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ORDER NO. MTNC020827A1
B1
Service Manual Color Television
ied Simplified Manual
plif (NA7D)
Sim Panasonic
Models Chassis
CT-2022HBF AP395
CT-2022HBCF AP395
This simplified service manual is issued to add the models of the NA7D family listed above to main manual order No.
MTNC010734C1 (CT-2022HE). Included in this simplified service manual are unique characteristics and a complete
parts list. Please file and use together with the main service manual order No. MTNC010734C1 (CT-2022HE) and
related manuals.
"WARNING! This service manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this service manual by anyone else could result in serious injury or death."
The service technician is required to read and follow the "Safety Precautions" and "Important Safety Notice" in this Manual.
Copyright 2002 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
Important safety notice
Special components are used in this television set which are important for safety. These parts are identified on the
schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that
these critical parts are replaced with the manufacturer's specified replacement part to prevent X-ray radiation,
shock, fire or other hazards. Do not modify the original design without the manufacturer's permission.
Safety precautions
General guidelines antenna terminals, control shafts, etc. If the exposed
An isolation transformer should always be used metallic part has a return path to the chassis, the
during the servicing of a Receiver whose chassis is not reading should be between 240k and 5.2M. If the
isolated from AC power line. Use a transformer of exposed metallic part does not have a return path to
adequate power rating as this protects the technician the chassis, the reading should be infinite.
from accidents resulting in personal injury from Leakage current hot check (Fig. 1)
electrical shocks. It will also protect the Receiver from Plug the AC cord directly into the AC outlet. Do not use
being damaged by accidental shorting that may occur an isolation transformer during the check.
during servicing. Connect a 1.5k 10 watt resistor in parallel with a
When servicing, observe the original lead dress, 0.15