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Acer AL1702

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Comments to date: 3. Page 1 of 1. Average Rating:
slimvad 2:02am on Monday, June 7th, 2010 
I do some gameing and it keeps up with all games. had it in 3 days after ordering.Great job Newegg.right outta box,pluged in it in and works great. After about 4 hours of play my monitor starts flickering... so I reboot my computer . This is the best buy that I have seen and highly recommend it. Arrived in Sept 05, and bought two more of these monitors.
That Don Guy 12:21pm on Friday, May 14th, 2010 
Looks Good Poor quality, service from Acer appauling That this is the only acer product that I own but can see why they have grown so quickly. Decided to go for the ACER AL174MS monitor - 17" diagonal (actual picture - not tube size, as was the custom with CRT tubes).
Lornas 3:36pm on Sunday, March 21st, 2010 
It will do.... A cheap monitor that will do.. A dead pixel was my first complaint..not enough to motivate me to take the item back to Comet.

Comments posted on www.ps2netdrivers.net are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.

 

Documents

doc0

Service Manual

17-inch LCD Monitor AL1702
Service Manual Versions and Revision
N o. 1. Ve rs ion 1.0 R e le as e D ate May 12, 2004 R e vis ion O riginal release

Copyright

Copyright 2004 LiteOn Technology Corp. All Rights Reserved This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of LiteOn Technology Corp. ACER AL1702 Service Manual.

Trademarks

LiteOn is a registered trademark of LiteOn Technology Corp. All other trademarks are the property of their respective owners.

Printed in Taiwan.

AL1702 1) Circuit Description
1. 2. 3. Power Board Operation Therory -------------------------------------------------------------------------------------------- 3 Inverter -------------------------------------------------------------------------------------------------------------------------- 4 Interface ------------------------------------------------------------------------------------------------------------------------- 5 3.1 Top --------------------------------------------------------------------------------------------------------------------------- 5 3.2 Power ------------------------------------------------------------------------------------------------------------------------ 5 3.3 VGA & DDC interface ----------------------------------------------------------------------------------------------------- 5 3.4 Scaler MST8111A --------------------------------------------------------------------------------------------------------- 5 3.5 Panel interface -------------------------------------------------------------------------------------------------------------- 5 3.6 Audio ------------------------------------------------------------------------------------------------------------------------ 7 4. Others --------------------------------------------------------------------------------------------------------------------------- 7 4.1 Detection of POWER switch status ------------------------------------------------------------------------------------ 7 4.2 Display mode identification ---------------------------------------------------------------------------------------------- 7 4.3 Power ON sequence ------------------------------------------------------------------------------------------------------ 8 4.4 Power OFF sequence ----------------------------------------------------------------------------------------------------- 8 4.5List of I/O Pin Assignments of the I307 -------------------------------------------------------------------------------- 9

2) Trouble Shooting

1. 2. 3. 4. No display of screen (Screen is black, color of LED is amber) -------------------------------------------------------- 11 Nothing displays on screen (Screen is black, color of LED is green) ------------------------------------------------ 12 Checking the back light unit ----------------------------------------------------------------------------------------------- 15 Abnormal screen------------------------------------------------------------------------------------------------------------- 16

Page 1

AL1702
6. 7. Abnormal plug and play operation --------------------------------------------------------------------------------------- 18 Checking the interface circuit of sync signal ---------------------------------------------------------------------------- 19 7.1 Checking the control circuit of horizontal sync pulse ------------------------------------------------------------- 19 7.2 Checking the control circuit of vertical sync pulse ---------------------------------------------------------------- 9. Checking the resolution change IC movement -------------------------------------------------------------------------- 20 Checking the DC/DC converter circuit ----------------------------------------------------------------------------------- 21
10. Checking the Audio circuit [option] -------------------------------------------------------------------------------------- 22 11. Checking inverter board circuit -------------------------------------------------------------------------------------------- 23 12. Power board ------------------------------------------------------------------------------------------------------------------ 24

3) Spare Parts

Recommended Spare Parts List ------------------------------------------------------------------------------------------------- 25

Page 2

1. 1.1 1.2 Power Board Operation Line filter consists of C801, T801, C802, C803, C804. It eliminates high frequency interference to meet EMIs requirement. Rec & Filter Bridge diode D801 converts AC source into pulsed DC. This pulsed DC is smoothed and filtered by C805. R802 is an NTC ( negative thermal coefficient ) resistor, used to reduce inrush current to be within safe range. 1.3 1.4 Power transformer : T802 converts energy for square wave from power source C805 to secondary side to generate +12V and +22V. Output : The square wave from T802 is rectified by D809, D811, then filtered by C822, C817 to generate +12V and +22V respectively. I804 is the regulator for +5V output. 1.5 1.6 Driver : Q803 drive T802 from PWM control of I801 for power converted. FB : Negative feedback CKT consists of photo coupler I802 and adjustable regulator I803. It can maintain output voltages +22V and +12V at a stable level. 1.7 PWM : 1.7.1 Start : When power is turned on, Q801 conducts due to bias from C805 and R805,R803. C807 is charged a 16 volt and a starting current about 0.3mA to pin 7 of I801. I801 starts to oscillate and outputs a pulse train through pin 6 to drive Q803. 1.7.2 OPP : When Q803 turns on, C805 supplies a linearly increasing triangle current through the primary inductance of T802 to the driver Q803, once the peak value of this current multiplied by R811 exceeds1 volt, pulse train will be turn off immediately to protect Q803, T802 from being burned out. 1.7.3 Regulation : If output voltage +22V or 12V goes up, the R terminal of I803 gets more bias, accordingly photo transistor and photo diode flows more current. The voltage of pin 2 of I801 goes up too, making the pulse width of pin 6 of I801 to become narrower. So the output voltage +5V will be pulled down to a stable value. 1.7.4 OVP : If +22V or 12V goes up too much, the induced voltage on pin 4 of T802 becomes large also. Suppose that it is over 18 volts, ZD801 conducts, pin 3 of I801 is pulled up over 1 volt. The pulse train at pin 6 of I801 goes down to zero, shutting Q803 off immediately. 1.7.5 SCP : If output terminal is short to ground, photo transistor does not conduct, hence Q806 does not conduct either. Then oscillation of I801 is stop, shutting Q803 off immediately.

