Table of Contents
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19" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Revision List.................................................................2
Important Safety Notice................................................3
1.Monitor Specification...................................................4
2.LCD Monitor Description.........................................5
3.Operation Instruction.................................................6
3.1 Control Buttons......................................................6
3.2 Attaching the Cables...............................................7
3.3 Adjusting the Picture..................................................7
4.Input/Output Specification........................................10
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4.1 Input Signal Connector...........................................10
4.2 Factory Preset Display Modes.................................10
4.3 Panel Specification...............................................11
5.Block Diagram.........................................................14
5.1 Software Flow Chart...........................................14
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
TABLE OF CONTENTS
Page Description
5.2 Electrical Block Diagram...................................16
6.Schematic.............................................................18
6.1 Main Board..........................................................18
6.2 Power Board......................................................23
6.3 Key Board.........................................................26
7.PCB Layout...........................................................27
7.1 Main Board.........................................................27
7.2 Power Board.......................................................29
7.3 Key Board...........................................................31
8.Maintainability.........................................................32
8.1 Equipments and Tools Requirement....................32
8.2 Trouble Shooting................................................32
9.White-Balance, Luminance adjustment...................38
10.Monitor Exploded View......................................40
11.BOM List...............................................................41
SAFETY NOTICE
1
Casper 19CSPR
Horizontal Frequency
30kHz - 83kHz
Page
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Table of Contents
Summary of Contents for Casper 19CSPR
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Page 1: Table Of Contents
19″ LCD Color Monitor Casper 19CSPR Service Service Service Horizontal Frequency 30kHz – 83kHz TABLE OF CONTENTS Description Page Description Page 5.2 Electrical Block Diagram….…...………..…..…...16 Table Of Contents..……..……......…..1 6.Schematic……………...........…18 Revision List.….....……......………..2 6.1 Main Board.……...……..........18 Important Safety Notice.…………....………..3 6.2 Power Board..………..……........23 1.Monitor Specification.......…………..4... -
Page 2: Revision List
19″ LCD Color Monitor Casper 19CSPR Revision List Revision Date Revision History TPV Model Feb.-26-09 Initial Release T98SM5NBX2KPAN... -
Page 3: Important Safety Notice
19″ LCD Color Monitor Casper 19CSPR Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. -
Page 4: Monitor Specification
19″ LCD Color Monitor Casper 19CSPR 1. Monitor Specifications Driving system 19" TFT Color LCD LCD Panel Viewable Image Size 481mm diagonal Pixel pitch 0.2835mm( H ) × 0.2835mm( V ) Video R,G,B Analog Interface Separate Sync. H/V TTL Input H-Frequency 30kHz –... -
Page 5: Lcd Monitor Description
19″ LCD Color Monitor Casper 19CSPR 2. LCD Monitor Description The LCD monitor will contain a main board, a power board and a key board which house the flat panel 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. -
Page 6: Operation Instruction
19″ LCD Color Monitor Casper 19CSPR 3. Operating Instructions General Instructions 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. -
Page 7: Attaching The Cables
19″ LCD Color Monitor Casper 19CSPR Orange — Off mode. OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. - Page 8 19″ LCD Color Monitor Casper 19CSPR The OSD Message Main Main Menu Sub Menu Menu Sub Menu Description Item Item Icon Brightness Backlight Adjustment Contrast Contrast from Digital-register. Standard Standard Mode Text Text Mode Internet Internet Mode Game Game Mode...
- Page 9 19″ LCD Color Monitor Casper 19CSPR Main Main Menu Sub Menu Menu Sub Menu Description Item Item Icon Warm Recall Warm Color Temperature from EEPROM. Normal Recall Normal Color Temperature from EEPROM. Cool Recall Cool Color Temperature from EEPROM. sRGB Recall SRGB Color Temperature from EEPROM.
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Page 10: Input/Output Specification
19″ LCD Color Monitor Casper 19CSPR 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Green Ground Blue Ground Ground DDC-Serial Data Detect Cable H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground 15 - Pin Color Display Signal Cable 4.2 Factory Preset Display Modes... -
Page 11: Panel Specification
19″ LCD Color Monitor Casper 19CSPR 4.3 Panel Specification LTM190M2-L31 is a color active matrix liquid crystal display(LCD) that uses amorphous silicon TFT(Thin Film Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light unit. - Page 12 19″ LCD Color Monitor Casper 19CSPR 4.3.2 Optical Characteristics...
