Panasonic KX-W50TH Service Manual page 30

Power supply problem
Is
Battery or
AC Adaptor
okay?
YES
the power
switch operational?
YES
Are
all power
voltages okay?
YES
• Check the main board power
lines
NO
NO
NO
-50-
• Primary power circuit opens
• Check the power switch
NO
• Check the power circuit
Does LCD
indicate
" ** MACHINE
LOCKED"?
YES
• Check the connector
(CN106}
• Check the carriage
drive system
• Check the carriage
motor
• Check the mechanism
• Check the CPU
periphery
• Check the LCD circuit
• Check the LCD
connector (CN108)
• Check the CPU
periphery
NO
Initial operation problem
NO
YES
YES
• Check the timing belt
• Check the carriage drive
system
• Check the CPU periphery
Re-check
YES
)= KX-W50TH
]= KX-W60TH
-5 1 -
NO
Does
the carriage stop
at the home
position?
NO
• Check the home
sensor
• Check the connector
(CN104)
• Check the CPU
periphery
Does the
LCD indicate
(" * *
KX-WS0TH")
[" * *
KX-W60TH"]?
YES
NO
• Check the LCD circuit
• Check the LCD
connector (CN108)
• Check the CPU
periphe ry
YES