Acer X233H manual

1 Acer X233H Service Guide[...]

2 Service Guide V ersion and Revision Version Release Date Revision History Customer model TPV model A00 Dec.-02-2008 Initial Release X233H TDRSNDD8Y2ABPN[...]

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 short specification describe s the electrical, optical and functional perfo rmance requi rements fo r a 58.4cm (23”) TFT LCD color monito r with VGA&DVI compatible interface. Description The LCD monitor is designed with the latest LCD tec hnolo gy to provide a performance oriented produ ct with no ra[...]

8 Electrical Requirement s of X233H Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. Ambient light Dark room (< 1 cd/m 2 ) 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 U[...]

9 LCD Monitor General Specification Model name X233H Driving system TFT Col or LCD Active Display Area 509.76 (H) × 286.74(V) Pixel pitch 0.2655(H) x 0.2655(W) Contrast Ratio 40000 : 1 Max(ACM) Response time 5ms(T yp.) LCD Panel Luminance of White 300(T yp.) cd/ ㎡ Separate Sync. H/V TTL H-Frequency 30kHz – 83kHz Input V -Frequency 56-75Hz View[...]

10 LCD Panel Specification of X233H General Specifications Block Diagram TFT LCD Module[...]

11 Back light Unit Electrical Characteristics[...]

12 Optical Specifications[...]

13 Factory Preset Timing of X233H VESA MODES Horizont al V ertical Mode Resolution T otal Nominal Frequency +/- 0.5kHz Sync Polarity Nominal Freq. +/- 1 Hz Sync Polarity Nominal Pixel Clock (MHz) 640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175 VGA 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500 800x600@56Hz 1024 x 625 35.156 N/P 56.250 N/P 36.000 8[...]

14 Monitor Block Diagram The LCD MONITO R will contain a main board, a power boar d, a usb board and a key board which hou se the flat panel control logic, brightness control logic an d 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. Power Board Flat Panel and CCFL[...]

15 Main Board Diagram Flash Memory SST25VF010A-33-4C-SAE (U 4 0 2 ) Panel Interface ( CN301 ) Crystal 12MHz (X401) Keypad Interface (CN402) Scalar IC NT68667UFG/C QFP-12 8L (Include MCU, ADC, OSD) (U401) D-Sub Connecto r (CN101) H sync V sync RGB DVI Connecto r ( CN102 ) D-Data D-Clock[...]

16 Software 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[...]

17 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[...]

18 Main Board Layout Symbol Description Symbol Description U401 IC NT68667UFG/C QFP-128L CN402 WAFER U703 IC AP1 1 17D33L-13 T O252-3L DIODES CN701 WAFER 9P RIGHT ANELE PITCH U103 IC AZC099-04S SOT23-6L CN301 CONNECTOR U104 IC AZC099-04S SOT23-6L X401 CRYSTAL 12MHz HC-49US ARG6-120 U402 SST25VF010A-33-4C-SAE CN101 D-S UB 15PIN VERTICAL CONN WITH SC[...]

19 Inst allation[...]

20[...]

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 be conne cted. • Connect the video cable from the monitor to t[...]

22 eColor Management (OSD) Operation instructions S tep 1: Press “ Key” to open the Acer e-Color Management OSD and acce ss the scenario modes S tep 2: Press “<” or “>” to select the mode S tep 3: Press “Auto Key ” to confirm the mode and run Auto Adjust[...]

23 How to Adjust a Setting[...]

24 Adjusting the picture[...]

25[...]

26 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 n the level of DDC used, communicate additional information about it s display capa bilities. The D[...]

27 Machine Disassembl y This chapter contains step-by-step proce dures on how to disassemble the X233H monitor for maintenance. The tool for disassembly is as follows: Screwdriver, hexagonal screwdriver, Putty knife. Disassembly Procedure 1. Remove the hinge assembly . 2. Remove the rear cover and bezel. The arrows in blue are the hoo k that we sho[...]

28 3 ． Remove the lamp connectors and rem ove the screws to remove the panel. Put attention to the L VDS cable. 4. Remove the screws to remove the main board and powe r board.[...]

29 5. The panel[...]

30 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the X233H: 1. No Power Chapter 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 X401 oscillate waveforms are normal Measure U703 Pin2=3.3V , OK OK N[...]

31 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U703 Pin2=3.3V , Check Corre spondent component Replace U401 X401 oscillate waveform is normal Check U703, C706 and C707 OK OK OK OK OK NG NG NG NG Check reset c ircuit of U401 is normal Check HS/VS from CN101 [...]

