Lg-Flatron Monitor Service Manual

Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html

COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-136

MODEL:

(

T730BH(K) (T730BHKL-K***E*)
T730SH(K) (T730SHKL-K***E*)

) **Same model for Service

CAUTION

BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

*Same looking with new chassis.

CONTENTS
SPECIFICATIONS................................................... 2
SAFETY PRECAUTIONS ........................................ 3
SERVICE PRECAUTION.......................................... 4
TIMING CHART ....................................................... 7
WIRING DIAGRAM ................................................. 9
DISASSEMBLY ....................................................... 8
BLOCK DIAGRAM................................................... 10

DESCRIPTION OF BLOCK DIAGRAM................... 11
ADJUSTMENT ....................................................... 13
TROUBLESHOOTING GUIDE .............................. 19
EXPLODED VIEW................................................... 35
REPLACEMENT PARTS LIST ............................... 37
SCHEMATIC DIAGRAM......................................... 47
PRINTED CIRCUIT BOARD................................... 49

SPECIFICATIONS
1. PICTURE TUBE
Size
DefIection Angle
Neck Diameter
Stripe Pitch
Face Treatment
Internal

: 17 inch
: 90¡
: 29.1 mm
: 0.25 mm
: W-ARASC (Anti-Reflection and
Anti-Static Coating)
: Anti-Glare

2. SIGNAL
2-1. Horizontal & Vertical Sync
1) Input Voltage Level : 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

: 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
3 row 15-pin Connector (Attached)
2-4. Scanning Frequency
HorizontalVertical

: 30 ~ 71 kHz
: 50 ~ 160 Hz

3. POWER SUPPLY
3-1. Power Range
AC 100 - 240V~ 50 / 60Hz, 1.0A

3-2. Power Consumption
MODE

POWER CONSUMPTION

LED COLOR

NORMAL (ON)

less than 68 W

BLUE

DPMS OFF

less than 4 W

FLASH

POWER OFF

less than 2 W

OFF

4. DISPLAY AREA
4-1. Active Video Area :
¥ Max Image Size - 325.1 x 243.8 mm (12.80" x 9.60")
¥ PresetImage Size - 310 x 230 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
(Ambient)
5-2. Relative Humidity
: 10%~ 80%
(Non-condensing)
5-3. Altitude
: 5,000 m
6. DIMENSIONS (with TILT/SWIVEL)
Width
: 400 mm (15.75 inch)
Depth
:411 mm (16.18 inch)
Height
: 401 mm (15.79 inch)
7. WEIGHT (with TILT/SWIVEL)
Net Weight
: 15.0 kg (33.52 lbs.)
Gross Weight
: 18.1 kg (39.67 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 isessential 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
from manufacturer or you will void the original parts and
labor guarantee.
CAUTION:

N o modification of any circuit should be
attempted.
Service work should be performedonly after
you are thoroughly familiar with all of the
following safety checks and servicing
guidelines.

SAFETY CHECK
Care should be taken while servicing this color monitor
because of the high voltage used in the deflection circuits.
These voltages are exposed in such areas as the
associated flyback and yoke circuits.
FIRE & SHOCK HAZARD
An isolation transformer must be inserted...