Power Board Block Diagram

Line Filter

Rec. & Filter

Power Transformer

Outpur Rec. & Filter

Driver

Page 3
2. 2.1 2.2 Inverter Operation This unit operates on an output voltage of 22V from power source. VCC: When On/Off pin of P802 is high level input, Q106 turns on and provides +5VDC for I101 power supply. Control IC: I101 (OZ960S) 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.3 Enable : When pin 3 of I101 is over 1.5V, I101 works. If it is under 1.5V, I101 turns off. OSC: When I101 enabled, R108/C115 (pin 17/pin18 of I101) determine the operating frequency. SST: C104 (pin 4 of I101) provides soft start function. Ignition: R109 (pin 8 of I101) provides higher operating frequency for more striking voltage until regulation of feedback of lamp current. C103 (pin 1 of I101) determine the striking time. Dimming control: The divided voltage of R106/R105/R104 control the duty pulse of burst-mode to drive Q105 and perform a wide dimming control for the CCFL. The burst-mode frequency is determined by C116. Regulation: Pin 9/pin 10 of I101 provide regulation of the CCFL current from feedback. The non-inverting reference (pin 10 of I101) is at 1.25V nominal. Protection: Open-lamp protection in the ignition period is provided through both pin1 and pin 2 of I101 to ensure a rated voltage is achieved and a required timing is satisfied. Removal of the CCFL during normal operation will trigger the current amplifier (pin 9/pin 10 of I101) output and shuts off the inverter. This is latch function. 2.4 2.4.1 Output drivers: The configuration prevents any shoot-through issue associated with bridge-type power conversion applications. Adjusting the overlap conduction between I102 P-MOSFET and I103 N-MOSFET, I101 N-MOSFET and I103 P-MOSFET, the CCFL current regulation is achieved. 2.4.2 2.5 2.6 Full-bridge switching/Transformer: I102/I103 /C123/T101 compose full-bridge switching to convert DC into AC for driver the CCFL. Detection: C128/C129/C132/D115/D114/C118 detect the output voltage and ensure a rated voltage by pin2 of I101. Feedback: D116/D117/R120/D108/R116 sense the lamp current for negative feedback and regulation. The divided voltage on R116 will be at 1.25V. Inverter Circuit Block Diagram
Regulator VDD Control IC : OZ960 ON / OFF U.V.P. Enable OSC SST Brightness control Dimming control Output driver Protection Ignition Regulation Feed back Detection

Full-bridge switching

Transformer

Page 4

3. 3.1 Interface Operation Top (Circuit diagrams MAIN PWB 2 of 8) This page is function block. (1) power. (2) VGA & DDC interface. (3) scaler MST8111B. (4) panel interface. (5) audio (option). Power (Circuit diagrams MAIN PWB 3 of 8) 3.2.1 P301 connector A 5V power supply for LCD module, MCU, logic. And a 12V power supply for audio function. It is generated from the P301 connector. 3.2.2 3.2.3 3.2.4 I301 : 3-terminal regulator A 2.5V power supply for scaler IC I305, it is generated from the 5V source. I302 : 3-terminal regulator A 3.3V power supply for scaler I305, it is generated from the 5V source. Q303, I312 : ON/OFF control for LCD module power ON/OFF control (PANELVCC_EN) is performed for power ON/OFF and also for the power saving sequence. 3.2.5 R306 : ON/OFF control for LCD module back light power ON/OFF control (BKLT_EN) is performed for black light power ON/OFF and also for the power saving sequence. 3.2.6 Q301,Q302 : Adjust back light luminance for LCD module It is adjusted back light luminance control (BKLT_ADJ) is performed for the back light luminance. 3.3 VGA & DDC interface (Circuit diagrams MAIN PWB 4 of 8) The analog video signals input, the AC-coupled video signal video signal is used to clamp the black level at 0V. and H/V sync to sclaer, and DDC plug & play function. 3.3.1 3.3.2 P302 connector The video input signals from the P302 connector. I304DDC EEPROM This IC is support DDC2B of the VESA standard, also plug and play for the PC host. 3.4 Scaler MST8111B (Circuit diagrams MAIN PWB 5 of 8) The I305 is scaled converter LSI for the LCD monitor. The analog R, G, B signal input entered from the video input circuit is converted into the digital data of video signal through the incorporated A/D converter. Based on this conversion, this device performs interpolation during pixel extension. These interpolation digital data are transformed to LVDS signal. The I305 source voltage is 3.3V and 2.5V, the device clock frequency is 14.318 MHz. The device control signal is from MCU through the 3-wire bus. The I305 scaler has support OSD function. 3.5 Panel interface (Circuit diagrams MAIN PWB 6 of 8) 3.5.1 P305 connector The P305 is LVDS bus, output to LCD module. The output voltage is 5 voltage. 3.5.2 MCU (Circuit diagrams MAIN PWB 7 of 8) The I307 MCU is system processor. It can programmed scaler, control power save sequence for the system, input keypad function, output LED, control audio function, and ISP / DDC2Bi function.

Page 5

3.5.3 3.5.4 X302 crystal The X302 crystal is 11.0592MHz, support the operated clock to the MCU. Reset circuit The C396, R379, D316 is support reset signal to the MCU, then MCU have output hardware reset signal (HWRESET) to the scaler. 3.5.5 I308EEPROM The I308 is 24LC16 EEPROM, the data transfer between I308 and MCU is effected through the IIC bus SCL (pin14) and SDA (pin13) of MCU. The OSD related setting data, I305 control data and other service data, to be stored in I308. 3.5.6 P308 connector The P308 has support keypad function. Control is give effect to for the push switch to be used when the user changes the parameters, in order to modify the respective setting values. Whether the switch has been pressed is identified with the switch input level that is turned L. Each switch input port is pulled up at outside of MCU. Related ports of I307 based on Table 1. Each parameter is stored in the I308 EEPROM, the contents of which are updated as required. The P308 have LED Green and Amber light, the LED Green signal pin 36 from I307 MCU, and the LED Amber signal pin 37 from I307 MCU. Table 1 Related ports of I307
Pin No. Pin 3 Pin 2 Pin 41 Pin 42 Pin 1

I/O I I I I I

Signal name KEY_POWER KEY_MENU KEY_DOWN KEY_MINUS KEY_PLUS
Function Soft power switch input Exit/Enter switch input switch input switch input switch input
Remarks Power key Enter / withdraw from OSD Down key - / Mute key + / Auto key
Audio control function The I307 MCU output signal control audio mute and power, the pin33 is mute signal, the pin32 is controlled audio power signal.

