akira CT-21CDP5CP, Service Manual

Page: 5 / 54

Model no.: .CT-21CDP5CP.doc
version 1.0
5
SAFETY PRECAUTION
WARNING :
REFER SERVICING TO
QUALIFIED SERVICE
PERSONNEL ONLY
.
1.
The TV has a nominal working EHT voltage. Extreme caution should be exercised when
working on the TV with the back removed.
a. Do not attempt to service this TV if you are not conversant with the precautions
and procedures for working on high voltage equipment.
b. When handling or working on the CRT, always discharge the anode to the TV
chassis before removing the anode cap in case of electric shock.
c. The CRT, if broken, will violently expel glass fragments. Use shatterproof
goggles and take extreme care while handling.
d. Do not hold the CRT by the neck as this is a very dangerous practice.
2.
It is essential that to maintain the safety of the customer all power cord forms be replaced
exactly as supplied from factory.
3.
Voltage exists between the hot and cold ground when the TV is in operation. Install a
suitable isolating transformer of beyond rated overall power when servicing or connecting
any test equipment for the sake of safety.
4.
When replacing ICs, use specific tools or a static-proof electric iron with small power (below
35W).
5.
Do not use a magnetized screwdriver when tightening or loosing the deflection yoke
assembly to avoid electronic gun magnetized and decrement in convergence of the CRT.
6.
When remounting the TV chassis, ensure that all guard devices, such as nonmetal control
buttons, switch, insulating sleeve, shielding cover, isolating resistors and capacitors,
are installed on the original place.
7.
Replace blown fuses within the TV with the fuse specified in the parts list. 8. When
replacing wires or components to terminals or tags, wind the leads around the terminal
before soldering. When replacing safety components identified by the international
hazard symbols on the circuit diagram and parts list, it must be the company-approved
type and must be mounted as the original.
8.
Keep wires away from high temperature components.