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SERVICE MANUAL
15" COLOR LCD MONITOR
LMU-TF150A2 (GENERAL)
PRODUCT CODE NO. LMU-TF150A2 1 938 102 10
SANYO Electric Co., Ltd. OSAKA, JAPAN
REFERENCE NO. SM 920008
INDEX
Page PRECAUTIONS ----------------------------------------------------------------------------------- 2
1, MAIN SPECIFICATION ---------------------------------------------------------------------- 3 2, TROUBLE SHOOTING ---------------------------------------------------------------------- 4,5,6 3, MAINTENANCE Disassembling the major components ---------------------------------------------- 7
4, BLOCK DIAGRAM ---------------------------------------------------------------------------- 8 5, CONNECTION DIAGRAM ------------------------------------------------------------------ 9 6, TABLE OF SIGNAL NAME ----------------------------------------------------------------- 10,11 7, EXPLODED VIEW AND PARTS LIST 7-1 Exploded View ------------------------------------------------------------------------ 12 7-2 Parts List -------------------------------------------------------------------------------- 13 8, APPENDEX ------------------------------------------------------------------------------------- 14
Refer to the separate volume user's guide for instruction.
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PRECAUTIONS
Placement precautions
l l l l Avoid placing the unit in humid or dusty places, or where it will be exposed to excessive heat (direct sunlight, heaters, etc.) Do not step on or set anything on the AC cord. DAMAGE TO THE AC CORD IS A SAFETY RISK AND CAN CAUSE A FIRE. Install the unit only on a stable and smooth surface. Do not connect the unit to the same AC outlet with appliances that generate large amounts of interference (such as heaters with thermostats, appliances with motors, etc.). It is best to use a completely separate electrical outlet. l Keep the unit away from water. If water accidentally enters the unit, unplug the AC power cord immediately. DO NOT PLUG IN THE UNIT AGAIN.
Handling precautions
l l l l l Avoid bending, kinking or damaging the AC power cord. Never insert or remove the power cord with wet hands. Also, be sure to hold cord by the plug when removing it from the outlet. Do not remove any parts that are held in place with screws. (The unit does not contain any user serviceable items.) Maintain standard room temperature (5oC to 35 oC, or 41oF to 95 oF) during use. Do not subject the unit to shock or vibration. Do not move the unit while it is in use. A rapid increase in room temperature in cool weather can cause condensation to from inside the unit. If this occurs, wait at least 15 minutes after turning the unit on before attempting to operate it.
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1. MAIN SPECIFICATION
LCD
Panel Type Screen Size Pixel Pitch Pixel Format Effective Viewing Area Brightness Response Time Contrast Viewing Angle
Color Type No. Synchronization Horizontal Frequencies Vertical Input Signal System Input Impedance Sync. Type/Level Audio Line in Headphone Speaker Video External Control Switch/Volume On-Screen Display Back Light
Environment
Temperature Humidity Power Supply (AC Adapter) Model Name Power Consumption Physical Dimensions (WXHXD) Weight Power Management USB HUB
Tilt/Swivel Plug & Play Other Features Accessories
TFT 15.0" 0.2970 X0.2970 mm 1,024 X 768 304.1 X 228.1 mm 2 200 cd/m 40 ms 350 : 1 Up:55, Down:65, Right:70, Left:70 deg. (Contrast Ratio:5) 16.77 million CCFL 2 pcs 24.8 - 60.2 kHz 60.0 - 75.0 Hz Analog RGB, Video 0.7Vp-p 75 ohm Separate TTL (+/-) Stereo (Mini Jack X 1) Stereo (Mini Jack X 1) Stereo (0.2W X 2) 15PIN MINI D-SUB Brightness, Power Switch, Audio Volume Auto Adjust, Contrast, Horizontal Size, Focus, Horizontal Position, Vertical Position, Color, Recall, Black level Language :English, German, French, Spanish Operating : 5 to 35deg. Storage : -20 to 60deg. 30 - 85% RH (Non Condensing) Input : AC 115 - 240V Output : DC12V GI40-US1225 30W (Standby : 5W max.) 399 X 412 X 199 mm 4.5kg VESA DPMS USB standard Rev. 1.1 Self-Powered/Bus Powered Upstream X 1, Downstream X 3 Up 20 deg., Down 0 deg., / Swivel Function DDC1, DDC2B (VESA Standard) Auto Display Adjustment, Digital Smoothing Full Screen Expansion AC Adapter & Cord, RGB Cable, Audio Cable, USB Cable
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2. TROUBLESHOOTING
Check the following for troubles of LCD monitor.