3.5.8 3.5.9

Scaler programmed function The I307 MCU is used DDR direct bus, between I305 MST8111B and MCU I307. ISP and DDC2Bi function The DDC2Bi is VESA standard for the host PC system, it can through DDC2Bi bus control LCD monitor. The I309 will off DDC_CLK and DDC_DAT signal, when LCD monitor is no power. Can use ISP function for firmware modification. The pin29 is bus clock (DDC_CLK), the pin28 is bus data (DDC_DAT). It is same of the IIC data bus.
3.5.10 The power save sequence function First disable I307 pin31 (BKLT_EN) from H to L of LCD module back light power, delay some time, then disable I307 pin9 (PANELVCC_EN) from H to L of LCD module power, and disable I307 pin32 (AUDIO_EN) from H to L of audio power, and through 3-wire bus programmed I305 MST8111B to power down mode.

Page 6

3.6 Audio (Circuit diagrams MAIN PWB 8 of 8) [OPTION] 3.6.1 P309 connector The audio signal input received from the audio input terminal P309 from the jack input of the jack board, P309 is applied to amplifier I311 of pin4 (L-CH) and pin9 (R-CH) through the low-pass filter consisting of R417, R418, C419 and C420. 3.6.2 3.6.3 P310 connector The audio signal is output to the audio output terminal P310, and to the internal speaker system. I310 MOSFET I310 MOSFET (CEM9435A) is cut audio power (12V) for the power save sequence. The signal (AUDIO_EN) is ON/OFF I310 MOSFET through the Q311 control. 3.6.4 I311 amplifier The I311 TDA7496L is audio amplifier, I311 operated power voltage is 12V. I311 pin4 and pin9 is audio input port. I311 pin14 and pin17 is audio output port. I311 pin 12 is mute input from I307 MCU. The pin 6 is audio volume from the I305 MST8111B. 4 4.1 Others Detection of POWER switch status The MCU identifies the ON status of the two power supplies. The identification is made when the power supply is turn off. For example, if the power supply is turn off with the POWER switch, the POWER switch must be turn on when active the power supply again. If the power supply is turned off by pulling out the power cord, then this power supply can be turned on by connecting the power cord, without pressing the POWER switch. 4.2 4.2.1 Display mode identification Display mode identification The display mode of input signal is identified based on Table 2. When the mode has been identified through the measurement of horizontal and vertical frequencies, the total number of lines is determined with a formula of Horizontal frequency / Vertical frequency = Total number of number of lines. Final identification can be made by examining the coincidence of the obtained figure with the number of lines for the mode identified from the frequency. The Distinction Hsync and Vsync of each mode is shown in Table 3. When the detected frequency if the sync signal has changed, the total number of lines should be counted even through it is range identified frequency in the same mode. 4.2.2 Out of range This out of range mode is assumed when the frequency out of the horizontal / vertical signal is as specified below. Vertical frequency : 56 ~ 76 Hz. Horizontal frequency : 30 ~ 81.1KHz. 4.2.3 Power save mode The power save mode is assumed when the horizontal / vertical signals are as specified below. If there is no horizontal sync signal input. If there is no vertical sync signal input. If the horizontal sync signal is outside the measuring range of MST8111B. If the vertical sync signal is outside the measuring range of MST8111B.

Page 7

Table 2 video mode

Mode 17

Resolution 720x400 (70Hz) 640x480 (59.94Hz) 640x480 (66.67Hz) 640x480 (72Hz) 640x480 (75Hz) 800x600 (56.25Hz) 800x600 (60Hz) 800x600 (72Hz) 800x600 (75Hz) 832x624 (74.55Hz) 1024x768 (60Hz) 1024x768 (70Hz) 1024x768 (75Hz) 1152x864 (75Hz) 1280x960 (60Hz) 1280x1024 (60Hz) 1280x1024 (75Hz)
H-Freq (KHz) 31.469 31.37.861 37.5 35.156 37.879 48.077 46.875 49.722 48.363 56.476 60.023 67.63.981 79.976
Band Width (MHz) 28.322 25.175 30.24 31.5 31.49.5 57.75 78.135
Polarity H V + + + + + + + + + + + + + + + + + + +
Table 3 the Hsync, Vsync distinction
Indication resolution 720 x x 480
Distinction Hsync 30.5KHzfH32.5KHz 30.5KHzfH32.5KHz 34KHzfH36KHz 36.9KHzfH38.9KHz 36.5KHzfH38.5KHz 34.2KHzfH36.2KHz 36.9KHzfH38.9KHz 47.1KHzfH49.1KHz 45.9KHzfH47.9KHz 48.7KHzfH50.7KHz 47.4KHzfH49.4KHz 55.5KHzfH57.5KHz 59KHzfH61KHz 66.5KHzfH68.5KHz 59KHzfH61KHz 62.9KHzfH64.9KHz 79KHzfH81KHz
Distinction Vsync 69HzfV71Hz 59HzfV61Hz 65.7HzfV67.7Hz 71.8HzfV73.8Hz 74HzfV76Hz 55.3HzfV57.3Hz 59.3HzfV61.3Hz 71.2HzfV73.2Hz 74HzfV76Hz 73.5HzfV75.5Hz 59HzfV61Hz 69HzfV71Hz 74HzfV76Hz 74HzfV76Hz 59HzfV61Hz 59HzfV61Hz 74HzfV76Hz

800 x 600

832 x x 768

1152 x x x x 1024

The fixed mode 17

Page 8

4.3 Power ON sequence When the POWER switch is pressed, the POWER OFF signal is turned H. when this H potential is detected, the CPU begins to establish the respective power supplies according to the sequence show below.

