Acer AL1912 manual

- 1 - Acer AL1912 Service Guide Service guide files and updat es are available on the CSD web: for more information, Please refer to http://csd.acer .com.tw/[...]

- 2 - Copyright Copyright © 2003 by Acer Incorporated. All rights re served. No part of this publi cation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or comp uter language, in any form or by any means, electronic, mecha nical, magnetic, optical, chemical, manual or otherwise, without t[...]

- 3 - Conventions The following conventions are u sed in this manual: Screen messages Denotes actual messages that appea r on screen Note Gives bits and pieces of a dditional information related to the current topic. W arning Alerts you to any damage that might re sult from doing or not doing specific actions. Caution Gives precautionary measures t[...]

- 4 - W ARNING: (FOR FCC CERTIFIED MODELS) NOTE: this equipment has been tested and found to comply with the limits for a Class B digit al device, pursuant to Part 15 of the FCC Rules. These limits are de signed to prov ide reasonable protection against harmful interference in a residential inst allation. This equipment generates, uses and ca n rad[...]

- 5 - PRECAUTIONS  Do not use the monitor near water , e.g. near a bathtub, washbowl, kitchen sink, laundry tub, Swimming pool or in a wet basement.  Do not place the monitor on an unst able trolley , stand, or t able. If the monitor falls, it can injure a person and cause serious dama ge to the appliance. Use only a trolle y or stand reco mm[...]

- 6 - SPECIAL NOTES ON LCD MONITORS The following symptoms are norm al with LCD monitor and do not indicate a problem. NOTES  Due to the nature of the fluorescent light, the screen may f licker during initial u se. T urn off the Powe r Switch and then turn it on again to make sure the flicker disappears.  Y ou may find slightly uneven brightn[...]

- 7 - T able of content s Chapter 1 Monitor Feature …………………………………………………………………...……….. 8 INTRODUCTION ...............................................................................................................................................................8 ELECTRICAL RE QUIREMEENTS ......[...]

- 8 - Chapter 1 M o n i t o r F e a t u r e INTRODUCTION Scope This specification defines the requirements fo r the 19” MICRO-PROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and eliminat es the requirement of optional special display card. It also[...]

- 9 - Height Adjust Option Option ELECTRICAL REQUIREMENTS Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwise spe cified. Ambient light : 225 lux Viewing distance : 50 cm in front of LCD panel Warrn up time All specifications : 30 minutes Fully functional : 5 secon ds Measuring Equipment : Chroma[...]

- 10 - LCD monitor General specification Panel Type: 19 “ active matrix color TFT LCD 1). Fujitsu FLC48SXC8V-10 Display size: 376.32mm (H) × 301.056mm(V) Display mode: VGA 720 × 400 (70 Hz) VGA 640 × 480 (60/66/70/72/75 Hz) SVGA 800 × 600 (60/70/72/75 Hz) XGA 1024 × 768 (60/70/75 Hz) SXGA 1280 × 1024 (60/70/75 Hz) sta ndard resolution Pixel[...]

- 11 - Total output power: 60 Watt max. LCD Panel Specification LCD Panel Model (Hydis LT17E12-200 ) • Display Type active matrix color TFT LCD • Resolution 1280x1024 pixels • Display Dot 1280x (RGB) x 1024 • Display Area 376.32mm(H) x 301.056mm(V) • Pixel Pitch 0.294mm(H) x 0.294mm(V) • Display Color 16M • Lamp Voltage 750 Vrms (typ)[...]

- 12 - Panel Relative Humidity Input Signals Video input • Type Analog R, G, B. • Input Impedance 75 ohm +/- 2 % • Polarity Positive • Amplitude 0 - 0.7 +/- 0.05 Vp • Display Color same as LCD panel Sync input • Signal separate horizontal and ve rtical sync, or composite sync which are TTL compatible • Polarity positive and negative. [...]

