Acer B223W - Bdmr - 22" LCD Monitor Скачать руководство пользователя страница 50 | Manualshive

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Acer

Acer –LCD-B223W

28

7.0 Assembly and Disassembly

Sequence

Item

Photo

Procedures

P/N

Description

S1

Place
panel

(1).Take panel out of box and place it on
the foam.
(2).Tear open the PE bag and put it in
the designated carton.
(3).Place panel on the foam like the
attached picture.
Remark:Do not touch the lamp cord and
place the surface of panel downsides on
the cushion.

631102220091R

LCP
22"MT220WW0
1-V0-
G1,AM2200001
001(INNO

S2

Insert

Keypay's

wrie

1.Check if the keypad and relevent wire
you choose are OK.
2.Insert the wire into the keypad like the
Picture

430300801690R

HRN ASSY
2x4P to 8P
245mm
UL1571#28,RO
HS

S3

Fix front

bezel

1.Check if there is any lacquer missed or
sctratch happened to the front bezel.
2.Insert the fixed keypad into the front
bezel as picture

714030015400R

ASSY,BEZEL,F
RONT,(silver),LE
22D3

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Содержание B223W - Bdmr - 22" LCD Monitor

Страница 1: ...Acer Acer LCD B223W 0 Service Manual LCD Monitor Acer B223W ...

Страница 2: ...4 06 Schematics and Layouts 45 07 Assembly and Disassembly 48 Appendix User s manual Copyright Copyright 2006 InnoLux Tech Corp Ltd All Rights Reserved This manual may not in whole or in part be copied Photocopied reproduced translated or converted to any electronic or machine readable form without prior written permission of InnoLux Tech Corp Ltd Acer B223W Service Manual ...

Страница 3: ...plug the power cable immediately and consult your closed dealer z Always unplug the monitor before cleaning it Clean the cabinet with a clean dry cloth Apply non ammonia based cleaner onto the cloth not directly onto the class screen z Do not place heavy objects on the monitor or power cord 2 Product safety notice Many electrical and mechanical parts in this chassis have special safety visual insp...

Страница 4: ...A DDCCI OSD language English French Spanish Italian Deutsch Simplified Chinese Traditional Chinese Japanese Dutch Finnish Russian depend on sale region Universal AC power supply Note 1 2 3 This item spec depend on the LCD panel 1 2 Accessories AC Power Cord 1 8 m Black Cord type depend on sale region VGA cable 1 8 m 15 pin D SUB black cable with blue male connector User manual English 640Mb CD War...

Страница 5: ...ng the LCD panel The LCD panel life which is defined as the time period for the maximum luminance to reduce to 50 of the initial value is 40 000 hours minimum at the condition of displaying an all WHITE field at mid Brightness and Contrast settings 3 Electrical and Optical Characteristics and Performance 3 1 Backlight Power Supply 3 1 1 AC Input Voltage Range It is a universal type and the input v...

Страница 6: ...tput it must be shorted before F802 b OPP Over power protection Range 60W min on nominal AC input c BOP Brown Out protection Condition Pattern Dot pattern Timing 1680x1050 60Hz Brightness Max Contrast Max Spec system shutdown voltage must be 50V system restart voltage must be 85V 3 1 9 Power consumption Max 55W Follow Energy Star V4 condition 49W 3 1 10 Power management BV223W supports Energy Star...

Страница 7: ... standard conditions unless otherwise noted Temperature 25 5 C Test pattern white Video Resolution 1680 x 1050 Video input level 700 mV 2 Warm up time 30 minutes Set brightness control and also contrast control at maximum to measure the screen center the light output shall 250 cd m2 as panel spec 3 4 White balance The test standard conditions refer to Sec 3 3 Brightness control is at 100 contrast ...

Страница 8: ...ominal Frequency 1Hz Sync Polarity Nominal Pixel Clock MHz 640 480 60Hz 31 469 N 59 941 N 25 175 640 480 72Hz 37 861 N 72 809 N 31 500 VGA 640 480 75Hz 37 500 N 75 000 N 31 500 800 600 56Hz 35 156 P 56 250 P 36 000 800 600 60Hz 37 879 P 60 317 P 40 000 800 600 72Hz 48 077 P 72 188 P 50 000 SVGA 800 600 75Hz 46 875 P 75 000 P 49 500 1024 768 60Hz 48 363 N 60 004 N 65 000 1024 768 70Hz 56 476 N 70 0...

