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Compaq MV7500 manual

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Table of contents for the manual

  • Page 1

    Compaq MV7500 SE R VICE MANUAL Website:http://biz.LGservice.com E-mail:http://www .LGEservice.com/techsup.html Coloreal T M MODEL: S7500 (PE1 165T), S7500 (PE1 165), MV7500 (PE1 165U), MV7500 (PE1 165), CV7500 (PE1 165U) LG: CA- 1 10 LG CQ771G[...]

  • Page 2

    1. PICTURE TUBE Size : 17 inch DefIection Angle : 90° Neck Diameter : 29.1 mm Dot Pitch : 0.28 mm Face Treatment : Anti-Glare Diagonal Inch : 16.06" 2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low=0~1.2V, High=2.5~5.5V 2) Sync Polarity : Positive or Negative 2-2. Video Input Signal 1) Voltage Level : 0 ~ 0.7 Vp-p a)[...]

  • Page 3

    SAFETY-RELATED COMPONENT WARNING! There are special components used in this color monitor which are important for safety. These parts are marked on the schematic diagram and the replacement parts list . It is essential that these critical parts should be replaced with the manufacturer's specified parts to prevent X-radiation, shock, fire, or o[...]

  • Page 4

    TIMING CHART - 4 - VIDEO SYNC C E D F A B H – 37.500 26.667 20.317 6.349 2.032 3.810 0.508 V – 75.000 13.333 12.800 0.533 0.080 0.427 0.027 H – 31.469 31.778 25.422 6.356 3.813 1.907 0.636 V – 59.940 16.683 15.253 1.430 0.064 1.048 0.318 H – 43.269 23.112 17.778 5.334 1.556 2.222 1.556 V – 85.008 11.764 11.093 0.671 0.069 0.579 0.023 H [...]

  • Page 5

    - 5 - OPERA TING INSTRUCTIONS C o l o r e a l T M FRONT VIEW REAR VIEW AC Power Socket Signal Connector See Front Control Panel Front Control Panel 1. Power/LED Controls power to the monitor. The LED on the power button is illuminated when the power is on. 2. Right Adjustment Moves clockwise through menu options or increases adjustment levels. 3. L[...]

  • Page 6

    WIRING DIAGRAM - 6 - P501 P201 P405 P301 P302 P303 P702 P701 T1 P402 P902 S + S Signal Cable AC Socket FBT[...]

  • Page 7

    BLOCK DIAGRAM - 7 - MENU POWER POWER INPUT 100~240VAC (50/60Hz) Line Filter Degaussing Circuit < OSD Control > SMPS TRANS (T901) SMPS CONTROL (IC901) DPM CONTROL CIRCUIT Voltage Regulating Circuit 80V 50V 15V 6.3V TILT Control Circuit 6.3V 15V E 2 PROM (IC402) H POSITION BRIGHTNESS CONTRAST H SIZE V POSITION V SIZE SPCC TRAPEZOID PIN BALANCE [...]

  • Page 8

    DESCRIPTION OF BLOCK DIAGRAM - 8 - 1. Line Filter & Associated Circuit. This is used for suppressing noise of power input line flowing into the monitor and/or some noise generated in this monitor flowing out through the power input line. That is to say, this circuit prevents interference between the monitor and other electric appliances. 2. Deg[...]

  • Page 9

    - 9 - 15. H & V Blanking and Brightness Control. Blanking circuit eliminates retrace line by supplying negative pulse to the G1 of the CRT. And Brightness circuit is used for control of the screen brightness. 16. Image Rotation (Tilt) Circuit. This circuit corrects the tilt of the screen by supplying the image rotation signal to the tilt coil w[...]

  • Page 10

    - 10 - ADJUSTMENT GENERAL INFORMA TION All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several adjustments may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. • Alignment appliances and tools. - IBM compatible PC. - Programmable Signal G[...]

  • Page 11

    - 11 - 14) Set Brightness is cut-off(0.06FL) and Contrast to Max position. 15) Set SUB-CONTRAST Max 127(7F) (decimal) position. 16) Set B-DRIVE to 90(5A); LG CDT at DRIVE of the alignment program. (TECO CDT: B-DRIVE 100(64)) 17-1) Adjust R-DRIVE and G-DRIVE command to white balance x=0.283 ± 0.003 and y=0.298 ± 0.003 at Full- White on the White B[...]

  • Page 12

    - 12 - TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF ) TROUBLE IN D900 TROUBLE IN FUSE (F901) TROUBLE IN IC901 TROUBLE IN D941, D942, D951, D961, D962, D971 TROUBLE IN Q903, Q952, Q951, Q942, Q941 CHECK FUSE OK? CHECK C908 VOLTAGE? (AC120V: 160VDC, AC220V: 304VDC) NO YES YES YES YES NO NO NO CHECK IC901 PIN 6 WAVEFORM (SQUARE WAVE[...]