Power Switch LED_G (LED)

157 ms 1.8 sec
PANELVCC_EN (Panel VCC) PCLK/DATA (LVDS bus) BKLT_EN (Backlight Power) AUDIO_EN (Audio VCC)

1.84 sec 2 sec

Power OFF sequence When the POWER switch is pressed, while the power supply is ON, the POWER ON signal is turned H. when this H potential is detected, the CPU begins to turn off the respective power supplies according to sequence show below.
Power Switch LED_G (LED) PANELVCC_EN (Panel VCC) PCLK/DATA (LVDS bus) BKLT_EN (Backlight Power) AUDIO_EN (Audio VCC) 90 ms 350 ms

316ms 90 ms 1.55 sec

Page 9
4.5 List of I/O Pin Assignments of the I307 Initial Function Setting 3 P5.0 KEY_POWER H ON/OFF monitor power 2 P5.1 KEY_MENU H OSD enter/exit enable 1 P5.2 KEY_PLUS H OSD right enable 42 P5.3 KEY_MINUS H OSD left enable 41 P5.4 KEY_DOWN H OSD down enable 38 P1.0 LED_G H LED green enable 37 P1.1 LED_A H LED amber enable 20 P1.2 SCL H Clock of 3-wire bus for scaler 21 P1.3 SDA H Data of 3-wire bus for scaler 22 P1.4 CSZ H Chip select of 3-wire bus for scaler 25 P1.5 HWRESET H Reset enable to scaler 29 P3.0 RXD H UART interface data IN 28 P3.1 TXD H UART interface data OUT 19 P3.2 INT H Interrupt signal from the scaler 13 P3.4 ISDA H EEPROM data bus 14 P3.5 ISCL H EEPROM clock bus 27 P6.0 DDC_WP L DDC EEPROM write protection 26 P6.1 VGA_DET H VGA cable connected 9 P6.3 PANELVCC_EN L Panel power enable 31 P6.5 BKLT_EN L Back light power enable 32 P6.6 AUDIO_EN L Audio power enable 33 P6.7 MUTE L Audio mute enable Note : Other I/O pin assignments of the I305 MST8111B 73 PWM0 BKLT_ADJ Backlight brightness control 74 PWM1 VOLUME Audio volume control Pin No. Port Signal Name

Page 10

AL1702 1. No display of screen (Screen is black, color of LED is amber)
Does OSM display when you push PROCEED buttom.
When a sugnal isn't being inputed, it is indicated with "VIDEO INPUT". it is indicated with "OUT OIF RANGE" at the time of the frequency that it can't be distinguished.

No Yes

Proceed "No OSM display" section.
Check if the sync signal from computer is output and if the video cable is connected normally.
Input the sync signal of computer, or change the cable.
Proceed "checking the resolution change IC movement" section.

Page 11

AL1702 2. Nothing displays on screen (Screen is black, color of LED is green)

Is backlight lit?

Refer "Checking the backlight unit" section"
Does computer output RGB video signals?
Check the video cable for failure. Check the host for output signal with all black only.
1)Change pattern of video signal output on the host. 2)Rsconnect the video cable. 3)Change the video cable.
Check OSM menu is display on screen when you push the "PROCEED" key.
Check if the LCD video signal cable is connected between the MAIN PWB and LCD module.
Failure Point NG OK Proceed "Abnormal sreen" dection" The cable is disconnected.

Next Page

Page 12

Continue

Check the 3.3V power are supplied on I302, pin2, 4.
Check if the voltage on I302 pin3 that is power DC at 5V. Failure Point
1) Printed wire broke between P301 pin1, 2 and I302. 2) Check power board.
Failure Point I302 is failure
Check the 2.5V power are supplied on I302, pin2, 4.
Check if the voltage on I302 pin3 that is power DC at 5V. Failure Point NG 1) Printed wire broke between P301 pin1, 2 and I302. 2) Check power board.

Page 13

Check the 5V power are supplied on P305 pin 1, 2, 3 (to the LCD panel)
Check if theVoltage on I312 pin2 that is DC power at 5V.
Failure Point NG OK 1) FB314 is open. 2) Printed wire broke between P305 pin1, 2, 3, FB304, and P301 pin1, 2.
Check if the TTL level on I312 pin,1 that TTL level is low. OK Check the PANELVCC_EN signal of the rectangle input Q303 pin2 at TTL high level.

Failure Point I312 is failure. NG OK
Failure Point 1) Prined wire broke between Q303 pin 3, R309, R308 and I312 pin1. 2) Q303 is failure.
Failure Point Check the P305 all LVDS signals. 1) Printed wire broke between Q303 pin 2 and I307 pin9. 2) I307 is failure.
Failure Point 1) Printed wire broke betweenP305 and I305 LVDS signals. 2) I305 is failure.
Failure Point 1) The LVDS cable broke between P305 and LCD module. 2) LCD module is failure.

Page 14

AL1702 3. Checking the back light unit
Is +12V supplied to inverter PWB ? (by the power board)
Failure Point NG OK 1) Inverter cable disconnection. 2) Power board failure.
Check the BKLT_EN signal of the rectangle input P301 pin 6 at TTL high level.
Failure Point NG OK 1) printed wire broke between P301 pin6, R306 and I307pin 31. 2) I307 is failure.
Check the BKLT_ADJ signal of the input P301 pin5 from I305 pin73 is a PWM signal.
Failure Point NG OK 1) printed wire broke between P301 pin5, Q301, Q302 and I305 pin73. 2) I305 is failure.
Failure Point Back light unit of LCD module is failure.

Page 15

AL1702 4. Abnormal screen
Check the R, G, B video signal from computer input on P302 of video connector.
Failure Point 1) No R, G, B video signals output from host computer, check computer. 2) Video signal cable disconnection.
Check the R, G, B input video signals on I305 pin63, 60, 58 respectively that their level is 0.5 to 0.7Vp-p.
Failure Point In the case of the Red signal. (A Green and Blue signal is the same path, too.) 1)Printed wire broke between P302 pin 9 and I305 pin63. 2) Video cable is failure. 3) R322 is short or open. 4) R318 is short or open. 5) C332 is short or open.
Check all LVDS signals being output to P305 from I305?
Failure Point Printed wire broke between I305 and P305.
Prpcess "Checking the resolution change IC movement" section.

Page 16

AL1702 5. Abnormal OSM display adjust problem
Check the input TTL level whether was changed when pressed function keys on the P308 pin3, 4, 5, 6. (normal is high level, when push buttom, generated low level plus)
Failure Point 1) Function key wire disconnection. 2) Function key wire is failure. 3) Function key board is failure.
Check the input TTL level whether was changed when pressed function keys on the I307 pin1, 2, 41, 42. (normal is high level, when push buttom, generated low level plus)
Failure Point 1) Printed wire broke between P308 pin3 and I307 pin41. 2) Printed wire broke between P308 pin4 and I307 pin2. 3) Printed wire broke between P308 pin5 and I307 pin1. 4) Printed wire broke between P308 pin6 and I307 pin42. 5) C404, C405, C406, C407 is short. 6) R367, R368, R369, R370 is short or open.

Failure Point I307 is failure.

