Commodore 1515 Technical Manual page 38

2. No initialization
START
H solenoid
moves?
YES
Carrier unit
returns to
home position?
YES
Clutch moving
spring OK?
YES
NO
Lubricate
and adjust
position of it.
NO
Gaps between
home sensor u.
and carrier u.
abnormal?
NO
Contact between
connector and
LED or PH wire
of home sense
defective?
(wrong position)
NO
Zero volts
at LED line?
Repain PCB unit
36
YES
Replace feed drum
unit, head rope (L)
unit and rope stopper,
and lubricate.
Replace or reset it.
NO
Lubricate
guide pillar.
YES
Replace it.
YES
Adjust them.
YES
Clean them or reset
to correct position.
YES
>--
Repair PCB unit
YES
Replace it.