Страница 9: ...quency of Power Macintosh and Sun Ultra is a reference value 4 3 Timing requirements The LCD monitor must be capable of displaying standard resolutions within the vertical frequency range of 56 76 Hz and the horizontal scan range of 31 5 84 KHz with maximum pixel clock of 190MHz Vertical Horizontal Sync polarity positive or negative If input signal is out of range of horizontal 31 5 84 KHz or vert...

Страница 10: ...minimum Checking display modes All the specified modes 5 1Panel general specifications A General specifications Supplier InnoLux Model name INL MT190AW01 V 5 Display Area 410 4 H x256 5 V Pixel Pitch 0 285 H x 0 285 V Display Colors 16 7 Million 6 bit HI FRC Number of Pixel 1440x900 pixels Pixel Arrangement RGB vertical stripe Brightness 300cd m2 Typ 250cd m2 Min Contrast Ratio 700 1 Typical Viewi...

Страница 11: ...or to show e Color OSD and press again the OSD can not disappear but the time of e Color OSD disappearing is reset 10 second again B When OSD disappear not including e Color OSD press e Color to show e Color OSD OSD the OSD before disappears but the parameters of it should be saved POWER Power on or power off the monitor 5 3Hot Key Operation HOT KEY OPERATION FUNCTION AUTO e Color MENU POWER FACTO...

Страница 12: ...EMEA EMEA English English Deutsch Deutsch Español Español 简体中文 Hollands 繁體中文 Русский Français Français Italiano Italiano Language 日本語 Suomalainen English Hor Position 0 100 50 Ver Position 0 100 50 OSD OSD Timeout 10 120 20 Analog Digital Input Dual DDCCI ON OFF ON Input Analg only DDCCI ON OFF ON Resolution H Freq V Freq Info S N ET000 0000 22 Reset Exit Notes 1 Clock default 50 is for Visa timin...

Страница 13: ... exe Manufacture of FW IC RTD 2525L 6 2 Operational steps 1 Connection connect PC to PCBA with signal cable and then keep AC and DC in open state 2 Adjust ISP programming Firstly double click ISP_Tool_v3 7 5EXEI and open ISP program then select Device next select manufacturer model of FW IC which should be correspondent with that of PCBA FW IC Double click Figure One FW IC Model One port of ISP pr...

Страница 14: ... LCD B223W 13 Secondly download FW software first select READ and then load FW software in Rooter Fig 2 Thirdly select Connect and enter ISP MODE as in the following Figure 3 Software Checksum FW software rooter ...

Страница 15: ... select AUTO and keep its default value Click RUN for beginning programming There will be prompting if programming is OK Note if programming fails or success rate is not high click Config and adjust its speed in E2PROM DEVICE SETTING ...

Страница 16: ...AC ON DC ON Open ISP program Choose manufacturer and model of FW IC LOAD FW software Click Connect and enter ISP MODE Click AUTO and RUN for beginning programming Turn off power if programming is OK OK OK OK OK OK OK NG Choose Config and adjust programming ...

Страница 17: ...Acer Acer LCD B223W 16 02 Flat Panel Specification ...

Страница 18: ... Contents A General Specification B Electrical Specifications 1 Pin assignment 2 Absolute maximum ratings 3 Electrical characteristics a Typical operating conditions b Display color vs input data signals c Input signal timing d Display position e Backlight driving conditions C Optical specifications D Reliability test items E Safety F Display quality G Handling precaution H Label I Mechanical draw...

Страница 19: ...tion pixel 1680 H X 1050 V WSXGA resolution 2 Active area mm 473 76 H X 296 1 V 3 Screen size inch 22 inches diagonal 4 Pixel pitch mm 0 282 H X 0 282 V 5 Color configuration R G B vertical stripe 6 Overall dimension mm 493 7 W X 320 1 H X 16 5 D typ 7 Weight g 2900 max 8 Surface treatment Anti glare Haze 25 Hard coating 3H 9 Input color signal 8 bit LVDS 10 Display colors 16 7 M 6 bit with Hi FRC...

