Service manual

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17” LCD Color Monitor AOC 177Pk

Service

Horizontal Frequency

30-83 kHz

TABLE OF CONTENTS

Description Page Description Page

SAFETY NOTICE

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.

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.General Instructions………..........................…...........6

3.2.Control Button…………….…..............……...............6

3.3.Adjusting the Picture...........................…............7

4.Input/Output Specification............……………............9

4.1.Input Signal Connector............………….................9

4.2 Power Supply Requirement…………………………10

4.3.Factory Preset Display Modes.........................10

4.4.Panel Specification.....……...……………..................11

5.Block Diagram………...................…………................13

5.1.Software Flow Chart………………………...........13

5.2.Electrical Block Dia

ram…………………..…...........15

6.Schematic…………………...................................…17

6.1.Main Board.................................................17

6.2. Audio Board.....………..…....................................22

6.3. Power Board....…..….….......................................23

7.PCB Layout..……………….......................................25

7.1.Main Board……………........................................25

7.2.Power Board…............................................27

7.3.Audio Board…............................................29

7.4.Key Board…………...…….....................................29

8.Maintainability…………….........................................30

8.1.Equipments and Tools Requirement...............30

8.2.Trouble Shooting…………..............................31

9.White-Balance Luminance adjustment………….....37

10.Monitor Exploded View……………………….........39

11.BOM List….....................................................42

12.Different Parts List……………………………………54

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Summary of content (54 pages)