- Page 13 19″ LCD Color Monitor Casper 19CSPR 4.3.3 Electrical Characteristics TFT LCD Module Back Light Unit...
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Page 14: Block Diagram
19″ LCD Color Monitor Casper 19CSPR 5. Block Diagram 5.1 Software Flow Chart... - Page 15 19″ LCD Color Monitor Casper 19CSPR REMARK: 1) MCU initializes. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
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Page 16: Electrical Block Diagram
19″ LCD Color Monitor Casper 19CSPR 5.2 Electrical Block Diagram 5.2.1 Main Board Panel Interface Crystal 14.318MHZ (CN403) (X401) Scalar TSUM1PFR FLASH ROM Key Control Interface SST25LF020A (Include ADC, OSD, MCU) (CN401) (U402) (U401) D-Sub Connector (CN101) - Page 17 19″ LCD Color Monitor Casper 19CSPR 5.2.2 Power Board AC input +16V Transformer Bridge Rectifier EMI filter Rectifier diodes and Filter (T901) Start Resistor (R904,R905,R906) PWM Control Power Switch LD7552DPS (Q901) (U901) Regulator Photocoupler (IC903) (IC904) Inverter +16V Transformer MOSFET...
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Page 18: Schematic
19″ LCD Color Monitor Casper 19CSPR 6. Schematic 6.1 Main Board 715G2904 1 TSUM1PFR SCHEMATIC XGA/SXGA LVDS OUTPUT DSUB_R+ DSUB_R+ VCC1.8 DSUB_R- DSUB_R- DSUB_G+ DSUB_G+ VCC3.3 DSUB_G- DSUB_G- VCC1.8 DSUB_SOG DSUB_SOG CMVCC DSUB_B+ DSUB_B+ DSUB_5V DSUB_B- DSUB_B- VCC3.3 CMVCC1 DSUB_H... - Page 19 19″ LCD Color Monitor Casper 19CSPR H_Sy nc R101 0R05 1/10W 5% R102 100R 1/16W 5% DSUB_H V_Sy nc R103 100R 1/16W 5% FB102 DSUB_V R104 C101 VGA_B+ DSUB_B+ VCC3.3 R105 R106 C102 C103 BEAD 2K2 1/16W 5% 2K2 1/16W 5% 100R 1/16W 5% 0.047uF...
- Page 20 19″ LCD Color Monitor Casper 19CSPR AVDD VDDP VDDC VCC3.3 VDDP AVDD FB401 U401 VCC3.3 300OHM VCTRL VCTRL C403 C404 LVA3P 0.1uF/16V 0.1uF/16V DSUB_R+ RIN0P LVA3M DSUB_R- RIN0M PA[0..1] DSUB_G+ GIN0P PA[0..1] DSUB_G- GIN0M LVA2P DSUB_SOG SOGIN0 LVA2M DSUB_B+ BIN0P...
- Page 21 19″ LCD Color Monitor Casper 19CSPR PANEL_VCC CN403 PA[0..1] PB[0..9] PA[0..1] PB[0..9] R434 C420 PA[4..9] PA[4..9] 330 OHM 1/4W 0.1uF/16V CMVCC AO3401L CMVCC R433 C419 R435 10K 1/16W 5% 0.1uF/16V PANEL_VCC 4K7 1/16W 5% Q405 AO3401 R436 FB402 CONN 100K 1/16W 5%...
- Page 22 19″ LCD Color Monitor Casper 19CSPR ESD_VCC 2 DSUB_5V CMVCC DSUB_5V 2 5, 6 CMVCC VCC3.3 VCC3.3 D403 D401 BAT54C NC/BAV99 CN404 VCC3.3 R437 R439 CMVCC1 SM340A D402 10K 1/16W 5% 10K 1/16W 5% CMVCC CMVCC1 VCC1.8 CMVCC BKLT-EN Q410...