32 3. Panel Power Circuit White screen Measure Q302 base is low level? X401 oscillate waveform is normal Check CN301is solder and Q302,Q301 is OK? Check Correspondent component. Replace P ANEL Check Correspondent component. Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset c ircuit of U401 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? Repl ace Button Switch Y NG NG Is Key Pad Board normally? Replace Key Board Y NG Y Check Main Board[...]

34 5. Power Board 1) No power Check CN902 PIN3, 4 = 5V Check AC line volt 1 10V or 220V Check AC input Check the voltage of C9 05 (+) Check bridge rectified circuit and F901 circuit Check sta rt voltage for the pin3 of IC90 1 Check R904, R905 and Change IC901 NG Check the auxiliary voltage is bigger than 1 1V and smaller than 25V 1) Check IC901 2) [...]

35 2.) No Backlight Check if the input voltage of inverter part is 16V NG OK Check adapter p art Check ON/OFF sign al Check Interface board NG OK Check IC801 PIN12=14.5V NG OK Check ON/OFF cir cuit Check IC801 PIN5 have triangle wave NG OK Change IC801 Check IC801 PIN9/PIN10 PWM wave NG OK Check R816/ R817/R818/R819 Check the output of PT801 Check [...]

36 Connector Information Chapter 5[...]

37 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) lis ting in global configurations of X233H. 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 ava[...]

38 ITEM PART NO. DESCRIPTION Q`TY 1 BEZEL L23WA-8ACER3-S4 A34G10 84 RXA1B0130 1 2 KEY BUTTON Q33G0237 RX 1L0100 1 3 LED LENS A33G0270 1 1L0100 1 4 KEY BOARD KEPC7QK1 1 5 PANEL LTM230HT01 A03(003) SZ SEC 750GLS230HT132 N000 1 6 POWER BOARD PWPC8E41MQHU 1 7 MAIN BOARD CBPCRNDAEQ1 1 8 MAIN_FRAME_SAM A15G0563101102 1 9 MAIN_FRAME_SHIELD A85G0141101 1 1[...]

39 Part List Above picture show the description of the followin g component. Picture Description Part No. Main_frame_Sam A15G0563101 102 Bezel A34G1084 RXA1B0130 Panel 750GLS230HT132N000 Power Board PWPC8E41MQHU[...]

40 Main Board CBPCRNDAEQ1 Key Board KEPC7QK1 S tand Front A34G0473 RX 1B0100 Base A34G0475 RX 1B0130 Stand Rear A34G0474 RX 1B0100[...]

41 Hinge A37G0050 4 USB BOARD USB7QK4[...]

42 S c h e m a t i c D i a g r a m Main Board 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 17 16 CN1 0 1 DB 1 5 DS UB _5 V ESD _5V 5VCC R102 100R 1/ 10W 5% VGA_R- DSUB _B+ I/O 1 1 GND 2 I/O 2 3 I/O3 4 VD D 5 I/O4 6 U1 04 AZ C 099-04S DS UB _S CL DS UB _S DA E5VC C C10 1 NC VGA_B+ VGA_R + VGA_G+ I/O1 1 GND 2 I/O2 3 I/O3 4 VDD 5 I/O4 6 U10 3 AZ C 099-04S V_Sy[...]

43 +5V + C3 05 100uF25V R3 04 47K 1/ 16 W 5% R3 03 10K 1/ 16 W 5% C3 02 0. 1uF / 16V PAN EL_VC C T0 M T0 P T1 P T1 M T2 M T2 P TC L K 1 P TC L K 1 M T3 M T3 P T4 P T4 M T5 P T5 M R3 01 330 OH M 1/ 4W T6 M T6 P TC L K 2 P T7 P T7 M TC L K 2 M PPW R _ ON # C3 01 0. 1uF / 16V Q301 AO3401 R305 0 O HM + - 5% 1/8W PAN EL_VC C Q302 2N 3904S-R T K/ PS R3 0[...]

44 DS UB _ 5V C 711 NC/0 .1u F/16 V D70 1 SM340A 3 1 2 D 702 BAT 54C 1 2 FB701 300 OHM E5VC C AD J 1 Vout 2 Vin 3 U70 2 NC /AI C 1117A-18PE 5VCC R71 0 NC C 710 NC R70 7 NC R70 3 NC PANEL _I D # C70 3 NC V CC3 .3 VC C3 . 3 R7 0 1 NC VC C3 . 3 + C70 4 NC /100uF 25V lock type 5VCC on_BAC KLI GH T BKLT -EN BKLT -VBR I +5V BKLT-VBRI +5V adj_BAC KLI GH T[...]

