SERVICE MANUAL SPECTRUM Series LCD Monitor LM-700/LM-700A P/N : 41A50-144 Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
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THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS, MANUFACTURE DATA : JULY.
1. SPECIFICATIONS FOR LCD MONITOR General specifications LCD-PANEL : Active display area 17 inches diagonal Pixel pitch 0.264 mm x 0.264 mm 1280 x 1024 RGB vertical stripe arrangement Pixel format Display Color : 8-bit, 16.7 million colors ● External Controls : Power On/Off, Auto key, Left key, Right key ( for 4-key ) OSD menu Controls ●...
LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an Inverter module, keyboard and External Adapter which house the flat panel control logic, brightness control logic, DDC and DC-DC conversion The Inverter module will drive the backlight of panel . The Adapter will provides the 12V DC-power 5 Amp to Main-board and Inverter module .
2. PRECAUTIONS AND NOTICES ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel surface by touching with bare hands (Polarizer film, surface of LCD panel is easy to be flawed) In the LCD panel, the gap between two glass plates is kept perfectly even to maintain display characteristic and reliability.
3. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the LM700 LCD monitor display. Position the display on the desired operation and plug–in the power cord into External Adapter AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.
4. ADJUSTMENT ADJUSTMENT CONDITIONS AND PRECAUTIONS Adjustments should be undertaken only on following function : contrast, brightness focus, clock, h-position, v-position, red, green, blue since 6500 color & 7800 color. ADJUSTMENT METHOD Press MENU button to activate OSD Menu or make a confirmation on desired function, Press Left/Right button to select the function or done the adjustment.
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adjust the GREEN on OSD, until chroma 7120 indicator reached G=100 adjust the BLUE on OSD, until chroma 7120 indicator reached B=100 repeat above procedure ( item 8,9,10) until chroma 7120 RGB value meet the tolence =100±2 switch the chroma-7120 to xyY mode With press “MODE” button Adjust the Contrast on OSD window until the Y measurement on chroma 7120 reached the value Y= 180 cd/m Press 78 on OSD window to save the adjustment result...
2. Clock adjustment Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern). Adjust until the vertical-Stripe-shadow as wide as possible or no visible. This function is adjust the PLL divider of ADC to generate an accurate pixel clock Example : Hsyn = 31.5KHz Pixel freq.
5. CIRCUIT-DESCRIPTION SPECIAL FUNCTION with PRESS-KEY A). press Menu button during 2 seconds along with plug-in the DC Power cord: That operation will set the monitor into “Factory- mode”, in Factory mode we can do the White balance adjustment with RS232 , and view the Backlight counter (this counter is use to record the panel activate hours ,for convenient the maintainer to check the panel backlight life time) In Factory mode, OSD-screen will locate in left top of screen.
SIMPLE-INTRODUCTION about LM700 chipset 1. GMZAN1 ( all-in-one chip solution for ADC, OSD, scalar and interpolation) : USE for computer graphics images to convert analog RGB data to digital data with interpolation process, zooming, generated the OSD font , perform overlay function and generate drive-timing for LCD-PANEL. 2.
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Main-board Block diagram Input analog RGB & H,V,& ddc signal & Rs232 communication GMZAN1 (U200) Data Digital RGB DDC-chip LVDS chip (U601, PANEL U602) Panel Control Signal: Dhs, Dvs, Dclk Oscillator 50 mhz Panel Power 5V Communication signal: Hclk,Hfs,Hdata0 Panel-Power Control (U202) MCU ( U302 ) Crystal 20 mhz...
SOFTWARE FLOW CHART Power-On Subrotine CHART POWER-ON START Initial MCU I/O, Interrupt vector & Ram Initial 1.POC (backlight counter) Check Eeprom is empty ? 2. Clr all mode value Check White-balance data(6500 & 7800) same with the backup data ? Check POC( backlight counter) data same with the backup data ? IF not same, overwrite the data with backup value.
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MAIN SUBROTINE LOOP Main loop start Process Power-saving status ( according to below flow-chart result) Check GMZAN IFM status .is change or not. And check Signal cable status ( cable not connected or not ) ** IFM is the register which measured the HSYN & Vsyn status Yes, IFM have change Wake-up GMZAN1 (because GMZAN1 was in...
6. A). Interface-Board Trouble-Shooting chart *Use the PC Win 98 white pattern, with some icon on it, and Change the Resolution to 640x480 60 Hz / 31 KHz **NOTICE : The free-running freq. of our system is 48 KHz / 60 Hz, so we recommend to use another resolution to do trouble shooting, this trouble shooting is proceed with 640x480 @60Hz 31Khz NO SCREEN APPEAR DC-Power Part...
