Owner's Manual

-2-2-
1.
USB
operation
connection
USB connection to PC
PC detects USB?
Set's L463 both terminal
voltage
is 5V?
JK461 check.
B to B connector connection
or PCB Pattern check.
IC401 defective.
JK461 defective.
PN401 or CN401
soldering
defective of PCB
pattern
defective.
CN401, CN402, PN401,
PN402
repair.
C402 one terminal
voltage
is 5V?
F/W
update
is successful?
OK
C419
+voltage
is 3V C422
+voltage
is 1.5V?
Resistance between JK461
#5 and JK461 Frame is
less than 10Ω?
JK461 #2 and CN401
#3,
JK461
#3 and CN401 #4 are connected
properly
each other?
Is there cold solder or short in
CN401, CN402, PN401,
PN402?
IC401 or IC462 defective
soldering
or defective
parts
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO NO
NO
NO
NO
NO
NO