Acer AL1702 AL1702W Service Guide
Acer AL1702 Manual
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- Acer AL1702 | AL1702W Service Guide - Page 1
Acer AL1702W Service Guide 1 - Acer AL1702 | AL1702W Service Guide - Page 2
Version A00 Service Guide Version and Revision Release Date Mar.-23-2007 Revision History Initial Release TPV model T77HRDNBGWAFN 2 - Acer AL1702 | AL1702W Service Guide - Page 3
, manual or otherwise, without the prior written permission of Acer Incorporated. Disclaimer The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically - Acer AL1702 | AL1702W Service Guide - Page 4
Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service circuit power cord - Acer AL1702 | AL1702W Service Guide - Page 5
power strips and extension cords. Overloading can result in fire or electric shock. z Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or electric shock. Never spill liquids on the monitor. z Do not attempt to service the monitor yourself - Acer AL1702 | AL1702W Service Guide - Page 6
Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Monitor Block Diagram Main Board Diagram Software Flow chart Main Board Layout Adjusting the viewing angle Rear Bezel Chapter 2 Operating Instructions External Controls Front Panel - Acer AL1702 | AL1702W Service Guide - Page 7
Chapter 1 Introduction Scope This specification defines the requirements for the 17" MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector, also supports VESA DPMS power management and plug & play - Acer AL1702 | AL1702W Service Guide - Page 8
/white balance and Blue/white balance control Power input Ambient temperature Display mode : Dark room : 40 cm for LCD performance, 20 cm for LCD failures : ＞30 minutes : Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test. Minolta CA100 photometer, or - Acer AL1702 | AL1702W Service Guide - Page 9
LCD Monitor General Specification 9 - Acer AL1702 | AL1702W Service Guide - Page 10
10 - Acer AL1702 | AL1702W Service Guide - Page 11
LCD Panel Specification General Specifications Mechanical Information 11 - Acer AL1702 | AL1702W Service Guide - Page 12
Optical Specifications 12 - Acer AL1702 | AL1702W Service Guide - Page 13
Supported Timing 13 - Acer AL1702 | AL1702W Service Guide - Page 14
The LCD MONITOR will contain a main board, a power board, and keypad board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel and the DC-DC conversion, The Adapter will provide the 12V DC-power to inverter/power board - Acer AL1702 | AL1702W Service Guide - Page 15
Main Board Diagram Crystal 24MHZ MCU RTD2120L-LF OSD Control Interface (Keypad) LCD Interface Scalar: RTD2025L QFN-48 (Include: ADC, OSD etc) D-SUB Connector 15 - Acer AL1702 | AL1702W Service Guide - Page 16
Software Flow Chart 1 Y 2 3 N N 4 N 5 Y 6 N 7 8 Y Y 9 N 10 11 Y N 12 N 13 Y Y N 14 15 16 Y 17 N 18 19 Y 16 - Acer AL1702 | AL1702W Service Guide - Page 17
5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Save the power key status into up the scalar. 15) Are there any signals coming from analog port? 16) Display "No connection Check Signal Cable" message. And go into standby mode - Acer AL1702 | AL1702W Service Guide - Page 18
