Reparacion

COLOR MONITOR SERVICE MANUAL
CHASSIS NO. : CA-131 FACTORY MODEL: AS700K

MODEL: AS700
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MENU

SELECT

CONTENTS
SPECIFICATIONS ................................................... 2 SAFETY PRECAUTIONS ........................................ 3 TIMING CHART....................................................... 4 OPERATING INSTRUCTIONS ................................ 5 WIRING DIAGRAM ................................................. 6 DISASSEMBLY ....................................................... 7 BLOCK DIAGRAM ................................................... 8 DESCRIPTION OF BLOCK DIAGRAM................... ..9 ADJUSTMENT ....................................................... 11TROUBLESHOOTING GUIDE .............................. 13 EXPLODED VIEW................................................... 23 REPLACEMENT PARTS LIST ............................... 25 PIN CONFIGURATION........................................... 30 SCHEMATIC DIAGRAM ......................................... 32 PRINTED CIRCUIT BOARD................................... 34

SPECIFICATIONS
1. PICTURE TUBE SizeDefIection Angle Neck Diameter Dot Pitch Face Treatment Low Radiation 3-2. Power Consumption : 17 inch : 90° : 29.1 mm : 0.27 mm : W-ARASC (Anti-Reflection and Anti-Static Coating) : MPR II
MODE MAX NORMAL (ON) STAND-BY SUSPEND OFF POWER CONSUMPTION LED COLOR GREEN GREEN AMBER

85 W 73 W less than 15 W less than 15 W less than 5W

2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input VoltageLevel : Low=0~1.2V, High=2.5~5.5V 2) Sync Polarity : Positive or Negative 2-2. Video Input Signal 1) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 2) Input Impedance 3) Video Color 4) Signal Format

AMBER

: 0 ~ 0.7 Vp-p : 0 Vp-p : 0.467 Vp-p : 0.7 Vp-p : 75 Ω : R, G, B Analog : Refer to the Timing Chart

4. DISPLAY AREA 4-1. Active Video Area : • Max Image Size - 326.7 x 245.5 mm(12.86" x 9.67") • Preset Image Size - 310 x 232 mm (12.20" x 9.06") 4-2. Display Color : Full Colors 4-3. Display Resolution : 1280 x 1024 / 60Hz(Max) (Non-Interlace) 4-4. Video Bandwidth : 110 MHz 5. ENVIRONMENT 5-1. Operating Temperature: 0°C ~ 40°C 5-2. Operating Humidity : 10%~ 90% 5-3. Altitude : 5,000 m 6. DIMENSIONS (with TILT/SWIVEL) Width : 400.0 mm (15.74 inch) Depth : 420.0 mm (16.53inch) Height : 395.0 mm (15.55 inch) 7. WEIGHT (with TILT/SWIVEL) Net Weight : 14.1 kg (31.15 lbs.) Gross Weight : 17.0 kg (36.60 lbs.)

2-3. Signal Connector 3 row 15-pin Connector (Attached) 2-4. Scanning Frequency Horizontal Vertical

: 30 ~ 71 kHz : 55 ~ 120 Hz

3. POWER SUPPLY 3-1. Power Range AC 100-240V~ 50/60Hz, 2A Max.

-2-

SAFETY PRECAUTIONS
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. It is essential that these critical parts should be replaced with the manufacturer's specified parts to prevent X-radiation, shock, fire, or other hazards. Do not modify the original design without obtaining written permission frommanufacturer or you will void the original parts and labor guarantee. CAUTION: No modification of any circuit should be attempted. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. X-RADIATION The only potential source of X-radiation is the picture tube. However, when the high voltage circuitry is operatingproperly there is no possibility of an X-radiation problem. The basic precaution which must be exercised is keep the high voltage at the factory recommended level; the normal high voltage is about 25.8kV. The following steps describe how to measure the high voltage and how to prevent Xradiation. Note : It is important to use an accurate high voltage meter calibrated periodically. • To measure the...