Acer B193R Service Manual Download Page 32 | Manualshive

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32

3. Panel Power Circuit

White screen

Measure Q301 base
is high level?

X201 oscillate
waveform is normal

Check CN402 is solder
and Q301, Q302 is OK?

Check Correspondent
component.

Replace PANEL

Check Correspondent
component.

Replace U203

OK

OK

OK

Replace X201

OK

NG

NG

NG

NG

Check reset circuit of
U203 is normal

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Summary of Contents for B193R

Page 1: ...1 Acer B193R Service Guide ...

Page 2: ...2 Service Guide Version and Revision Version Release Date Revision History TPV model A00 Mar 24 2008 Initial Release T97HNAD8K3ABHN T97HNAD8K3ABDN ...

Page 3: ...buyer and not Acer Incorporated its distributor or its dealer assumes the entire cost of all necessary servicing repair and any incidental or consequential damages resulting from any defect in the software Intel is a registered trademark of Intel Corporation Pentium and Pentium II III are trademarks of Intel Corporation Other brand and product names are trademarks and or registered trademarks of t...

Page 4: ...erference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep...

Page 5: ...ose of the grounded plug z Unplug the unit during a lightning storm or when it will not be used for long periods of time This will protect the monitor from damage due to power surges z Do not overload 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 ...

Page 6: ...ftware Flow chart 15 Main Board Layout 17 Installation 18 Attaching Removing the base 19 Chapter 2 Operating Instructions 21 External Controls 21 Front Panel Controls 21 eColor Management OSD 22 How to Adjust a Setting 23 LOGO 26 Chapter 3 Machine Disassembly 27 Chapter 4 Troubleshooting 30 Chapter 5 Connector Information 36 Chapter 6 FRU Field Replacement Unit List 38 Exploded Diagram 38 Chapter ...

Page 7: ...rovide a performance oriented product with no radiation This will alleviate the growing health concerns It is also a space saving design allowing more desktop space and comparing to the traditional CRT monitor it consumes less power and gets less weight in addition MTBF target is 50k hours or more Chart of B193R Panel HSD190MEN3 A00 Signal Interface D Sub 15 pin DVI 24 pin Sync Type Separate Compa...

Page 8: ...user mode which allows that the brightest two of 32 linear distributed gray scales 0 700mv can be distinguished Picture position and size Factory preset value Viewing angle 90 H and V AC Supply voltage 230V 5 50 3Hz Ambient temperature 20 5 Display mode 1280x1024 75Hz all white e color mode Set to User mode Measurement systems The units of measure stated in this document are listed below 1 gamma 1...

Page 9: ...e 1280 x 1024 75Hz ON Mode 36W EPA ENERGY STAR OFF Mode 1W Contrast control Set to The value under user mode which allows that the brightest two of 32 linear distributed gray scales 0 700mv can be distinguished Power Source 90 V 240 V 50 60 3Hz Environmental Considerations Operating Temp 0 to 40 C Storage Temp 20 to 60 C Operating Humidity 15 to 90 Storage Humidity 15 to 90 Peak surge current 55A ...

Page 10: ...10 LCD Panel Specification General Specifications Mechanical Information Electrical Characteristics ...

Page 11: ...11 Optical Specifications ...

Page 12: ...12 Support Timing ...

Page 13: ...nel control logic brightness control logic and DDC The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage Inverter Board include adapter Flat Panel and CCFL backlight Main Board Key board Input D SUB Signal CCFL Drive AC IN 90V 264V Input DVI Signal ...

Page 14: ...14 Main Board Diagram U203 Scalar IC NT68665MFG 128 Include MCU ADC OSD D Sub Connector CN101 H sync V sync RGB LCD Interface CN402 Key Board Control CN407 Crystal X201 12MHz DVI Connector CN102 ...

Page 15: ...15 Software Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 ...

Page 16: ... set it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake 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 after the message disappears 17 Program the scalar ...

Page 17: ...escription CN407 WAFER CN102 DVI 24PIN CONNECTOR CN301 WAFER 9P RIGHT ANELE PITCH U203 IC NT68665MFG 128 QFP 128L CN402 CONNECTOR U301 IC AP1117D33LA TO252 3L ATC CN101 D SUB 15PIN U304 IC AP1117E18LA SOT223 3L ANACHIP U204 IC AF24BC16 SI 16K SOIC 8 ...

Page 18: ...e sure both the monitor and computer are switched off 2 Connect one end of the 24 pin DVI cable to the back of the monitor and the other end to the computer s port 2 Connect the power cord Connect the power cord to the monitor then to a properly grounded AC outlet 3 Turn on the monitor and computer Turn on the monitor first then the computer This sequence is very important 4 If the monitor does no...

Page 19: ...ckwise Tighten the screw clockwise Remove Reverse the steps to remove the base Screen Position Adjustment In order to optimize the best viewing position you can adjust the height tilt swivel pivot of the monitor Height Adjustment After pressing the top of the monitor push the lock button towards right then you can adjust the height of the monitor ...

