Table Of Contents - NEC AS120-1 Service Manual

SPECIFICATIONS ................................................... 2
SAFETY PRECAUTIONS ........................................ 3
TIMING CHART ....................................................... 4
OPERATING INSTRUCTIONS ................................ 5
WIRING DIAGRAM ................................................. 6
BLOCK DIAGRAM ................................................... 7
DESCRIPTION OF BLOCK DIAGRAM................... ..8
1. PICTURE TUBE
Size
DefIection Angle
Neck Diameter
Mask Pitch
Diagonal Size
View Size
Face Treatment
2. SIGNAL
2-1. Horizontal & Vertical Sync
1) Input Voltage Level : Low= ≤0.8V, High= ≥2.1V
2) Sync Polarity
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
2-3. Signal Connector
15 Pin D-Sub Connector
2-4. Scanning Frequency
Horizontal
Vertical
3. POWER SUPPLY
3-1. Power Range
AC 100~240V, 50/60HZ, 2A
SPECIFICATIONS
: 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)
: Positive or Negative
: 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
: 31 ~ 96 kHz
: 55 ~ 160 Hz
CONTENTS
ADJUSTMENT ...................................................... 10
TROUBLESHOOTING GUIDE .............................. 12
EXPLODED VIEW.................................................. 18
REPLACEMENT PARTS LIST .............................. 20
PIN CONFIGURATION .......................................... 26
SCHEMATIC DIAGRAM ......................................... 29
PRINTED CIRCUIT BOARD................................... 31
3-2. Power Consumption
MODE
MAX
STAND-BY
SUSPEND
DPM OFF
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
4-3. Display Resolution : 1600 Dots x 1200Lines/75Hz
4-4. Video Bandwidth
5. ENVIRONMENT
5-1. Operating Temperature: 0°C ~ 40°C (32°F ~ 103°F)
5-2. Relative Humidity
5-3. Altitude
6. DIMENSIONS (with TILT/SWIVEL)
Width
Depth
Height
7. WEIGHT (with TILT/SWIVEL)
Net Weight
Gross Weight
- 2 -
POWER CONSUMPTION
Yes less than 110W
No less than 8W
less than 8W
No
less than 3W
No
: Full Colors
: 203MHz
(Ambient)
: 10% ~ 90%
(Non-condensing)
: 10,000 ft
: 498 mm (19.60")
: 512 mm (20.18")
: 510 mm (20.07")
: 28 kg (61.74 lbs)
: 32 kg (70.56 lbs)
LED COLOR
GREEN
AMBER
AMBER
AMBER