No. Symptom Check Points Treatments Class
Check AC outlet, AC cord, DC 1 Is the Power "ON" to a LCD Monitor ? Jack and Power switch for a LCD monitor Replace an AC Adapter with the 2 Is an AC Adapter defective? No Picture with new one 1 Power Indicator OFF Is the wire harness between main PCB 3 Check the connection and DC IN PCB secured firmly ? Is the Power Supply circuit on main Replace the main PCB with the 4 PCB defective ? new one Check the Power Supply for a 1 Is the Power "ON" to a Computer ? Computer No Picture with Be out of standing by condition, 2 Power Indicator in 2 Is a computer standing by ? by operating to a computer Amber Is the Image Processing circuit on Replace the main PCB with the 3 main PCB defective ? new one Press any key or touch the Is a screen saver programming 1 mouse, to end the screen saver running ? program Check the connection of a signal 2 Is a signal cable connected securely ? cable Disconnected a signal cable ? or Bent Replace a signal cable with the 3 a terminal pin ? new one Is the computer's signal timing not Adjust the computer's signal 4 agreeable to the LCD's specification ? timing, if possible Is the wire harness between Inverter Check the connection of wire 5 PCB and a LCD module secured firmly harness ? No Picture with Is the wire harness between main PCB Check the connection of wire 3 Power Indicator in 6 and Inverter PCB secured firmly ? harness Green Is the wire harness between main PCB and SW/LED PCB or main PCB and Ensure the connection of a wire 7 Brightness control volume connected harness securely ? Is the Brightness control volume Replace the Volume PCB with 8 defective ? new one, and check the screen Replace a LCD module with the 9 Is the LCD module defective ? new one Replace an Inverter unit with the 10 Is the Inverter unit defective ? new one Is the display circuit on main PCB Replace the main PCB with the 11 defective ? new one Be out of standing by condition, 1 Is a computer standing by ? by operating to a computer No Picture with Check the connection of a signal 4 Power Indicator 2 Is a signal cable connected securely ? cable blinking in Green Disconnected a signal cable ? or Bent Replace a signal cable with the 3 a terminal pin ? new one
A B B B A A B A A C A B B
B
B B B B A A C
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No.
Symptom
Check Points
Treatments
Class
White/Grey on whole 5 screen(Nothing on screen)
Is the wire harness between main PCB Check the connection of wire and LCD module secured firmly ? harness Replace a LCD module with the 2 Is the LCD module defective ? new one Replace the main PCB with the 3 Is the main PCB defective ? new one 1 1 Is the wire harness between inverter and a LCD module secured firmly ? Ensure the connection of a wire harness Ensure the connection of a wire harness Replace the main PCB with the new one Adjust the screen correctly Check the specification of a computer Set the size of screen again(refer to User's Manual for computer)
B B B B
6 Dark screen
7
Screen's display range is incorrect
Is the wire harness between one of 2 inverters and main PCB secured firmly ? Is the display circuit on main PCB 3 defective ? Is the adjustment for screen performed 1 correctly ? Is the output level on image from a 2 computer not agreeable to LCD's specification ? 3 Is the size of screen set correctly ? 1
B B A C
A A A A C B A B B A A A B B
Is the adjustment for screen performed Adjust the screen correctly correctly ? Check the connection of a signal 2 Is a signal cable connected securely ? cable 8 Screen is distorted 3 Is a sigil cable extended ? Is the output level on image from a 4 computer not agreeable to LCD's specification ? Is the Image Processing circuit on 5 main PCB defective ? Don't extend a signal cable Check the specification of a computer
Part of colors(R/G/B) is not displayed. 9 Black line appears in vertically
10 No sound
Replace the main PCB with the new one Check the connection of a signal 1 Is a signal cable connected securely ? cable Is the connection between main PCB 2 Check the connector and a LCD module securely ? Is the Image Processing circuit on Replace the main PCB with the 3 main PCB defective ? new one Is the audio cable connected securely Ensure the connection of the 1 ? audio cable Is the position of audio volume at the Set the audio volume at the 2 minimum position ? appropriate position Is the volume setting for an audio Refer to the user's manual for an 3 equipment adequately ? audio equipment Is the wire harness between main PCB Ensure the connection of a wire 4 and Audio PCB securely ? harness Is the wire harness between Audio Ensure the connection of a wire 5 PCB and Volume PCB securely ? harness
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No.
