CONTENTS SAFETY PRECAUTIONS SAFETY PRECAUTIONS 1 GENERAL SAFETY INFORMATION 2 SERVICING PRECAUTIONS 3 TECHNICAL INFORMATION 6 GENERAL INFORMATION 7 PIN CONNECTOR 8 CAUTIONS FOR ADJUSTMENT AND REPAIR 8 OPERATION AND ADJUSTMENT 9 ALIGNMENT PROCEDURE 12 TROUBLESHOOTING HINTS 15 BLOCK DIAGRAM 29 SCHEMATIC DIAGRAM 30 EXPLODED VIEW DIAGRAM 36 INFORMATION OF PART DESCRIPTION 37 ELECTRICAL PARTS LIST 38 CAUTION: No modifications of any circuits should be attempted.
GENERAL SAFETY INFORMATION ◆ Terms in the manual CAUTION Statements identify conditions or practices that could result in damage to the equipment or other property. WARNING Statements identify conditions or practices that could result in personal injury or loss of life. ◆ Terms as marked on equipment CAUTION Statements indicate a personal injury hazard not immediately accessible as one reads the marking or a hazard which is properly included on the equipment itself.
◆ Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components are commonly called Electrostatically Sensitive (ES) Devices. The typical examples of ES devices are integrated circuits, some field-effect transistors, and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1.
GENERAL INFORMATION This color monitor automatically scans all horizontal frequencies from 30KHz to 54KHz, and all vertical frequencies from 50Hz to 160Hz. This color monitor supports IBM PC, PC/XT, PC/AT, personal System/2 (PS/2), Apple Macintosh, and compatible users crisp text and vivid color graphics display when using the following graphics adapters : (VGA, 8514/A, Super VGA, VESA and XGA and Apple Macintosh Video Card).
PIN CONNECTOR Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 OPERATION AND ADJUSTMENT Control Panel Signal 1 Red Green Blue GND GND GND - Red GND - Green GND - Blue +5Vdc (optional) GND - H.Sync GND - V.Sync Bi-directional Data (SDA) Horizontal Sync Vertical Sync (VCLK) Data Clock (SCL) 6 10 15 Arrangement of 15-pin D-sub connector • Increase the value of any selected function. • While the OSD screen is off, you can adjust the screen brightness according to each situation.
OSD Functions Hot Key ICON CONTROL BRIGHTNESS PINCUSHION Adjust the left and right margins for more convex or more concave margins. TRAPEZOID Adjust the trapezoid of the screen by moving the lines inward or outward. PIN BALANCE Adjust the side balance when the sides of the screen are bowed towards left or right. POWER LIGHT When there is no OSD, if you press this BRIGHTNESS button, you can adjust the brightness directly.
ALIGNMENT PROCEDURE ◆ Standard Adjustment Conditions ICON CONTROL FUNCTIONS H. CENTER Adjust the position of the display horizontally (left or right) . V. CENTER Adjust the position of the display vertically (up or down). 1. Power source voltage : 100-240Vac 50/60Hz 2. Aging : Take at least 20 minutes warm-up time. 3. Signals Video : Analog 0.
TROUBLESHOOTING HINTS 1. No Character 6. Static Convergence Adjustment (a) Apply a magenta cross hatch pattern on display. (b) Adjust the focus from the best over all focus on the display. Also adjust the brightness to the desired condition. (c) Vertical red and blue lines are converged by varying the angle between the two tabs of the 4-pole magnets. (d) Horizontal red and blue lines are converged by varying the tabs together, keeping the angle between them constant.
2. No Raster 3. A Missing Color No Raster Is CRT heater red-hot? One color is missing Is Heater Voltage (CRT PWA) about 6V? No Yes Trouble in CRT Trouble in power supply circuit Turn the Brightness & Contrast control to set Maximum No Refer to trouble in PSU.
4. Abnormal OSD Font Abnormal OSD Font Is menu key selected? Is OSD Font exist? 5. Horizontal Output Circuit * If menu key selected.
6-2. Vertical 6. Unstable Picture 6-1. Horizontal Unstable picture Unstable picture Is the pulse of pin 1 of the IC501 correct? Yes Trouble in IC501 or its ambient circuit No Is the pulse of pin 34 of the IC201 correct? Is the 14V,-13V line voltage is correct? -10V Check IC501 and its ambient circuit Refer to P. S. U Yes 40V Yes No 50Vp-p Is the pulse of pin 5 of the IC401 correct? Yes Trouble in vertical D.
