Gebruiksaanwijzing /service van het product H235H van de fabrikant Acer
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1 Acer H235H Service Guide.
2 Service Guide V ersion and Revision Version Release Date Revision History Customer model TPV model HD9SA6MK8XA YDC A00 May .-13-2009 Initial Release H235H HD9GA6MK8XABDC.
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 an.
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.
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.
6 T able Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirement s …………….
7 Monitor Features Introduction Scope This short specification describe s the electrical, opti cal and functional performa nce requirem ents for a 63. 2cm (23.
8 Electrical Requirement s of H235H Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. W arm up time ＞ 30 min. AC supply voltage 230V± 5 ％ , 50± 3 Hz Ambient temperature 20 ° C ± 5 ° C Humidity 65% ± 20% Display mode 1920 x 1080, 60 Hz, Pixel Clock ： 148.
9 LCD Monitor General Specification See the image on next page..
20.2 11.2 13.8 16.5 X221W 8.1 2.5 20.2 11.2 13.8 16.5 X222W 8.1 2.5 22.7 15 15.3 17.9 X241W 11.7 3.7 18.7 11.2 12.7 X201W 8.1 2.6 16 18.7 11.2 12.7 X202W 8.1 2.6 16 24.3 11.1 16.1 18.6 3.9 8.6 AL2616W 11.7 3.7 11.7 3.7 23.9 15 18.8 15.9 AL2623W 16.3 13.
10 LCD Panel Specification of H235H LTM230HT01 is a color active matrix liquid crystal di splay (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching com ponents. This model is composed of a TFT LC D pan el, a driver circuit and a back light unit.
11 Optical Specifications.
12.
13 Factory Preset Timing of H235H.
14 Monitor Block Diagram The LCD MONITO R will contain a main board, a power boar d, and a key board whi ch house the flat panel cont rol 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.
15 Main Board Diagram Flash Memory EN25F20 (U402) Panel Interface (CN404) Crystal 12MHz (X401) Key control Interface (CN401) Scalar IC TSUMO5 8GDJ-LF (Include MCU, ADC, OSD) (U401) D-Sub Connecto r (C.
16 Power Board Diagram DIM EMI filter S tart Re sistor (R904, R905) PWM Control (IC901) T r ansformer AC input 16V ON/OFF Feedback Circuit T r ansfor mer (PT801) MOSFET (Q805,Q806) Lamp 5V Bridge Rect.
17 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.
18 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.
19 Main Board Layout.
20 Symbol Description Symbol Description U401 IC TSUMO58GDJ- LF-1 U601 IC PCM1754D BQR SSOP-1 6 U402 IC EN25F 20-100GCP U603 IC PA6019A4 X401 14.31818MHZ/32PF/ 49US0 CN401 WAFER U405 M24C02-WMN6TP CN4.
21 Inst allation 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 monitor and computer are switched off. b Connect the VGA video cable to the computer. c Connect the digital cable (only for dual -input models).
22 Att aching the Base 1 Attach the monitor stand arm to the base. 2 Ensure that the base is locked onto the monitor stand arm. SCREEN POSITION ADJUSTMENT To optimize the viewing position, you can adjust he monitor tilt, using both of your hands to h old the edges of the monitor.
23 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.
24.
25 How to Adjust a Setting.
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27 How to Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Fea ture This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC ST ANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about it s display capa bilities.
28 Machine Disassembl y This chapter contains step-by-step pro cedures on how to disassemble the monitor- H235H for maintenance. The tool for disassembly is as follows: Screwdriver, Hexagonal screwdriver, Putty knife. Disassembly Procedure 1.Lay the monitor on a flat, soft and clea n surface.
29 (2)Pry the monitor up then find out the hooks’ position, use th e tool (like the picture or ot her card) to inse rt into the gap of bezel and rear cove r.
30 T urn over the monitor and take off the re ar cover . (3)Remove the four screws remark ed in red to remove the hinge,.
31 (4)Disconnected the connector remarke d in green to remove the bezel. PS: be careful to Disconnect the Key board connector , because the keyboard connector maybe damage.
32 5. Remove the five screws remarked in red. L VDS cable.
33 6. Remove the five screws remarked in red and disconne cted re marked in green to remove the main b oard and power board. Power board Main board.
34 7.The panel.
35 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the H235H: 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 U104 Pin2=1.
36 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U104 Pin2=1.
37 3. Panel Power Circuit White screen Measure Q106 base is low level? X401 oscillate waveform is normal Check CN404 is solder and Q106, Q104 is OK? Check Correspondent component.
38 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 .
39 5. Power Board 1) No power Check CN902 PIN3, 4 = 5V Check AC line volt 1 10V or 220V Check AC inpu t Check the voltage of C9 05 (+) Check bridge rectified circuit and F901 circuit Check sta rt volt.
40 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 PIN10=16V NG OK Check ON/OFF cir cuit Chec.
41 Connector Information D-sub connect and DVI connect: 15-Pin Color Display Signal Cable 24-Pin Color Display Signal Cable Chapter 5.
42 19-pin color display si gnal cable.
43 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) lis ting in global configurations of H235H. Refer to this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation).