Page 17

AL1702 6. Abnormal plug and play operation
Confirm the host computersupplies DDC2 mode.
Failure Point The host machine is not communicatiog in DDC2 mode.
Check the voltage on P302 pin13 that is power DC 5 V.
Failure Point TheVideo cable is failure.
Check the voltage on I304 pin8 that is power DC 5 V.
Failure Point 1) Printed wire broke between I304 pin8, D309, D310 and P302 pin13. 2) D309 or D310 is failure. 3) D315 is failure.
Check the voltage on P302 pin11, 12 that is serial data / clock signal.
Check the output signal of serial data / clock on I304 pin5, 6.
Failure Point I304 is failure.
Failure Point 1) Printed wire broke between I309 pin2, 3, I304 pin5, 6 and P302 pin11, 12. 2) I309 maybe failure. 3) R336, R337 is open. 4) C349, C350 is short.

Page 18

AL1702 7. Checking the interface circuit of sync signal 7.1 Checking the control circuit of horizontal sync pluse
Check the horizontal sync signal on P302 pin3 TTL level. Failure Point NG OK Video cable is failure.
Check the horizontal sync signal on I305 pin37 TTL level.
Failure Point 1) Printed wire broke between P302 pin3 and I305 pin37. 2) FB313, R329 open. 3) R331, C346 short.
Failure Point Process "Checking the resolution change IC movement" section.
7.2 Checking the control circuit of vertical sync pluse
Check the horizontal sync signal on P302 pin2 TTL level.
Failure Point Video cable is failure.
Check the horizontal sync signal on I305 pin36 TTL level.
Failure Point 1) Printed wire broke between P302 pin3 and I305 pin36. 2) FB312, R328 open. 3) R330, C345 short.

Page 19

AL1702 8. Checking the resolution change IC movement
Check +3.3V supply on I305 pin11, 21, 84, 94, 104, 114, 126, 55, 65, 35, 45, 51, 53.
Proceed " Checking the DC/DC converter circuit" section.
Check +2.5V supply on I305 pin18, 87, 97, 117.
Check X301 14.318MHz clock input to I305 pin33 and 34 at TTL level.
Failure Point NG OK 1) Printed wire broke between X301 and I305 pin33, 34. 2) C371, C375 short or open. 3) X301 failure.
Check I305 pin32 HWRESET signal is low level at normal operation.
Failure Point NG OK 1) Printed wire broke between I305 pin32 and I307 pin23. 2) R410, R380 open. 3) I307 failure.
Check I305 pin69, 70, 71 3-wire bus signal is (Same of the IIC signal).
Failure Point NG OK 1) Printed wire broke between I305 pin69, 70, 71 and I307 pin20, 21, 22. 2) I307 failure.
Failure Point I305 failure.

Page 20

AL1702 9. Checking the DC/DC converter circuit
Check the 5V is output from P301 pin1, 2
Failure Point 1) Power wire disconnection. 2) Power board is failure.

Check the 5V is input to I302 pin3.
Failure Point 1) Printed wire broke between P301 pin1. 2 and I302 pin3. 2) FB301, FB302 open.
Check the 3.3V is output from I302 pin2, 4.
Failure Point NG OK I302 is failure.
Check the 5V is input to I301 pin3.
Failure Point 1) Printed wire broke between P301 pin1. 2 and I301 pin3. 2) FB301, FB302, FB305 open.
Check the 2.5V is output from I301 pin2, 4.
Failure Point I301 is failure.
Failure Point 1) Printed wire broke between I301 pin2. 4, I302 pin2, 4 and I305 MST8111A power supply pin. 2) FB314, FB315, FB316, FB317, FB318, FB319 open.

Page 21

AL1702 10. Checking the Audio circuit [OPTION]
Check the Audio signal input to P309
Failure Point 1) Audio wire disconnection. 2) Audio Jack board failure.
Check the 12V is input to I310 pin5, 6, 7, 8. Failure Point NG OK 1) Printed wire broke between P301 pin7. 8 and I310 pin1, 2, 3. 2) FB320 open. 3) Printed wire broke between I307 pin32 and I310 pin4. 4) Q311 failure. 5) I310 failure.
Check the 12V is input to I311 pin15, 16.
Failure Point NG OK 1) Printed wire broke between I310 pin5, 6, 7, 8 and I311 pin15, 16. 2) L301 open. 3) C412 short.
Check the VOLUME PWM signal input to I311 pin6.
Failure Point 1) Printed wire broke between I305 pin74 and I311 pin6. 2) C422 short. 3) I305 failure.
Check the MUTE signal is input to I311 pin12 at high level. Failure Point NG OK 1) Prined wire broke between I307 pin33 and I311 pin12. 2) C414 short. 3) I307 failure.
Check the Audio output signal to Speaker.
Failure Point NG OK 1) Speaker failure. 2) Prined wire broke between I311 pin14, 17 and P310. 3) C415, C418 open or short.
Failure Point I311 failure.

Page 22

AL1702 11. Checking inverter board circuit
Check C101 pin is around. On/off pin of P802 is over 2V. Brightness pin is between 0V and 3.5V. OK NG It is not inverter problem.
Check pin 5 of I101 is 5V. NG
Check Q106, Q102 and repair them.

Check CN102, CN103 is connected right. NG OK Check CCFL and repair them.
Check pin 3 of I101 is over 2V. OK NG Check R128 and repair it.
Check pin 18 of I101 is triangle pulse. OK NG Check C115, R108, I101 and repair them.
Check pin 4 of I101 there is soft start edge up to 4V and pin 11, 12, 19, 20 there is some pulse output. OK NG Repair I101.
Check pin 2 of I101 there is below 2V from output detection. OK NG Check C128/C129/C132/D115/ D114/C118 and repair them.
Check full-bridge (I102, I103, D102, D103, C123) work right. OK NG Repair them.
Check transformer (T101) work right. and repair it.

Page 23

AL1702 12. Power Board
Check output voltage +5V, +12V and 22V is right or not. Yes It is not power board problem.
Check power switch is turn on or not. No

Turn switch on.

Check power cord (P801), signal cable (P302), P802, P803, CN102, CN103 is connected right or not. No Yes Check C805 is about DC140V-330V or not. Yes No Check F801, D801, P801 and repair them. Connect it right
Check C807 is over 10V or not. No Check R805, R803, I801 and repair them.
Check pin 6 of I801 have same pulse or not. No Check peripheral co,of I801 and repair them.
Check pin 1 of T802 have same pulse or not. Yes No Check Q803, R813, R814, D806, R812 and repair them.
Check peak voltage of R811 triangle pulse is up to 1 volt or not. Yes No Check D804, R807 and repair them.
Check D809, D810, D811, C818, C817, C822, T802 have same short circuit, or the output +5V/+12V/+22V is over load. No Yes Repair them.
Check feedback circuit around I802, I803 and the other components and repair them.

