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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-110
FACTORY MODEL: CQ771G
MODEL: S7500 (PE1165T), S7500 (PE1165),
MV7500 (PE1165U), MV7500 (PE1165),
CV7500 (PE1165U)
*(
) ID LABEL Model No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
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Table of Contents
Related Manuals for Compaq CRT Monitor s7500
Summary of Contents for Compaq CRT Monitor s7500
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Page 1: Color Monitor
Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-110 FACTORY MODEL: CQ771G MODEL: S7500 (PE1165T), S7500 (PE1165), MV7500 (PE1165U), MV7500 (PE1165), CV7500 (PE1165U) ) ID LABEL Model No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............10 TROUBLESHOOTING GUIDE ......12 SAFETY PRECAUTIONS ........3 EXPLODED VIEW........... 22 TIMING CHART ............4 REPLACEMENT PARTS LIST ....... 24 OPERATING INSTRUCTIONS ........ 5 PIN CONFIGURATION........... 29 WIRING DIAGRAM ..........6 PACKING AND ACCESSORIES ......31 BLOCK DIAGRAM ........... -
Page 3: Safety Precautions
SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are important for safety. These parts are marked However, when the high voltage circuitry is operating on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem. -
Page 4: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Sync Total Period Video Active Blanking Time Sync Duration Back Porch Front Porch Mode Resolution Frequency Time (A) Sort Polarity –... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW AC Power Socket Signal Connector Power ON/OFF Button See Front Control Panel Front Control Panel Select Power/LED Launches on-screen displays, selects functions and Controls power to the monitor. adjustments, and exits menus and On-Screen Display. The LED on the power button is illuminated when the power is on. -
Page 6: Wiring Diagram
WIRING DIAGRAM P201 P402 P405 P501 P702 P701 Socket P902 Signal Cable P302 P301 P303 - 6 -... -
Page 7: Block Diagram
BLOCK DIAGRAM Dynamic Focus Static Focus Screen(G2) COIL COIL TILT DEGAUSSING - 7 -... -
Page 8: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 3) The Micom sets operating mode and offers the This is used for suppressing noise of power input line controlled data. (H-size, H-position, V-size, ... etc.) flowing into the monitor and/or some noise generated in 4) The controlled data of each mode is stored in itself. - Page 9 15. H & V Blanking and Brightness Control. 18. Video Pre-Amp Circuit. Blanking circuit eliminates retrace line by supplying This circuit amplifies the analog video signal from 0-0.7V negative pulse to the G1 of the CRT. And Brightness to 0-4V. It is operated by taking the clamp, R, G, B drive circuit is used for control of the screen brightness.
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Page 10: Adjustment
ADJUSTMENT GENERAL INFORMATION 7) Adjust tilt as arrow keys to be the best condition. All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes 8) DIST. ADJ. BALANCE command. several adjustments may be required. 9) Adjust parallelogram as arrow keys to be the best Adjustment should be following procedure and after condition. - Page 11 14) Set Brightness is cut-off(0.06FL) and Contrast to 5. Input EDID Data. 1) Display color 15,0 cross hatch pattern at Mode 8. Max position. 2) EEPROM Write EDID command and confirm 15) Set SUB-CONTRAST Max 127(7F) (decimal) position. “EDID Write OK!!” message of monitor. 16) Set B-DRIVE to 90(5A);...
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Page 12: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE FUSE OK? (F901) CHECK C908 VOLTAGE? TROUBLE IN (AC120V: 160VDC, D900 AC220V: 304VDC) CHECK IC901 PIN 6 TROUBLE IN WAVEFORM (SQUARE WAVE IC901 COMES OUT?) CHECK TROUBLE IN D941, D942, D951, D961, D941, D942, D951,... - Page 13 2. NO CHARACTER NO CHARACTER CHECK TROUBLE IN IC302 P302 5V LINE PIN 9(5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 5, 6, 7? P301 SIGNAL CABLE CHECK TROUBLE IN IC302 PIN 20, 19, 18 ? IC302 CHECK TROUBLE IN IC303 PIN 4 (80V) P303 12V LINE/ PIN 8 (12V) ?
- Page 14 3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK AMBER DPM MODE POWER INDICATOR (NO H and/or V SYNC) GREEN or AMBER? GREEN CHECK TROUBLE IN D712 ANODE D712 (-157V)? CHECK TROUBLE IN G1 VOLTAGE? Q799 (-55V~-150V) CHECK TROUBLE IN CDT HEAT D941, Q942, Q941 VOLTAGE? (6.3V)
- Page 15 4. NO HORIZONTAL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK TROUBLE IN Q706? Q706 CHECK TROUBLE IN B + VOLTAGE 50V LINE (50V)? CHECK T701(FBT) PIN 2 TROUBLE IN (31KHZ 60V, Q719, Q720, D710 69KHZ 140V) ? CHECK TROUBLE IN Q701 COLLECTOR Q701 WAVEFORM?
- Page 16 5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK TROUBLE IN IC401 IC401 (MICOM) PIN 5, 6, 7 ? CHECK TROUBLE IN Q711~Q716? Q711 ~ Q716 CHECK TROUBLE IN L703? L703 Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) 30K ~ 33.9K 34K ~ 38.9K TROUBLE IN 39K ~ 43.9K C722, C723, C726, C729...
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Page 17: No Vertical Deflection
6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 3 R603 15V LINE (15V)? TROUBLE IN CHECK HIGH-VOLTAGE OUT IC601 PIN 7 CIRCUIT(FBT), (40V)? D721, R606 CHECK TROUBLE IN IC701 PIN 12, 13? IC701 TROUBLE IN IC601, V-CIRCUIT - 17 -... - Page 18 7. TROUBLE IN OSD (ENTER BUTTON MUST BE PRESSED.) NO OSD CHECK TROUBLE IN IC301 B + 5V LINE (5V) ? DC 5V CHECK TROUBLE IN IC301 PIN 5, 10 IC601 PIN8 (V-FBP), WAVEFORM? T701 40V LINE (H-FBP) Pin 10 Pin 5 CHECK TROUBLE IN...