- 13 - Supported Timing TIMING FH(KHZ) SYNC TOT AL ACTIVE SYNC FRONT BACK PIXEL FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ.(MHZ) (DOT/LINE) (DOT/LINE) (DOT/LINE) 640x350 31.469 + 800 640 96 16 48 25.175 VGA-350 70.087 – 449 350 2 37 60 640x400 24.83 – 848 640 64 64 80 21.05 NEC PC9801 56.42 – 440 400 8 7 25 640x400 31.469 ?[...]

- 14 - Support Modes There will be 28 total support modes to accommodate the above mode an d other video modes within t he frequency rang e of the monitor . 85Hz refresh rate Support Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display “Ou t of Range” warning menu at this mode. Video input Connector Analog Vid[...]

- 15 - MONIT OR BLOCK DIAGRAM The LCD monitor will cont ain an main board, an inverter/ po wer board, key board and internal adapte r which house the flat panel control logic, brig htness control l ogic an d DDC. The inverter board will drive the backlight of panel an d the DC-DC conversion. The Adapter will provide thr 12V DC-p ower to inverter/ p[...]

- 16 - BLOCK DIAGRAM System Block Diagram MCU L VDS Signals MVPRL including ADC, Scaling L VDS And OSD function[...]

- 17 - Monitor board layout LABEL Component LABEL Component U1 74LVC14 CN1 D-SVB 15 PIN U2 24LVC21 CN9 E&T 4501-10 U4 MVPRL CN3 E&T 6113-08 U6 M8064I CN301 E&T 4501-11 U5 24LC16B CN302 E&T 4501-03 U7 MAX810 CN7 E&T DF14-30 U8 SI9435 U9 LM4838 U10 APL1085-3.3 CE U11 APL1117-2.5 VC[...]

- 18 - Sof tware flow chart[...]

- 19 - General Instructions Press the power button to turn the mo nitor on or off. The other control buttons are located at front panel of the monito r . By changing these settings, the picture can be adjusted to your per sonal preference s.  The power cord should b e connected.  Connect the video cable from the monitor to the video card. [...]

- 20 - System Inst allation Connecting the Display  Power off your computer.  Connect one end of the signal cable to the LCD Monit or’s VGA port.  Connect the other end of the signal cable to the VGA port on your PC.  Make sure conne ctions are secure. Connecting the AC Power  Connect the power cord to the LCD Monitor.  Connect [...]

- 21 - The step between front bezel and back co ver shall be within specification. Top and Bottom Left and Right Back cover & Bezel concavity Back cover & Bezel concavity 0.8mm ≤ A ≤ 1.3 mm 0.8mm ≤ A ≤ 1.3 mm Back Cover & Hinge Cover concavity 0mm ≤ B ≤ 0.5mm[...]

- 22 - Base & Neck conc avity 0mm ≤ C ≤ 0.6mm Top and Bottom Left and Right Back cover & Bezel step Back cover & Bezel step 0mm ≤ D ≤ 0.8 mm 0mm ≤ D ≤ 0.8 mm[...]

- 23 - LCD Horizontally The angle between front bezel an d LCD unit in bottom side should not large than 1.0mm. The distance of the LCD display unit from left side to right should n ot large than 4.0mm.[...]

- 24 - Tilt Base Rotation Tilt up 15 ± 2 ° / down 5 ± 2 ° Plastic Material For TCO99 Front Bezel PC+ABS Back Cover PC+ABS The Others ABS 94HB For MPRII Front Bezel ABS 94V-0 Back Cover ABS 94V-0 The Others ABS 94HB GAP Spec. Gap between panel w ith bezel is 0 mm < gap < 1.2 mm[...]

- 25 - POWER/Inverter Board Description This specification defined t he performance and ch aracteristic of power/inve rter board. It supplies the following outputs : 1). 5Vdc: Logic power. 2). 5Vaudio: Audio power. 3). 15Vinv: Inverter power. Features Input V olt age: 100 ~ 240 ±10 ％ Va c Input current: 1.2Amax. at 90V ac Input Frequency: 47 ~ 6[...]