Страница 20: ...ut Chan 2 Odd 7 VSS Ground 8 RXOC LVDS differential Clock input Odd 9 RXOC LVDS differential Clock input Odd 10 RXinO3 LVDS differential data input Chan 3 Odd 11 RXinO3 LVDS differential data input Chan 3 Odd 12 RXinE0 LVDS differential data input Chan 0 Even 13 RXinE0 LVDS differential data input Chan 0 Even 14 VSS Ground 15 RXinE1 LVDS differential data input Chan 1 Even 16 RXinE1 LVDS different...

Страница 21: ...AGE 6 23 ALL RIGHTS RESERVED ANY PORTION OF THIS DOCUMENT SHALL NOT BE REPRODUCED COPIED OR TRANSFORMED TO ANY OTHER FORMS WITHOUT PRIOR WRITTEN PERMISSION FROM INNOLUX DISPLAY CORPORATION 1 30 1 30 1 30 Rear view of LCM 1 30 ...

Страница 22: ...e relative humidity must not exceed 90 non condensing at temperatures of 40 C or less At temperatures greater than 40 C the wet bulb temperature must not exceed 39 C Note 2 The unit should not be exposed to corrosive chemicals Values Parameter Symbol Min Max Unit Remark Power voltage Vcc 0 3 6 V At 25 C Input signal voltage VLH 0 3 4 3 V At 25 C Operating temperature Top 0 50 C Note 1 Storage temp...

Страница 23: ...V 25 C fv 60Hz frame frequency condition whereas white pattern is displayed Note 3 The specified current is under the Vcc 5V 25 C fv 60Hz frame frequency condition whereas mosaic pattern black white 8 6 is displayed White 255 Gray Black 0 Gray Item Symbol Min Typ Max Unit Remark Input Voltage Vcc 4 5 5 5 5 V Permissive Power Input Ripple VRF 0 25 V Black Icc 900 Note 1 White Icc 700 Note 2 Input C...

Страница 24: ...ion 1 VDD 5 V VDD rising time 470 s 10 2 Pattern Mosaic pattern 3 Test circuit Note 5 LVDS signal definition VIN Positive differential DATA CLK Input VIN Negative differential DATA CLK Input VID VIN VIN VCM VCM VCM VID VID VID VID VIH VIH VID VIL VIL VCM VIN VIN 2 VCM VIH VIH 2 VCM VIL VIL 2 90 Ton 470 s 10 VDD M2 M1 1K C3 47K R1 C1 5 V 12V VDD LCD INPUT CONTROL SIGNAL HIGH to LOW 2SK1399 2SK1059 ...

Страница 25: ...LL NOT BE REPRODUCED COPIED OR TRANSFORMED TO ANY OTHER FORMS WITHOUT PRIOR WRITTEN PERMISSION FROM INNOLUX DISPLAY CORPORATION Note 6 Power on sequence for LCD VDD Parameter Value Unit Min Typ Max ms T1 0 1 10 ms T2 0 50 ms T3 200 250 ms T4 100 250 ms T5 0 20 50 ms T6 0 1 ms T7 1000 ms ...

Страница 26: ... 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Green 0 0 0 0 0 0 Blue 000 dark Blue 001 Blue 002 Blue 253 Blue 254 Blue 255 bright 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Blue 0 1 0 0 0 1 1 1 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 G7 G6 G5 G4 G3 G2 G1 G0 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 ...

Страница 27: ...Typ Max Unit period 12 2 16 8 17 9 nS Clock Dclk frequency 56 59 6 82 MHz TV_TOTAL V total line number 1059 1080 1100 TH TV_DATA Data duration 1050 1050 1050 TH TVB V blank 9 30 50 TH Vertical fV frequency 56 60 76 Hz TH_TOTAL H total pixel number 890 920 1004 DClk TH_DATA Data duration 840 840 840 DClk Horizontal THB H blank 73 80 164 DClk Note Because this module is operated by DE only mode Hsyn...

Страница 28: ...e waveform of the voltage output of inverter must be area symmetric and the design of the inverter must have specifications for the modularized lamp The performance of the Backlight such as lifetime or brightness is greatly influenced by the characteristics of the DC AC inverter for the lamp All the parameters of an inverter should be carefully designed to avoid producing too much current leakage ...

