RCA SelectaVision VideoDisc SFT 100 Service Data page 54

Symptom Description
Lose up to one minute of program
when pause function is reset.
Arm skates forward without command.
LED indicator stays in "--" mode.
(Regulated 15V supply checks low)
Loss of color sync (Turntable
speed okay).
Picture smeared and intermittent.
No Color.
No Play. LED display shows "00"
in Load and Unload position (5V
supply to microprocessor okay).
No Servo action, Rapid Access or
Search modes.
System muted — no DAXI or clock
code output from DAXI Buffer.
No sound, no vídeo, LED display
shows "--",
(3)
Corrective Action
Adjust stylus lifter sofenoid. If lifter
is early type (non-adjustable), replace
with stock no. 149003 adjustable type
(elongated hole in one end of
bracket).
Check U3801, 15V Regulator.
Check U3301 Comb Filter operation.
Check U3201 Video FM
Demodulator operation.
Check U3401 Quad OP
amp operation.
Check U502 microprocessor
IC operation.
Check 0506 Stylus Position Detector
ІС operation.
Check U503 DAXI Buffer
IC operation.
Check stylus cartridge.
Reference Data
SPS-3626
Special instructions covering
installation and adjustment, and
included with new part.
CED-1
Service Data
CED-1
Service Data
Training Workshop Manual SFT 1-1
CED-1
Service Data
Training Workshop Manual SFT 1-1
CED-1
Service Data
Training Workshop Manual SFT 1-1
CED-1
Service Data
Training Workshop Manual SFT 1-1
CED-1
Service Data.
Training Workshop Manual SFT 1-1
CED-1
Service Data
Training Workshop Manual SFT 1-1
CED-1
Service Data
Training Workshop Manual SFT 1-1