN0 C79 12p 4 1 2 OR 0 7 4 DBBLU0 C67 12p 4 1 2 OG5 OG7 ER6 DBRED5 DBGRN5 C10 12p 6 NS RN3 22 1 2 3 4 5 6 7...

Page 33: ...183 470u 16V DBRED7 DBBLU7 TXODD3 TXEVENC Q6 SI9435 2 3 4 5 7 6 8 1 LCDVCC DBGRN2 TXEVEN1 TXODD3 DABLU2 1 differential trace 10m il GND TXEVENC GND TXODD1 C22 0 1u 6 DABLU5 DVS GND TXODD2 DARED0 DBGRN7 TXODD1 DBBLU7 C182 0 1u 6 1 2 2 differential trace spacing 12m il DAGRN7 C8 22u 6 3V DAGRN 0 7 5 DBBLU4 DBGRN0 DARED3 DBGRN1 DABLU 0 7 5 C2 0 01u 6 DAGRN0 DAGRN6 TXEVEN0 DARED 0 7 5 ODD 3 per pairs ...

Page 34: ...10 2 Button Board 2 BUTTON BOARD CONTENTS I O INTERFACE SHEET CONTENT 1 SCHEMATIC AL718 10 7 ...

Page 35: ...R 1 2 3 4 5 6 7 8 9 10 LEFT RIGHT SW4 HDK632R ST 1 3 2 4 SW2 HDK632R ST 1 3 2 4 SW3 HDK632R ST 1 3 2 4 orange LED1 EL 209 2EGW A1 C A2 MENU SW5 HDK632R ST 1 3 2 4 green SW1 HDK632R ST 1 3 2 4 AUTO SEL POWER AL718 10 8 ...

Page 36: ...6 2 5V Change Power module No Check Scalar module Output CN3 Pin 1 2 5V Pin 4 3 3V Pin 6 2 5V Change Cable From power module CN1 to Scalar B CN3 No No Power Check Power Button From Scaler B CN4 to Button B CN1 Change Cable Check cable Open Change Switch or Button board OK No No Yes OK AL718 11 1 ...

Page 37: ... 3V Output Check Q6 U10 CN3 Check LVDS U1 U2 Output Check Inverter OK Check U8 GM2120 R G B Output Change Inverter No Check x TAL X1 14 318Mhz Check H V SYNC Change X1 Check Panel Change Connector 30Pin or Cable Change VGA Cable Change U8 GM2120 No YES YES YES YES YES AL718 11 2 ...

Page 38: ...able Change Speaker Check Power Module CN1 Pin12 Volume Pin11 Mute Change Cable OSD Control Mute Volume Check IC301 ADA7496 Correct Check Input Signal JK1 OK Check Signal Source Or change JK1 Change ADA7496 Or Power Module OK OK OK OK OK NO NO NO NO AL718 11 3 ...

Page 39: ...06J906 CAPACITOR CHIP 12P 50V 5 NPO 0603 11 19 3 CH01506JB06 CAP CHIP 15P 50V 5 C0G 0402 49 20 3 CH03306J905 CAPACITOR CHIP 33P 50V 5 NPO 0603 2 21 3 CH04706J902 CAPACITOR CHIP 47P 50V 5 NPO 0603 2 22 3 CH11006J901 CAPACITOR CHIP 100P 50V 5 NPO 0603 1 23 3 CH31006K919 CAP CHIP 0 01U 50V 10 X7R 0603 10 24 3 CH41004Z931 CAP CHIP 0 1u 25V 80 20 Y5V 0603 45 25 3 CJ022084N10 RES ARRAY CHIP 22 1 16W 5 8...

Page 40: ...ER ASSY 1 58 2 37L70PBSY03 L70L N POWER B SHIELD ASSY 1 59 2 FAL70012011 LCD BKT L L70L N FAL70012 REV3A 1 60 2 FAL70013017 LCD BKT R L70L N FAL70013 REV3A 1 61 2 FBL70002016 GND PLATE P L70B FBL70002 REV3A L 1 62 2 FBL70003012 GND PLATE S L70B FBL70003 REV3A L 1 63 2 MF30060PBJ5 SCREW F3 0 6 0 P NI 3 64 2 MM30030IBJ4 SCREW M3 3 I NI 6 65 2 MM30060IBJ8 SCREW M3 0 6 0 I NI 4 66 2 FBL5T001017 AL FOI...

Page 41: ...MOSFET SI9435DY 30V 5 1A 1 PC Q6 3 BAN70020T04 TRANSISTOR MOSFET 2N7002 60V 0 115A 2 PC Q1 Q14 3 BCAN202UZ01 DIODE SMD DAN202U 80V 100MA SMD 1 PC D9 3 BD05232BZ09 DIODE ZENER SMD MMBZ5232B 5 6V SOT23 4 PC D1 D2 D3 D4 3 CH00506J904 CAPACITOR CHIP 5P 50V 5 NPO 0603 2 PC C102 C107 3 CH01206J906 CAPACITOR CHIP 12P 50V 5 NPO 0603 11 PC C113 C116 C129 C132 C135 C137 C139 C14 1 C145 C154 C184 3 CH01506JB...

Page 42: ...CHIP 75 1 10W 5 0603 3 PC R85 R90 R96 3 CS11003J904 RESISTOR CHIP 100 1 10W 5 0603 3 PC R14 R102 R106 3 CS14703J908 RESISTOR CHIP 470 1 10W 5 0603 2 PC R118 R119 3 CS15103J909 RESISTOR CHIP 510 1 10W 5 0603 1 PC R72 3 CS21003F904 RESISTOR CHIP 1K 1 10W 1 0603 1 PC R93 3 CS21003J906 RES CHIP 1K 1 10W 5 0603 2 PC R13 R143 3 CS24703J900 RES CHIP 4 7K 1 10W 5 0603 1 PC R35 3 CS31003J908 RES CHIP 10K 1...

Page 43: ... 2R MS P2 0 H6 0 1 PC CN2 2 DFHD30MR259 CONN DIP HEADER 30P 2R MR P2 0 H4 0 1 PC CN1 13 2 Button Board Replacement Parts List P N 23L70BBTN02 Part Number Part Description Qty UOM Location 2 BEYG0024DA5 LED DIP YELLOW GREEN L 3WAFN 1GYW 1 PC LED1 2 DAL70TB42A4 PCB BUTTON L70L T TB 2L 143 5 15 REVA 1 PC 2 DFHD10MR316 CONN DIP HEADER 10P 1R MR P2 0 H4 1 1 PC CN1 2 DHP00062N10 SWITCH PUSH BUTTON DTSA ...

Page 44: ...0L T BUTTON B ASSY 1 Button board 5 24L70LBTN03 L70L T LCD BEZEL ASSY 1 6 25L70LC0003 L70L B LCD COVER ASSY 1 7 26L70SA0001 L70L B STAND ASSY 1 8 29L70BATN02 L70L T BASE ASSY 1 9 DDL70LLC006 CABLE ASSY L70L MB LCD 30P REV1A 1 10 DDL70LPB006 CABLE ASSY L70L MB POWER 12P REV1A 1 11 DDL70LPC002 CABLE ASSY L70L MB VGA 14 15P REV1A 1 VGA cable 12 DDL70LTH006 CABLE ASSY L70L MB BUTTON 10P REV1A 1 13 DDL...

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Summary of Contents for AL718

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