Daewoo L500B Service Manual page 8

u Power IC, Transistor or Devices Removal / Replacement
1. Heat and remove all solders from the device leads.
2. Remove the heatsink mounting screw (if applicable).
3. Carefully remove the device from the circuit board.
4. Insert new device in circuit board.
5. Solder each device lead, and clip off excess lead.
6. Replace heatsink.
u Diode Removal / Replacement
1. Remove defective diode by clipping its leads as close as possible to diode body.
2. Bend the two remaining leads perpendicularly to the circuit board.
3. Observing diode polarity, wrap each lead out of the new diode around the corresponding lead on the
circuit board.
4. Securely crimp each connection and solder it.
5. Inspect the solder joints of the two "original" leads on the circuit board copper side. If they are not
shiny, reheat them and apply additional solder if necessary.
uTECHNICAL INFORMATION
Electrical
Pixel pitch
Horizontal frequency
Vertical frequency
Operating temperature
Operating humidity
Mechanical
Cabinet
Dimension (set with packing)
Weight(net)
Controls
0.3mm X 0.3mm
30KHz to 62KHz (Automatically)
50Hz to 85Hz (Automatically)
10-40°C / 50-104°F
8-80%
Molded Plastic Cabinet with attachable tilt & swivel base
502(H) X 502(W) X 242(D) mm
4.5 Kg
Power Switch
OSD control
7
SERVICING PRECAUTIONS