Troubleshooting; System Diagnostics - Sony SX-M700 Service Manual

4-1. SYSTEM DIAGNOSTICS

If a trouble occurs while setting up the system, the cause
can be approximately determined from the pattern of
blinking LEDs on the delegate and chairman units (D/CU).
LED Blinking Pattern
Message LED Blinking Pattern
WARNING 1
(Blink 3 seconds)
250 ms
ERROR 1
(Blinks repeatedly)
ERROR 2
(Blinks repeatedly)
ERROR 3
(Blinks repeatedly)
ERROR 4
(Blinks repeatedly)
SX-M700
SECTION 4

TROUBLESHOOTING

Cause of Error
If the control unit type (built-in simultaneous translation function) and
the D/C unit (delegate and chairman unit) type are different, the
different D/C units blink three seconds after the main power is turned
on.
When the main power was turned on, the self-check detected that
the D/C units could not establish communication. (The ICs in charge
of communication cannot 'synchronize with the time-shared' data, or
cannot receive the identification address.)
When the main power was turned on, the self-check detected that
the D/C units could not establish communication. (The micro
processor is not receiving the self-check data.)
When the main power was turned on, the self-check detected that
the D/C units could not establish communication. (The micro
processor is not receiving the self-check data.)
Communication has aborted without establishing communication
while in normal communication mode.
4-1(E)