NEC AS120-1, AS120-BK-1 free download

File name Nec Mitsubishi Color Monitor a120,120-1 Parts & Service.pdf

COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-134 FACTORY MODEL: AS120J MODEL: AS120-1, AS120-BK-1 CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS SPECIFICATIONS ... 2 SAFETY PRECAUTIONS ... 3 TIMING CHART ... 4 OPERATING INSTRUCTIONS ... 5 WIRING DIAGRAM ... 6 BLOCK DIAGRAM ... 7 DESCRIPTION OF BLOCK DIAGRAM... ..8 ADJUSTMENT ... 10 TROUBLESHOOTING GUIDE ... 12 EXPLODED VIEW... 18 REPLACEMENT PARTS LIST ... 20 PIN CONFIGURATION ... 26 SCHEMATIC DIAGRAM ... 29 PRINTED CIRCUIT BOARD... 31 SPECIFICATIONS 1. PICTURE TUBE Size DefIection Angle Neck Diameter Mask Pitch Diagonal Size View Size Face Treatment 3-2. Power Consumption : 21 inch (Flat Slot Mask) : 90° : 29.1 mm : 0.25 mm : 508.0 mm : 406.4 x 304.8 mm : AR-ASC (Anti-Reflective and Anti-Static Coating) MODE MAX STAND-BY SUSPEND DPM OFF Yes No No No POWER CONSUMPTION LED COLOR GREEN AMBER AMBER AMBER less than 110W less than less than less than 8W 8W 3W 2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low= 0.8V, High= 2.1V 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 4. DISPLAY AREA 4-1. Active Video Area : · Max Image Size - 366.0 x 274.5mm (14.40" x 10.80") · Preset Image Size - 350 x 262 mm (13.78" x 10.31") 4-2. Display Color 4-4. Video Bandwidth : Full Colors : 203MHz 4-3. Display Resolution : 1600 Dots x 1200Lines/75Hz : 0 ~ 0.7 Vp-p : 0 Vp-p : 0.467 Vp-p : 0.7 Vp-p : 75 : R, G, B Analog : Refer to the Timing Chart 2-3. Signal Connector 15 Pin D-Sub Connector 2-4. Scanning Frequency Horizontal : 31 ~ 96 kHz Vertical : 55 ~ 160 Hz 3. POWER SUPPLY 3-1. Power Range AC 100~240V, 50/60HZ, 2A 5. ENVIRONMENT 5-1. Operating Temperature: 0°C ~ 40°C (32°F ~ 103°F) (Ambient) 5-2. Relative Humidity : 10% ~ 90% (Non-condensing) 5-3. Altitude : 10,000 ft 6. DIMENSIONS (with TILT/SWIVEL) Width : 498 mm (19.60") Depth : 512 mm (20.18") Height : 510 mm (20.07") 7. WEIGHT (with TILT/SWIVEL) Net Weight : 28 kg (61.74 lbs) Gross Weight : 32 kg (70.56 lbs) -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 preven