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7” LCD Color Monitor AOC 177Pk Service Service Service Horizontal Frequency 30-83 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents.......……..............................…........1 6.Schematic…………………...................................…17 Revision List.…........................................……......2 6.1.Main Board.................................................17 Important Safety Notice.…….........................……......3 6.2. Audio Board.....………..….................
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17” LCD Color Monitor AOC 177Pk Revision List Revision Date Revision History TPV Model A00 Jun.-18-07 First Version Release T76CRTDBF1ACA A01 Dec.
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17” LCD Color Monitor AOC 177Pk 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. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
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17” LCD Color Monitor AOC 177Pk 1. Monitor Specifications Items Descriptions Driving system TFT Color LCD Type CLAA170EA07 Size 43.2cm 17" Pixel pitch 0.264mm( H )x 0.264mm( V ) Viewable angle 160˚ (H) 160˚ (V) (CR≥10) Response time (type) 5 ms for CPT LCD Panel R,G,B Analog Interface Video Digital Interface 15-pin D-Sub Connector DVI 24pin Analog:0.7Vp-p(standard), Input 75 OHM, Positive and TMDS Video Signal Digital signal Sync.
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17” LCD Color Monitor AOC 177Pk 2. LCD Monitor Description The LCD MONITOR will contain a main board, an audio 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. Monitor Block Diagram Flat Panel and CCFL Drive.
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17” LCD Color Monitor AOC 177Pk 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The 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 the monitor, the power indicator will light up. 3.
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17” LCD Color Monitor 3.3 Adjusting the Picture AOC 177Pk OSD functions Main Main Menu Item Menu Icon Sub Menu Item Sub Menu Description Icon Contrast Contrast from Digital-register. Brightness Backlight Adjustment Focus Adjust Picture Phase to reduce Horizontal-Line noise Clock Adjust picture Clock to reduce Vertical-Line noise. H. Position Adjust the horizontal position of the picture. V. Position Adjust the vertical position of the picture.
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17” LCD Color Monitor AOC 177Pk Analog N/A Select input signal from analog source (D-Sub) Digital N/A Select input signal from digital source (DVI) Input Select OSD Setup H. Position Adjust the horizontal position of the OSD. V. Position Adjust the vertical position of the OSD. OSD Timeout Adjust the OSD timeout. Language Language N/A Information Information N/A Yes N/A No N/A Do not execute reset, return to main menu. N/A N/A Exit OSD Select the language you like.
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17” LCD Color Monitor AOC 177Pk 4. Input/Output Specification 4.1 Input Signal Connector 1. D-SUB connector Pin No. Description Pin No. Description 1. Red 9. + 5V 2. Green 10. Detect Cable 3. Blue 11. Ground 4. Ground 12. DDC-Serial Data 5. DDC-Return 13. H-Sync 6. R-Ground 14. V-Sync 7. G-Ground 15. DDC-Serial Clock 8. B-Ground VGA connector layout 2. DVI-D connector Pin No. Description Pin No. Description 1. TMDS data 2－ 13. TMDS data 3＋ 2. TMDS data 2＋ 14.
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17” LCD Color Monitor 4.2 Power Supply Requirement AOC 177Pk A/C Line voltage range : 100 V ~ 240 V A/C Line frequency range : 50 ± 3Hz, 60 ± 3Hz Current : TBD Peak surge current : < 55A peak at 240 VAC and cold starting Leakage current : < 3.5mA : No advance effects (no loss of information or defect) with a Power line surge maximum of 1 half-wave missing per second DC output Voltage : 12VDC ± 5％ Current (max) : 3.5 Amp (12V) 4.3.
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17” LCD Color Monitor 4.4 Panel Specification AOC 177Pk CLAA170EA07P2 is 17.0” color TFT-LCD (Thin Film Transistor Liquid Crystal Display) module composed of LCD panel, driver ICs, control circuit and backlight. By applying 8 bit digital data, 1280×1024, 16.7M-color images are displayed on the 17.0” diagonal screen. Input power voltage is 5.0V for LCD driving. Inverter for backlight is not included in this module. General specification are summarized in the following table: 4.4.
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17” LCD Color Monitor AOC 177Pk 4.4.3 Electrical Characteristics 1. TFT LCD Module 2.
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17” LCD Color Monitor AOC 177Pk 5. Block Diagram 5.
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17” LCD Color Monitor AOC 177Pk 1) MCU initialize. 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.
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17” LCD Color Monitor 5.2 Electrical Block Diagram AOC 177Pk 5.2.
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17” LCD Color Monitor AOC 177Pk 5.2.
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” LCD Color Monitor AOC 177Pk 6. Schematic 6.
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17” LCD Color Monitor AOC 177Pk 18