7. Focus 8. Convergence Monitor remains unfocused Poor convergence Check Focus VR in FBT Is convergence on the center area bad? Yes Adjust static convergence Refer to Adjustment procedure of convergence No Is focus acceptable? Yes OK Is convergence on the fringe area bad? Yes Adjust D.
9. Abnormal Picture * At first, adjust controls in the OSD Menu 9-1. Horizontal Size 9-2. Vertical Size Abnormal V.Size Abnormal H.Size Is the DC level of the base of Q517 changeable? No Is the DC level of IC501 pin 24 changeable ? Yes Check IC501 pin 24 Is changeable the Waveform of IC401 pin 1? No Is changeable the DC level of pin 23 of the IC501? No Yes Yes =1100Vp-p Is the collector pulse of Q505 correct? Yes 80-310Vpp Trouble V.OSC/ Deflection Circuit Refer to V.
11. Power Supply Unit (P.S.U) 10. Side-Pincushion Circuit Pincusion distortion is excessive or barrel Trouble in P.S.U Select the side-pincushion icon in OSD menu, and adjust acceptable position. Yes O.K Is power switch on? No Switch on Yes Is fuse F001 O.K? No Is the pin 24 waveform of IC501 correct? Yes Check the Base waveform of the Q515 Check the power cord outlet and diode D001,D002,D003,D004 Yes Is the IC001 O.
BLOCK DIAGRAM A Is voltage of C136 14Vdc? No Trouble in D133 or horizontal part No Trouble in D134 or vertical part Yes Is voltage of C137 -13Vdc? Yes Is voltage of C135 8Vdc? No Trouble in D132 Yes P.S.U O.
SCHEMATIC DIAGRAM Power & Connection Section(531X-3) 30
Video Section(531X-3) 31
Horizontal Section(531X-3) 32
Power & Connection Section(531B-3) 33
Video Section(531B-3) 34
Horizontal Section(531B-3) 35
EXPLODED VIEW DIAGRAM 36
INFORMATION OF PART DESCRIPTION Important Safety Notice Components identified with the International Symbol have special characteristics important for safety. When replacing any components, use only manufacturer’s specified parts. Abbreviation of Description RESISTOR Description Allowance F ± 1% J ± 5% K ± 10% M ± 20% G ± 2% Example: Fig & Index Part No Description Resistors RD-4Z820J Carbon: 82J RD-4Z201J Carbon1/4W-200J R101 R102 CAPACITOR Description C D F J K P Z Allowance ± 0.25pF ± 0.
ELECTRICAL PARTS LIST The components identified by mark have special characteristics important for safety and x-ray radiation. These should be replaced only with the types specified in the parts list. LOC PART-CODE PART-NAME PART-DESC LOC PART-CODE PART-NAME PART-DESC PCB1 9979800610 PCB MAIN T=1.6*246*247 C206 CCXB1H221K C CERA 50V B 220PF K (TAPPING) PCB2 9979800611 PCB CRT T=1.
LOC PART-CODE C601 CEXF2C479V C602 CMXM2A103J C801 CCXB1H102K C802 CCXB1H102K C803 PART-NAME LOC PART-CODE 160V RSS 4.7MF (8X16) TP D130 DUF4007—- C MYLAR 100V 0.01MF J (TP) D131 D31GF6—— C CERA 50V B 1000PF K (TAPPING) D132 DUG2D——- C CERA 50V B 1000PF K (TAPPING) D133 DUG2D——- CCXB1H102K C CERA 50V B 1000PF K (TAPPING) D134 C804 CCXF1H104Z C CERA 50V F 0.
LOC PART-CODE PART-NAME PART-DESC LOC PART-CODE PART-NAME PART-DESC LOC PART-CODE PART-NAME PART-DESC LOC PART-CODE PART-NAME PART-DESC R222 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R525 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R823 RD-AZ101J- R CARBON FILM 1/6 100 OHM J SG803 DWSP201M— SURGE ABSORBER WSP-201M R223 RD-AZ562J- R CARBON FILM 1/6 5.
DIFFERENT ELECTRICAL PARTS LIST LOC B002 PART-CODE 5PB13890— PART-NAME COIL BEAD BI3890 LOC PART-CODE B002 5MBFD3512R PART-NAME COIL BEAD PART-DESC BFD 3512 R2 B003 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING B003 5MBFS3550R COIL BEAD BFS 3550 R2 B004 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING B004 5MBFS3550R COIL BEAD BFS 3550 R2 C CERA AC 2.5KV 2200PF M AC250V C015 CH1FDF472M C CERA AC 2.5KV 4700PF M AC250V C500 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.
