Acer B193R manuale d’uso

1 Acer B193R Service Guide[...]

2 Service Guide V ersion and Revision Version Release Date Revision History TPV model A00 Mar .-24-2008 Initial Release T97HNAD8K3ABHN/ T97HNAD8K3ABDN[...]

3 Copyright Copyright © 2003 by Acer Incorpo rated. All rights rese rved. No part of this publi cation may be reproduced, Transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, m echanical, m agnetic, optical, chemical, manual or otherwise, without the [...]

4 Preface Before using this information and the produ ct it supp orts, please read the following gene ral information. 1. This Service Guide provides you wi th all technical information relati ng to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and e nhan ce product comp[...]

5 Precautions z Do not use the monitor near water , e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. z Do not place the monitor on an unsta ble trolley , sta nd, or table. I f the monitor falls, it can injure a person and cause serious damage to the appliance. Use only a trolley or st and recommended by [...]

6 T able Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirement s ……………………………………… 8 LCD Monitor General S pecification ……………………………………… 9 LCD Panel S pecification ………[...]

7 Monitor Features Introduction Scope This specification defines the requirements for the 19” MICROPROCESSOR based Multi-mode supported high resolution color LCD monit or . This monitor can be directly connecte d to general 15-pin D-sub V GA connector and 24 pin DVI connector , also supports VESA DPMS power management and plug & play function[...]

8 Electrical Requirement s Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. Ambient light Dark room (< 1 cd/m2) Viewing distance 40 cm for LCD performance, 20 cm for L CD failures Warm up time ＞ 30 minutes Analog Input signal 700 mVss Control temperature 6500 ° K Brightness c[...]

9 LCD Monitor General Specification Driving system TFT Col or LCD Active Display Area 376.32 (H) x301.056 (V) Pixel pitch 0.294(H) x 0.294(V) Contrast Ratio 1000 : 1 Response ti me 5ms LCD Panel Luminance of White 300(T yp.) cd/ ㎡ Separate Sync. H/V TTL H-Frequency 30kHz – 80kHz Input V -Frequency 55-75Hz Viewing angle (H)170 (V) 160(T ype) Dis[...]

10 LCD Panel Specification General Specifications Mechanical Information Electrical Characteristics[...]

11 Optical Specifications[...]

12 Support Timing[...]

13 Monitor Block Diagram The LCD MONIT OR will contain a main board, a power board, and key bo ard which house the flat p anel control logic, brightness control logic and DDC. The power board will prov ide AC to DC Inverter voltage to drive the backlight of p anel and the main board chips each voltage. Inverter Board (include adapter) Flat Panel an[...]

14 Main Board Diagram U203 Scalar IC NT68665MFG-1 28 (Include MCU ,ADC, OSD) · D-Sub Connecto r (CN101) H sync V sync RGB LCD Interface (CN402) Key Board Control CN407 Crystal (X201) 12MHz DVI Connecto r (CN102)[...]

15 Softwar e Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18[...]

16 Remark: 1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUT O and SELECT key s pressed? 8) Enter factory mode. 9) Save the power key status into EEPROM. T urn on the LED and set it to green color[...]

17 Main Board Layout Symbol Description Symbol Description CN407 W AFER CN102 DVI 24PIN CONNECTOR CN301 W AFER 9P RIGHT ANELE PITCH U203 IC NT68665MFG-128 QFP-128L CN402 CONNECTOR U301 IC AP1117D33LA TO252-3L ATC CN101 D-SUB 15PIN U304 IC AP1117E18LA SOT223-3L ANACHIP U204 IC AF24BC16-SI 16K SOIC-8[...]

18 Installation To install the monitor on your host system, please follow the ste ps below: Steps 1.Connect the video cable A: Make sure both the monito r and computer are switched off. B: Connect the VGA video cable to the computer. C: Connect the digital cable (only for dual-input mo dels). (1) Make sure both t he monitor and computer are swit ch[...]

19 Attaching/Removing The Base Install: Align the base with the stand and push the b ase towards the top of the monitor, and then rotate the base clockwise. Tighten the screw clockwise. Remove: Reverse the steps to remove the base. Screen Position Adjustment In order to optimize the best viewing po sition, you can adjust the height/tilt/swivel/pivo[...]

20 Tilt Please see the illustration below for an example of the tilt range. Sw iv el With the built-in pedestal, you can swivel the m onitor for the most comfortabl e viewing angle. Monitor Pivot Adjust height to the top position before rotation the moni tor. Rotate clockwi se until the monitor stops at 90°.[...]

