Variable Voltage Isolation Transformer; Special Note; Model No. Identification Mark - Panasonic PV-D4735S Service Manual

4.15. VARIABLE VOLTAGE
ISOLATION TRANSFORMER
An Isolation Transformer should always be used during the
servicing of DVD VCR whose chassis is not isolated from the
AC power line. Use a transformer of adequate power rating as
this protects the technician from accidents resulting in personal
injury from electrical shocks. It will also protect DVD VCR from
being damaged by accidental shorting that may occur during
servicing.
Also, when troubleshooting the above type of Power Supply
Circuit, a variable isolation transformer is required in order to
increase the input voltage slowly.

4.16. SPECIAL NOTE

All integrated circuits and many other semiconductor devices
are electrostatically sensitive and therefore require the special
handling techniques
"ELECTROSTATICALLY SENSITIVE (ES) DEVICES" section
of this service manual.
4.17. MODEL NO. IDENTIFICATION
MARK
Use Marks shown in the chart below to distinguish the different
models included in this Service Manual.
Note:
Refer to Item 3 of Schematic Diagram Notes of Schematic
Diagram Notes, for mark "PT."
described under the
17
PV-D4735S / PV-D4745 / PV-D4745S / PV-D4745S-K