Symptom
Check Points
Treatments
Class
10 No sound
USB devise does not 11 work(a PC does not detect an USB Hub)
USB devise does not work(a PC does not 12 detect an USB devise)
A connected USB devise in self13 powered does not work
Ensure the connection of a wire harness Ensure the connection of a wire harness Replace the Volume PCB with 8 Is the Audio PCB defective ? new one, and check the screen Is a LCD monitor connected to an USB Ensure the connection of the 1 devise securely with USB cable ? USB cable Upon a timing, a PC does not detects 2 Reinstall the USB cable an USB Hub Refer to the user's manual for a Upon a PC's OS or version, a PC 3 PC and OS. Ensure a PC cannot control USB devise supports USB Is the wire harness between main PCB Ensure the connection of a wire 4 or DC IN PCB and USB PCB secured harness firmly ? Is the wire harness between USB PCB Ensure the connection of a wire 5 and a relay PCB for USB secured harness firmly ? Replace the USB PCB with new 6 Is the USB PCB defective ? one Is a LCD monitor connected to an USB Ensure the connection of the 1 devise securely with USB cable ? USB cable Upon a timing, a PC does not detects 2 Reinstall the USB cable an USB devise Is the driver software for a USB devise Refer to the user's manual for an 3 loaded correctly ? USB devise. Reload it to a PC. Replace the USB PCB with new 4 Is the USB PCB defective ? one Provide AC power to a LCD Is the USB devise in self-powered Monitor. Check Warning is not 1 connected with a LCD Monitor AC is displayed. Refer to the User's not providing ? manual for an USB devise, connect an AC Adapter to a LCD Is the connection between the USB 2 Ensure the connection PCB and DC IN PCB secured firmly ? Replace the USB PCB with the 3 Is the USB PCB defective ? new one 6
Is the wire harness between Audio PCB and DC IN PCB securely ? Is the wire harness to speakers 7 securely ?
B B B A A A
B
B B A A A B
A
B B
A It is possible to treated by end-user B It might be possible to treat by end-user in some case. C It must be treated by Professional Technical Staff
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3. MAINTENANCE
How to remove the major components
(1) Stand Cover 1.Place your fingers in a hollow of the Stand Cover. While pressing the Stand Cover hollow inside, and pull it your side. (2) Main unit and Stand 1.Unscrew a Stand at the metal bracket to be secured with a Main unit (4-Screws) 2.Disconnect the USB cable (3) Cabinet 1.Unscrew a Rear Cabinet (6-Screws) 2.While pressing the top portion of a Front Cabinet, pull the hooks your side 3.Disconnect the lead wires to Switch/LED PCB (4) Switch/LED PCB and Brightness Volume PCB 1.Unscrew the Switch/LED PCB and Brightness Volume (6-Screws) 2.Disconnect the leads wire from Switch/LED PCB 3.Disconnect the leads wire from Brightness Volume PCB (5) LCD Panel 1.Unscrew a LCD Panel (4-Screws) 2.Holding a LCD Panel up, then disconnect two lead wires from Inverter unit 3.Disconnect two FPC connectors from the Main Logic PCB (6) Inverter Units 1.Disconnect lead wires to the Main Logic PCB 2.Unscrew the Inverter PCB (4-Screws) (7) Main Logic PCB 1.Disconnect a RGB cable 2.Unscrew the shield plate over the Main Logic PCB (5-Screws) 3.Remove the Inverter connector, DC connector and Switch/LED connector 4.Unscrew a metal bracket to be secured with RGB connector (2-Screws) (8) DC-IN PCB 1.Unscrew the DC-IN PCB (2-Screws) 2.Disconnect the connectors from a Power Switch, the DC connector and the Audio/USB connector (9) Power