21 O p e r a t i n g I n s t r u c t i o n s Press the power button to turn the monitor on o r of f. The other control buttons are locate d at front panel of the monitor . By changing these settings, the picture can be adju sted to your personal preference s. • The power cord should b e connected. • Connect the video cable from the monitor to t[...]

22 eColor Management (OSD)[...]

23 How to Adjust a Setting[...]

24 Adjusting the picture[...]

25[...]

26 Logo When the monitor is power on, the LOG O will be showed in the center , and disappear slowly . How T o Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feat ure This monitor is equipped with VESA DDC2B capabilities accordi ng to the VESA DDC ST ANDARD. It allows the monitor to inform the host system of its identity and, depending o [...]

27 Machine Disassembl y This chapter contains step-by-step pro cedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the HINGE ASSEMBL Y as the followi ng indicator . (Fig 1) Fig 1 2. Remove the back cover and bezel. (Fig 2) Fig 2 Chapter 3[...]

28 3. Remove the lamp connect ors and the screw . (Fig 3) Fig 3 4. Remove the screws to remove the panel. Pay attention to the L VDS cable.(Fig 4-5) Fig 4 Fig 5[...]

29 5. Remove the screws to remove t he main board and power board.( Fig 6) Fig 6[...]

30 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the B193R: 1. No Power Cha p ter 4 No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the power section Check if X201 oscillate waveforms are normal Measure U301 Pin2=3.3V , U304 [...]

31 2. No Picture (LED is orange) No picture The button if under control X201 oscillate waveform is normal Replace U203 Replace X201 Measure U301 Pin2=3.3V , U304 Pin2=1.8V Check Corre spondent component Replace U203 Check X201 oscillate waveform is normal Replace U301, U302 OK OK OK OK OK NG NG NG NG Check reset c ircuit of U203 is normal Check HS/[...]

32 3. Panel Power Circuit White screen Measure Q301 base is high level? X201 oscillate waveform is normal Check CN402 is solder and Q301, Q302 is OK? Check Correspondent component. Replace P ANEL Check Correspondent component. Replace U203 OK OK OK Replace X201 OK NG NG NG NG Check reset c ircuit of U203 is normal[...]

33 4. Key Board OSD is unst able or not working Is Key Pad Board connecting normally? Connect Key Board Is Button Switch normally? Replace Button Switch Y NG NG Is Key Pad Board normally? Replace Key Board Y NG Y Check Main Board[...]

34 5. Power Board No power Check to CN902 Pin10,1 1 =14V and Pin6,7 = 5 V OK Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC9 01 Check the voltage of C9 05(+) Check bridge retified circui t Check sta rt voltage for the Pin2 of IC901 Chan g e IC901 OK Check the auxiliary volt age is smaller than 20V OK NG No [...]

35 W/LED No Backlight Check the 14V volt age input Check the adapter Check ON/OFF sign al Check Interface board Check IC801 pin12=1 2V? Change Q805.Q808 or Q8 10 Check the pin9&10 of IC801 have PWM wave Change Q801/Q804/Q81 1/Q812 Re p lace IC801 Check the resonant wav e of pin3 & pin7 for T801 Check the output of T801, T802 Check Q8 02/Q80[...]

36 Connector Information The following figure shows the connector loc ations on the monitor: D-SUB connector Cha p ter 5[...]

37 DVI Connector[...]

38 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) listing in global configurations of B193R.Refer to this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation). NOTE: Please note WHEN ORDERING FRU PARTS, that y ou sho uld check the most up-to-date informatio n avail[...]

39 Part List Above picture show the description of the followin g component. Item Picture Description 1 HINGE ASSEMBL Y 2 MAIN FRAME 3 Panel[...]

40 4 Power Board 5 Main Board 6 FFC CABLE[...]

41 S c h e m a t i c D i a g r a m Main Board R12 7 100R 1/16W 120 D10 8 BAV99 3 1 2 070722 Change to 10Kohm +5V_ESD DDC_WP 3 CN10 1 DB1 5 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 17 16 C12 3 1000pF RX 0P R439 NC DDCSCL C11 1 0.1uF 16V DVI_ SCL 3 RX 2M R10 2 1K 1/16W NC CN403,R220 , FB403 NC CN102 NC VOLUME CON . CN406(6PIN )+USB CONT ROL: R437 0,R438 0[...]

