Acer AL732 AL732 Service Guide
Acer AL732 Manual
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- Acer AL732 | AL732 Service Guide - Page 1
AL732 Service Manual - Acer AL732 | AL732 Service Guide - Page 2
TABLE OF CONTENTS SERVICE WARNING 3 A. I M P O R T A N T S A F E T Y I N S T R U C T I O N 3 B. S P E C I F I C A T I O N S 4 C. T I M I N G C H A R T 5 D. C O N T R O L L O C A T I O N 7 E. C O N D U C T I O N V I E W 8 F. ADJUSTMENT PROCEDURE 13 G. T R O U B L E S H O O T I N G H I - Acer AL732 | AL732 Service Guide - Page 3
monitor engineer.Contact the local dealer or the nearest Acer branch office if you need help. A. IMPORTANT SAFETY INSTRUCTION Prior to using this service manual the grounding-type plug. 10. Do not allow anything to rest on the power cord.Do not locate this product where persons will walk on the cord. - Acer AL732 | AL732 Service Guide - Page 4
SPECIFICATIONS 1. Maximum Resolution 2. Recommend Resolution 3. Synchronization Range Horizontal Vertical 4. Active Display Area 5. Dot Pitch 6. Support display . Color Temperature 18. Dimension (WxHxD) 19. Monitor Weight 20. Base Operation Tilt 21. Power Saving ON STAND BY OFF 22. Signal Connector - Acer AL732 | AL732 Service Guide - Page 5
077 H-Total (µ s) 31.774 31.778 26.413 26.667 28.444 26.400 20.800 H-Active Display (µs) H-Blanking (µs) Front Porch (µs) H-Sync-width (µs) H-Back Porch (µs) V-Frequency (Hz) V-Total (ms) V-Active Display (ms) V-Blanking (ms) V-Front Porch (ms) 25.419 6.355 0.635 3.813 1.906 70.1 14.267 12 - Acer AL732 | AL732 Service Guide - Page 6
H-Total (µs) 21.333 20.677 17.707 16.660 15.630 12.504 H-Active Display (µs) H-Blanking (µs) Front Porch (µs) H-Sync-width (µs) 16.162 5.172 0.323 1.616 (ms) 13.333 16.666 14.272 13.328 16.661 13.329 V-Active Display (ms) 12.800 15.880 13.599 12.795 16.005 12.804 V-Blanking - Acer AL732 | AL732 Service Guide - Page 7
D CONTROL LOCATION 1. Menu Button ( MENU ) 2. Select Button ( < , > ) 3. Auto Button ( AUTO ) 4. Power Button 5. LED ( Power Indicator ) 1. S-VIDEO 2. DC IN 3. VIDEO IN 4. PC AUDIO IN 5. AUDIO OUT 6. DVI/VGA IN - Acer AL732 | AL732 Service Guide - Page 8
E. CONDUCTION VIEW MAIN BOARD (Component Side) - Acer AL732 | AL732 Service Guide - Page 9
MAIN BOARD (Solder Side) - Acer AL732 | AL732 Service Guide - Page 10
CONTROL BOARD (Component Side) CONTROL BOARD (Solid Side) - Acer AL732 | AL732 Service Guide - Page 11
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(31.5KHz,640x480) 1. Plug power cable into the adapter, check adapter power indicator light up green. 2. Make sure the voltage of the power plug (CN7) on the main PCB to the value shown at right. 12.0V ±0.2V Power Saving # Wattmeter 1. Unplug the signal cable from the monitor. Check # PC or - Acer AL732 | AL732 Service Guide - Page 14
Display ( Black ) G. TROUBLE SHOOTING HINTS LED ON ? NO YES Push the power ON/OFF switch Power adapter ? YES NO Change adapter LED Color YES change ? Back light ON? YES To Step 2 NO Check main board U4/Pin201 NO Check the J1/Pin1 of Inverter High Voltage ! Hi / Lo under push power - Acer AL732 | AL732 Service Guide - Page 15
A Check the connection of CN1 cable Display ? NO Change the main board YES OK ! B Hi / Lo under push power sw? YES Change the Inverter NO Change the main board Display ? YES OK ! NO To Step 2 - Acer AL732 | AL732 Service Guide - Page 16
Step 2 Check the main board 12V ? YES +5.0 V ? YES +3.3 V ? NO Check Adapter, F1, U13 NO Check U13,U12,R83 NO Check U14 YES H/V input YES Signal ? Change U4 NO Check H/V Signal Display ? YES OK ! NO Change Signal Cable - Acer AL732 | AL732 Service Guide - Page 17
