T R O U B L E S H O O T I N G; C I R C U I T B L O C K - Pioneer PL-L1000 Service Manual

PL-L1 ctctcl
9 . T R O U B L E S H O O T I N G
9 . 1 C I R C U I T B L O C K
9 . 1 . 1
No elevator operation
Recheck after cornpletion
of present operation
Auto mode in operation ?
Is pin (15) of IC12 invert-
ed every time the elevator
switch is pressed ?
Defective elevator FF
(rc1,2)
Is there a voltage applied
across the elevation motor
terminals ?
Is there any fault in the
elevator mechanism ?
(Dislodged belt, or poor
gear inter-meshing).
s . 1 . 2
No repeat switch on/off
switching
Return or reoeat mode in
Is pin (1) of IC12 invert-
ed every time the repeat
switch is pressed ?
Defective
(rc12)
Does the LED lamp light
up when pin (16) of IC7
is connected ?