Safety Parts Information; Prevention Of Electrostatic Discharge (Esd) To Electrostatically Sensitive (Es) Devices - Panasonic SA-VK460GS Service Manual

SA-VK460GC / SA-VK460GS / SA-VK460GCS / SA-VK460GCT
Note :
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.6.

Safety Parts Information

Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
be replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without
permission of manufacturer.
Table 1
Reference No.
360
S5950
L5950
T5950
T5951
Z5950
RL5950
F1
F1
F2
FP5100
FP5950
JK5950
A2
A2
A2
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as
aluminium foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder remover device. Some solder removal devices not classified as "anti-static (ESD protected)" can
generate electrical charge to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to
damage an ES device).
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should
Part No.
RAE2023Z-S
K0AABLB000003
ELF15N035AN
G4CYBYY00013
G4C2AAJ00005
ERZV10V511CS
K6B1AEA00015
K5D122BLA014
K5D252BLA013
K5D122BLA014
K5G401A00008
K5G402A00025
K2AA2B000011
K2CQ2CA00007
K2CT3CA00004
K2CP2YY00001
Part name & Description
TRAVERSE UNIT
SW VOLTAGE SELECTOR
LINE FILTER
MAIN TRANSFORMER
SUB TRANSFORMER
ZENER
POWER RELAY
FUSE
FUSE
FUSE
FUSE PROTECTOR
FUSE PROTECTOR
AC INLET
AC CORD
AC CORD
AC CORD
8
Remarks
GS/GCS/GCT
GC
GS/GCS/GCT
GS/GCS/GCT
GC/GCS/GS
GS
GCT