Instruction/ maintenance manual of the product MV7500 Compaq
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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.
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.
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 .
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.
- 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.
WIRING DIAGRAM - 6 - P501 P201 P405 P301 P302 P303 P702 P701 T1 P402 P902 S + S Signal Cable AC Socket FBT.
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.
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.
- 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.
- 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.
- 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.
- 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, Q9.
- 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 LIN.
- 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.
- 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 Q.
- 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.
- 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 CI.
- 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.
- 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.
- 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.
- 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.
EXPLODED VIEW - 22 - 8 B A 2 1 4 3 11 11 6 7 5 10 12 13 9.
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 63.
- 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.
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.
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.
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 0RD1.
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.
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.
- 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.
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.
- 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).
An important point after buying a device Compaq MV7500 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Compaq MV7500 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Compaq MV7500 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Compaq MV7500 you will learn all the available features of the product, as well as information on its operation. The information that you get Compaq MV7500 will certainly help you make a decision on the purchase.
If you already are a holder of Compaq MV7500, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Compaq MV7500.
However, one of the most important roles played by the user manual is to help in solving problems with Compaq MV7500. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Compaq MV7500 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
