iPECS iPECS-MG - 6 Troubleshooting

iPECS-MG Quick Start Guide
41
6
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
Problem
Cause/Symptom
Solution
System power failure
AC Power Fail
Check the AC Power source.
Check the Inlet fuse and PSU Fuse.
Check LD21 and LD22 on MB/MBE.
Replace the PSU with a good one.
+5V, +30V Fail
Check MPB board was installed and
Verify which board has a short circuit by
extraction the board one by one.
LD4 LED OFF on the MPB
Check DC Output status on MB.
System does not operate
Power short circuit in some board(s)
Check the connection of each board with
the MPB. Check the PSU.
Check a short circuit on the MPB or other
boards.
Press the Reset button when the DIP
switch (SW1 for database protection) is in
the default position.
Bad board connection
System database not working
MPB Operation
Check MPB status.
DKT does not operate
Bad DTIB circuit
Exchange the malfunctioning board by
one in good working condition.
Bad connection between the DSIU
/DTIB12/DTIB24/DTIB12C/DTIB24C and
DKT Terminals
Check the connection between the SLT
and DKT line
on MDF, and fix any
mismatching.
Repair any broken connection between
the Board and DKTs.
Installation Distance of DKT and System
Check the Max. distance between the
DSIU/DTIB12/DTIB24/DTIB12C/DTIB24C
and the DKT.
Bad DKT
Plug the DKT into another extension port
that has been verified as working. If the
DKT still does not work properly, replace
the DKT.
SLT does not operate
Bad DSIU/SLIB12/SLIB24/SLIB12C
/SLIB24C
Exchange the board by one in good
working condition.
Bad connection between the
DSIU/SLIB12/SLIB24/SLIB12C/SLIB24C
and SLT
Check that the board connection between
the lines of the SLT and DKT on the
MDF, and fix any mismatching.
CO line operation failure
CID/Tone Detection Fail
Check the U12/U63 (Voice processing
and Tone detection device).
Bad connection
Check all connections.
Expansion KSU does not
operate
Power ON sequence
Turn on the Basic KSU after turning on
the Expansion KSU. Then press the
Reset button.
Expansion cable connection
Check Expansion cable to verify the
connection and its working condition.
2’nd KSU, 3’rd KSU PSU OFF
Check 1’st KSU was Power OFF.
Noise on External MOH
and Paging port
Induced noise on the wire between the
System and the amplifier
Make sure a shielded cable is in use as
the connection wire between the system
and the amplifier.
Excessive input level from the external
music source
Decrease the output level of the external
music source by using the volume control
on the music source.