45 EE_WP T0M T0P T1M T1P T2P T2M T3M T3P TC LK 1 P TC LK 1 M T4M T6M T4P T7P T5P TC LK 2 M T6P T7M TC LK 2 P T5M MU TE R454 N C SPI_SI SPI_C K R46 7 NC / 0R05 1/ 16W +5V R46 5 NC / 10K 1/16W C41 3 0.1uF /16V NC 1 NC 2 NC 3 VSS 4 SDA 5 SCL 6 WC 7 VCC 8 U403 NC/M2 4C16 C43 0 0.1uF / 16V FB404 300OHM C41 2 0.1uF /16V R472 75R 1/1 6W 5% +5V R469 2K 2 1[...]

46 Power board R903 100K O MH 2W +- 5% L904 Coil ACER R927 10K 1/10W 1% +5V +16V +5V C921 1000pF 250V Q903 KT D1028 C91 2 0.001uF 1 4 2 3 L901 27mH R962 100 O HM 1/4W 1 2 3 4 5 6 7 8 9 10 11 12 13 CN90 2 CONN R920 100 OHM 1/4W R946 100OHM 2W D903 I N4148 C94 0 0. 047uF +5V 1 + C93 4 NC + C91 6 1000uF/25V + C91 8 680uF25V 1 2 HS 3 HEAT SIN K(D 906) [...]

47 C81 0 0. 0033uF 6 2 7 5 1 8 PT8 01 POWER X'FM R ACER S2 1 G2 2 S1 3 G1 4 D1 5 D1 6 D2 7 D2 8 Q806 AO4620 VSEN 1 SSTCMP 2 CT 3 RT 1 4 GN D A 5 PD R 2 6 GN D P 7 NDR2 8 NDR1 9 PDR 1 10 VDD A 11 TI M E R 12 PWM 13 IS E N 14 OVPT 15 ENA 16 I C801 t a9687GN -A-0-T R R8 30 6K8 1/8W 5% R8 28 6. 2M OHM 1/ 2W R8 36 56K 1/10W 5% HV 1 LV 2 CN8 01 CO N[...]

48 S HUT DO WN 1 BY PASS 2 RIN- 3 GN D 4 GN D 5 LI N - 6 VOLU ME 7 SE/ BTL 8 LOU T - 9 VD D 10 LOU T + 11 GN D 12 GN D 13 RO UT + 14 VD D 15 RO UT - 16 IC6 01 APA2069J ITUL C6 14 0. 1u F / 16V LOU T - ACER Lin Ri n Q608 MMB T 3 90 4 D 601 I N 4148 Q607 M MBT 3906 R6 13 1K 1/ 10W 5% R6 10 10K 1/10W 5% R6 1 1 56K 1/10W 5% R6 12 10R 1/ 10W 5% OEM MODE[...]

49 Key board GN D R 002 2K OHM 1% 1/ 10W AUTO LBADC1 VOL- (2K) POWER MENU (2K) (GND) (1K) LBADC2 VOL+ 0 V AUT O LBADC 1 R 004 2K OHM 1% 1/ 10W LBADC 2 ME NU LED_GR N # LE D_RE D# change N et name MENU---> AUTO AUTO---- MENU D C_POW ERON 1 2 3 4 5 6 CN00 1 CONN 2007/5/11 1 2 4 3 5 SW0 06 SW 1 2 4 3 5 SW 003 SW G 1 GND1 GN D -EMI G 1 GN D 2 GND- E[...]

50 Usb board C78 8 0.1uF 16V C789 0.1uF 16V C79 0 0.1uF 16V C79 1 0.1uF 16V C79 2 0.1uF 16V R76 7 N C/ 2 2K 1/ 10W C7 79 1uF/ 25V + C7 78 470uF/ 25V DM 2 DP2 C71 01 0. 1uF 16V 1 2 ZD7 11 EGA10603V05A 1-B 1 2 ZD7 12 EGA10603V05A 1-B DM 0 DP0 /OC3 /OC4 1 4 2 3 L707 NC VBU S0 1 2 FB723 120 OHM VBUS1 VCC 3.3V 1 4 2 3 L712 NC 1 4 2 3 L705 NC VBUS0 VCC 3[...]