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PANEL-POWER CIRCUIT Check the PPWR panel power relative circuit, R223, Q200,U202(pin 5,6,7,8) In normal operation, when LED =green, R223 check R225 should have response from 12V to 0V should =0 v, When we switch the power switch from on to off If PPWR no-response when the power switch Turn on and turn off, replace the U200-GMZAN1 OK,R225 have response...
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II (a) THE SCREEN is Abnormal , stuck at white screen, OSD window can’t appear, but keyboard & LED was normal operation. At general, this symtom is cause by missing panel data or panel power, so we must check our wire-harness which connected to panel or the panel power controller (U202) Check if the Wire harness from CN601 &...
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KEYBOARD BLOCK check Check U302 MCU pin 43,42,41,40,39 at Mechanical was stuck, Check ! High state(5V)? without press any key Replace Tact-switch SW105 at keyboard if still no work replace U302 MCU at main-board and Press power key and check U302 pin 43 check MCU relative reset circuit, and crystal = low (0V) ? Check U302 pin 38 (LED green) will have...
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POWER-BLOCK check *Note : the Waveform of U304 pin 2 can determined the power situation 1. stable rectangle waveform with equal duty, freq around 150K-158KHz that means all power of this interface board is in normal operation ,and all status of 5V & 3.3V is working well 2.
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III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN’T BE FIXED BY AUTO KEY ** NOTE: There is so many kind of interferences, 1). One is cause by some VGA-CARD that not meet VESA spec or power grounding too bad that influence our circuit 2).other is cause by external interferences, move the monitor far from electronic equipment.( rarely happened) Use DOT-pattern, or win98/99 shut-down...
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There is an interferences in DOS MODE NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen, if the screen not full , the auto- configuration will fail. So in dos mode ,just set your “CLOCK” in OSD-MENU to zero or use some EDITOR software which can full fill the whole screen (ex: PE2, HE) and then press “AUTO”...
S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 1.SAMPO PART NO .: L0037 ,AOC PART NO.: 79AL17-1-S 2.SCOPE : this is to specify the requirements of the subject parts used in CHI-MEI (M170E1) 17 inch (4 C.C.F.L.) LCD monitor.
S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 5.FUNCTION SPECIFICATIONS: The data test with the set of SAMPO, and the test circuit is as below. SYMBOL MIN.
S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 7.CIRCUIT DIAGRAM: Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 8.PART LIST 8-1 COMPONENTS LIST: REF. PART NAME PART NUMBER DESCRIPTION SUPPLIER REMARK CON1 CONNECTOR VCNCP0015-EJSTA S5B-PH-SM3-TB 〃...
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S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 8-2 COMPONENTS LIST: REF. PART PART NUMBER QTY DESCRIPTION SUPPLIER REMARK NAME 〃 VCLRCN1HB102K-A SMD 0805 1000PF/50V 〃...
S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 9. TROUBLE SHOOTING 9-1 NO POWER: CHECK ON FUSE TO CHANGE FAIL F1 Vin=12 F1= 4.0A/63V TO CHANGE TO CHANGE TO CHECK ON Q4&Q6...
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S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 9-2 HIGHT VOLTAGE PROTECTION: 1. SHORT R30 OPEN LOAD 2. TEST C14 INPUT POINT TO CHANGE ON VOLTAGE Vh=1600 ±100V rms FAIL PT1 OR PT2...
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S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 9-4. ENBALE ABNORMALITY: IF ENBALE ABNORMALITY 1. TO CHECK IC PIN 9 TURN NO FAIL TO CHANGE ON Q1&Q2 HAVE 12 VOLTAGES FUNCTION TEST OK! PASS...
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- 9 - S A M P O C O R P O R A T I O N TROUBLE SHOOTING OF CHI-MEI INVERTER ( DIVTL0037-D42- -) 9-6 TRANSFORMER ABNORMALITY: FAIL IF TRANSFORMER ABNORMALITY TO TO CHANGE ON C3&C4 CHECK C3&C4 CHIP OUTLINE OR OR TRANSFORMER TRANSFORMER PASS...
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6 C). ADAPTER-MODULE Trouble shooting chart The following spec & block-diagram is offer by CHI-SAM –COMPANY, for External Adapter part number : 80AL17-1-CH ( Black), 80AL17-2-CH ( White) AC ADAPTER CH-1205 TROUBLE SHOOTING NO VOLTAGE O/P REPLACE CHECK BD101 F101 AC VOLT.