42 MC U _VD D PANEL_I DX 4 CN202 NC/4PIN 2.0 mm CONN 1 2 3 4 DDC_WP 2 T3M 5 TX 0.1u SMT TYPE M CU_VDD 1 H_S CL C201 0.1uF 16V R232 N C/ 0R05 1/ 16W CVDD 18 AVCC GIN + 2 TCLK 1P 5 HSO 1 SOG 2 T3P 5 SMT TYPE 4 R219 NC/4.7K BRI GHTNESS 4,5 RX 0- 2 OPTION(HDCP) R218 R214 4K7 1/16W R211 0R05 1/ 16W LIGHT_SEN 5 24C16_WP ADC_VAA C216 0.1uF 16V C212 +5V T6[...]

43 + C302 10uF/ 16V 070617 CHANGE +5V C303 0.1uF 16V BRIG HT NES S 3,5 C311 0.1uF 16V R314 4K7 1/16W R311 1K 1/16W U303 NC / LD 1117S33 3 2 1 VI VO GND C304 1uF 16V +5V Q302 AO3401 +5V +3. 3 VC C PANEL_VC C FB303 120 　 R308 4K7 1/ 16W R304 10K 1/16W Q305 2N3904S-R TK/PS R309 100R 1/ 16W U301 AP1117D33LA 1 2 3 ADJ( GND) VOUT VI N + C315 100uF/ 16V[...]

44 R410 100R 1/ 16W OPTION(AUD IO CONTRO L) AUD I O_ST D BY 3 T4 P 3 CN40 5 NC/CO NN 1 2 3 4 5 6 7 R432 0R05 1/ 16W T0P T3M TCLK2M T5P 170P8 Change R418 to 33 0 to reduce the LED lumina nce for acer request. KEY _PW R 3 LED_O POW ER POW ER R43 6 NC / 0R 05 1/ 10W 5% R43 7 NC F B403 NC 1 2 R404 0R05 1/ 16W T4 M 3 KEY 2_PAD +5V->+3.3VCC LF_B R403 [...]

45 Power board ! +5V CN90 2 HARNE SS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R907 NC C930 0.1 uF MU TE R96 2 100 OH M 1/4W - + BD901 2KBP08M 2 1 3 4 L904 1.1 uH ! ! R938 10K 1/ 8W ZD9 0 1 NC 1 2 ! R925 1K 1/8W HS3 H EAT SIN K(Q90 1) 1 2 + C915 470uF /16V D91 6 LL4148 T9 01 POW ER X ' F MR 4 5 6 7 8 9 10 11 12 4 6 1 3 D905 SP1060 1 2 3 R927 3. 6K OHM [...]

46 R83 5 1M 1/10W 5% C8 45 2.2uF /16V D80 6 LL4148 R81 9 3.6K OH M 1% 1 /10W Q810 RK7002 R80 9 1K 1/10W 1% R8 20 47K 1/ 10W C801 5pF/ 6KV D8 10 NC DIM R81 2 1K 1/10W 1% R811 2.4K OH M 1% 1/10W R85 0 10 OH M 1/8W R85 5 15 OHM 1/4W R8 37 47K 1/8W R84 1 68K OHM 1% 1/10W C83 9 1500pF Q804 PMBS3906 1 2 3 R808 10K 1/10W 1% C82 1 0.1uF/ 25V D81 4 LL4148 C[...]

47 R 608 0R 05 1/ 8W LOU T - C 617 0. 47uF / 16V change R601 R613 +5V_Audio C N 602 PH ON EJ AC K 1 2 3 5 4 R 605 10K 1/ 10W 5% R 613 330 OH M +-5% 1/10W R 617 1K 1/ 10W 5% CN604 ㎝ CN603 Layout 　 U 601 EU A6021AI I T1 56G 616 40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PGN D RO UT - PVD D RIN+ RIN- VD D LI N - LI N + PVD D LOU T - PGN[...]

48 Key board L ED_ RED# C 006 NC EC OLOR ECOLOR VOL+ R 001 2K OH M 1/ 16W ECOLOR C 008 NC (GND) LBAD C 1 LED C0 05 NC C N 001 CO NN 1 2 3 4 5 6 C0 07 NC AUTO L ED_ RED# POW ER _Key C 002 NC LED 001 LED 3 4 1 2 MENU 0 V C 001 NC POW ER _Key LBADC2 VOL+ LBAD C 2 C 003 NC MENU CONNECTOR (GND) VOL- C0 04 NC AUTO R0 03 1K 1/ 16W 5% L ED_ BL UE# L ED_ BL[...]