NEC MultiSync 20WGX2 Series, Руководство по обслуживанию

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11.3 Connection
A
pparatus does n
o
t
W
ork
OK
NG Proceed
“
12.1 HUB isn't recognize" section .
Proceed
" 12.2 Connection apparatus isn't recognize " section .
OK
NG
OK
NG
Failure point
A machine movement program hasn't been installed.
OK
NG
Failure point
The HUB urn-correspondence of connection peripheral.
OK
In the pin of P305 (pin 2,3 or pin 6, 7) which peripheral is
connect with rise_time and fall_time between 500psec to
300nsec?
Proceed " 12.4 Check the USB IC" section
NG
OK
Is it aware of the USB hub in
the host PC ?
Is a host PC aware
of the peripheral which doesn't
work ?
Is the program which is
characteristic of the machine
unnecessary to make
it work ?
Is there a precaution
of " it doesn't sometimes move
via the hub. " in the manual of the
peripheral which
doesn't work ?
Is the pin of P305 (pin 2,3 or
pin 6,7) with peripheral is connect with
rise_time and fall_time large than 500 PS
? (High Speed Mode)