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I.) Adapter Schematic CH-1205 Please see the ADAPTER-SCHEMATIC in the end of this Document ( page 75) Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
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IV. ADAPTER BOM LIST ( PART no. 80AL15-2-LI) Item Reference Part Quantity Cat.NO. BD101 DIODE BRIDGE KBL405G 600V/4A 1 PCS 15D7L405G6 CN101 AC POWER SOCKET 1 PCS 64P21-0001 BEAD1,BEAD2,BEAD3,BEAD4 BEAD 3.5*3.2*1.6mm 4 PCS 62C-353216 C116 CAP CER 102P/500V +-10% Y5P 1 PCS 99426A1025 C105...
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86 FOR FRONT HEATSINK 導熱墊片 TCR- 05 15*25-ASAHI 1 PCS 85011-0001 87 FOR FRONT HEATSINK 導熱墊片 TCR- 10 10*20-ASAHI 1 PCS 85100-0001 3M擋牆膠帶#44 1L 35*40mm 1 PCS 80400-0001 FRONT COVER 129.3*63.8*19.34mm 1 PCS 0810400020 BASE COVER 129.3*63.8*18.7mm 1 PCS 0820400020 DC OUTPUT POWER CABLE UL1185#18AWG ψ5.5*ψ2.5 1 PCS 56L1807811...
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6 D). AUDIO-MODULE Trouble shooting chart I.) NO VOICE OUTPUT Plug-out the DC power , make sure the monitor is in OFF status . Use OHM-METER measure U1 pin 2, 4 Check J1,J2 is well connected? Measured J2 pin 4,5 & 2,3 is (channel-A ) is speaker well connected? well connected ? Measure U1 pin 10,12 ( channel B) is speaker...
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II.) SOUND DISTORTION Check U1 pin 2, 4 10, 12 is the Check U1 voltage output = VCC / 2 . ? CHECK SPEAKER AUDIO BOM Bill Of Materials September 7,2001 18:09:14 Page1 Item Quantity Reference Part ______________________________________________ C1,C2,C4 1uF 2200uF/25V 10uF/50V C6,C7...
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GMZAN1 The gmZAN1device utilizes Genesis’ patented third-generation Advanced Image Magnification technology as well as a proven integrated ADC/PLL to provide excellent image quality within a cost effective SVGA/XGA LCD monitor solution. As a pin-compatible replacement for the gmB120, the gmZAN1 incorporates all of the gmB120 features plus many enhanced features;...
1.3 Pin Description Unless otherwise stated, unused input pins must be tied to ground, and unused output pins left open. Table 1 : Analog-to-Digital Converter PIN # Name I/O Description Digital power for ADC encoding logic. Must be bypassed with 0.1uF capacitor to ADC_VDD2 pin 78 (ADC_GND2) Digital GND for ADC encoding logic.
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Table 2 : Host Interface (HIF) / External On-Screen Display PIN # Name I/O Description Host Frame Sync. Frames the packet on the serial channel. Clock signal input for the 3-wire serial communication. HCLK Data signal for the 3-wire serial communication. HDATA Resets the gmZAN1 chip to a known state when low.
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Table 3 : Clock Recovery / Time Base Conversion PIN # Name I/O Description Digital power for Destination DDS (direct digital synthesizer). Must be bypassed DVDD with a 0.1uF capacitor to digital ground plane. Analog ground for Destination DDS DAC. Must be directly connected to the DAC_DGNDA analog system ground plane.
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Description PIN # Name 2pxl/clk 2pxl/clk 1pxl/clk 1pxl/clk 8bit 6-bit 8-bit 6-bit PdispE This output provides a panel display enable signal that is active when flat panel data is valid. This output provides the panel line clock signal. This output provides the frame start signal. PCLKA This output is used to drive the flat panel shift clock.
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1.4 System-level Block Diagram CVDD ADC_VDD RVDDA gmZAN1 Core ADC_GND RGNDA TCLK Blue Green SVDDA RVDDA Hsync To Clock SGNDA Vsync Generator DVDDA DGNDA R+,G+,B+ Even Data On-Screen OSD-FSW OSD-FSW PCLKA Display OSD-CLK Controller OSD-HREF OSD-VREF PDISPE Odd Data MPU with HCLK EPROM +12V...