No display (White) Check the main board 5V ? NO Check U13,U12,R83 YES +3.3V ? NO Check U14 YES Check the main board U4/Pin32 ? NO Check 3.3V Circuit YES YES H/V Input Signal ? NO Check H/V Signal YES Change U4 Check CN2 Display ? YES OK ! NO Change Signal Cable - Acer AL732 | AL732 Service Guide - Page 18
No Sound Check Audio Input ? NO Check Audio Source YES U19 Pin1 12V? YES Check U19 Pin23/24 ? YES U18 Pin4 Vcc ? YES Check U18 Pin15/28 ? YES Speaker ? NO Check Power Supply NO Check U19 NO Change Power Supply NO Check U18 NO Change Speaker Cable YES OK ! - Acer AL732 | AL732 Service Guide - Page 19
No Video Check CN11/CN16 Video Input ? NO Check Video Cable YES U20 Vcc ? YES Check U20 Pin81-90 Video Output ? YES Check U20 Pin81-90 Video Output ? YES OK ! NO Check Power Supply NO Check U20 NO Change Power Supply - Acer AL732 | AL732 Service Guide - Page 20
H. REPLACEMENT PARTS LIST NO Parts No. Description Part Location Q'ty - Acer AL732 | AL732 Service Guide - Page 21
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8 R0~R7 SCALER 8 G0~G7 8 B0~B7 CRYSTAL 24C16 EEPROM POWER SWITCH POWER SUPPLY AND 3V REGULATOR 5V 12V POWER ADAPTER 12V 12M HZ SDA SCL MCU CRYSTAL 12M HZ LVDS 8 RA0~RA7 8 GA0~GA7 8 BA0~BA7 LVDS 8 RB0~RB7 8 GB0~GB7 8 BB0~BB7 LCD PANEL(LVDS) 10 EVEN D-DE 10 ODD HI VOLTAGE 8PIN - Acer AL732 | AL732 Service Guide - Page 31
J. SCHEMATIC DIAGRAM - Acer AL732 | AL732 Service Guide - Page 32
47K R4 47K R6 R8 R9 R1 10K 47 47 47 C AC AC D2 DAN217K(NP) D3 DAN217K(NP) VE C14 0.1uF C15 0.1uF 1uF 11 10 U3E 7 74LVC14-SOP14 13 12 U3F 7 74LVC14-SOP14 Acer Incorporated Title Size Date: VGA & DVI Input Document Number AL732 Thursday, January 23, 2003 Sheet Rev B 1 of 7 - Acer AL732 | AL732 Service Guide - Page 33
82 DG4 81 DG5 DG6 DG7 80 79 78 Display Port DB0 DB1 77 74 DB2 DB3 DB4 DB5 VSSQ35 VSSQ36 VSSQ37 9 12 15 DGND31 DGND32 DGND33 76 Power and Ground 96 136 VSS11 VSS12 147 174 VSS13 VSS14 Acer Incorporated AD & Scaler Document Number AL732 Thursday, January 23, 2003 Sheet 1 of Rev B 7 - Acer AL732 | AL732 Service Guide - Page 34
R46 10K R47 10K R48 10K R49 10K R50 10K R51 10K R52 10K POWER AUTO MENU RIGHT LEFT V33 C59 0.1uF U7 74LVC541A 1 19 OE1 OE2 2 C69 0.1uF J4 1 2 3 CON3 Acer Incorporated Title Size Date: Memory & LCD Power control Document Number AL732 Thursday, January 23, 2003 Sheet 1 of Rev B 7 - Acer AL732 | AL732 Service Guide - Page 35
29 DS90C383-QSOP56 RE4 RE3 RE2 RE1 RE0 RE6 RXE0RXE0+ RXE1RXE1+ RXE2RXE2+ RXECRXEC+ RXE3RXE3+ L16 L0603 L17 L0603 C79 0.1uF C78 0.1uF L20 L0603 LVDSON Acer Incorporated Title Size Date: Output & Connector Document Number AL732 Thursday, January 23, 2003 Sheet 1 of Rev B 7 - Acer AL732 | AL732 Service Guide - Page 36
4.7K R92 4.7K 2 C126 C 0.1uF Q5 B E 2N3904 1 R33 R89 4.7K 4.7K 2 2 Q9 C 2N3904 B Q4 E C 2N3904 R91 1K B E R90 NP(0603) 11 7 R96 27K BKLON PWMOUT Acer Incorporated Title Size Date: Power supply Document Number AL732 Thursday, January 23, 2003 Rev B Sheet 1 of 7 - Acer AL732 | AL732 Service Guide - Page 37
R-SPOUT C204 0.1uF/NP CN10 BASE2S 1 2 R-OUT 1 2 + C163 100uF/16V(NP) C B E Q6 2N3904(NP) R127 4.7K(NP) VOLUME MUTE MODE GAIN SDWN HPS 01 1 00 Acer Incorporated Title Size Date: Audio Document Number AL732 Thursday, January 23, 2003 Rev B Sheet 1 of 7 - Acer AL732 | AL732 Service Guide - Page 38
RP14 2 7 33 3 6 4 5 XPD4 1 XPD5 2 XPD6 3 XPD7 4 0 (OPT) 0 (OPT) 3.3K 0 (OPT) 8 RP15 7 33 6 5 VCLK VPEN V656_0 V656_1 V656_2 V656_3 V656_4 V656_5 V656_6 V656_7 Acer Incorporated Title Decoder Size Document Number AL732 Date: Thursday, January 23, 2003 Sheet Rev B 1 of 7 - Acer AL732 | AL732 Service Guide - Page 39