Switch 1.While pressing the hook of a Power Switch, and pull it out (10) USB PCB in a Stand 1.Unscrew a Stand Base (4-Screws) 2.Remove a Stand Base 3.Unscrew the USB PCB (3-Screws) 4.Disconnect the lead wires from Audio/USB-IN PCB 5.Disconnect the lead wires from AUDIO PCB (11) AD-IN PCB 1.Unscrew the AD-IN PCB (2-Screws) 2.Disconnect the lead wires from USB PCB 3.Disconnect the lead wires from Audio/USB PCB (12) Audio PCB 1.Unscrew the Audio PCB (3-Screws) 2.Disconnect the lead wires from Audio/USB-IN PCB 3.Disconnect the lead wires from USB PCB 4.Disconnect the lead wires from Audio/USB-IN PCB 5.Disconnect the lead wires from Speaker (Right/Left)
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4. BLOCK DIAGRAM
MICRO CONTROLLER
ROM
DB15
Vsync
Hsync
SAMPLING PLL CHEETAH3
TFT XGA LCD PANEL
-8CRC
Red Green Blue
VIDEO PRE-AMP
PANEL CONTROL
POWER SUPPLY
HOT1 COLD1 N.C. 1 2 3
TFT 15-inch Liquid Crystal Display
CN3
HOT1 COLD1 N.C. 1 2 3
CN2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
GND DCLK GND DENA GND VD GND HD GND NC GND BO7 BO6 BO5 BO4 GND BO3 BO2 BO1 BO0 GND GO7 GO6 GO5 GO4 GND GO3 GO2 GO1 GO0 GND RO7 RO6 RO5 RO4 GND RO3 RO2 RO1 RO0 VCC VCC TEST TEST TEST
GND BE7 BE6 BE5 BE4 GND BE3 BE2 BE1 BE0 GND GE7 GE6 GE5 GE4 GND GE3 GE2 GE1 GE0 GND RE7 RE6 RE5 RE4 GND RE3 RE2 RE1 RE0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Inverter Unit
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
5. Connection Diagram
P9 P10
P6
GND DDCLK GND VSYNC GND HSYNC GND DDDA N.C. N.C. BLUE GND GREEN GND RED
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
Analogue Interface P.C.B SANDDUNE2
P3
1 2 3 4 5
+12V GND VR1 VR2 ON(=5V)
1 2 3 4 5
CN1
1 2 3 4 5 6 7 8
1 2 3
VRB1 VRBC VRB2
MENU SEL DOWN UP GND LED_R VCC LED_G
Computer
HEADPHONE OUT
N.C.
J101 CN202 CN2 VR2
1 2 12V GND 1 2 1 2 1 2
CN203
1 2
12V GND
1 2
VR1 VRC VR2 N.C.
1 2 3 4 5 6 7 8 9 10 11 12 13
VGA Port
CN202
1 2 3 4 5 SPOUTLSPOUTL+ SPOUTRSPOUTR+ 1 2 3 4
CN1
Switch / LED P.C.B
CN101
VRB1 VRBC VRB2
Audio P.C.B
CN102
1 2 3 4
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
GND DDCLK GND VSYNC GND HSYNC GND DDDA N.C. N.C. BLUE GND GREEN N.C. RED
1 2 3
N.C. N.C.
MUTE 12V GND
1 2
USB Downstream Port
1 2 3
1 2 3 4 Frame
R GND L GND
1 2 3 4
-9P5 P7
P2
DC IN P.C.B
AC Plug
J201
AC Adapter
CN201
CN201
VCC -DATA +DATA GND F_GND
CN3 CN6
1 2 3
Power Switch
CN50
1 2 3 4 Frame VCC -DATA +DATA GND F_GND
Speaker (L)
VR1
Speaker (R)
USB Upstream Port
CN203
CN4 CN201 CN204
VCC -DATA +DATA GND F_GND 1 2 3 4 Frame 1 2 3 4 5 VCC2 -DATA2 +DATA2 GND GND 1 2 3 4 5
USB P.C.B
CN2 CN202
1 2 3 4 Frame
VCC -DATA +DATA GND F_GND
VCC -DATA +DATA GND F_GND
CN5
1 2 3 4 Frame VCC -DATA +DATA GND F_GND VCC -DATA +DATA GND F_GND
Brightness Volume P.C.B
USB Device
LINE IN
USB/AUDIO Connector P.C.B
VCC -DATA +DATA GND F_GND
6. TABLE OF SIGNAL NAME
Symbol RED GREEN BLUE DDDA(ID1) HSYNC VSYNC DDCK(ID3) BE7 BE6 BE5 BE4 BE3 BE2 BE1 BE0(EVEN) GE7 GE6 GE5 GE4 GE3 GE2 GE1 GE0(EVEN) RE7 RE6 RE5 RE4 RE3 RE2 RE1 RE0(EVEN) DCLK DENA VD HD BO7 BO6 BO5 BO4 BO3 BO2 BO1 BO0 GO7 GO6 GO5 GO4 GO3 GO2 GO1 Signal Name RED/Analog Video Signal GREEN/Analog Video Signal BLUE/Analog Video Signal DDC Data Horizontal Synchronizing Signal Vertical Synchronizing Signal DDC Data Clock BLUE Data[MSB]-Even BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data[LSB]-Even GREEN Data[MSB]-Even GREEN Data GREEN Data GREEN Data GREEN Data GREEN Data GREEN Data GREEN Data[LSB]-Even RED Data[MSB]-Even RED Data RED Data RED Data RED Data RED Data