Page 2 - Go to cover page
Product Anouncement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modificati...
Page 3 - MONITOR SPECIFICATIONS
1 . 1 S C O P E This document defines the design and performance requirements for a 24W inch diagonal , flat panel monitor .The display element shall be a WUXGA (1920x1200) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M color(RGB Hi+FRC) images are displayed on the panel.Vide...
Page 5 - Full Power; Table 1; Auto; Description
1.3.2.6 Abnormal Signal Immunity The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or abnormal input signal amplitude ( video and/ or sync too large or too small) , or any other anomalous behavior of a graphics card video generator when changing modes ,...
Page 8 - Table 3 gives the descriptive terms used in classifying; Average Diameter smaller of; Non countable
1.4.5.5 Defect Terminology Table 3 gives the descriptive terms used in classifying defects. 1 . 5 O p t i c a l C h a r a c t e r i s t i c s Depends on the LCD supplier's spec. Details refer to QA Inspection Spec. 1.4.5.6 Smudges, Streaks and Smears When viewing the panel oriented so as to maximize...
Page 11 - . 1 P a c k i n g E x p l o d e d D i a g r a m
3 . 1 P a c k i n g E x p l o d e d D i a g r a m 3. Exploded Diagram 10 Go to cover page ACER G24
Page 12 - . 2 P r o d u c t E x p l o d e d D i a g r a m
3 . 2 P r o d u c t E x p l o d e d D i a g r a m 3. Exploded Diagram (continued) 11 Go to cover page ACER G24
Page 15 - Put a ear over n he ssembled nit nd; o t; Take a key function board to hook with front; screwdriver
Assemble the stand upper side to the rear cover t h r o u g h t h e w a y o f s c r e w i n g 4 s c r e w s t i l l b o t h u n i t s f i r m l y a t t a c h e d . ( N o 1 ~ 4 S c r e w S i z e = M 4 x 1 0 ; To r q u e = 1 3 K G F x C M ) . 1 Put a ear over n he ssembled nit nd ress on force echanis...
Page 16 - FEATURE LABEL
Move previous assembled parts into the carton then stick Vista and feature label on the carton then packing the carton Put accessories of stand, DVI cable, and u s e r ’ s m a n u a l , p o w e r c a b l e o n s p e c i f i c p o s i t i o n s a s p h o t o b e l o w . Take two cushion foams; one is...
Page 17 - PUT CABLE IN THIS POSITION
Use a Phillips-head screwdriver unscrew 4 screws to release the stand base. (No1~4 Screw Size=M4x10; Torque=13 KGFxCM). ±1 Disassemble the stand cover. P ut returned unit on a protective cushion,then remove LDPE+EPE bag. Tear off tapes to remove the screen protector card then turn over the LCD monit...
Page 18 - DOWN; UP; edge your finger between the front bezel and
Put the dissembled monitor closed to by myself Unhook the key function board from front bezel, disconnect the key function cable S8 S10 S9 4. Assembly and Disassembly Procedures (continued) S11 DOWN SIDE LEFT SIDE RIGHT SIDE UP SIDE W edge your finger between the front bezel and the panel, then pry ...
Page 23 - . 3 C h e c k t h e b a c k l i g h t u n i t; Check the BKLT_EN signal of
5. Troubleshooting (continued) 5 . 3 C h e c k t h e b a c k l i g h t u n i t Check the BKLT_EN signal of rectangle input P301 pin11 at TTL high level. Check the PWM signal supplied from I314 pin251 is a PWM, pulse-width modulation. OK Does the I306 pin16 output a TTLvoltage level at “H” status? &l...
Page 25 - . 5 A b n o r m a l O S M d i s p l a y - O S D A d j u s m e n t P r o b l e m
5. Troubleshooting (continued) 5 . 5 A b n o r m a l O S M d i s p l a y - O S D A d j u s m e n t P r o b l e m Check the input TTL level whether if it was altered upon pressing the function keys. OK Failure Point 1. Printed wire is broken between P303 pin 2 and I306 pin 87.2. Printed wire is broke...
