YASKAWA DX200 Maintenance Manual page 195

Screen status of 7SEG
programming LED for
pendant robot I/F
circuit
board
(YIF)
Lights
OFF
The screen does
not become bright
and nothing is
displayed.
'P'
13 Trouble Shooting When Alarm is not Displayed
The data of robot controller is stored in the CF card of YCP21 circuit board and the
memory of I/F circuit board(YIF).
Assumed status
The control power is
not provided from the
YPS power supply unit.
The YPS power supply
unit is out of order.
The programming
pendant is out of order
or malfunctions.
13-2
Cause Remedy
Power When the green LED of YPS power
supply supply unit SOURCE is OFF, check the
failure followings
-For the primary power supply voltage,
make sure that the voltage is not
dropped and there is no open phase.
-Make sure that the breaker is not
tripped.
-Make sure that the fuses of the YPS
power ON unit (1FU,2FU) are not melt.
When the fuse is melt, replace after
checking the cause. (refer to *6)
-Check whether the control power supply
is not turned OFF by the external
REMOTE signal.
-Make sure that the following connectors
are connected properly and there is no
wiring error (disconnection).
(1)YPU-CN601, CN603, CN610, CN612
(2) YPS-CN151
Cable -When the green LED of the YPS power
failure supply unit SOURCE is ON, make sure
that the following connectors are
connected properly and there is no wiring
error (disconnection).
(1)YPS-CN152, CN154, CN158
(2)YRK-CN5
(3)YSF22-CN213, CN218
-Make sure that the red LED (5V) in the
YPS power supply unit is OFF. When it is
ON, make sure that there is no wiring
error (ground fault or shortcircuit
because of the wire damage) for the
following connectors.
(1)YPS-CN158
(2)YRK-CN5
YPS unit Check that all the red LEDs
failure [+5V][+24V][FAN][OHT] of YPS power
supply unit are OFF. If these LEDs are
OFF, replace the YPS unit. (refer to *3)
Programming -Turn the power OFF then back ON.
pendant -If the error occurs again, replace the
failure programming pendant.