LG Electronics T730BH, T730BHKL - 18 -, Figure 1. Cable Connection Figure 1. Cable Connection , - 18 -

1 49

- 18 -- 18 -

220

IBM

Compatible PC

PARALLEL PORT

Power inlet (required)

Power LED

ST Switch

Power Select Switch

(110V/220V)

Control Line

Not used

RS232C

PARALLEL

V-SYNC POWER

VGSMONITOR

V-Sync On/Off Switch

(Switch must be ON.)

4.7K

74LS06

OFF ON

OFF

VIDEO

SIGNAL

GENERATOR

Figure 1. Cable Connection Figure 1. Cable Connection

Contents

Main COLOR MONITOR SERVICE MANUAL MODEL: CONTENTS SPECIFICATIONS SAFETY PRECAUTIONS Leakage Current Hot Check Circuit CAUTION: SERVICING PRECAUTIONS Page Page TIMING CHART * No Composite Mode. Sync Video F DIS A S S E MB LY (b) (c) (a) WIRING DIAGRAM FBT - 9 - BLOCK DIAGRAM 5V 80V 50V 6.3V DESCRIPTION OF BLOCK DIAGRAM . Page 1. Preparation for Service Adjustment ADJUSTMENT PROCEDURE & METHOD 2. Adjustment by Service Hot key How to enter SVC HOT KEY ADJUSTMENT Page Page 3. Adjustment Using Service software Program (Adjustment Program) 4. EDID Data Edit Us ing Serv ice so ftware Program - 18 - Figure 1. Cable Connection Figure 1. Cable Connection - 18 - C B F E TROUBLESHOOTING GUIDE 1. NO POWER Waveforms 2. NO CHARACTER 3. NO RASTER 4. NO VERTICAL DEFLECTION 5. TROUBLE IN DPM Waveforms DPMS TABLE 6. NO DEGAUSSING 7. H_Deflection Failure 8. Invariable H_Size 9. TROUBLE IN H-LINEARITY 10. Abnormal H_Size 11. Side Pin or Trap Failure 12. Para. or Pin Balance Failure 13. Tilt Failure 14. V Size or Pos. Variation Failure 15. High Voltage Failure 16. ABL Failure 17. Focus Failure 18. Micom Failure 19. OSD Failure 20. User Control Failure 21. Missing Color 22. Visible Retrace 23. Purity Failure 24. Misconvergence 25. Poor Focus EXPLODED VIEW B A a b b EXPLODED VIEW PARTS LIST REPLACEMENT PARTS LIST Page Page Page Page REPLACEMENT PARTS LIST Page Page Page Page SCHEMATIC DIAGRAM