Instruction/ maintenance manual of the product AL2051 Acer
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TABLE OF CONTENTS FOR YOUR SAFETY -------------------------------------------------- 1 SAFETY PRECAUTIONS -------------------------------------- 2 SPECIAL NOTES ON LCD MONITORS ------------------- 3 B.
1 manual should be retained for future reference. F CC Class B Ra di o F re qu e n cy I n terfere n ce Stateme n t W A RNING: (FOR FCC CERTIFIED MODELS) NOTE: T his equipment has been tested and found to comply w ith the limits for a Class B digital device, pursuant to P a rt 15 of the F CC R u les.
2 z F or use only w ith the attached po w er adapter (Output 12Vdc) w h ich have UL, CSA listed license PREC A U TIONS z Do not use the monitor near w a ter, e.g. near a bathtub, w ashbo w l, kitchen sink, laundry tub, s w imming pool or in a w e t basement.
3 SPECI A L NOTES ON LCD MONITORS T he follo w ing s y mptoms are normal w ith LCD monitor and do not indicate a problem. NOTES • Due to the nature of the fluores c ent light, the screen may flicker during initial use. T u rn off the Po w e r S w i t ch and then turn it on again to make sure the flicker disappears.
4 POWERCORD Po w e r Source: 1. Make sure that the po w er cord is the correct t y pe required in y our area. 2. T h is LCD monitor has an External univer s al po w er supply that allo w s operation in either 100/120V AC or 220/240V AC v o ltage area (No user adjustment is required.
5 CONTROLS A ND CONNECTORS C A BLE CONNECTIONS T u rn off y our computer befo r e performing the procedure belo w . 1. Connect the po w er adapter dc cab l e to the DC-In port on the back of the monitor. 2. Conne c t one end of t he 15 - pin D - S ub c able t o t he ba c k of t he monitor and connect the other end to t he computer’s D-Sub port.
6 • F o r optimal vie w ing it is recommended to look at the full face of the monitor, then adjust the monitor ’ s angle to y our o w n preference. • Hold the stand so y ou do not t opple the monitor w hen y ou change the monitor’s angle. F igure 2 NOTES • Do not touch the LCD screen w hen y ou change the angle.
7 OPER A T ING INSTRUCTIONS GENERAL INSTRUCTIONS Press the po w er button to turn the mon i tor on or off. T he other control buttons are located at front panel of the monitor (See F igure 3). By changing these settings, the picture can be adjus t ed to y our personal preferences.
8 FRONT P A NEL CONTROL • Po w e r Button: Press this button to turn the monitor ON or O FF , And display the monitor’s state. • Po w e r Indi ca tor: Blue — Po w e r On mode.
9 1. Press the MENU-button to activate the OSD w indo w . 2. Press < or > to select the desired function. 3. Press the MENU-button to select the function that y ou w ant to adjust. 4. Press < or > to change the s e ttings of the current function.
10 III. Dual-Input Model, Digital Signal Input ADJUSTING THE PICTURE T he descriptions for function control LEDS Main M e nu I c on Sub M e nu I c on Sub M e nu Item Descri p ti o n Contrast Adjusts the con t rast bet w een the foreground and background of the screen image.
11 N/A language Multi-language selection. H. Position Adjust the hori z ontal position of the OSD. V. Position Adjust the vert ical position of the OSD. OSD T imeout Adjust the OSD timeout. (only Analog- input Model) N/A Auto Config Auto Adjust the H/V Position, F o cus and Clock of picture.
12 PLUG AND PLAY Plug & Play DDC2B Feature T his monitor is equipped w ith VESA DDC2B capabilities according to the VESA DDC S T ANDARD. It allo w s the monitor to inform the host s y stem of its identity and, depending on the level of DDC used, communicate additional information about its display capabili t ies.
13 TECHNIC A L SUPPORT (F A Q ) Problem & Question Possible Solution Po w e r LED is not on *Check if the Po w e r S w itch is in the ON position *Po w er Cord should be connected No Plug & Pl.
14 Screen image is not centered or sized properl y . * Adjust pixel frequency (CLOCK) and FO CUS or press hot-key (AU T O) Picture has color defects ( w hite does not look w h ite) * Adjust RGB color .
15 ERROR MESS A GE & POSSIBLE SOLUTION C A BLE NOT CONNECTED : 1. Check that the signal-cable is p r operly connected, If the connector is loose, tighten the connector’s scre w s.
16 A PPENDIX SPECIFIC A T IONS Driving s y stem T F T Color LCD LCD Panel Size 51 cm( 20 ") Pi x e l pitch 0.2 58 mm( H )x 0.2 58 mm( V ) Brightness 300cd/ m2 ( T y p ical) Contrast 8 00:1( T y p.
17 S w itch • Auto Adjust Key • </V o l u me • >/ V o l u me • Po w e r Button • MENU External Controls: F unctions • Contrast • Brightness • Focus • Clock • H.
VESA MODES Horizontal Vertical Resolution Total Nominal Frequenc y +/- 0.5kHz Syn c Polarity Nominal Freq. +/- 0.5kHz Syn c Polari ty Nominal Pixel Clock(M Hz) 640 X 48 0 @ 60 Hz 80 0 X5 2 5 31.4 6 9 N 59.9 4 0 N 25.1 7 5 640 X 48 0 @ 72 Hz 83 2 X5 2 0 37.
19 15 6 10 11 15 15 - Pin Color Display Signal Cable PIN NO. DESCRIP T ION PIN NO. DESCRIP T ION 1. Red 9. + 5 V 2. Green 10. Logic Ground 3. Blue 11. Monitor Ground 4. Monitor Ground 12. DDC-Serial Data 5. DDC-return 13. H-S y nc 6. R-Ground 14. V-S y nc 7.
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