Main Board Layout Symbol U201 U401 U402 U501 Description AP1117E33LA IC MCU RTD2120L-LF REALTEK AZ431AN-A-E1 SCALER IC RTD2025L QFN-48 Symbol X401 CN201 CN202 CN601 Description 24MHZ/30PF/49US WAFER 9P RIGHT ANELE PITCH WAFER CONN W TO B12P*2 P*2.0 4505-2 18 - Acer AL1702 | AL1702W Service Guide - Page 19
Adjusting the viewing angle 19 - Acer AL1702 | AL1702W Service Guide - Page 20
Rear Bezel Item Description 1. Power Cable Item 2. Description Signal Cable 20 - Acer AL1702 | AL1702W Service Guide - Page 21
Operating Instructions Chapter 2 Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. • The power cord should be connected. • Connect the - Acer AL1702 | AL1702W Service Guide - Page 22
Front Panel Control 22 - Acer AL1702 | AL1702W Service Guide - Page 23
Adjusting the Picture How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press 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 - Acer AL1702 | AL1702W Service Guide - Page 24
b. The Description For Function Control LEDS 24 - Acer AL1702 | AL1702W Service Guide - Page 25
25 - Acer AL1702 | AL1702W Service Guide - Page 26
Description Auto Config When Analog signal input, if User Press Hot-Key "Auto", will show this message, and the Please Wait monitor do the auto config function. Input Not Supported When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message - Acer AL1702 | AL1702W Service Guide - Page 27
a time-out period, will automatically switch to an OFF mode. This reduces the monitor's internal power supply consumption. After the video input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to a "Screen Saver" feature except the - Acer AL1702 | AL1702W Service Guide - Page 28
Machine Disassembly Chapter 3 This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the screws to release base stand and gemel. (Fig 1-3) Fig 1 Fig 2 28 - Acer AL1702 | AL1702W Service Guide - Page 29
Fig 3 2. Remove the screws to remove the back cover. (Fig 4) Fig 4 29 - Acer AL1702 | AL1702W Service Guide - Page 30
3. Remove the screws to remove the shield . (Fig 5) 4. Remove the bezel. (Fig 6) Fig 5 Fig 6 30 - Acer AL1702 | AL1702W Service Guide - Page 31
5. Remove the screws to remove the panel. (Fig 7-9) Fig 7 Fig 8 Fig 9 31 - Acer AL1702 | AL1702W Service Guide - Page 32
6. Remove the screw to remove the main board. (Fig 10) Fig 10 7. Remove the screws to remove the power board. ( Fig 11-12 ) Fig 11 32 - Acer AL1702 | AL1702W Service Guide - Page 33
Fig 12 33 - Acer AL1702 | AL1702W Service Guide - Page 34
This chapter provides troubleshooting information for the AL1702W: 1. No Power No power Chapter 4 Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal OK NG Reinsert or check the power section Measure U201 Pin 3=5V, U201 Pin - Acer AL1702 | AL1702W Service Guide - Page 35
No picture Measure U201 PIN2=3.3V OK NG Check if X401oscillate waveforms are normal NG OK Replace U201 Replace X401 Check if the sync signal from computer is output and video cable is connected normally NG Input the sync signal of computer, or OK change the cable Replace U401,U501 35 - Acer AL1702 | AL1702W Service Guide - Page 36
from on to off Check the PPWR panel power relative circuit Q601, Q602 In normal operation, when LED =green, R601 =5 V, NG If PPWR no-response when the power switch Turn on and turn off, replace the U401- RTD2120L OK Replace panel 4. Keypad Board OSD is unstable or not working NG Is Keypad - Acer AL1702 | AL1702W Service Guide - Page 37