  • Page 13

    - 13 - 2. NO CHARACTER NO CHARACTER CHECK IC302 PIN 9(5V) ? CHECK IC302 PIN 5, 6, 7? CHECK IC302 PIN 20, 19, 18 ? CHECK IC303 PIN 1, 2, 3 ? CHECK IC303 PIN 4 (80V) PIN 8 (12V) ? TROUBLE IN P302 5V LINE TROUBLE IN PC SIGNAL, P301 SIGNAL CABLE TROUBLE IN IC302 TROUBLE IN P303 12V LINE/ 80V LINE TROUBLE IN IC303 NO YES NO NO YES YES YES YES NO NO CHEC[...]

  • Page 14

    - 14 - 3. NO RASTER NO VIDEO (POWER INDICATOR ON ) CHECK POWER INDICATOR GREEN or AMBER? CHECK D712 ANODE (-157V)? CHECK G1 VOLTAGE? (-55V~-150V) TROUBLE IN D712 TROUBLE IN Q799 DPM MODE (NO H and/or V SYNC) AMBER NO GREEN YES NO CHECK CDT HEAT VOLTAGE? (6.3V) TROUBLE IN D941, Q942, Q941 YES NO TROUBLE IN CDT YES[...]

  • Page 15

    - 15 - 4. NO HORIZONT AL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK Q706? CHECK B + VOLTAGE (50V)? CHECK T701(FBT) PIN 2 (31KHZ 60V, 69KHZ 140V) ? CHECK Q701 COLLECTOR WAVEFORM? TROUBLE IN Q706 TROUBLE IN 50V LINE TROUBLE IN Q719, Q720, D710 TROUBLE IN Q701 TROUBLE IN T701, P701 NO NO YES YES YES YES NO NO 0V T[...]

  • Page 16

    - 16 - 5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK IC401 PIN 5, 6, 7 ? CHECK Q711~Q716? CHECK L703? TROUBLE IN IC401 (MICOM) TROUBLE IN Q711 ~ Q716 TROUBLE IN L703 TROUBLE IN C722, C723, C726, C729 NO NO NO YES YES YES Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) 30K ~ 33.9K 34K ~ 38.9K 39K ~ 43.9K 44K ~ 47.9K 48K ~ 51.9K 52K ~ 57.9K 58K ~ 61.[...]

  • Page 17

    - 17 - 6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK IC601 PIN 3 (15V)? CHECK IC601 PIN 7 (40V)? CHECK IC701 PIN 12, 13? TROUBLE IN R603 15V LINE TROUBLE IN HIGH-VOLTAGE OUT CIRCUIT(FBT), D721, R606 TROUBLE IN IC701 TROUBLE IN IC601, V-CIRCUIT NO NO YES YES YES NO 3V[...]

  • Page 18

    - 18 - 7. TROUBLE IN OSD TROUBLE IN OSD PERIPHERAL CIRCUIT NO OSD TROUBLE IN 5V LINE TROUBLE IN IC601 PIN8 (V-FBP), T701 40V LINE (H-FBP) TROUBLE IN IC302, IC301 TROUBLE IN IC301, IC302 NO YES DC 5V YES YES YES NO NO NO Pin 5 5V Pin 10 5V H+V 5V H+V CHECK IC301 B + (5V) ? CHECK IC301 PIN 12 WAVEFORM ? (ENTER BUTTON MUST BE PRESSED.) CHECK IC301 PIN[...]

  • Page 19

    - 19 - 8. TROUBLE IN DPM CHECK IC401 (MICOM) PIN 31, 32 (H/V INPUT) SIGNAL? CHECK IC401 PIN 13 WAVEFORM? CHECK IC401 (MICOM) PIN 2, 3 ? CHECK B + LINE (6.3V,15V, 80V) ? CHECK PC, (PC IS NOT GOING INTO DPM OFF MODE) TROUBLE IN X401 TROUBLE IN IC401 (MICOM) TROUBLE IN Q941, Q942, Q951, Q952, TROUBLE IN PC OFF MODE FAILURE INPUT H/V SYNC SIGNAL H/V SY[...]

  • Page 20

    - 20 - 9. NO DEGAUSSING CHECK IC401 PIN 19 (0V)? CHECK Q953 COLLECTOR VOLTAGE? CHECK P902 ? CHECK RL901? TROUBLE IN IC401 (MICOM) TROUBLE IN Q953 TROUBLE IN P902 TROUBLE IN RL901 TROUBLE IN TH901, DEGAUSSING COIL NO DEGAUSSING DC 15V NO NO NO NO YES YES YES YES (DEGAUSS ON THE OSD MENU MUST BE PRESSED.)[...]

  • Page 21

    - 21 - 10. NO TIL T (NO ROT A TION ) NO TILT (NO ROTATION) TROUBLE IN IC401 ( MI COM) TROUBLE IN 15V LINE, 6.3V LINE TROUBLE IN Q501~Q503 TROUBLE IN P501, TILT COIL, D521 NO YES YES YES CHECK 15V LINE AND 6.3V LINE ? CHECK Q503 EMITTER VOLTAGE ? NO NO CHECK IC401 PIN21 WAVE FORM ?[...]