- 26 - 2.Inverter-side connecter : SM02B-BHSS-1-TB (JST) for AL1912 m / SM02(8.0)B-BHS-1(JST) for AR599 or equivalent. PIN NO. Function Comment 1 Cth VBLH(High voltage) 2 Ctl VBLL(Low voltage) Electrical Specification: AC-DC Electrical specification Input Specifi cation No Item Condition Min. T yp. Max. Unit 1 Input V olt age ----- 100 --- 240 V ac[...]

- 27 - AC-DC Output S pecification T olerance Output Current Output V olt age --- MIN MAX V olt age T olerance +5Vdc +5 /-3 % 0.05A 1.5A 4.85~5.25V dc +15Vinv +35/-5 % 0A 2A 20~14.3Vdc +5V audio ± 5% 0A 0.6A 4.75~5.25Vdc Ripple --- 1% +5Vdc:50mVp-p +15Vinv:150mVp-p Noise 1. Measured at DC output terminals which are paralleled with a 10uf Ecap &[...]

- 28 - Inverter Electrical Specification: For Fujitsu FLC488SC8V-10 (AL1912 m) Condition Min. T yp. Max. Unit Input V olt age --- --- 15 --- V Input Current --- --- 1.5 --- A ON 3.3 V Backlight ON/OFF Control OFF 0 V Brightness Adjust Min. Luminance / Max. Luminance --- 30% --- --- Output V olt age Vin=15V , I out=6.5mA --- 750 --- V rms Brightness[...]

- 29 - Power Consumption The monitor is equipped with a powe r-management according to the below . There is a delay of 5s … 7s befor e the transition from On-state to a ny power saving state to avoid unintentionally entering of a power saving st age during display resolution and timing mode chang es. T ransition from any power saving st ate to an[...]

- 30 - Chapter 2 O p e r a t i n g I n s t r u c t i o n s CONTROLS Control panel (monitor front panel) 1. Power ON/OFF switch, pu sh to ON and push to OFF. (Toggle switch) 2. Power LED will be blue when monitor is on; be ambe r when in power saving mode. 3. Menu. 4. Adjust increase (Function select). Adjust decrea se (Function select). 5. Auto adj[...]

- 31 - Main OSD Menu: Outline: The description for control function : Main Menu Icon Sub Menu Item Sub Menu Icon Description Adjustment Range Reset V alue Contrast Contrast from Digit al-register . 0-100 Recall Cool Contrast V alue Brightness Backlight Adjustment 0-100 Recall Cool Brightness V alue Focus Adjust Picture Phase to reduce Horizont al-L[...]

- 32 - User / Red Red Gain from Digit al-register . 0-100 100 User / Gr een Green Gain Digit al-register . 0-100 100 User / Blue Blue Gain from Digital -register . 0-100 100 English N/A Set OSD display language to English. N/A 繁體中文 N/A Set OSD display language to T randitional Chinese. N/A Deutsch N/A Set OSD display language to German. N/A[...]

- 33 - Hot-Key Menu:(For AL1912 m only) Outline: The description for Hot-Key function : Item Operation Icon Description Adjustment Range Reset Va l u e V olume When the OSD is closed, press Left or Right button will be V olume Hot-Key Function V olume of Audio adjustment. The Audio will be Mute when volume=0. 0-100 50 OSD Message: Outline: The desc[...]

- 34 - LOGO: When the monitor is power on, the LOGO will be showed in the center . Item of Factory menu Vendor may customize design and ad d adjustment items Fa ctory menu as far as all required items are included. 1) Bright Adjust Brightness and Contrast value t o Max. 2) Auto Balance Adjust each R, G, B contrast (gain) and offset. Method of auto [...]

- 35 - Plug and play Plug & play DDC2B feature This monitor is equipped wi th VESA DDC2B capabilities ac cording to the VESA DDC ST ANDARD. It allows the monitor to inform the host system of it s identity and, depending on the level of DDC used, communicate additional informatio n about its displ ay capabilities. The comm unication channel is d[...]