Страница 29: ...e completely turned on Note 5 Lamp frequency may produce interference with horizontal synchronous frequency and this may cause line flow on the display Therefore lamp frequency shall be detached from the horizontal synchronous frequency and its harmonics as far as possible in order to avoid interference Note 6 Lamp life definition The brightness of lamp becomes 50 of the initial brightness or not ...

Страница 30: ...80 85 89 deg Note 3 5 7 Brightness Center YL 250 300 nit Note 3 6 Wx 0 313 Wy 0 329 Rx 0 640 Ry 0 349 Gx 0 284 Gy 0 617 Bx 0 142 Color chromaticity CIE By 0 0 03 0 067 0 03 Note 3 White uniformity 9 points δw 0 75 0 80 Note 3 8 Cross talk Ct 2 Note 9 Note 1 Ambient temperature 25 C Note 2 To be measured in dark room after backlight warm up 30 minutes Note 3 To be measured with a viewing cone of 2 ...

Страница 31: ...trast ratio is calculated by the following formula Note 6 Driving conditions for CCFL IL 7mA 50 KHz Frequency Note 7 Definition of viewing angle Note 8 Definition white uniformity Luminance are measured at the following nine points P1 P9 Signal Relative value Black Tr Tf White White 0 10 90 100 Contrast ratio CR Brightness on the white state Brightness on the black state W Minimum Brightness of ni...

Страница 32: ...SSION FROM INNOLUX DISPLAY CORPORATION Field 2 50cm Photo detector BM 5A LCD Panel Note 9 l LA LA l LA x 100 2 max LA and LA are brightness at location A and A l LB LB l LB x 100 2 max LB and LB are brightness at location B and B Note 10 Optical characteristic measurement setup 0 gray level 1 2 1 2 1 6 1 6 A B 1 2 1 2 1 6 1 6 2 3 1 3 1 3 2 3 A B 127 gray level 127 gray level ...

Страница 33: ... 150pF 330ohms 25 times 1 point 1 time 1 sec Air discharge 15kV 150pF 330ohms 25 times 1 point 1 time 1 sec Note 1 Note 2 Vibration non operation Vibration level 1 5G Bandwidth 10 300Hz Waveform sine wave sweep rate 10min 30 min for each direction X Y Z 1 5 Hrs in total Note 1 Note 2 Mechanical Shock non operation Shock level 50G 11ms Waveform Half sine wave Direction X Y Z One time each direction...

Страница 34: ... Flammability All components including electrical components that do not meet the flammability grade UL94 V1 in the module will complete the flammability rating exception approval process The printed circuit board will be made from material rated 94 V1 or better The actual UL flammability rating will be printed on the printed circuit board c Capacitors If any polarized capacitors are used in the d...

Страница 35: ...Remark 1 509146306102R SCREW P CROSS W W SPR M3 6 Zn 2 3 75 0 25 FOR POWER 2 509000000700R BOLT 4 40x11 8 Ni 4 4 0 0 25 D SUB CON DVI 3 50911661210 2R SCREW P CROSS M4 12 BLK Zn RO HS NYLOK 4 10 5 0 25 For back cover to STAND ASSY 4 509146306200R SCREW P CROSS W WAS M3 6 ZN Cc 5 3 75 0 25 FOR POWER IF ...

Страница 36: ...Acer Acer LCD B223W 18 3 2 LCD Exploded drawing All ...

Страница 37: ...823 R824 Change R822 R823 R824 Check the R pin voltage of IC803 about 2 5V Check R819 R820 Check R818 D804 C807 if short Change R818 D804 C807 Check pin2 of IC802 voltage is 3V Check pin1 of IC802 voltage below 1V Change R808 R 809 R810 R 811 R815 R814 Q803 END Check the C pin voltage of IC803 if 3V Change IC803 ...

