19
02XX: LCB Errors - continued
CODE CLASS DESCRIPTION MACHINE SOLUTION
02C5 C
The frequency error
from frame IR sensor.
C Replace LCB set.
02C6 C
The receiver discon-
nected from control
zone.
C
a. Check the connection of the control zone extension cable from the LCB to
the control zone.
b. Replace the control zone.
02C7 C
The receiver discon-
nected from frame IR
sensor
C
a. Check the connection of the frame IR receiver cable from the LCB to the
frame IR receiver sensor.
b. Replace the frame IR receiver cable.
02CD C DC brake disconnects C
a. Check the power extend wire connection between the brake and LCB for
any damage.
b. Check to see if the LED16 on the LCB is on when the unit is power on.
- If not, replace the LCB.
- If yes, eplace the brake.
024B B
Position sensor is no
response
C
a. Check the connection of the position sensor cable from the LCB to the posi-
tion sensor.
b. Turn off the DC brake by moving the red handle downward. Rotate the stairs
a least 1 complete revolution. Confirm the gap is lower than 3.5mm between
the axle and proximity sensor and does not hit.
c. Check to see if LED D8 on the LCB is flashing when press "Go" and rotate
the stairs.
- If not, treplace the proximity sensor.
- If yes, replace the LCB.
0250 B
The 2nd speed sensor
(near the sproket set)
is no response.
C
a. Check the speed extend wire connection between the brake and LCB for
any damage.
b. Check to see if the LED21 on the LCB is flashing when the unit is workout.
- If not, replace the second speed sensor (near the sproket set).
- If yes, adjust the second speed sensor position and clean the speed sen-
sor of any debris then re-test or replace LCB.
CODE CLASS DESCRIPTION MACHINE SOLUTION
04A0 C
LCB does not have
communication
response from UCB
Communication
Errors
a. Check the connection of the console cable at both ends and perform conti-
nuity test.
b. Replace LCB.
0441 B
When UCB imple-
ments a command,
but the LCB/MCB
cannot execute the
command
Communication
Errors
Enter the Engineer mode disable B Level Error, bypass CLASS A and B error
code.
04XX: Communication Errors
CHAPTER 4: TROUBLESHOOTING
4.3 ERROR CODE LIST - CONTINUED
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