Page 24

3. Recommended Parts List
Note: 1. If you have spare parts need, please check BOM to get the last release part number and related information. No. 13 Location I301 I302 I304 I304 I305 I308 I308 I312 I307 X301 X302 I311 L301 Part Number 6111456131 Description IC Linear AIC 1117-25CETR TO-252 IC Linear AIC 1084-33CM TO-263 IC 24LC02B SOP-8 MICROCHIP IC M24C02 SOP-8 ST IC MST8111B QFPQ-128 Mstar IC 24LC16B SOP-8 MICROCHIP IC M24C26 SOP-8 ST FET P-Channel AO3401 SOT-23 AOS IC MTV312MV64-AJ PLCC44 Myson Crystal 14.318MHz AT-49 TOPICS Crystal 11.0592MHz AT-49 TOPICS IC Amplifier TDA7496L PDIP20 ST Coil Choke 45uH DRWW 10x10

Page 25

ZONE LTR A ECN

REVISIONS DESCRIPTION

APPROVED

RELEASE FOR PRELIMINARY

ITEM 1 SUB-ITEM 1-1 1-2 1-3 PART NO. 7737510250-0A 7742226850-0A 7742806820-0A 7742302330-0A 6814701400 7746501720-0A 7737807400-0A 7748708640-0A 7746501590-0A 7742002971-0A 7111230061-0A 5114300037 7111230061-0A 7116240081-0A 5113300481 7111230061-0A 7110430051 7748708650-0A 7130430061 7742404500-0A 7140330122-0A 7746203470-0A 7110430051 7742225150-0A 7737706850-0A 7742609580-0A 7742003070-0A 7742003060-0A 7748707730-0A 7742609570-0A 7742609560-0A 7112750581-0A 7385001501-0A 7742001150-0A 7742609590-0A 7140240201-0A 7740410053-0A 7742001030-0A 5114100017 7140840122-0A 7740201140-0A 6857104501 7141220061-0A DESCRIPTION F/C ASS'Y FRONT COVER PUSH BUTTON LENS PUSH BUTTON BD SCREW M3x8L(BUTTON-BD) QDI PANEL BARRIER BOTTOM QDI-CHASSIS ASS'Y QDI CHASSIS BK BARRIOER TOP RUBBER SCREW M3x6(I/F BD) POWER BD SCREW M3x6(PW BD) SCREW M4x8(PW BD) INTERFACE BD SCREW M3x6(I/F BD) SCREW M3x5(PANEL) AC SUPPORT SCREW M3x6(AC BK) LOGO TYPE SCREW M4x12(CHASSIS-F/C) SHIELD
SCREW M3x5(CHASSIS-SHIELD)

Q'TY 1 4

6 6-1 6-2 6-21 21-1 21-2 21-3 21-4 21-5 21-6 21-7 21-8 21-9 21-10 21-11 21-12 21-25 26

23 21-5 21-9

21-4 21-6

21-2 21-8 21-7

21-1 21-10

21-11 21-12

REAR COVER HINGE+BASE ASS'Y AXIS STAND WASHER-R WASHER-L AXIS-SUPPORT AXIS-WHEEL-R AXIS-WHEEL-L SCREW M5x58(R-AXIS-L) WASHER(AXIS) NUT M5-7210050341(AXIS) STAND-BLOCK SCREW M4x14(STAND-BLOCK) BASE FOOT PAD AUDIO BD SCREW M4x12(FC-R/C)
SCREW M4x14-7110440142(R/C-AXIS)
SPEAKER SCREW M2x6(SPEAKER)
MATERIAL: FINISH: PROCESS: USED ON: DRAWN DESIGN CHECK APPROVE SCALE

SEE TABLE

LITE-ON TECHNOLOGY CO.

M17AAQ

M17AAQ EXPLODE DWG

DWG. NO. PART NO.

Carol Huang

07/23'03

ACER AL1502 / AL1702
SCHEMATIC REV 02 PTB-April 2004

ROAD MAP

DESCRIPTION

SHEET NO. 7

TITLE SHEET TOP POWER VGA & DDC INTERFACE SCALER MST8111/6B PANEL INTERFACE AUDIO

REVISION HISTORY

REV. 02

R372 4K7(NC)

R373 4K7

R374 4K7

R375 4K7
AD0 AD1 AD2 AD3 RDZ WRZ ALE HW_RESET LED_G LED_A

100 C400 0.1uF

AD0 AD1 AD2 AD3 RDZ WRZ ALE HWRESET
ADADADADRDZ 4 WRZ 4 ALE 4 HWRESET 4

R389 VCC5V 4K7

R390 4K7(NC)

R391 4K7(NC)

R385 4K7(NC)
C399 R386 R387 4K7 R388 4K5 VCC5V P4 JWT-A2001WV2-04(NC) 0.1uF I309 VCC OE2 1B 2B 0E1 1A 2A VSS DDC_DAT 3 DDC_CLK 4K7 VCC5V RQ308 MMBT3904 4KVCC5V

NC7WB3125

R4K7(NC) RQ309 MMBT3904 CJWT-A2001WV2-09 C401 0.1uF

LED_A 3 4K7

R377 4K7(NC) RQ310 MMBT3904 C380 1uF 4KLED_G
P308 R403 R404 R405 R406 R407 R408 R409 C402 0.1uF C403 0.1uF C404 0.1uF C405 0.1uF C406 0.1uF C407 0.1uF 100 KEY_DOWN KEY_MENU KEY_PLUS KEY_MINUS AMBER GREEN KEY_POWER

M15_17AAX MCU

I310 CEM9435A VDD15V FB320 2
AUDIO_15V PBY201209T-300Y-S C409 0.1uF FB321 R411 10K R412 C410 100uF/25V 4 AUDIO_15V 8 L301

VDD15V

45uH DRWW 10 X 10

2,3,4,5,6

PBY201209T-300Y-S ANA-GND

R413 10K 4K7

C411 0.1uF VCC5V VCC5V 2,3,6

RAUDIO_EN 4K7 2

ANA-GND
Q311 MMBT3904 R414 100K R416 MUTE 6 10K C412 470uF/25V C413 0.1uF C414 0.1uF

ANA-GND ANA-GND

PJWT-A2001WV2-03 AUDIO_IN_R AUDIO_IN_L R417 R418 1K 1K IN_R IN_L C417 R419 47K FB322 R420 47K 1.0uF/50V C419 47pF C420 47pF C421 C416 1.0uF/50V

