Door (Opening & Closing) Is Out Of Order - Sony UP-980 Service Manual

5-9. DOOR (OPENING & CLOSING) IS OUT OF ORDER
START
UP.980(UC)
UP-980CE(CE)
Is signal
input to pin 65 of IC201 on
MA-91 board?
NO
YES
NO
Does door motor operate?
YES
Are signals
from sensor available at
pins 17 and 19 of CN204
NO
The front panel or pin 17 of
CN207 on MA-91 board is
defective.
Pins 99 and 100 of 1C505, or
IC403 and Q404 line on
MA-91 board are defective.
PH402 and PH401 on SE-442
board, and the SE-441 board
line are defective.
1C-405 to pins 84 and 85 of
IC505 on MA-91 board are
defective.
5-9