Table of Contents
Advertisement
1. Precaution
To avoid possible damage, electric shocks or exposure to radiation, follow the instructions below with regard to
safety, installation, service and ESD.
1-1 Safety Precautions
1. Make sure all protective devices are properly installed including non-metallic handles and compartment covers
when installing or re-installing the chassis or chassis assemblies.
2. Make sure that no gaps exist between the cabinets for children to insert their fingers in to prevent children from
receiving electric shocks. Gaps mentioned above include ventilation holes of a too great magnitude between
the PDP module and the cabinet mask, and the improper installation of the rear cabinet.
Errors may occur when the resistance is below 1.0MΩ or over 5.2MΩ. In these cases, make sure that the
device is repaired before sending it back to the customer.
4. Check for Electricity Leakage (AC Leakage Test)
Warning: Do not use an insulated transformer for
checking the leakage. Use only those
current leakage testers or mirroring systems
that comply with ANSIC 101.1 and the
Underwriter Laboratory's specifications
(UL1410, 59.7).
4. A high voltage is maintained within the specified limits using safety parts, calibration and tolerances. When
voltage exceeds the specified limits, check each special part.
5. Warning for Engineering Changes:
Never make any changes or additions to the circuit design or the internal part for this product.
Ex: Do not add any audio or video accessory connectors. This might cause physical damage.
Furthermore, any changes or additions to the original design/engineering will invalidate the warranty.
6. Warning - Hot Chassis:
Some TV chassis are directly connected to one end of the AC power cord for electrical reasons.
Without insulated transformers, the product can only be repaired safely when the chassis is connected to the
earthed end of the AC power source.
To make sure the AC power cord is properly connected, follow the instructions below. Use the voltmeter to
measure the voltage between the chassis and the earthed ground. If the measurement is over 1.0V, unplug the
AC power cord and change the polarity before reinserting it. Measure the voltage between the chassis and the
ground again.
Samsung Electronics
LEAKAGE
DEVICE
CURRENT
UNDER
TESTER
TEST
TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC
ADAPTER PLUG
AS REQUIRED)
<Fig. 1-1 AC Leakage Test>
Precaution
(READING
SHOULD NOT BE
ABOVE 0.5mA)
EARTH
GROUND
1-1
Advertisement
Table of Contents