  • Page 22

    EXPLODED VIEW - 22 - 8 B A 2 1 4 3 11 11 6 7 5 10 12 13 9[...]

  • Page 23

    EXPLODED VIEW P ARTS LIST Ref. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 A B Part No. 3091TKC078A 3091TKC078B 6318L17006A 6318E17002A 6318E17002B 6318E17002C 6318E17002D 6318E17002E 6318E17002F 6318L17005A 6318L17005B 6318L17005C 6318L17007A 6318L17007B 3809TKC044A 3809TKC044B 3043TKK093C 339-002K 6140TC3004A 6174T11003E 6620TKB002B 6850TA9004C 4950TKS196A[...]

  • Page 24

    - 24 - DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C201 0CN1040K949 0.1M 50V Z F TA52 C301 181-288N MKT 100V 103JTR PHS86103 C302 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C303 0CK1040K945 0.1UF 50V Z F TR C304 181-288N MKT 100V 103JTR PHS86103 C305 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C306 181-288N MKT 100V 103JTR PHS[...]

  • Page 25

    DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C737 0CKZTTA002N 100PF K 2KV R TP5.0 C738 0CKZTTA003D SC SAMWHA 250V 1000F M TAPING C739 0CE226CK638 22UF SHL,SD 50V M FM5 TP 5 C740 0CE227EL630 220UF KMG 63V M FM5 BULK C741 0CZZTFT002B ECQV1H154JZ3 154J 50V TP5.0 MA C742 0CZZTFT001R ECQB1H223JM3 223J 50V TP5.0 MA C743 0CK331[...]

  • Page 26

    DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D962 0DRGS00090A 31GF6L-5701 GENERAL SEMICONDUC D971 0DR100009DA RGP10J TP GULF SEMICONDUCTOR L ZD201 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 500MW ZD202 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 500MW ZD203 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 500MW ZD301 0DZ560009AG GDZJ5.6B TP GRAN[...]

  • Page 27

    DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R306 0RD5601Q609 5.60K 1/4W(3 5% TA52 R307 0RD1004Q609 1M OHM 1/4 W (3.4) 5% TA52 R310 0RD1002Q609 10K 1/4W(3 5% TA52 R311 0RD1502Q609 15K 1/4W(3 5% TA52 R312 0RD1001Q609 1K 1/4W(3 5% TA52 R314 0RD1000Q609 100 1/4W(3 5% TA52 R315 0RD1000Q609 100 1/4W(3 5% TA52 R316 0RD1000Q609[...]

  • Page 28

    DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R737 0RN0560H609 0.56 1/2W 5 TA52 R738 0RN0560H609 0.56 1/2W 5 TA52 R740 0RD0271A609 2.7 OHM 1/2 W (7.0) 5% TA52 R741 0RD1000Q609 100 1/4W(3 5% TA52 R742 0RD4702Q609 47K 1/4W(3 5% TA52 R743 0RD2701Q509 2.7K OHM 1/4 W(3.4) 2% TA52 R744 0RX3900J609 390 OHM 1 W 5% TA52 R745 0RD47[...]

  • Page 29

    PIN CONFIGURA TION - 29 - TDA4866J Current Driven V ertical Deflection Booster SYMBOL INA INB V P OUTB GND OUTA V FB GUARD FEEDB PIN 1 2 3 4 5 6 7 8 9 TDA4866J 1 INA 2 INB 5 GND 6 OUTA 8 GUARD 9 FEEDB 7 V FB 4 OUTB 3 Vp TDA4866J Pin Configuration 1 9 Vin 4 1 2 5 3 ST ART O.V .P LATCH DRIVE Vth1 Vth2 O.S.C ERROR AMP GND O.C.P/F .B S D + + + REG. STR[...]

  • Page 30

    - 30 - TDA4857 TDA4857 Autosync Deflection Controller TDA4857 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 23 22 25 24 21 20 19 18 17 32 31 30 29 28 27 26 VREF VAGC SGND VCAP VSMOD i.c SDA SCL HUNLOCK FOCUS HSMOD HPLL2 HCAP HREF HBUF HPLL1 EWDRV VOUT2 XSEL VCC VOUT1 VSYNC HSYNC CLBL PGND HFLB XRAY BOP BSENS BIN BDRV HDRV SYMBOL HFLB XRAY BOP BSENS BIN BD[...]

  • Page 31

    IIC-SDA IIC-SCL DDC-SDA DDC-SCL - 32 - - 33 - SCHEMA TIC DIAGRAM NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are sucject to be changed for improvement without notice.[...]

  • Page 32

    - 34 - - 35 - PRINTED CIRCUIT BOARD 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) 1. CONTROL BOARD (Component Side) 2. CONTROL BOARD (Solder Side)[...]