Страница 38: ... ig h lev el vo ltag e o n pin 1 0 o f IC 5 0 1 N o C h eck I F B D V se nse vo ltage is 2 9 V Y es Y es L am p co n n ecto r o p en ed A re there PW M sign al on p in 1 pin 1 5 o f IC 5 0 1 N o N o IC 50 1 failu re Pin 5 o f IC 5 0 1 v o ltag e is L ow leve l Y es Feed ba ck circu it failu re Y es Y es C he ck C 5 2 4 R 5 28 R 5 3 3 D 5 07 N O Pin 3 o f IC 50 1 vo ltage is h igh lev el v o lta ge...

Страница 39: ... in 1 2 7 1 2 8 w a v e fo rm o f U 1 0 5 C h e c k re s e t p in 1 0 8 o f U 1 0 4 C h e c k p o w e r s u p p ly fo r U 1 0 4 C h e c k p o w e r s u p p ly p in 1 2 o f C N 1 0 1 C h e c k R 1 1 1 Q 1 0 6 R 1 1 2 R 1 4 7 R 1 4 8 In v e rte r F a il C h e c k X 1 0 1 C 1 5 0 C 1 5 2 C h e c k C 1 5 1 R 1 6 5 C h e c k F B 1 0 2 F B 1 0 3 P o w e r fa il N G N G N G N G N G N G O K O K O K O K O ...

Страница 40: ...ss pin 109 125 of U104 Check crystal pin 127 128 waveform of U105 Check reset pin108 of U104 Check power supply for U104 Check power supply pin 1 2 of CN101 Check R111 Q106 R112 R147 R148 Inverter Fail Check X101 C150 C152 Check C151 R165 Check FB102 FB103 Power fail NG NG NG NG NG NG YES YES YES YES YES YES ...

Страница 41: ...END White screen Check LVDS signal Check Q101 Q103 Q104 R108 R104 C110 C 108 Check Panel Enable of U104 pin73 Check VLCD is 5V Change LVDSCable LVDS Cable Reinsert Workmanship Panel Fail LVDS cable NG U104 Fail OK OK OK OK OK NG NG NG NG NG ...

Страница 42: ...Check C705 C707 Check Pin3 Pin10 of U701 Check pin7 pin8 of CN101 Pin13 of U701 Pin1 pin2 of P701 No sound signal input Check R141 R142 R157 R 158 of IF board Check 16V Power supply U701 Fail NG NG OK OK OK OK NG NG NG Check Q701 Q702 Q703 Q 704 R701 R702 OK ...

Страница 43: ...1 453010100380R CABLE D SUB 15P MALE 6FT BLACK BLUE ROH 1 453030300120R CABLE AUDIO 1P 6FT BLACK GREEN CP03B06P0 1 430300801700R HRN ASSY 2x4P 100mm UL1571 28 ROHS 1 430300801690R HRN ASSY 2x4P to 8P 245mm UL1571 28 ROHS 1 430303001510R HRN LVDS FFC 30P 228mm W TASTE ROHS 1 714011202700R ASSY STAND B223W LE22D2 1 714030015520R ASSY BEZEL FRONT black B223W LE22D2 1 714050014231R ASSY COVER BACK W D...

Страница 44: ...Acer Acer LCD B223W 26 06 Schematics and Layouts 6 1 PI BD Layout ...

Страница 45: ...Acer Acer LCD B223W 27 6 2 IF BD Layout ...

Страница 46: ...3 R822 15K4 1 R818 100K 1 R810 3M C817 1000u 25V R809 3M C816 1000p 500V R830 200 Q801 2PC1815GR 1 3 2 L801 20mH 4 1 3 2 T801 SPW 100 1 2 3 5 4 10 8 9 7 6 R811 3M R802 330K C820 1000u 10V C807 10u 35V C804 150u 450V C809 10u 35V C815 1000p 500V FB801 120Ω 3A R832 470Ω 1 C808 100p 1KV IC801 LTV817M 3 1 4 2 C824 470u 16V CN801 12P 2 0mm 1 2 3 4 5 6 7 8 9 11 10 12 R826 NC RT801 NTC 5R C803 0 47 275V ...

Страница 47: ...D502 BAV99 1 2 3 D506 BAT54 3 2 1 C530 2200p 50V C516 1000p 50V C505 1000p 50V D504 BAV99 1 2 3 D508 BAV99 1 2 3 D507 BAV99 1 2 3 C514 4700p 50V C523 12p 3KV C511 0 047 25V R531 2K 1 R535 33 R527 910 C527 4700p 50V C515 2 2u 16V R541 8 2K 1 R532 33 R525 1M5 3KV R505 33 IC501 INL837 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DRV1 VDDA DIM ISEN PID RSTR RT ENA VSEN OVPT LCT SSTCMP CT TIMER GNDA DRV2 D51...