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Page 23: Power Board
19″ LCD Color Monitor Casper 19CSPR 6.2 Power Board 715G2824 2 2 D909 NC/31DQ10FC R918 L904 100 OHM 1/4W 2A(INVERTER) R919 100 OHM 1/4W +16V FB904 C912 R920 BEAD 0.001uF ZD902 100 OHM 1/4W R946 RLZ18B 150 OHM 2W C917... - Page 24 19″ LCD Color Monitor Casper 19CSPR CN801 CONN T801 R801 0R05 1/8W C801 18pF/6KV L801 +16V NC / L R802 CN802 100R 1/8W C825 CONN 18pF/6KV R804 0R05 1/8W R805 NC/4K7 1/10W 5% R810 Q802 R808 Q801 R850 15R 1/4W 5%...
- Page 25 19″ LCD Color Monitor Casper 19CSPR +5V1 +5V1 C604 C602 C603 R602 0.47uF/16V 100uF/25V 0.47uF/16V 10K 1/10W 5% R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% CN602 R609 IC601 IC APA2069 LOUT- WAFER 2.0MM 4P R604 SE/BTL LOUT- CN601...
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Page 26: Key Board
19″ LCD Color Monitor Casper 19CSPR 6.3 Key Board 715G2835 1 LED_RED# LED_GRN# LED001 CN001 LBADC1 R002 2K OHM 1/4W LBADC2 DC_POWERON R003 0R05 1/10W 1% LED_GRN# LED_RED# C001 C002 C003 C004 C005 R004 2K OHM 1/4W R005 1K 1/10W 1% NC/0.001uF... -
Page 27: Pcb Layout
19″ LCD Color Monitor Casper 19CSPR 7. PCB Layout 7.1 Main Board 715G2904 1... - Page 28 19″ LCD Color Monitor Casper 19CSPR...
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Page 29: Power Board
19″ LCD Color Monitor Casper 19CSPR 7.2 Power Board 715G2824 2 2... - Page 30 19″ LCD Color Monitor Casper 19CSPR...
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Page 31: Key Board
19″ LCD Color Monitor Casper 19CSPR 7.3 Key Board 715G2835 1... -
Page 32: Maintainability
19″ LCD Color Monitor Casper 19CSPR 8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. 8.2 Trouble Shooting 8.2.1 Main Board No power... - Page 33 19″ LCD Color Monitor Casper 19CSPR No picture (LED orange) No picture X401 oscillate The button if under control Replace X401 waveform is normal Check reset circuit of Check Correspondent U401 is normal component Check C423(+) =1.8V; U404 Vout=3.3V Replace U401...
- Page 34 19″ LCD Color Monitor Casper 19CSPR White screen White screen Measure Q404 base X401 oscillate waveform is normal is low level? Replace X401 Check CN 403 is solder Check reset circuit of and Q405 is OK U401 is normal Check Correspondent Check Correspondent component.
- Page 35 19″ LCD Color Monitor Casper 19CSPR 8.2.2 Power Board No power Check AC line volt 100V or 240V Check AC input Check the voltage of C905 (+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of U901...
- Page 36 19″ LCD Color Monitor Casper 19CSPR No backlight Check C802=16V Check adapter Check ON/OFF signal Check main board Check U801 PIN12=16V Change ON/OFF circuit Check U801 PIN5 have triangle wave Change U801 Check U801 PIN9/PIN10 PWM wave Check U801 Check Q804, Q809 Drain wave...
- Page 37 19″ LCD Color Monitor Casper 19CSPR 8.2.3 Key Board OSD is unstable or not working Connect Key Pad Board Is Key Pad Board connecting normally? Replace Button Switch Is Button Switch normally? Is Key Pad Board Normally? Replace Key Pad Board...
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Page 38: White-Balance, Luminance Adjustment
19″ LCD Color Monitor Casper 19CSPR 9. White-Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. How to do the Chroma-7120 MEM. Channel setting A. Reference to chroma 7120 user guide B. Use “ SC” key and “ NEXT” key to modify x,y,Y value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2. - Page 39 19″ LCD Color Monitor Casper 19CSPR B. Adjust (7300K) color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM .channel to Channel 4 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 302 ±30, y = 318 ±30, Y>180cd/m 4.