Page 20: ... example of the tilt range Swivel With the built in pedestal you can swivel the monitor for the most comfortable viewing angle Monitor Pivot Adjust height to the top position before rotation the monitor Rotate clockwise until the monitor stops at 90 ...

Page 21: ...n or off 3 4 Press or to navigate to the desired function press Enter to select the function Press or to change the settings of the current function 5 Menu Enter Activate the OSD menu when the OSD is off or activate deactivate the adjustment function when the OSD is on 6 Auto adjust button Exit a When the OSD menu is active this button will act as the exit key exit OSD menu b When the OSD menu is ...

Page 22: ...22 eColor Management OSD ...

Page 23: ...23 How to Adjust a Setting ...

Page 24: ...24 Adjusting the picture ...

Page 25: ...25 ...

Page 26: ...here is no video input signal present When there is no video input signals this monitor following 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 display is com...

Page 27: ...pter contains step by step procedures on how to disassemble the monitor for maintenance Disassembly Procedure 1 Remove the HINGE ASSEMBLY as the following indicator Fig 1 Fig 1 2 Remove the back cover and bezel Fig 2 Fig 2 Chapter 3 ...

Page 28: ...28 3 Remove the lamp connectors and the screw Fig 3 Fig 3 4 Remove the screws to remove the panel Pay attention to the LVDS cable Fig 4 5 Fig 4 Fig 5 ...

Page 29: ...29 5 Remove the screws to remove the main board and power board Fig 6 Fig 6 ...

Page 30: ...er Press power key and look if the picture is normal Please reinsert and make sure the AC of 100 240 is normal Reinsert or check the power section Check if X201 oscillate waveforms are normal Measure U301 Pin2 3 3V U304 Pin2 1 8V OK OK NG NG NG Measure CN301 Replace U203 Replace X201 NG Replace U301 U302 OK OK ...

Page 31: ...ce U203 Replace X201 Measure U301 Pin2 3 3V U304 Pin2 1 8V Check Correspondent component Replace U203 Check X201 oscillate waveform is normal Replace U301 U302 OK OK OK OK OK NG NG NG NG Check reset circuit of U203 is normal Check HS VS from CN101 is normal Replace X201 Check Correspondent component NG NG OK ...

Page 32: ...se is high level X201 oscillate waveform is normal Check CN402 is solder and Q301 Q302 is OK Check Correspondent component Replace PANEL Check Correspondent component Replace U203 OK OK OK Replace X201 OK NG NG NG NG Check reset circuit of U203 is normal ...

Page 33: ...ard OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Board Is Button Switch normally Replace Button Switch Y NG NG Is Key Pad Board normally Replace Key Board Y NG Y Check Main Board ...

Page 34: ...volt 120V or 220V Change F901 Check BD901 L901 IC901 Check the voltage of C905 Check bridge retified circuit Check start voltage for the Pin2 of IC901 Change IC901 OK Check the auxiliary voltage is smaller than 20V OK NG No power NG NG OK Check T901 D906 D907 Q903 ZD921 ZD922 IC904 IC903 Check IC901 NG OK NG ...

Page 35: ... board Check IC801 pin12 12V Change Q805 Q808 or Q810 Check the pin9 10 of IC801 have PWM wave Change Q801 Q804 Q811 Q812 Replace IC801 Check the resonant wave of pin3 pin7 for T801 Check the output of T801 T802 Check Q802 Q803 Check connecter lamp OK Change T801 T802 OK OK OK OK OK NG NG NG NG NG NG OK ...

Page 36: ...36 Connector Information The following figure shows the connector locations on the monitor D SUB connector Chapter 5 ...

Page 37: ...37 DVI Connector ...

Page 38: ... a part number change is made it will not be noted in 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 customer machines NOTE To scrap or to return the ...

Page 39: ...39 Part List Above picture show the description of the following component Item Picture Description 1 HINGE ASSEMBLY 2 MAIN FRAME 3 Panel ...

Page 40: ...40 4 Power Board 5 Main Board 6 FFC CABLE ...

Page 41: ... VS 3 C104 0 1uF 16V FB106 30 OHM 1 2 GIN 3 ZD103 RLZ5 6B D SBU DVI Scaler NT68665 USB HUB RIN 3 C115 1uF 16V R141 2K2 1 16W R439 NC RX1 3 R135 100R 1 16W R206 D111 BAV99 3 1 2 D201 190S8 DVI_5V RXC 3 DDCSCL_D CN102 DVI CIRCUIT D SBU DVI Scaler NT68665 D107 BAV99 3 1 2 R139 75R 1 16W D103 BAV99 3 1 2 U101 NC M24C02 WMN6TP 1 2 3 4 5 6 7 8 NC NC NC E0 E0 NC NC E1 E1 E1 NC E2 E2 E2 E2 VSS SDA SCL WC ...