Страница 48: ...S OUTL Q702 PMBT3904 1 3 2 P702 NC ST 510 4a 2 13a 12 1 12a 3 4 13 13a R702 10K R714 30K C702 220u 25V R733 220 NC R724 20K U702 FSA2257 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1A GND 1B0 2A GND 2B0 NC VCC 1S 1B1 VCC 2S 2B1 NC C708 470u 16V C720 100u 16V D702 ESD 1 2 C710 4700p 50V C709 0 1 50V R703 10K R705 30K R725 20K C714 10u 16V R706 1K C718 1u 16V R710 10K C716 0 1 16V FB702 FERR BEAD R723 20K R734...

Страница 49: ...o Keypad 2x4p 2 0mm 180degree 4 MENU 6 8 4 CON CN302 RIGHT Left 2x4p 2 0mm 90degree GND 5 1 3 4 3 5 8 8 Auto Pin Define 1x8p 1 25mm180degree 8 KEYPD CON LED_A V01 5 5 A doc Connector_ BV223W 2007 12 12 InnoLux Document Number SIZE TITLE DATE SHEET OF Rev DRAWN BY CHECK BY APPRO BY CN301 2x4P 2 0mm 1 2 3 4 5 6 7 8 CN302 2x4P 2 0mm 1 2 3 4 5 6 7 8 ...

Страница 50: ...rd and place the surface of panel downsides on the cushion 631102220091R LCP 22 MT220WW0 1 V0 G1 AM2200001 001 INNO S2 Insert Keypay s wrie 1 Check if the keypad and relevent wire you choose are OK 2 Insert the wire into the keypad like the Picture 430300801690R HRN ASSY 2x4P to 8P 245mm UL1571 28 RO HS S3 Fix front bezel 1 Check if there is any lacquer missed or sctratch happened to the front bez...

Страница 51: ... panel completely Remark Make sure the fixed job is finished properly and lamp wire is closer to right hand Make the tinfoil smooth in the corner of panel 714030015400R ASSY BEZEL F RONT silver LE 22D3 S5 Fix mainboar d 1 Insert FFC wire into its relevant interface of mainboard properly like attached picture1 2 Insert the short keypad into its relevant interface like picture1 2 Put the fixed mainb...

Страница 52: ...tion of chassis like the attached Picture 791411401600R PCBA P I BOARD W O SPK LE22D2 612 ROHS S8 Connect mainboar d powerb oard Connent powerboard with the relevant PIN in the mainboard like the attached Picture S9 Twist PCBA screw Handle electric opener and one pcs of M3 6 screw 509146306200R SCREW P CRO SS W WAS M3 6 Zn Cc ...

Страница 53: ...1 509146306200R SCREW P CRO SS W WAS M3 6 Zn Cc S11 Twist screw for ground wire Paste FFC wire on the disignated location like the attached Picture S12 Twist Hexagonal screws 1 Handle hexagonal screws and electric opener 2 Twist screw in the interface like the attached Picture1 3 Place cushion on the designated location after iron frame is taken away 2 3 4 2 1 3 4 ...

Страница 54: ...l and front bezel 2 Put lamp wire and FFC wire in order as picture S15 Insert FFC cable 1 Tear off the adhensive tape of FFC wire 2 Insert FFC wire into the interface of panel 3 Put FFC wire in order and paste them on the panel 4 Fix chassis on the back of panel S16 Insert light wire 1 Insert 4pcs light wire into the relevant position 2 put the balance light wire to the position as picture 4 3 1 2...

Страница 55: ...he keypad 2 Fix button on the relevant position of assemble 3 Confirm if keypad is inserted properly and make sure the red cable in left S18 Fix back cover Check if back cover is fixed properly S19 Fix stand Use 4pcs screw fix stand on the back of assemble like attached Picture 3 3 2 2 1 1 make sure the red cabel in left 1 2 3 4 ...

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