1.5 Operating Modes The Source Clock (also called SCLK in this document) and the Panel Clock are defined as follows: The Source Clock is the sample clock regenerated from the input Hsync timing (called clock recovery) by SCLK DDS (direct digital synthesis) and the PLL. The Panel Clock is the timing clock for panel data at the single pixel per clock rate.
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1.5.4 Downscaling Panel Clock frequency < Source Clock frequency Panel Hsync frequency < Input Hsync frequency Panel Vsync frequency = Input Vsync frequency This mode is used when the input resolution is greater than the panel resolution, to provide enough of a display to enable the user to recover to a supported resolution.
2. FUNCTIONAL DESCRIPTION Figure 3 below shows the main functional blocks inside the gmZAN1 2.1 Overall Architecture Figure 3. Block Diagram for gmZAN1 On-Screen Display Control Analog Triple Source Scaling Gamma Panel Timing Engine Control Timing Panel Measurement (CLUT) Control / Generation Dither Pixel...
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The SCLK frequency (1/SCLK period) can be set to the range of 10-to-135 MHz. Using the DDS (direct digital synthesis) technology the clock recovery circuit can generate any SCLK clock frequency within this range. The pixel clock (DCLK or destination clock) is used to drive a panel when the panel clock is different from SCLK (or SCLK/2).
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The table below summarizes the characteristics of the clock recovery circuit. Table 7. Clock Recovery Characteristics Minimum Typical Maximum SCLK Frequency 10MHz 135 MHz Sampling Phase Adjustment 0.5 ns/step, 64 steps Patented digital clock synthesis technology makes the gmZAN1 clock circuits very immune to temperature/voltage drift.
2.3 Analog-to-Digital Converter 2.3.1 Pin Connection The RGB signals are to be connected to the gmZAN1 chip as described in Table 8 and Table 9. Table 8. Pin Connection for RGB Input with Hsync/Vsync GmZAN1 Pin Name (Pin Number) CRT Signal Name Red+(#95) Red- (#94) N/A (Tie to Analog GND for Red on the board)
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2.3.2 Sync. Signal Support The gmZAN1 chip supports digital separate sync (Hsync/Vsync), digital composite sync, and analog composite sync (also known as sync-on-green). All sync types are supported without external sync separation / extraction circuits. Digital Composite Sync The types of digital composite sync inputs supported are: OR/AND type: No Csync pulses toggling during the vertical sync period XOR type: Csync polarity changes during the vertical sync period The gmZan1 provides enough sync status information for the firmware to detect the digital composite sync type.
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The display start/end registers store the first and the last pixels/lines of the last frame that have RGB data above a programmed threshold. The reference point of the STM block is the same as that of the source timing generator (STG) block: The first pixel: the pixel whose SCLK rising edge sees the transition of the HSYNC polarity from low to high.
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2.5.1 Scaling Filter The gmZAN1 scaling filter uses an advanced adaptive scaling technique proprietary to Genesis Microchip Inc. and provides high quality scaling of real time video and graphics images. This is Genesis’ third generation scaling technology that benefits from the expertise and feedback gained by supporting a wide range of solutions and applications.
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Table 13. gmZAN1 TFT Panel Interface Timing Signal Name Typical Unit Period 16.67 2048 lines Frequency Front porch 2048 lines Back porch 2048 lines Pulse width 2048 lines PdispE Panel height 2048 lines Disp. Start from VS t6 2048 lines PVS set up tp PHS 2048 PCLK *1...
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Figure 7. timing Diagrams of the TFT Panel Interface (One pixel per clock) (a) Vertical size in TFT (b) Vsync width and display position in TFT RGBs (c) Horizontal size in TFT PCLK RGB data from data paths Panel Background Color Displayed (d) Hsync width in TFT Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
Figure 8. Data latch timing of the TFT Panel Interface (a) Two pixel per clock mode in TFT PCLK R2,(N:0) R4,(N:0) R0,(N:0) G0,(N:0) G2,(N:0) B2,(N:0) B0,(N:0) R1,(N:0) R3,(N:0) G1,(N:0) G3,(N:0) B1,(N:0) B3,(N:0) (b) One pixel per clock mode in TFT PCLK R(n:0) G(n:0)
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2.6.2.1 State 0 (Power Off) The Pbias signal and Ppower signal are low (inactive). The panel controls and data are forced low. This is the final state in the power down sequence. PM is kept in state 0 until the panel is enabled. 2.6.2.2 State 1 (Power On) Intermediate step 1.
