Zenith H19F34DT Series, Service Manual

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SR25-3828VD0171B
1-2
CL - OVERVIEW
OVERVIEW (continued)
INTERFACES
CAMPORT
Some models have video and right/left audio input jacks
at the front of the receiver. These jacks can be used to
view videotapes from a VCR or Camcorder. When the
video cable is plugged into the jack, the shorting
jumper J1 opens, placing a high at pin 10 of the IC6000
microprocessor. This switches the TV into the auxiliary
mode. As long as the cables are attached, the TV set
will be locked in auxiliary mode. Use of a remote control
or buttons on the front of the set will not permit
switching into tuner mode until the video cable is
disconnected.
SUPERPORT - MPI
Zenith Commercial Product receivers are now being
adapted to interact with other equipment. Prime
examples of this can be found in Lodging and Health
Care situations where the set is controlled from the
main office.
All this is made possible by the new technology that is
being built into these receivers. The SuperPort and
Multiple Protocol Interface (MPI) jack and associated
circuitry allow remote control of the set.
MULTIPLE PROTOCOL INTERFACE
Television functions and features are controlled by the
communication of commands and status information
through a SuperPort by the MPI interface.
EBC (EDGE BOARD CONNECTOR)
Allows easy access for removing/installing accessory
modules providing a rail mounted slide-through card.
These cards might contain one of the above features.
CONNECTION CENTER ON BACK OF TV
The connection on the back of the TV contains the
input and output interfaces.