Mib / Rs232 Troubles; Usb Troubles - Philips Avalon FM20 Service Manual

MIB / RS232
Symptoms
External device not
receiving data
Detailed Protocol
Problem
USB
Symptoms Cause of Failure
None of the The USB port in the monitor is
connected devices are defective.
functioning.
An invalid combination of connected
devices is present, or the connected
devices are defective.
Cause of Failure
The MIB/RS232 port is not configured for
data export.
The wrong data export protocol driver is
configured in the monitor.
The cable between the external device and
the monitor is not connected correctly or
defective.
The external device does not support the
version of the data export protocol used in
the monitor.
A terminal concentrator is used in between
the device and the monitor, and a protocol
with dynamic speed negotiation is used.
The MIB/RS232 board is in the wrong slot
(slot has been changed after software
configuration, or an additional board has
been plugged in).
The MIB/RS232 board, or the connector
board (depending on which RS232 port is
used) is defective.
Failure Isolation and Remedy
Check the configuration of the MIB/RS232
ports in Configuration Mode.
Check the export protocol required by the
attached device, and configure the monitor
accordingly.
Check the cable and replace it if necessary.
Check if the device supports the version of
the data export protocol. Upgrade the
device or the monitor if necessary (if
matching versions exist).
Some terminal concentrators do not
support changing the transmission speed
(baud rate) dynamically. Check if the
connection works without the concentrator.
Verify the correct placement of the I/O
boards.
Check the board and replace it if necessary.
Consult the Data Export Protocol
document.
Failure Isolation and Remedy
Depending on location of USB port, exchange
either side USB connector, standard system
interface board, or advanced system interface board.
Make sure the combination of the connected
devices is valid. Replace the defective devices if
necessary.
8 Troubleshooting
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