Adepia TGL 2020A Service Manual
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20” LCD Color Monitor Adepia TGL 2020A 40 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 “NEX
20” LCD Color Monitor Adepia TGL 2020A 20 5.2.2 Power Board DIM DIM EMI filter Start Circuit: R904,R932,R933 PWM Control IC Transformer AC input 12V ON/OFF Control PWM Control IC Feedback Circuit Output Circuit Transformer MOSFET Over Voltage Lamp ON/OFF Over Voltage Protect
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 18 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Save the power key status into EPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light. 12) Check the analog port, are th
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 47 C404 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C405 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C406 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C407 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C409 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C410 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C411 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C412 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C413 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C414 065G0402104 1
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 39 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Is Button Switch normally? Replace Button Switch Y N N Is Key Pad Board normally? Replace Key Pad Board Y N Y Check Main Board
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 36 White Screen White screen Measure Q706 base is Low level? X401 oscillate waveform is normal Check Q707,Q706,Q705 are broken or CN101 solder? Check Correspondent component. Replace PANEL Check Correspondent component. Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset circuit of U401 is normal
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 6 3. Operating Instructions 3.1 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. • The power cord should be connected. • Connect the video cable from the monitor to the video card. • Press the power button to turn on th
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 44 R467 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R466 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R465 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R464 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R463 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R462 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R411 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R418 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R420 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R427 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R428 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R429 061G0402101 RST CH
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 17 5. Block Diagram 5.1 Software Flowing Chart 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
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 51 R102 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R104 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R105 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R103 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R820 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R835 061G0603105 RST CHIPR 1 MOHM +-5% 1/10W R862 061G0603105 RST CHIPR 1 MOHM +-5% 1/10W R861 061G0603220 3F RST CHIPR 220KOHM +-1% 1/10W R930 061G06
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 34 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 No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U704
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 53 C105 065G0603474 12 MLCC 0603 0.47UF K 16V X7R C106 065G0603474 12 MLCC 0603 0.47UF K 16V X7R C107 065G0603474 12 MLCC 0603 0.47UF K 16V X7R C838 065G0805102 31 1000PF 50V NPO C839 065G0805102 31 1000PF 50V NPO C840 065G0805102 31 1000PF 50V NPO C841 065G0805102 31 1000PF 50V NPO C928 065G0805102 32 CHIP 1000P 50VX7R 0805 C932 065G0805102 32 CHIP 1000P 50VX7R 0805 C805 065G0805104 32 CHIP 0.1U 50V X7R C824 065G0805104 32 CHIP 0.1U 50V X7R C916 065G0805104 32 CHIP 0.1
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 49 CN803 033G8021 2E F WAFER CN804 033G8021 2E F WAFER 040G 45762412B CBPC LABEL IC903 056G 139 3A IC PC123Y22FZ0F U101 056G 616 37 IC TPA6021A4NE4 2W*2 PDIP-20 NR901 061G 58080 WT 8 OHM NCT R908 061G152M104 64 100KOHM 5% 2W C903 063G 10747410V 0.47UF 275VAC ARCO C801 065G 3J1006ET 10PF,J,3KV,SL C811 065G 3J1006ET 10PF,J,3KV,SL C901 065G306M1022BM Y1.CAP.001UF 250VAC MURATA C902 065G
Adepia TGL 2020A, 20” LCD Color Monitor Adepia TGL 2020A 14 4.4 Panel Specification CLAA201WA04 is 20.1”(51.11cm) color TFT-LCD (Thin Film Transistor Liquid Crystal Display)module composed of LCD panel, LVDS driver ICs, control circuit and backlight(CCFL, 4 tubes). By applying 8 bit digital data (6bits+Hi-FRC), 1680×1050, drived by 5 voltages,16.7M-color images are displayed on the 20.1” diagonal screen. The module structure is fixed by iron frame,without the inverter for the backlight. Interface of data and control signals is typ. 4.4.1 General Features
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