Page 26 - . 6 A b n o r m a l P l u g a n d P l a y O p e r a t i o n
5. Troubleshooting (continued) 5 . 6 A b n o r m a l P l u g a n d P l a y O p e r a t i o n 5 . 6 . 1 A b n o r m a l D D C 2 ( D - S U B ) 5 . 6 . 2 A b n o r m a l D D C 2 ( D V I ) Confirm the output of serial data on I312 pin6 synchronize SCLK at TTL level OK Failure Point I312 is defected NG F...
Page 27 - Check the horizontal
5. Troubleshooting (continued) 5 . 7 C h e c k i n g t h e i n t e r f a c e c i r c u i t o f s y n c s i g n a l 5 . 7 . 1 C h e c k i n g t h e c o n t r o l c i r c u i t o f h o r i z o n t a l s y n c p u l s e 5 . 7 . 2 C h e c k i n g t h e c o n t r o l c i r c u i t o f v e r t i c a l s y...
Page 28 - . 8 C h e c k i n g t h e r e s o l u t i o n c h a n g e I C m o v e m e n t; and pin36 at TTL level
5 . 8 C h e c k i n g t h e r e s o l u t i o n c h a n g e I C m o v e m e n t Is there +3.3V Supplied on I314 pin107, pin48, pin61, pin250, pin12, pin70, pin170, pin184, pin203, pin216, pin236, pin252, pin20, pin28, pin38, pin19, pin37, pin131? Is there +1.8V supplied on I314 pin16, pin22, pin50, ...
Page 29 - . 9 C h e c k i n g t h e D C / D C c o n v e r t e r c i r c u i t; Check if the 5V is output
5 . 9 C h e c k i n g t h e D C / D C c o n v e r t e r c i r c u i t Check if the 5V is output from P301 pin1, pin2, pin3, pin4 to I301, I303, I320 pin3. Check if the 3.3V, 2.5V and 1.8V line voltage is output from I301, I302, I303 pin2 OK Failure Point Printed wire is broken betweenP301 pin1, pin2...
Page 30 - . 1 0 C h e c k i n g t h e i n v e r t e r b o a r d c i r c u i t
5 . 1 0 C h e c k i n g t h e i n v e r t e r b o a r d c i r c u i t D o e s 2 2 V o u tp u t p in h a v e v o lta g e a ro u n d 2 0 V ? D o e s O n /O ff p in h a v e v o lta g e o v e r 3 V ? D o e s b rig h tn e s s p in h a v e v o lta g e in th e ra n g e o f 0 V ~ 3 .2 V ? D o e s I1 0 1 p i...
Page 31 - OK; if there’s no; NG; . 11 H D M I s i g n a l c h e c k
Check the TMDS signal from computer input on HDMI connector Check the TMDS signal of I322 OK 1.Check the host PC to see if there’s no TMDS signal output2.HDMI cabled disconnected. Reconnect thecable till firmly connected3.P311 is disconnected. Reconnect the cabletill firmly connected Failure Point N...
Page 34 - cedid; Writing EDID Process
PRINTER PLUG DVI EXTENDING SOCKET USB A PLUG D-SUB PLUG DVI EXTENDING SOCKET USB A SOCKET 1 Writing EDID ProcedureHardware Configuration:1.)Connect the PRINTER PLUG of DDC FIXTURE with the printer port of Desktop PC. (Refer to figure 1) 2.)Plug USB A PLUG of DDC FIXTURE to USB socket of Desktop PC (...
Page 36 - PCB; ACER
8.Schematics and Layouts _ 8.1 SCHEMA TICS BLOCK DIAGRAM ACER_LCD_G24_ PCB No. Analog Video Input DSUB Scaler MST 9259D Function Key Board DDC 24LC02B DC DC - 5v 33v -. 33 v18 v .- . Power Board AC 110 220v/ Input LVDS I314 +5 V P301 I320 I326 I312 P304 Brightness Inv On Off ,_ / P306 D SUB SCL __ D...