Page 42: ... T5M RSGB0M RSRA3P T4P RSRB0P RSRA3M T4M RSRB0M RSBB1M T3M RSBB2P TCLK1P RSBB2M TCLK1M RSBB3M T2M RSBB3P T2P RSCLKBP T1P RSCLKBM T1M RSGB1P T0P RSGB1M T0M RSGB3M RSGB3P RSRB1M RSRB1P RSRB2M RSRB2P RSRB3M RSRB3P R228 EXT_EDID MCU POWER R209 NC 0R05 1 16W 115 MCU_VDD R224 NC 4 7K AVCC TCLK ZD201 RLZ2 2B AUDIO_STDBY 5 RX C222 NC 1uF 16V C207 0 1uF 16V NO 24C16_WP 17 DVDD BIN 2 T7P 5 TCLK2P 5 Q201 2N3...

Page 43: ...C315 100uF 16V R302 330 1 4W PANEL_IDX 3 CN301 CONN 1 2 3 4 5 6 7 8 9 C307 0 1uF 16V C308 1uF 16V R303 330 1 4W 3 3VCC C309 100uF 16V modify 1 8 C316 0 1uF 25V R312 1K 1 16W C306 100uF16V R305 10K 1 16W Q301 2N3904S RTK PS 070617 CHANGE R307 51K 1 16W C317 0 1uF 16V D301 SM340A 5V BL_CONTROL 3 C301 0 1uF 16V U304 AP1117E18LA 3 2 1 VI VO GND C305 100uF 16V 5V 12V U302 NC AZ1117D 1 8 E1 1 2 3 ADJ GN...

Page 44: ...722 Change to 120ohm C401 NC 0 1uF 16V TCLK2P LF_B R421 NC POWER T1M C403 0 1uF 16V C402 0 1uF 16V R433 NC 0R05 1 10W 5 R435 NC 0R05 1 10W 5 Q402 2N3906S RTK PS 3 3VCC KEY1 3 5V_FB EAR R C407 0 1uF 16V T3P 3 R407 100R 1 16W LED_G KEY1_PAD LED_O LED_B G 3 KEY1_PAD KEY2_PAD Menu Up Down key T0M 3 EAR L 3 3VCC T5P 3 KEY2_PAD C404 0 1uF 16V R423 NC 10K 1 16W 5V LED_R 3 R412 1K 1 16W R416 120R 1 16W 5 ...

Page 45: ...52BPS 1 2 3 4 5 6 7 8 GND COMP VCC RT NC CS VCC OUT C938 1500pF 1KV C939 1000uF 16V Q901 2SK2645 54MR R903 680K OHM 1 4W C925 NC R904 300K OHM 1 4W R939 NC GND1 GND 1 2 C929 0 001uF C909 470pF 25V C908 22uF 50V R901 680K OHM 1 4W 钡竲 э CN901 SOCKET 1 2 3 ON OFF C905 100uF 450V R924 150R 1 8W R942 1K 1 10W 1 D906 SP10100 1 2 3 L903 1 1uH L901 4 0mH 1 2 4 3 D901 FR103 C912 0 001uF D903 LL4148 D907 NC...

Page 46: ...15 0 0022uF C823 0 0022uF R861 130K OHM 1 1 10W D804 BAV99 3 1 2 Q805 PDTC144WK T801 POWER X FMR 1 4 8 3 7 9 6 2 5 C838 1500pF C822 1uF 25V Q812 PMBS3906 1 2 3 Q803 AM9945N T1 PF 1 2 3 4 8 7 6 5 S G S G D D D D R804 100R 1 8W Q806 PMBS3904 C802 470uF 25V R802 NC R822 1K 1 10W 1 Q801 PMBS3904 14V IC801 TL494IDR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1IN 1IN FEEDBACK DTC CT RT GND C1 E1 E2 C2 VCC OU...

Page 47: ... C615 NC R616 1K 1 10W 5 5V_Audio ROUT C610 100pF CN604 NC CONN 1 2 3 4 change R609 R610 R611 R612 add R616 C613 100uF 25V C616 NC C607 0 47uF 16V R607 10K 1 10W 5 MUTE EAR ROUT LOUT EAR LOUT SEL BTL CN601 CONN 1 2 3 4 R603 1K 1 10W 5 Lin C606 0 47uF 16V C618 0 47uF 16V Q602 PMBS3904 C605 1uF 25V R610 8 2KOHM 5 1 10W ROUT LOUT 5V_Audio 5V_Audio C602 100uF 25V R609 8 2KOHM 5 1 10W C611 100pF SEL BT...

Page 48: ...D POWER_Key C002 NC LED001 LED 3 4 1 2 MENU 0 V C001 NC POWER_Key LBADC2 VOL LBADC2 C003 NC MENU CONNECTOR GND VOL C004 NC AUTO R003 1K 1 16W 5 LED_BLUE LED_BLUE R002 2K OHM 1 16W add ZD001 and ZD002 for ESD solution ZD002 UDZSNP5 6B 1 2 VOL VOL LBADC1 SW001 JB41 03521 1 2 3 4 5 6 7 8 9 10 11 12 MENU VOL CN001 POWER AUTO ZD001 UDZSNP5 6B 1 2 0 V ...

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