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Page 40: Monitor Exploded View
19″ LCD Color Monitor Casper 19CSPR 10. Monitor Exploded View Description B E Z E L (L 1 9 W A -8 Q 5 ) L E N S K E Y P A D K E Y B O A R D... -
Page 41: Bom List
19″ LCD Color Monitor Casper 19CSPR 11. BOM List T98SM5NBX2KPAN Location Part No. Description Remark 040G 58162461A EPA LABEL 050G 600 2 HANDLE1 050G 600 3 HANDLE2 052G 1185 1 BIG TAPE 052G 1186 SMALL TAPE 052G 1207 A CONDUCTIVE TAPE 45mm *25mm *0.08mm... - Page 42 19″ LCD Color Monitor Casper 19CSPR Q55G 100625 TIN STICK_LOW ARGENTUM U401 056G 562557 IC TSUM1PFR-LF U404 056G 563 52 IC AP1117D33L-13 TO252-3L DIODES U102 056G 662 13 IC AZC099-04S SOT23-6L U103 056G 662 13 IC AZC099-04S SOT23-6L U402 056G1133 81(WW7MRT9SKQ1)
- Page 43 19″ LCD Color Monitor Casper 19CSPR R427 061G0402392 RST CHIP 3.9K 1/16W 5% R435 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R440 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R448 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R107 061G0402750 RST CHIPR 75 OHM +-5% 1/16W...
- Page 44 19″ LCD Color Monitor Casper 19CSPR ZD103 093G 39S501 T LUDZS5.6BT1G BY LRC 2nd source ZD104 093G 39S501 T LUDZS5.6BT1G BY LRC 2nd source KEPC7QAK KEY BOARD G2835-1-X-X-1-080110 CN001 033G3802 6H WAFER 6P RIGHT ANGLE PITCH 2.0 SW001 077G 600 1GCJ...
- Page 45 19″ LCD Color Monitor Casper 19CSPR C805 067G215P4714AV CAP 105℃ 470UF M 25V C811 067G215P4714AV CAP 105℃ 470UF M 25V C917 067G215P6814AV CAP 105C 680UF M 25V C918 067G215P6814AV CAP 105C 680UF M 25V C916 067G215S102 3K ED1000UF 16V 2nd source...
- Page 46 19″ LCD Color Monitor Casper 19CSPR Q607 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q806 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q805 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q809 057G 600 55 P5506 HVG SO-8 Q804 057G 600 55 P5506 HVG SO-8 Q808 057G 759 2 RK7002FD5T116 SOT-23 BY ROHM...
- Page 47 19″ LCD Color Monitor Casper 19CSPR R804 061G0805000 RST CHIP MAX 0R05 1/8W R830 061G0805000 RST CHIP MAX 0R05 1/8W R832 061G0805000 RST CHIP MAX 0R05 1/8W RJ610 061G0805000 RST CHIP MAX 0R05 1/8W R608 061G0805000 RST CHIP MAX 0R05 1/8W...
- Page 48 19″ LCD Color Monitor Casper 19CSPR C807 065G0603104 12 CER2 0603 X7R 16V 100N P C814 065G0603104 12 CER2 0603 X7R 16V 100N P C613 065G0603104 12 CER2 0603 X7R 16V 100N P C612 065G0603104 12 CER2 0603 X7R 16V 100N P...
- Page 49 19″ LCD Color Monitor Casper 19CSPR IC904 056G 158 12 KIA431A-AT/P TO-92 IC904 056G 158504AME IC AME431BAJATB25Z AME R903 061G152M10452T RST MOFR 100KOHM +-5% 2WS R914 061G152M39852T RST MOFR 0.39 OHM +-5% 2WS R946 061G152M47152T RST MOFR 470 OHM +-5% 2WS...
- Page 50 19″ LCD Color Monitor Casper 19CSPR 709G2824 QA001 CONSUMPTIVE ASS'Y 095G 90 23 JUMPER WIRE 715G2824 2 2 POWER PCB 160X160X1.6MM FR-1 1OZ 709G2824 QS001 CONSUMPTIVE ASS'Y 052G 2191 A PAPER TAPE Q90G6295 3 HEAT SINK L901 S73L17440VG TRANSFORMER ASS'Y...