- Page 19 8. TROUBLE IN DPM (NO OFF MODE.) OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 31, 32 (H/V INPUT) DPM OFF MODE) SIGNAL? H/V SYNC CHECK TROUBLE IN IC401 PIN 13 X401 WAVEFORM? 24MHz...
- Page 20 9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK TROUBLE IN IC401 PIN 19 IC401 (MICOM) (0V)? CHECK TROUBLE IN Q953 COLLECTOR Q953 VOLTAGE? DC 15V CHECK TROUBLE IN P902 ? P902 CHECK TROUBLE IN RL901? RL901 TROUBLE IN...
- Page 21 10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK TROUBLE IN IC401 PIN21 IC401 ( MI COM) WAVE FORM ? CHECK 15V LINE TROUBLE IN 15V LINE, 6.3V LINE AND 6.3V LINE ? CHECK TROUBLE IN Q503 EMITTER Q501~Q503 VOLTAGE ? TROUBLE IN...
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Page 23: Exploded View Parts List
CDT(CIRC), M41LFQ503X 55QLLD LG-PHILIPS 70KHZ 29.1MM FST MV7500(PE1165U);Equatorial BACK COVER ASSEMBLY, CQ771G C043 TCO99 COMPAQ S7500 (PE1165T) 3809TKC044A 3809TKC044B BACK COVER ASSEMBLY, CQ771G C043 MPR-II COMPAQ S7500(PE1165), CV7500(PE1165U), MV7500(PE1165U, PE1165) TILT SWIVEL ASSEMBLY, CQ771G T062 B054 HF350U 3043TKK093C 339-002K SCREW ASSEMBLY, TAPTITE P TYPE D5.0 L25.0 MSWR/FZMY 6140TC3004A COIL,DEGAUSSING, 1090MM 16.5OHM 0.4MM 110T 17"... -
Page 24: Replacement Parts List
REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2002. 04. 15. DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 25 DATE: 2002. 04. 15. DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION DIODEs C737 0CKZTTA002N 100PF K 2KV R TP5.0 C738 0CKZTTA003D SC SAMWHA 250V 1000F M TAPING D201 0DL305029BA LTL-305DJ-0C2 TP LITEON GREEN/...
- Page 26 KTD1413 BK KEC TO220I S NPN IC304 0IPRPNS005A LM2480NA NATIONAL SEMICONDUCTO Q710 0TR440009CA KSP44 TP SAMSUNG IC401 0IZZTSZ176A SS 42PIN ST COMPAQ 4KEY CA-110 Q711 0TF630000CA IRFS630A BK SAMSUNG 200V 6.5A IC402 0ISG240860A M24C08-BN6 8DIP BK 8K SERIAL I Q712 0TF630000CA IRFS630A BK SAMSUNG 200V 6.5A...
- Page 27 DATE: 2002. 04. 15. DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R306 0RD5601Q609 5.60K 1/4W(3 5% TA52 R432 0RD1000Q609 100 1/4W(3 5% TA52 R307 0RD1004Q609 1M OHM 1/4 W (3.4) 5% TA52 R433 0RD1202Q609...
- Page 28 DATE: 2002. 04. 15. DATE: 2002. 04. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R737 0RN0560H609 0.56 1/2W 5 TA52 R901 0RD4703A609 470K OHM 1/2 W (7.0) 5% TA52 R738 0RN0560H609 0.56 1/2W 5 TA52...
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Page 29: Pin Configuration
PIN CONFIGURATION TDA4866J Current Driven Vertical Deflection Booster SYMBOL OUTB TDA4866J OUTB OUTA V FB GUARD OUTA FEEDB GUARD FEEDB Pin Configuration M24C08 Serial I C BUS EEPROM SYMBOL DESCRIPTION PSDIP8 (BN) 0.25mm Frame E0-E2 Chip Enable Input Serial Data Address Input/Output Serial Clock Write Control SO8 (MN) - Page 30 TDA4857 Autosync Deflection Controller HFLB FOCUS XRAY HSMOD HPLL2 BSENS HCAP HREF BDRV HBUF PGND HPLL1 HDRV SGND TDA4857 XSEL VCAP VREF EWDRV VAGC VOUT2 VSMOD VOUT1 VSYNC HSYNC CLBL HUNLOCK Pin Configuration SYMBOL DESCRIPTION SYMBOL DESCRIPTION Horizontal Flyback Input H-Synchronization Unlock/Protection/V-Blanking Output HFLB HUNLOCK...
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Page 31: Packing And Accessories
PACKING AND ACCESSORIES Model Name: S7500 (PE1165T), S7500 (PE1165), CV7500 (PE1165U) POWER CORD USER MANUAL Model Name: MV7500 (PE1165U), ADAPTER SPEAKER MV7500 (PE1165) SPEAKER KIT MANUAL POWER CORD USER MANUAL - 31 -... -
Page 32: Schematic Diagram
SCHEMATIC DIAGRAM IIC-SDA IIC-SCL DDC-SDA DDC-SCL 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. - 32 - - 33 -... -
Page 33: Printed Circuit Board
PRINTED CIRCUIT BOARD 2. CONTROL BOARD (Solder Side) 1. CONTROL BOARD (Component Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) - 34 - - 35 -... - Page 34 Apr. 2002 P/NO : 3828TSO048C Printed in Korea...