G2 G1 INR

G3 G4 G5 G6 G7 VAO_R Vs Vs

OUTR STBY MUTE OUTL

14 470uF/25V 17 470uF/25V C418

SP_R+ P4 JWT-A2001WV2-04

INL SVR

AUDIO IN

100uF/25V

I311 TDA7496L

PBY201209T-300Y-S ANA-GND S-GND S-GND ANA-GND

RVOLUME 62K

R422 220K R423 180K C422 0.1uF

M15_17AAX AUDIO

Printed in Taiwan

doc1

Analog LCD Monitor AL1702 Users Manual

TABLE OF CONTENTS

FCC compliance statement.. 1 DOC compliance notice.... 1 Introduction... 2 Features.... 2 Unpacking... 3 Attaching/Removing the base... 4 Screen position adjustment... 4 Connecting the power cord.. 5 Safety precaution.... 5 Cleaning your monitor... 5 Preset modes... 6 Power saving... 7 DDC.... 7 Installation... 8 User controls.... 9 Troubleshooting....13 Specification....14

AL1702

FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide resonable protection against radio frequency interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause interference to radio communications. However, there is no guarantee that intereference will not occur in a particular installation. If this equipment does cause interference to radio or television reception (this can be determined by turning this equipment off and on), the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between this equipment and the receiver. Connect this equipment to an outlet on a circuit different from which the receiver is connected to. Consult the dealer or an experienced radio/TV technician for help. Caution: To comply with the limits for an FCC Class B computing device, always use the shielded signal cable supplied with this unit. Caution to the user: The Federal Communications Commission warns the user that changes or modifications to the unit not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. Notice of Compliance Canadian Interference-causing Equipment Regulations DOC Compliance Notice: This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. DOC Avis de Conformation Le prsent appareil numrique nemet pas de bruits radiolectriques dpassant les limites applicable aux appareils numriques de la class B prescrites dan le Rglement sur le brouillage radiolectriques dict par le ministre des Communications du Canada.

E-2 Users Guide

INTRODUCTION
Congratulations for purchasing model AL1702, a high performance 17-inch color TFT LCD monitor. The AL1702 monitor provides flicker-free and color images at optional resolutions. Through this user guide, we will introduce you step-by-step all the features, functions and technical specifications of the LCD monitor. Surely you will have a refreshing experience working with the monitor.

FEATURES

The AL1702 is a 17-inch TFT LCD monitor that is intelligent, microprocessor-based and ergonomically designed display, compatible with most analog RGB (Red, Green, Blue) display standards, including PS/V, PS/2, optional for Apple Macintosh Centris, Quadra, and Macintosh II family signals. The LCD monitor is capable of displaying crisp and vibrant color graphics with VGA, SVGA, XGA, SXGA (non-interlaced), and most Macintosh compatible color video cards. The monitor is able to properly function even in case of upgrade video cards or software because of the wide auto-scanning compatibility range without requiring to buy a new monitor. The internal microprocessor digitally controls auto-scanning. For horizontal scan frequencies between 30 KHz and 81 KHz, and vertical scan frequencies between 55 Hz and 76 Hz. In each frequency mode, the microprocessor-based circuitry allows the monitor to function at the precision-of a fixed frequency. The resident memory allows for storing factory default settings and also additional user adjustment parameters. The maximum resolution achievable is SXGA (1280 x 1024), best suited for Windows applications The compact and sleek cabinet design saves lot of your desk space and makes your desk look neat and tidy. The monitor is also compliant with the most stringent environmental scheme of TCO 99. In this scheme, no environmental harmful substances are used during the entire manufacturing process.

UNPACKING

Please check the following items are present when you unpack the box, and save the packing materials in case you will need to ship or transport the monitor in future. LCD Monitor

Speakers

AC Power Cord

Audio Cable

User Manual

E-4 Users Guide

Attaching / Removing the Base
Install: Align the four hooks on the bottom of the monitor with the corresponding slots on the bottom of the base. Remove: Depress the hook as indicated first before removing the base and follow the arrow direction to remove it.
SCREEN POSITION ADJUSTMENT
In oder to optimize the best viewing position, you can adjust the tilt of the monitor by using both of your hands to hold the edges of the monitor as shown in the figure below. The monitor can be adjusted to 30 degrees up or 5 degrees down as indicated by arrow below.
CONNECTING THE POWER CORD
Check first to make sure that the power cord you use is the correct type required for your area. This monitor has a universal power supply that allows operation in either 100/120V AC or 220/240 V AC voltage area. No user-adjustment is required. Plug one end of the power cord to the AC Inlet, plug another end to a proper AC outlet. For unit using at 120 V AC: Use a UL Listed Cord Set, Type SVT wire and plug rated 10 A/125 V. For unit using at 220/240 V AC (outside of U.S.): Use a Cord Set consisting of H05VV-F cord and plug rated 10 A, 250 V. The cord set should have the appropriate safety approvals for the country in which the equipment will be installed.

SAFETY PRECAUTION

Avoid placing the monitor, or any other heavy object, on the power cord to avoid damage to the cable. Do not expose the monitor to rain, excessive moisture, or dust. Do not cover the ventilation slots or openings of the monitor. Always put the monitor in a place where there is adequate ventilation. Avoid placing the monitor against a bright background or where sunlight or other light sources may reflect on the face of the monitor. Place the monitor just below eye level. Handle with care when transporting the monitor. Refrain from giving shock or scratch to the screen, as screen is fragile.

CLEANING YOUR MONITOR

Please carefully follow the below guidelines when cleaning the monitor. Always unplug the monitor before cleaning. Use a soft cloth to wipe the screen and cabinet front and sides. Apply a small quantity of alcohol to a soft cloth to clean the monitor screen, if requires more than dusting.

