RCA SelectaVision VideoDisc SFT 100 Service Data page 20

CED-1
MECHANICAL ADJUSTMENTS
(continued)
3. Check antenna switch action by placing function lever in
"oft" position and then «n "play" position to be certain anten-
na switch is operating properly (Figs. 3-4 & 2-13).
Antenna Switch 4
Actuating Link "аз
а атава
to
p PUSH ROD ___4
Fig. 3-4. Antenna Push Rod Cap
52 AC Power "ON" Switch Cam Adjust
1. Place function switch lever in "off" position.
2. Loosen allen head set screw (.050") in S2 cam (item 19) and
position cam so that switch S2 is just turned "off" and tighten
set screw, Figs. 3-5 & 2-13.
3. Place function switch lever in "Play" position and check that
Switch S2 is "on".
сь ge,
AC AC
switch ИШИ 4 POWER
54 рих |
52
Fig. 3-5. AC Power Switch Сат
$3 DC Play Switch Cam Adjust
1. Place function switch lever in "Play" position.
2. Loosen allen head set screw (.050") in S3 cam (item 71) and
position cam so that switch S3 is "оп" and tighten set screw,
Figs. 3-6 & 2-13.
3. Place function switch lever in "Load" position, switch S3
should be "off". Place function switch lever in "Play" and
"off" positions - Switch "S3" should be "on".
EE
Fig. 3-6. DC Play Switch Cam
S4 AC Play Switch Cam Adjust
Use same procedure as set forth for 53 DC Play Switch. Figs. 3-5
& 2-13.
Radius Sensor Assembly
When replacing pickup arm assembly. be certain pickup arm is in
it's outermost position and the radius sensor assembly is almost
in the full counterclockwise position, Figs. 3-9 & 2-11.
NOTE: Rotate radius sensor gear full counterclockwise. Just
before meshing radius sensor gear and pickup arm gear
rack rotate radius sensor clockwise about 2 to 3 gear
teeth. DO NOT completely bottom out radius sensor
gear.
PICK-UP ARM
GEAR RACK
Fig. 3-7. Radius Sensor Assembly
Turntable Height Adjust
To check turntable height - remove stylus cartridge from pick-up
arm assembly, insert turntable height gauge (Stock No. 149239).
Place disc in player in "PLAY" mode with AC cord removed from
power source. Hold height gauge in arm assembly firmly - be sure
plunger is free to indicate properly. Fig. 3-8.
CAUTION: Use old disc or reserve one side of test disc for this
procedure. DO NOT use a good disc for this pro-
cedure.
Pin must rest on Disc in "PLAY" mode.
АС cord removed кот power sauce. —e>
Fig. 3-8. Turntable Height Gage
1. If gauge remains on lowest step — Remove yoke assembly
and spindle, raise turntable height by adjusting turntable
height adjust screw clockwise (item 2 Fig. 3-9). Replace spin-
dle and yoke assembly."
2. If gauge moves to highest step — Remove yoke assembly and
spindle, lower turntable height by adjusting turntable height
adjust screw counterclockwise (item 2. Fig. 2-13). Replace
spindle and yoke assembly.
3. Proper turntable height — when gauge is on center step of
height gauge turntable is at correct height.
NOTE: Turntable height adjust 15 a allen head screw ac-
cessible from top with long portion of extra long
(125") allen wrench. DO NOT mar the inside of
turntable spindle during this adjustment.