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17” LCD Color Monitor AOC 177Pk 19
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17" LCD Color Monitor AOC 177Pk 20
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17" LCD Color Monitor AOC 177Pk 21
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17" LCD Color Monitor 6.2 Audio Board AOC 177Pk 715G1841-2 OUT_L +12V 12V CN202 13 11 9 7 5 3 1 CN204 VOLUME +12V GND + C209 + C210 10uF/50V10uF/50V C213 0.1uF 15 + VS SVR VOLUME STBY VAROUT_R MUTE VAROUT_L 10 470uF/16V C207 7 5 R202 + C208 470uF/16V GND GND Title Size A Date: 22 470uF/16V 14 + 16 VS OUTR R207 R208 1/16W C212 0.01uF INR 17 1K R211 1/16W C211 0.01uF 11 12 20K GND 1/16W R210 6 OUTL 1/16W 220K 9 INL 1K PHONEJACK C206 0.
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17" LCD Color Monitor 6.3 Power Board AOC 177Pk 715G1823-2 R951 47Ω 1/4W R952 47Ω 1/4W 0.001uF/500V C920 3 R909 100KΩ 2W 4 3 0.1uF C912 C916 0.1uF 5 7 6 4 11 10 22uF/50V C911 + 6 1 D901 UF4003PT 8 7 6 5 3 L R931 10KΩ 1/4W ZD920 PTZ9.1B L922 +5V C926 1000uF/16V + C932 470uF/16V + C927 470uF/16V 47Ω 1/4W R954 C921 0.001uF/500V R955 47Ω 1/4W CONNECTOR Q900 FQPF8N60C R915 10KΩ 1/8W C900 0.0022UF 0.47uF R913 1KΩ 1/8W R916 0.
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17" LCD Color Monitor AOC 177Pk CN801 PT801 7 POWER X'FMR 6 2 1 3 4 +12V R802 300KΩ 1/4W R804 10KΩ 1/4W R805 470Ω 1/4W R818 15Ω 1/4W + R819 15Ω 1/4W 1 Q802 PMBS3904 R803 2 Q801 PMBS3904 C813 0.0015uF/50V 0.0015uF/50V R821 C830 47pF C836 C818 270pF 560Ω 1/8W 0Ω 1/4W D803 2 1 6 7 R825 3 1 Q805 AM9945N-T1-PF G S C831 270pF R827 3.6KΩ 1/8W 4 3 2 5 D D 8 D D G S CONN BAV99 R822 3MΩ 1/2W R820 15KΩ 1/8W D801 2 CN802 100KΩ 1/8W ZD801 RLZ5.
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17" LCD Color Monitor AOC 177Pk 7. PCB Layout 7.
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17" LCD Color Monitor AOC 177Pk 26
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17" LCD Color Monitor AOC 177Pk 7.
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17" LCD Color Monitor AOC 177Pk 28
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17" LCD Color Monitor 7.2 Audio Board AOC 177Pk 715G1841-2 7.
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17" LCD Color Monitor AOC 177Pk 8. Maintainability 8.1 Equipments and Tools Requirement 1. Voltmeter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an IBM Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual.
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17" LCD Color Monitor 8.2 Trouble Shooting AOC 177Pk 8.2.
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17" LCD Color Monitor AOC 177Pk No picture (LED orange) No picture The button if under control OK Measure U101 PIN2=3V NG Check U101 OK X301 oscillate waveform is normal NG Replace X301 OK Check HS/VS from CN702 is normal NG Check Correspondent component OK Replace U402 NG Replace U402 OK Replace U401 32
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17" LCD Color Monitor AOC 177Pk White screen White screen NG Measure Q102 base X301 oscillate waveform is normal is high level? NG OK Replace X301 OK Check Q101, Q102, Q103 are Check reset circuit of broken or CN504 solder? U402 is normal NG NG Check Correspondent component. OK OK Check Correspondent component.
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17" LCD Color Monitor AOC 177Pk 8.2.
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17" LCD Color Monitor AOC 177Pk 2.
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17" LCD Color Monitor AOC 177Pk 8.2.
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17" LCD Color Monitor AOC 177Pk 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 XyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2. Setting the color temp. you want A. MEM.CHANNEL 3 (Warm color): 6500 color temp.
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17" LCD Color Monitor AOC 177Pk B. Adjust Cool 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 = 296 ±20, y = 311 ±20, Y =180 cd/m2 4. Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100 6.
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17" LCD Color Monitor AOC 177Pk 10.
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17" LCD Color Monitor AOC 177Pk 40
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17" LCD Color Monitor AOC 177Pk 41
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17" LCD Color Monitor AOC 177Pk 11. BOM List T76CRTDBF1ACA Location Part No. 015G5786 1 019G6034 1 Description VRSA BRACKET GP STOPPER PIN 040G 581 26704 SHIPPING LABEL 040G 581689 4A SERIAL LABEL FOR MONITOR 041G 68508 A CONTROL CARD 044G3231 5 EVA WASHER 044G6002834 2A GP PAPER BOARD 044G9003210 CORNER PAPER 044GH600 1 HANDLE 2 050G 600 4 HANDLE 1 052G SMALL TAPE 1186 078G 322 1A KL SPK 8OHM 1.5W KUAIDA 078G 322 1A KR SPK 8OHM 1.
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17" LCD Color Monitor AOC 177Pk Q33G0099 GM 1L LOCK HOLDER Q33G4998 GM 1L VESA COVER Q33G4999 GM 1L HINGE COVER Q33G5001 GM 1L LIFT COVER Q33G5003 GM 1L STOP MYLON Q33G5004 GM 1X LIFT BKT COVER Q33G5005 GM 1X SPRING HOLDER Q34G0099 GM 1B STAND Q34G0115 GM 1B 20 BASE 750GLC70A7P13N PANEL CLAA170EA07P 000 FZ CPT AUPC780KK6AP AUDIO BOARD 033G802414C H 2*7PIN DUAL ROW RIGHT ANGLE H U201 056G 616 1 IC E-TDA7496L ST C202 067G215V471 3N GP KY16VB470M-CC3 10*12.