44 Item Description TPV Part No. ACER Part NO. Q`ty 1 BEZEL A34G1361AGBA1B0130 60.LHF0B.003 1 2 POWER MYLAR Q05G6104 1 1 3 POWER B UTTON A33G0714BDZ 1L0100 1 4 LED MYLAR Q05G6104 1 1 5 LED COVER A33G0713AGC 1L0100 1 6 MAIN FRAME A15G0820101 60.LHF0B.006 1 7 BASE ASS'Y Q37G015101 1 60.
45 Part List Above picture show the description of the followin g component. Picture Description TPV Part No. ACER Part NO. Main_frame A15G0820101 60.LHF0B.006 Bezel A34G1361AGBA1B0130 60.LHF0B.003 Panel 750GLG230F1A33N000 LK.23006.00 1 Power Board PWPC9D41EQKP 55.
46 Main Board CBPCRA6ABQ4 55.LHF0B.001 Q37G015101 1 BASE ASS'Y A34G1 136AEM 1B0130 60.LHF0B.005 Rear cover A34G1362AEOA1M0100 60.LHF0B.004.
47 S c h e m a t i c D i a g r a m Main Board +5V _U SB + C10 5 100uF/ 16V Adj_BACKLI GH T 5 + C10 2 470uF/ 16V + C1 16 470uF/ 16V C1 11 0.22uF C B 38 Tuesday , May 12, 200 9 715G3266-E < 称爹 > 2.
48 R457 470R 1/ 16W 5% U405 M24C02-WMN6TP 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SD A SCL WP VCC C455 0.1uF 16V DAT 0+ R474 100R 1/ 16W 5% C449 0.1uF 16V R462 100R 1/ 16W 5% R467 1K 1/ 16W 5% +5V VSI D425 BAV99 3 1 2 C450 22pF VGA_CON R493 10R 1/16W 5% R454 56 OH M 1/16W RX C+ 7 SCL_D VI RED- FB407 30 OHM 1 2 C459 0.
49 VCC 3.3 R44 8 10K 1/ 16W 5 % VCC1 .8 R55 5 NC R450 4K7 1/ 16W 5 % C438 0. 1uF 16V LED_A KEY 1 on_BACKLI GHT 3 R41 8 10K 1/ 16W 5% +5V +5V KEY 2 PB6 Q404 2N3904S-R TK/PS VCC 3.3 FB4 05 120 OHM 1 2 R57 0 4K7 1/ 16W 5% PB7 FB4 01 120 OH M 1 2 VCC 3. 3 Sensor_SCL R41 3 470R 1/16 W 5% RIN 4 XO U T R430 3.
50 LVB1P RX E C- LVA1P LVAC KP VLC D LVB1M LVB2P RX E 1 + PB5 R4 9 4 220 OH M 1/ 4W RX E 0 + LVB0P LVA1P RX O C+ LVBC KM PA9 RX E 2 - C 464 0. 1uF 16V PB2 Panel_VC C PA5 LVB3P PA8 RX O 2 + RX E 3 - RX.
51 HD MI1_C K- D501 BAT54C 1 3 2 HDM I_CP- 5 HDM I_S EL 5 Q506 2N3904S-R TK/PS HD MI1_D 1- HDM I_CP -1 C506 0.1uF 16V HDM I_CP- 3 HDM I1_D1 + C509 0.1uF 16V HDM I_H PD 5 CLK + 5 HD MI_5V +5V G+ 5 HI LOW HDM I_CP- 6 R499 100R 1/ 16W 5% +5V HDM I_CP -2 HDM I_CP -5 Q502 NC VC C3.
52 INR CN60 2 CONN 1 2 3 4 R R61 9 18K 1/16W 5% +5V_AUD I O R R6 09 10K 1/16W 5% HINL + C60 2 10uF / 16V VOL 5 C6 35 0. 47uF / 16V + C63 8 NC 220uF / 25V R64 4 1K 1/ 16W 5% C64 1 NC FB6 11 120 OH M MU.
53 Power board +5V R94 6 820OHM 2W D90 0 FR10 7 ZD90 2 TZ X1 8B L901 27m H 1 4 2 3 IC90 1 LD75 76 1 2 3 4 5 6 7 8 CT COM P CS GNDO UT VCC NC HV F9 01 FUS E + C91 8 470U F M 35V CN90 3 CONN 1 2 3 4 ! + C90 5 120uF 450V C904 NC (0.22U F 275V) R910 10R 1 /4 W 5% R90 9 3.
54 R 841 1M 1/10W 5% Q802 2N7002 SOT-23 C8 12 NC D8 0 6 BAV70 3 1 2 R8 08 390R 1/ 10W 1% LV1 XXXX R8 44 5. 1K 1/10W 5% Z D803 RL Z5.6 B 1 2 R842 5. 1K 1/ 10W 5% I C 801 ta9687GN -A-0-T R 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 VSEN SST C MP CT RT 1 GN D A PD R2 GN D P NDR2 NDR1 P DR1 V DDA TI ME R PW M IS EN OVPT EN A C8 1 0 0.
Een belangrijk punt na aankoop van elk apparaat Acer H235H (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Acer H235H heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Acer H235H vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Acer H235H leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Acer H235H krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Acer H235H bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Acer H235H kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Acer H235H . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