E-6 Users Guide

PRESET MODES
To reduce the need for adjustment for different modes, the monitor has default setting modes that are most commonly used as given in the table below. For optimum adjustment, the user is suggested to perform the Auto Setup under Windows Full Screen pattern. If the mode in use does not match one of the defaults, the user can store their preferred modes in the user modes. The monitor is capable of storing up to 9 user modes. The only condition to store as a user mode is the new display information must have 1 KHz difference for horizontal frequency or 1 Hz for vertical frequency or the sync signal polarities are different from the default modes. Mode 17 VGA VGA MAC VESA VESA VESA VESA VESA VESA MAC VESA VESA VESA VESA VESA VESA VESA Resolution 720 x x x x x x x x x x x x x x x x x Hz 60 Hz 66 Hz 72 Hz 75 Hz 56 Hz 60 Hz 75 Hz 72 Hz 75 Hz 60 Hz 70 Hz 75 Hz 60 Hz 75 Hz 75 Hz 60 Hz H. Freq. (KHz) 31.47 31.47 35.00 37.86 37.50 35.16 37.88 46.88 48.08 49.72 48.36 56.48 60.80 67.Band Width (MHz) 28.322 25.175 32.24 31.5 31.40 49.57.75 78.108 Polarity H + + + + + + + + + V + + + + + + + + + +

POWER SAVING

The monitor will be driven into Power Saving mode by the control signal from the display controller, as indicated by the amber-color power LED. State ON Active OFF Power Consumption Normal <3W LED Light Green Amber
The power saving states will be kept until a control signal has been detected or the keyboard or mouse is activated. The recovery time from Active OFF state back to ON state is around 3 seconds.
To make your installation easier, the monitor is able to Plug and Play with your system if your system also supports DDC protocol. The DDC (Display Data Channel) is a communication protocol through which the monitor automatically informs the host system about its capabilities, for example, supported resolutions and corresponding timing. The monitor supports DDC2B standard.

E-8 Users Guide

INSTALLATION
To install the monitor to your host system, please follow the steps as given below: Steps 1. Connect Video Cable a. Make sure both the monitor and computer are powered-OFF. b. Connect the video cable to the computer. 2. Connect power cord Connect the power cord to the monitor, then to a properly grounded AC outlet. 3. Connect the Audio Cable. 4. Power-ON Monitor and Computer Power-ON the monitor first, then power-ON the computer. This sequence is very important. 5. If the monitor still does not function properly, please refer to the troubleshooting section to diagnose the problem.

Please dont open the Cover.

USER CONTROLS

Front Panel Controls 1. Power Switch: To turn ON or OFF the power. 2. Power LED: Lights up to indicate the power is turned ON. 3. Auto Adjust button / Exit: 1) When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu). 2) When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus. 4. </Volume: Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated. 5. >/Volume: Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated. 6. MENU / ENTER: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status.

Users Guide

HOW TO ADJUST A SETTING 1. Press the MENU-button to activate the OSD window. 2. Press < or > to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or > to change the settings of the current function. 5. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4.

ADJUSTING THE PICTURE

The descriptions for function control LEDS

Main Menu Icon

Sub Menu Icon
Sub Menu Item Contrast Brightness
Description Adjusts the contrast between the foreground and background of the screen image. Adjusts the background brightness of the screen image. Adjusts picture Focus

Adjusts picture Clock

AL1702 Main Menu Icon Sub Menu Icon

Sub Menu Item

Description

H. Position

Adjust the horizontal position.
V. Position N/A N/A Warm Cool User /Red
Adjust the vertical position. Set the color temperature to warm white. Set the color temperature to cool white.

User/Green

Adjusts Red/Green/Blue intensity.
User/Blue N/A N/A N/A N/A N/A N/A N/A N/A Deutsch Francais Espanol Italiano Multi-language selection. English
Users Guide Sub Menu Icon
Adjust the horizontal position of the OSD.

V. Position

Adjust the vertical position of the OSD.
OSD Timeout N/A Auto Config
Adjust the OSD timeout. Auto Adjust the H/V Position, Focus and Clock of picture. Show the resolution, H/V frequency and input port of current iput timing. Clear each old status of Autoconfiguraation and set the color temperature to Cool. Save user adjustment and OSD disappear.

Information

TROUBLESHOOTING
Before sending your LCD monitor for servicing, please check the troubleshooting list below to see if you can self-diagnose the problem. Problems Current Status LED ON LED OFF No Picture LED displays amber color Remedy Using OSD, adjust brightness and contrast to maximum or reset to their default settings. Check the power switch. Check if AC power cord is properly connected to the monitor. Check if video signal cable is properly connected at the back of monitor. Check if the power of computer system is ON. Unstable Picture Check if the specification of graphics adapter and monitor is in compliance which may be causing the input signal frequency mismatch. Using OSD, adjust RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION and VPOSITION with non-standard signals. Using OSD, in case of missing full-screen image, please select other resolution or other vertical refresh timing. Wait for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or powering OFF the monitor. Abnormal Sound No sound, or sound level is too low Check the audio cable with the host PC is connected. Check if the volume setup of the host PC is in minimum position and try to raise the volume level.

Abnormal Picture

Display is missing, center shift, or too small or too large in display size

SPECIFICATION

Driving system Size Pixel pitch LCD Panel Brightness Contrast Viewable angle Response time Video H-Frequency V-Frequency Display Colors Dot Clock Max. Resolution Plug & Play EPA ENERGY STAR Input Connector Input Video Signal Maximum Screen Size Power Source ON Mode OFF Mode TFT Color LCD 43.2cm(17.0") 0.264mm( H )x 0.264mm( V ) 250cd/m2 (Typical) 400:1(Typical) 1400 (H) 1250 (V) 25 ms R,G,B Analog Interface 30KHz - 81KHz 55-75Hz 16.2M Colors 135MHz 1280 x 1024 @75Hz VESA DDC/DDC2B <45W < 3W D-Sub 15pin Analog:0.7Vp-p(standard), 75 OHM, Positive Horizontal : 337.92mm Vertical : 270.34mm 100~240VAC,47~63Hz
AL1702 Operating Temp: 50 to 350C Storage Temp.: -200 to 600C Operating Humidity: 10% to 85% 374(W) x 373(H) x 200(D)mm 4.6kg Unit (net) Auto Adjust Key >/ Volume </Volume Power Button MENU/ Exit Contrast Brightness Focus Clock H.Position V.Position Language Auto configuration (Warm) Color (Cool) Color RGB Color temperature Reset OSD position. timeout Display information Exit 45 Watts

Environmental Considerations Dimensions Weight (N. W.)

Switch

External Controls: Functions
Power Consumption Audio Output Regulatory Compliance

( Maximum )

Rated Power 1.5W rms (Per channel) CUL, FCC, VCCI, CCC, MPR II, CE, TUV/GS, TCO'99, UL, ISO13406-2
* All specifications are subject to change without notice.

 

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