RED Data RED Data[LSB]-Even Data Clock Data Enable Vertical Synchronizing Signal Horizontal Synchronizing Signal BLUE Data[MSB]-Odd BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data BLUE Data[LSB]-Odd GREEN Data[MSB]-Odd GREEN Data GREEN Data GREEN Data GREEN Data GREEN Data GREEN Data Location P6-1 P6-2 P6-3 P6-12 P6-13 P6-14 P6-15 P10-2 P10-3 P10-4 P10-5 P10-7 P10-8 P10-9 P10-10 P10-12 P10-13 P10-14 P10-15 P10-17 P10-18 P10-19 P10-20 P10-22 P10-23 P10-24 P10-25 P10-27 P10-28 P10-29 P10-30 P9-2 P9-4 P9-6 P9-8 P9-12 P9-13 P9-14 P9-15 P9-17 P9-18 P9-19 P9-20 P9-22 P9-23 P9-24 P9-25 P9-27 P9-28 P9-29 Notes
POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY +
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Symbol GO0 RO7 RO6 RO5 RO4 RO3 RO2 RO1 RO0 TEST TEST TEST +12V VR1,2 ON=5V VR1,2 VRC MENU SEL DOWN UP LED R LED G
Signal Name GREEN Data[LSB]-Odd RED Data[MSB]-Odd RED Data RED Data RED Data RED Data RED Data RED Data RED Data[LSB]-Odd Test Signal Out(*) Test Signal Out(*) Test Signal Out(*) for Output Voltage (+) for Contrast Volume for Back-Light Control Brightness Control Brightness Control Menu Key Input Select Key Input Down Key Input Up Key Input LED/RED, Control Signal LED/GREEN, Control Signal
Location P9-30 P9-32 P9-33 P9-34 P9-35 P9-37 P9-38 P9-39 P9-40 P9-43 P9-44 P9-45 P3-1 P3-3,4 P3-5 P5-1,3 P5-2 P2-1 P2-2 P2-3 P2-4 P2-6 P2-8
Notes POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY + POLARITY +
H: Light ON
* : This terminal must be opened at System-side.
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20
19
21
CAUTION
Parts marked as Are very important to secure safety. In case of replacement, it is required to use designted parts for safety.
7-2 Parts List
REF NO.
PART No. OUTER (632 880 4986) (632 613 4436) INDIVIDUAL (632 834 2815) (632 834 2839) (632 834 2891) (632 297 9901) (632 607 4824) (632 298 2376) (632 607 4794) (632 840 4056) (632 840 3639) ACCESSORY (632 885 5698) (632 887 4460) CABINET1 (632 888 6302) (632 888 6319) (632 880 4993) CHASSIS (632 888 6333) STAND (632 888 6388) (632 832 1957) CHASSIS ELC. (632 888 6326) (632 825 8291) (632 888 6364) (632 880 5488) (632 873 0926) (632 850 6095) (632 888 8689) (632 872 9494) (632 872 9715) (632 883 7083) PC BOARD 1 (632 888 6340) PC BOARD 4 (632 888 6357) PC BOARD 5 (632 893 0456) PC BOARD 6 (632 893 0463) PC BOARD 7 (632 893 0470)
DESCRIPTION OUTER CARTON LABEL, BARCODE STYRO-FOAM CUSHION, R STYRO-FOAM CUSHION, L PAD, ACCESSORY POLYETHYLENE BAG, 450X425X380 POLYETHYLENE BAG, L180X270 POLYETHYLENE BAG, 120X320 POLYETHYLENE BAG, L120X230 PAD, CUSHION PAD INSTRUCTION MANUAL, ENGLISH INSTRUCTION MANUAL, GERMANY CABINET ASS'Y, 150AT BOTTOM LID ASS'Y, 150T RATING PLATE SHIELD CASE ASS'Y STAND ASS'Y COVER, STAND LIQUID CRYSTAL DIS. ASS'Y FFC ASS'Y DC-AC INVERTER ASS'Y AC ADAPTER AC CORD POWER SWITCH ASS'Y WIRE HARNESS ASS'Y VGA CABLE, 1.5M USB CABLE, 1.5M AUDIO CABLE, 1.5M PW BOARD ASS'Y, MAIN PW BOARD ASS'Y, DC-IN PW BOARD ASS'Y, AUDIO PW BOARD ASS'Y, AUDIO/USB-IN PW BOARD ASS'Y, USB
Q'ty 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
NOTES
FOR MONITOR FOR USER'S GUIDE FOR RGB CABLE FOR AC ADAPTER, AC CORD
1 8 18 4 10 9 3 2 7 16 17 11 12 13 14 15 5 6 20 21 19
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APPENDIX Version of Firmware
The Version of Firmware is displayed on screen.
Turn the Power Switch to `OFF'. While pressing of the [SELECT] button, turn the Power Switch to `ON'.
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