5. No Backlight Check C802 (+) =12V NG OK Check ON/OFF signal NG OK Check IC801 pin12=5V? NG OK Change FB801,Check Q805 Q808, Q810 Check Interface board Change Q805.Q808 or Q810 Check the pin9&10 of IC801 have PWM wave NG NG Change IC801 Replace IC801 OK OK Check the resonant - Acer AL1702 | AL1702W Service Guide - Page 38
Connector Information The following figure shows the connector locations on the monitor: Chapter 5 38 - Acer AL1702 | AL1702W Service Guide - Page 39
the printed Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of - Acer AL1702 | AL1702W Service Guide - Page 40
Exploded Diagram (Model: AL1702W) 40 - Acer AL1702 | AL1702W Service Guide - Page 41
Part List Above picture show the description of the following component. Item Picture 1 Description Base 2 shield 3 Key board 4 Panel 41 - Acer AL1702 | AL1702W Service Guide - Page 42
5 Power Board 6 Main Board 42 - Acer AL1702 | AL1702W Service Guide - Page 43
Schematic Diagram Main Board CN201 1 2 3 4 5 6 7 8 9 CONN CMVCC CMVCC CMVCC BKLT-VBRI BKLT-EN C_PANEL_INDEX Volume# Mute DIM# LED_G R213 10K 1/16W LED_G# {4} Q205 PMBS3906 Title Size B Date: POWER Document Number G2498-A-AC-X-1-070307 Wednesday , March 07, 2007 Sheet 2 of Rev 2 6 - Acer AL1702 | AL1702W Service Guide - Page 44
DSUB_V ZD302 UDZS5.6B 12/29 change ZD302 ZD303 from NC to insert {4} DDC1_SCL {4} DDC1_SDA ZD301 UDZS5.6B 2 1 2 2 2 {4} R302 0R05 1/16W R301 100R 1/16W R303 100R 1/16W ZD303 UDZS5.6B R304 R305 C302 C303 2.2K 1/16W 2.2K 1/16W 22pF 22pF RTD_H {5} RTD_V {5} 1 DDC1_SCL DSUB_V DSUB_H - Acer AL1702 | AL1702W Service Guide - Page 45
NC/4K7 1/16W NC/4K7 1/16W NC/4K7 1/16W 4K7 1/16W 1K 1/16W 1K 1/16W DSUB_5V CMVCC '06-11-24 D402 change Value from BAT54 to C402 BAV70 D402 BAV70 1uF 10V Q401 MCU_VCC_S PMBS3904 CMVCC D401 BAT54C(NC) 2 1 Reserve for powerBoard CMVCC=3V 3 MCU_VCC R402 1K 1/16W C412 R403 1uF 10V - Acer AL1702 | AL1702W Service Guide - Page 46
CRYSTAR_OUT {4} RTD_SCLK {4} RTD_SD3/SDI {4} VCC3 FB502 120 C503 0.1uF/16V RXO0+ RXO0- PGND 39 DGND VCCK 40 R1.8DVCC 41 RTD_SD3/SDI SDA SCL 42 RTD_SCLK 45 CRYSTAR_OUT XIN TMDS_VDD 46 TMDS_VDD BJT_B VCC3 R507 Q501 MMBT2907AK 3.3 2W Q502 MMBT2907AK 1.8AVCC R1.8DVCC FB503 C506 C507 - Acer AL1702 | AL1702W Service Guide - Page 47
{5} LVDS_O[0..9] {5} LVDS_E[0..9] LVDS_O0 LVDS_O1 LVDS_O2 LVDS_O3 LVDS_O4 LVDS_O5 LVDS_O6 LVDS_O7 LVDS_O8 LVDS_O9 LVDS_E0 LVDS_E1 LVDS_E2 LVDS_E3 LVDS_E4 LVDS_E5 LVDS_E6 LVDS_E7 LVDS_E8 LVDS_E9 RXO0RXO0+ RXO1RXO1+ RXO2RXO2+ RXOCRXOC+ RXO3RXO3+ RXE0RXE0+ RXE1RXE1+ RXE2RXE2+ RXECRXEC+ RXE3RXE3+ - Acer AL1702 | AL1702W Service Guide - Page 48
Power board 1 SG901 NC BD901 ! KBP208G + 3 2 - 4 ! 1 L902 2 4 3 ! 7.0mH C902 0.001uF/250V 100 1/4W R919 100 1/4W R920 ! T901 4 9 5 7 6 11 4 10 6 1 8 3 12 POWER X'FMR C912 0.001uF + C917 680uF/25V 1 3 D906 SP10100 L904 1.1uH C922 470uF/25V + C918 680uF/25V - Acer AL1702 | AL1702W Service Guide - Page 49
22R 1/8W C824 0.1uF Q802 AM9945N-T1-PF 1 S 8 D 2G D7 3 S 6 D 4G D5 C839 1000pF R855 33 1/4W R856 33 1/4W C838 1000pF T801 POWER X'FMR 6 7 3 4 1 8 C801 15pF/3KV 3 R853 68K 1/10W D805 LL4148WP D807 LL4148WP R817 10K 1/10W C819 0.0022uF CN801 1 2 R821 1K 1/10W 1% CONN