Service manual

9
Arrangement of 15-pin D-sub connector
Pin Signal
1 Red
2 Green
3 Blue
4 GND
5 GND
6 GND - Red
7 GND - Green
8 GND - Blue
9 +5Vdc
10 GND - H.Sync
11 GND - V.Sync
12 Bi-directional Data (SDA)
13 Horizontal Sync
14 Vertical Sync (VCLK)
15 Data Clock (SCL)
1
610
15
PIN CONNECTOR
• The white balance adjustment has been done by a color analyzer in factroy. The adjustment procedure, described in
the service manual is made by a visual check.
• Allow 20 minutes warm-up time for the display before checking or adjusting only electrical specification or
function.
• Reform the leadwire after any repair work.
◆ Caution For Servicing
• In case of servicing or replacing inverter, high voltage sometimes remains in the output of the inverter. Completely
discharge high voltage before servicing or replacing inverter to prevent a shock to the serviceman.
CAUTIONS FOR ADJUSTMENT AND REPAIR
This TFT LCD monitor automatically scans all horizontal frequencies from 30KHz to 80KHz, and all vertical frequencies
from 56Hz to 77Hz(15”- 50KHz to 75KHz). This TFT LCD 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, Super VGA, VESA, XGA, SXGA and Apple Macintosh Video Card). And so, this TFT LCD monitor has a
maximum horizontal resolution of 1280 dots and a maximum vertical resolution of 1024 lines for superior clarity of display.
By accepting analog signal inputs which level is zero to 0.7 Volts. This TFT LCD monitor can display 16.7M colors
depending on the graphics adapter and software being used.
◆ Abbreviations
ADJ Adjustment
AFC Automatic Frequency Control
TFT-LCD Thin Film Transistor Liquid Crystal Diplay
CCFL Cold Cathode Fluorescent Lamp
H.SYNC Horizontal Synchronization
OSC Oscillator
P.S.U Power Supply Unit
PWA Printed Circuit Board Wiring Assembly
R.G.B Red, Green, Blue
V.Sync Vertical Synchronization
ADC Analog Digital Converter
GENERAL INFORMATION