This article is from the RCA SelectaVision VideoDisc FAQ, by firstname.lastname@example.org (Tom Howe) with numerous contributions by others.
With many CED players it is possible to add these connections, in fact,
you may come across a CED player with auxiliary connectors already
installed. But before installing these, note the following warning from
RCA's service literature:
"DESIGN ALTERATION WARNING-- Do not alter or add to the mechanical or
electrical design of this VideoDisc Player. Design alterations and
additions, including, but not limited to, circuit modifications and the
addition of items such as auxiliary audio and/or video output
connections, cables, and accessories etc. might alter the safety
characteristics of this VideoDisc Player and create a hazard to the
user. Any design alterations or additions may void the manufacturer's
warranty and may make you, the servicer responsible for personal injury
or property damage resulting therefrom."
With the above disclaimer noted, it is still possible for a
knowledgeable electronics technician in possession of the player's
service manual to perform a safe installation.
A/V output jacks can be added to the RCA SFT100, SGT075, SGT100, SGT101,
SJT090, SJT100, SJT101, SKT090, SKT100, and Zenith VP2000, which, if well
shielded, will markedly improve the quality of the audio and video sent
to the television monitor itself equipped with separate A/V input jacks.
All other CED player models came from the manufacturer with separate A/V
jacks already installed. RCA provided audio and composite video test
points on the signal processing board to which a set of external A/V
jacks can be connected with a length of shielded wire. The audio and
composite video test points are, respectively, TP3601 and TP3409 on the
F, G, and Zenith players, and TP3504 and TP3410 on the J and K players.
On the actual circuit boards inside the players, these test points are
labeled TP601, TP409, TP04, and TP10, since it is standard practice to
drop identical leading digits when labeling a related section of circuit