Page 37 - Go
_ 8.2 SCHEMA TICS POWER BOARD ACER_LCD_G24_ PCB No. 6832194100P01 24V 24V GND GND 20 . GND TOINV ONOFF - 24V GND BRI 52V . 5VRTN - 52V . BRI 52V . GND 52V . 52V . GND ONOFF - GND OFF 20 . CUT CUT CUT 24V 52V . VDD FBPWM VBUS1 V AUX V AUX VDD 24V FBPWM VA VA 52 V . VBUS VBUS1 VBUS R845 510K R1206 + C...
Page 38 - FOR
8.3 ACER _ _LCD_G24 SCHEMA TICS_INTERF ACE_BD_POWER 6832194600P0 PCB No. SOT 223- TO 263- TO 252 GOI -- TO 263- HI POWER ON ==> SOT 223- FOR POWER SAVING CONTROL AUDIO EN _ AUDIO DET _ +. 51 V BKLT EN _ +. 51 V +. 51 V GND BKLT ADJ _ GND GND 5V RTN _ OFF +. 51 V VCC LCD2 _ AUDIO DET _3 BKLT ADJ _...
Page 40 - DSUB; NC
_ 8.5 INTERF ACE_BD_ ACER_LCD_G24 SCHEMA TICS_ VGA INPUT PCB No. DSUB Connector VGA RX _ VGA TX _ DDC WP _ +_ 5V VGA +_ 5V VGA BLUE GREEN RED DSUB SCL- DSUB SDA- VGA TX _ VGA RX _ HSYNC VSYNC DSUB SCL- DSUB SDA- WP EN _3 SOG 6 DSUB DET _3 BIN0P 6 BIN0M 6 GIN0P 6 GIN0M 6 RIN0P 6 RIN0M 6 VGA SCL _3 HS...
Page 41 - GND
_ 8.6 INTERF ACE_BD_HDMI AND DVI INPUT ACER_LCD_G24 SCHEMA TICS_ PCB No. DVI HDMI SW 1 the voltage __ = , level must 33V 2V <= . & > 0DVI INPUT 1HDMI INPUT :, : DVI Connector P S GND GNDA must be connected .. , . HDMI RX2 _+ HDMI RX1 _- DDC WP _ DDC WP _ DDC SCL D __ HDMI RX1 _+ DVI RX2 _-...
Page 45 - AGND; PH
_ 8.10 SCHEMA TICS INTERFACE BD _AUDIO LINE OUT ACER_LCD_G24 _ PCB No. HDMI AUDIO CODEC deleted for ( P243W HDMI model) HDMI LEFT _ HDMI RIGHT _ AUWS 6 AUSD 6 AUSCK 6 AUMCK 6 GND VS +5V TP519 C512 33u 50V ./ D348 X100MV05 2 1 TP525 TP528 C513 33u 50V ./ C505 100u 10V/ I324 CS4344 6 1 3 8 2 4 5 7 10 ...
Page 47 - LEDORANGE; Menu
_ 8.12 SCHEMA TICS FUNCTION _KEY ACER_LCD_G24 _ PCB No. 6832194800P0 LEDORANGE LEDBLUE Menu KEY POWER MENU E MINUS SELECT PLUS LED AMBER _ LED BLUE _ C606 0 1u . S605 Auto exit / C603 0 1u . S602 Right R606 240 C604 0 1u . C601 0 1u . S603 Left R605 200 S606 E C605 0 1u . S604 Menu S601 Power C602 0...
Page 48 - BOARD
8.13 ACER_LCD_G24 LAYOUTS_POWER BOARD _ POWER BOARD - BOTTOM SILK POWER BOARD - TOP SILK 12 34 56 7 8 9 1 0 11 1 2 1 3 12 34 56 7 8 9 1 0 11 1 2 1 3 A B C D E F G A B C D E F G PCB No. Go tocover page 47 ACER G24
