SERVICE MANUAL COLOR MONITOR (105G7 Series) THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 Mis-convergence: Center: 0.3 mm Max. Corner: 0.4 mm Max. Power Source: Switching Mode Power Supply AC 90-264 VAC 50/60 Hz ENVIRONMENTAL Operating Temperature 0°C to +40°C Storage Temperature -40°C to +60°C Operating Relative Humidity 5% to 95% Non-Condensing Storage Relative Humidity 5% to 95% Non-Condensing Operating Altitude -400 meters to +3000 meters...
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 2. PRECAUTIONS AND NOTICES 2-1 SAFETY PRECAUTIONS 1. Observe all caution and safety related notes located inside the display cabinet. 2. Operation of the display with the cover removed, may cause a serious shock hazard from the display power supply. Work on the display should not be attempted by anyone who is not thoroughly familiar with precautions necessary when working on high voltage equipment.
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 2.3 SERVICE NOTES When replacing parts or circuit boards, clamp the lead wires around terminals before soldering. When replacing a high wattage resistor (more than 1/2W of metal oxide film resistor) in circuit board, keep the resistor about 10mm (1/2 in) away from circuit board. Keep wires away from high voltage or high temperature components.
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 3. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the 9Glr color display. Position the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduit ground.
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 4. ADJUSTMENT 4. 1 ADJUSTMENT CONDITIONS AND PRECAUTIONS Approximately 30 minutes should be allowed for warm up before proceeding. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 4.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 H-SIZE H-CENTER V-SIZE V-CENTER PINCUSHION PARALLELOGRAM PIN-BALANCE TRAPEZOID ABL ADJ ROTATION NO USE CONTRAST BRIGHTNESS R-BIAS G-BIAS R-BIAS R-GAIN G-GAIN B-GAIN 6500 COLOR TEMPERATURE 9300 COLOR TEMPERATURE NO USE H-MOIRE REDUCE V-MOIRE REDUCE MOIRE DISABLE NO USE NO USE NO USE V-LINEARITY V-LINEARITY BALANCE...
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 White Balance adjustment(Bias ,Gain, ABL): A. Bias (Raster luminance and cut off ) adjustment: (a) Set mode 5 800×600 Fh: 53KHz full white pattern. (b) To make the adjustment condition is under the Factory preset window. Same as step 2-C. (c) Warm up more than 20 minutes.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 RELATIVE PLACEMENT OF TYPICAL COMPONENTS Purity Magnets 6-pole Convergence Magnets 4-pole Convergence Magnets Deflection Yoke Convergence adjustment A. Produce a magenta crosshatch on the display. B. Adjust the focus for the best overall focus on the display. Also adjust the brightness to the desired condition. C.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 Pin22 is used for the automatic Beam Limiter input. Pin1, V Fly back, required for OSD synchronization and is also used for vertical blanking of the video outputs. Pin2, V ref Bypass, provides filtering for the internal voltage. Pin3, Vref, sets the internal bias current level for optimum performance. 5.2 DEFLECTION CIRCUIT The deflection circuit is achieved by a high performance and efficient solution IC 401 (TDA4841) for this monitor.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 5.3 TRANSISTOR & DIODE CIRCUIT LOCATION CIRCUIT FUNCTION DESCRIPTION D901 ~ D904 BRIDGE RECTIFIER FOR AC SOURCE D918, D919 RECTIFIER FOR OUTPUT VOLTAGE D921 RECTIFIER FOR OUTPUT VOLTAGE D922 RECTIFIER FOR OUTPUT VOLTAGE D923 RECTIFIER FOR OUTPUT VOLTAGE D925 RECTIFIER FOR B+ OUTPUT VOLTAGE D929 B+ FEED BACK RECTIFIER FROM F.B.T PULSE...
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 TROUBLE SHOOTING CHART 6.1 NO RASTER, CRT RELATIVE CIRCUIT PROBLEMS CHECK MAIN PCB POWER SUPPLY 76V 、14.2V CHECK LOWER POWER CIRCUIT H- SYNC,V-SYNC SIGNAL Q909,Q910 CHECK THE HIGE VOLTAGE OF CRT REFER ITEM S.M.P.S ABOUT 24.5~25.5V CHECK FAILSAFE CKT IC401 PIN2 RELATIVE CKT.
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http://jdwxzlw.5d6d.com/?fromuser=华盛维修 2.ABNORMAL VIDEO LEVEL ON SCREEN CHECK THE VOLTAGE OF IC801 PIN10/18 ABOUT 5V CHECK 5V RELATIVE CIRCUIT CHECK THE SIGNAL INPUT OF R.G.B ABOUT 0.7Vpp CHECK SIGNAL CABLE OR INTERFACE CARD. CHECK IC801 PIN23 CLAMP PULSE CHECK THE IC801 PIN23 RELATIVE CIRCUIT CHECK THE VIDEO OUTPUT OF IC801 PIN19/20/21 ABOUT 3Vpp...
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 6.2 ABNORMAL DISPLAY NO SIGNAL ON SCREEN CHECK VIDEO IC801 VCC ABOUT CHECK THE 5V PIN OF P802 CONNECTOR CHECK THE OUTPUT VOLTAGE OF IC801 PIN19/20/21 ABOUT 3Vpp CHECK THE RELATIVE CIRCUIT OF IC801 PIN23 CIRCUIT CHECK THE VIDEO 80V OF IC802 PIN4 ABOUT 77V CHECK THE 80V RELATIVE CIRCUIT OF SMPS ON MAIN PCB...
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 6.3 NO BLANKING CHECK THE RELATIVE CIRCUIT OF BLANKING CHECK THE RELATIVE CIRCUIT OF R660/C662/D620 AND Q705/IC601 CHECK R879 ON VIDEO PCB, CHECK G1 RELATIVE CIRCUIT ON MAIN PCB 6.4 HOR./OSC/DEF/HV CIRCUIT FAULT NO RASTER (DISCONNECT WITH SIGNAL CABLE) CHECK IC401 PIN10 ABOUT 12V CHECK IC401 PIN10 RELATIVE CIRCUIT...
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 6.5 ABNORMAL HORIZONTAL DEFLECTION 1.ABNORMAL HORIZONTAL WIDTH OF VIDEO READJUST H-WIDTH FUNCTION CHECK THE RELATIVE CIRCUIT OF Q404 Q405 Q406 CHECK THE FBT B+ VOLTAGE ABOUT 85V AT FH=31KHZ CHECK THE RELATIVE CIRCUIT OF SMPS. CHECK THE HV OF CRT ABOUT 23.5KV 2.
http://jdwxzlw.5d6d.com/?fromuser=华盛维修 6.9 POWER SUPPLY TROUBLE SHOOTING CHART BEFORE CHECK SW.REG. PLEASE REFER TO THE POWER SUPPLY BLOCK DIAGRAM POWER SUPPLY OUTPUT: (A) VARIABLE OUTPUT: 80V - 160V (DEPENDING EPENDING UPON H.SYNC FREQUENCY) CONSTANT OUTPUT: 6.3V, 14.2V, -12V, 60V AND 77V BEAD SET ABNORMAL VARIABLE OUTPUT CHECK AC LINE...
6.10 Lead-free product 1. Philips eliminated toxic substances like lead from its displays. Lead-free display helps protect your health and promotes environmentally sound recovery and disposal of waste from electrical and electronic equipment. 2. Philips complies with the European Community stringent RoHS Directive mandating restrictions on hazardous substances in electrical and electronic equipment.