2.6.3 Panel Interface Drive Strength As mentioned previously, the gmZAN1 has programmable output pads for the TFT panel interface. Three groups of panel interface pads (panel clock, data, and control) are independently controllable and are programmed using API calls. See the API reference manual for details. Table 14.
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2.7.1 Serial Communication Protocol In the serial communication between the microcontroller and the gmZAN1, the microcontroller always acts as an initiator while the gmZAN1 is always the target. The following timing diagram describes the protocol of the serial channel of the gmZAN1 chip. Figure 10.
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Table 15 summarizes the serial channel specification of the gmZAN1. Refer to Figure 10 for the timing parameter definition. Table 15. gmZAN1 Serial Channel Specification Parameter Min. Typ. Max. Word Size (Instruction and Data) 12 bits HCLK low to HFS high (t1) 100 ns HFS low to HCLK inactive (t2) 100 ns...
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2.8.1 OSD Color Map Both the internal and external OSD display use a 16 location SRAM block for the color programming. Each color location is a twelve-bit value that defines the upper four bits of each of the 8 bit Red, Blue and Green color components as follows: D3:0 Blue;...
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To improve the appearance and make it easy to find the OSD window on the screen, the user may select optional shadowing (3D effect). The “Shadow” feature operates in the same manner as in the B120; that is, it produces a region of half intensity (scaler data) pixels of the same width and height as the OSD window, but offset to the right and down by 8 pixels/lines (the border width setting has no effect).
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3. ELECTRICAL CHARACTERISTICS Table 20. Absolute Ratings Parameter Min. Typ. Max. Note PVDD 5.6 volts CVDD 5.6 volts Vss-0.5 volt Vcc+0.5V Operating temperature 0 degree C 70 degree C Storage temperature -65 degree C 150 degree C Maximum power consumption Table 21.
MECHANICAL OF CABINET FRONT DIS-ASSEMBLY For temporary, this page still not available. Wait for mechanical drawing ! Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
POWER KEY PAD 4060 CABLE COVER 4061 AUDIO POWER BUTTON 4062 VOLUME KNOB 4063 SCREW COVER 1Y L FRONT PANEL (AOC) Y 1L BACK COVER SUPPORT FRONT (AUDIO) Y 3L SUPPORT BACK BASE ARM COVER LCD HINGE ID LABEL ( LM-700A)
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PARTS LIST OF CABINET ( continue) LOCATION T780KMGHBAA0A SPECIFICATION 1030 10128 SCREW 1030 12128 SCREW 3X12mm 1030 12128 SCREW 3X12mm 750A 170 3 LCD-PANEL M170E1-01 BY CHI-MEI Free Datasheet Download http://www.Chinadz.Com http://www.Icver.Com...
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PARTS LIST OF CONVERSION BOARD LOCATION CBPC780GM SPECIFICATION CN303 33A 3802- WAFER 5P RIGHT ANELE PITCH 2.0 CN302 33A 3802- WAFER 9P RIGHT ANELE PITCH 2.0 CN602 33A 3802- WAFER 10P RIGHT ANELE PITCH CN601 33A 3802- WAFER 14P RIGHT ANELE PITCH R319 33A 8009- 2 PIN MIN.
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PARTS LIST OF KEY PC BOARD LOCATION KEPC780EK Quantity SPECIFICATION TP101 TP102 3252 WAFER 3P 3.96mm 90 LABEL ( KEPC780EK) Q101 PP T Q102 PP T R101 6021 0352 T 10K OHM 5% 1/6W R102 6021 0352 T 10K OHM 5% 1/6W R103 6021 0352 T...
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PARTS LIST OF DC-POWER BOARD LOCATION DCPC780A3 Quantity SPECIFICATION 3278 2P PLUG B2B-XHA/JST B2B-XHA/JS P3-1 3278 3P PLUG B3B-XHA/JST B3B-XHA/JS 331 6 330uF+- 20% 35V 3.5mm P JACK SCJ-0356A-B-X SC DC POWER JACK SCD-014A BY SC 27 A DC POWER CORD 715A LCD USB &...
POWER SYSTEM AND CONSUMPTION CURRENT ADAPTER MODULE INVERTER MODULE Input AC 110V, 60Hz/240V, 50Hz Input DC 12V Output DC 12V 5A Output AC 1500V/30K-80KHz Current 14mA Main board power system LM2596S-5, 12V to 5V (5A SPEC) To CPU, Eeprom, 24c21, control-inverter-on.off 860mA when Cable not Connected 841mA when Normal operation To Chi-Mei Panel around 1250mA...