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17" LCD Color Monitor AOC 177Pk C424 067G305V101 3 105 摄氏度 100UF M 16V C425 067G305V101 3 105 摄氏度 100UF M 16V C426 067G305V101 3 105 摄氏度 100UF M 16V C504 067G305V101 3 105 摄氏度 100UF M 16V C104 067G305V101 3 105 摄氏度 100UF M 16V CN702 088G 35315F H D-SUB 15PIN CN701 088G 35424F N DVI 24PIN CONN F X301 093G 22 45 J 24MHZ/30PF/49US U401-1 056G 562533 IC RTD2525L-LF U101 056G 563 25 IC A1C1084-33PETR-R AIC U402 056G1125701 X(LA6RWR7CAQ2) IC MCU RTD2120L-LF REALTEK U702 056G113
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17" LCD Color Monitor AOC 177Pk R518 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R434 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R433 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R727 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R726 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R725 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R724 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R723 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R722 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R721 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R720 06
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17" LCD Color Monitor AOC 177Pk R522 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R521 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R520 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R511 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R508 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R506 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R342 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R317 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R302 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R301 061G0603472 RST CHIPR 4.
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17" LCD Color Monitor AOC 177Pk C501 065G0603105 12 CHIP 1UF 16VX7R 0603 C705 065G0603150 31 CHIP 15PF 50V NPO C708 065G0603150 31 CHIP 15PF 50V NPO C712 065G0603150 31 CHIP 15PF 50V NPO C715 065G0603151 31 CHIP CAP 150PF 50V NPO C716 065G0603151 31 CHIP CAP 150PF 50V NPO C718 065G0603151 31 CHIP CAP 150PF 50V NPO C719 065G0603151 31 CHIP CAP 150PF 50V NPO C704 065G0603473 32 CHIP 0.047UF 50V X7R C706 065G0603473 32 CHIP 0.047UF 50V X7R C709 065G0603473 32 CHIP 0.
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17" LCD Color Monitor AOC 177Pk D704 093G 6433P BAV99 D706 093G 6433P BAV99 D714 093G 6433P BAV99 D715 093G 6433P BAV99 D716 093G 6433P BAV99 D717 093G 6433P BAV99 D718 093G 6433P BAV99 D101 093G1004 3 SS14 715G2264 1 MAIN BAORD PCB KEPC6QC6 KEYG1819-1-2-X-3-061213 CN003 033G3802 2H WAFER 2P RIGHT ANGLE CN004 033G3802 2H WAFER 2P RIGHT ANGLE CN001 033G8027 12 WAFER 2*6P 2.
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17" LCD Color Monitor AOC 177Pk R916 061G152M438 64 RST MOFR 0.43OHM +-5% 2WS C909 063G107K474 US 0.
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17" LCD Color Monitor AOC 177Pk Q805 057G 763 14 AM9945N Q806 057G 763 14 AM9945N R837 061G0805100 10 OHM 1/10W R842 061G0805100 10 OHM 1/10W R911 061G0805100 3F RST CHIPR 100KOHM +-1% 1/8W R831 061G0805100 3F RST CHIPR 100KOHM +-1% 1/8W R821 061G0805100 3F RST CHIPR 100KOHM +-1% 1/8W R927 061G0805101 RST CHIPR 100 OHM +-5% 1/8W R930 061G0805101 RST CHIPR 100 OHM +-5% 1/8W R836 061G0805102 RST CHIPR 1KOHM +-5% 1/8W R843 061G0805102 RST CHIPR 1KOHM +-5% 1/8W R913 061G08051
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17" LCD Color Monitor AOC 177Pk R912 061G1206100 RST CHIP 10R 1/4W 5% R804 061G1206103 RST CHIPR 10 KOHM +-5% 1/4W R905 061G1206103 RST CHIPR 10 KOHM +-5% 1/4W R931 061G1206103 RST CHIPR 10 KOHM +-5% 1/4W R818 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R819 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R828 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R829 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R807 061G1206220 RST CHIPR 22 OHM +-5% 1/4W R802 061G1206304 300 KOHM 1/8W R902 061G1206334 RST C
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17" LCD Color Monitor AOC 177Pk C808 065G0805682 32 MLCC 0805 CAP 6800PF K 50V X7R D801 093G 64 42 PP BAV70 SOT-23 D803 093G 64 42 PP BAV70 SOT-23 D916 093G 6432S IN4148W D915 093G 6432S IN4148W D910 093G 6432S IN4148W D802 093G 6433P BAV99 D804 093G 6433P BAV99 ZD801 093G 39S 24 T RLZ 5.6B LLDS ZD920 093G 39S 38 T PTZ 9.1B ZD921 093G 39S 40 T RLZ 13B LLDS CN901 006G 31500 EYELET Q900 006G 31502 1.5MM RIVET T901 006G 31502 1.5MM RIVET L901 006G 31502 1.
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17" LCD Color Monitor AOC 177Pk Q34G1841 YDA1B 30 BEZEL(17") Q40G 17N61554A RATING LABEL Q40G 58161547A AOC LOGO LABEL Q40G 58161552A POP LABEL Q44G7039 1 EPS(L) Q44G7039 2 EPS(R) Q44G7039615 1B CARTON Q44G7039BRO 1 PAPER-BLOCKED Q45G 88500 70 PE BAG FOR PALLET Q45G 88609 82 EPE BAG FOR BASE Q45G 88609 89 EPE BAG FOR MONITOR Q52G AOC MIDDLE TAPE 1185 65 Q52G6025 13 1 MYLAR Q52G6025 13147 INSULATE SHEET Q85G 740 1 1 SHIELD S89G179T30N559 LVDS ASS'Y 089F80001703AG 1.
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17" LCD Color Monitor AOC 177Pk 12. Different Parts List Diversity of T76CRTDBF1A2E compared with T76CRTDBF1ACA Location Part No.