- 36 - White Color Temperature White color temperature is 4 preset as 9300, 7500,65 00 and User , Default value of user color sho uld be user which is maximum setting for p anel. T arget of color setting Color Te m p . Color Coordinate T olerance Color Coordinate T olerance x y u’ v’ 9300K 0.283 0.297 + 0.03 0.189 0.446 　 u’v’ < 0.01* [...]

- 37 - Electrical characteristics (Tamb=25 ° ) Audio amplifier(USE Panasonic VP-7723A Audio Analy zor. ) Spec. Item Audio Input Freq. Min. Typ. Max. Comment Input Voltage(V) - 0.5Vm s - Input Current(m A) - 500 800 Audio Voltage Gain 500m Vrms 1KHz - - 6 d B Volume Max.,load 4 Ω Frequency Response 500m Vrms 300Hz-20KH z -10dB - +10d B Volume Max[...]

38 Chapter 3 Machine Disassembly and Replacement Disassembly Procedure Disassemble the base 1. Remove the neck cover . 2. Remove the four scre w s to release the hinge. 3. Remove the base Disassemble the chassis 1. Remove the four scre w s to release the back cov er . 2. Remove the t w o screws to release the EMI cover from chassis. 3. Remove the t[...]

39 Disassemble the main board 1. Disassemble audio line from power board. 2. Disassemble two VL-VK lines from VL board. 3. Disassemble power line from VL board. 4. Disassemble FPC line from VL board. 5. Remove the one scre w to release line from Chassis. 6. Remove the three scre w s from Chassis and releas e the main board. Disassemble the power bo[...]

40 Disassemble the speakers 1. Remove the two scre w s to release line and VK board from bezel. 2. Remove the t w o screws to release line and chassis from bezel. 3. Remove the four scre w s from bezel.[...]

41 Chapter 4 T roubleshooting Main Procedure[...]

42 Power Circuit and B acklights Troubleshooting[...]

43 Performance Troubleshooting[...]

44 Function Troubleshooting[...]

45 Chapter 5 C o n n e c t o r I n f o r m a t i o n Phonejack stereo PIN1. right : CEE22 typed connector PIN2. Left PIN3. Gnd : Line-in receptacle Video input Connector Analog Vide o input Connector: 15pins mini D-Sub T able 2.4.5. Pin assignment for D-sub connector PIN NO. Separate Sync 1 RED VIDEO 2 GREEN VIDEO 3 BLUE VIDEO 4 GROUND 5 GROUND 6 R[...]

46 Chapter 6 F R U ( F i e l d R e p l a c e a b l e U n i t ) l i s t This chapter gives you the FRU (Field Replaceable Unit) listi ng in global configurations of AL1912 m. Refer to this chapter whenever ordering for p arts to repai r or for RMA (Return Merchandise Authorization). NOTE : Please note WHEN ORDE RING FRU P ARTS, that you should check[...]

47 Model: AL1912[...]

48 Model:AL1912 m[...]

49 Part list No. Photo Part Name Part No. 1 Hinge Cover F AAR772100 0 2 Base Assy F AAR9913A00 3 Rear Co ver F AAR9912000 4 Base F AAR9913000 6 Neck F AAR7713000 7 Main Shield ECAR9914A00 8 MB DA2P577V012[...]

50 9 Power Board to MB cable 599: 453AAP30021 598: 453AAP30031 10 Inverter Board 599: 453AAP30021 598: 453AAP30031 11 Front Bezel F AAR991 1A00 12 Keyboard to MB Cable 599: DCO20162300 598: DCO20162500 13 S peaker-R CG10021V900 14 S peaker-L CG19921V910 15 Frame ECAR9915A00 16 LCD (R) AC6VF190010[...]

51 17 Panel to MB cable DC020162600 18 Function Board 599: 454AAPE0001 598: 454AAP3001 1[...]

52 Chapter 7 S c h e m a t i c D i a g r a m[...]

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