EXES-5000 SYSTEM CHECK FLOW CHART
START
+24V ... +24 - +30V
+18V ... +17.5 ~ +18.5V
+12V ... +11.5 - +12.5V
+ 5V ... +4.9 - +5.IV
Table 1:
Fig. 1
Fig. 2
ON
OFF
ON
OFF
DIP switch on CPU
correctly set ?
Set DIP switch
according to Inst.
Back-up battery on
CPU connected ?
Plug the Jack into
Pin A.
Program switch on
CPU off ?
Program switch off
Power switch on
Proper voltages at
each output power
terminal? (tabl 1)
Disconnect DC power
connection and check
If +24V or +18V is not
in the range, check
power supply (DS-510).
If +12V or +5V is not
in the range, replace
DC/DC inverter.
No.15 of SCN SELECT on
OCU lit brighter than
others ?
Replace CPU—OCU
CLOCK lamp on HCU lit
blightly ?
Replace HCU
Other lamps on HCU off ?
Replace HCU—OCU-CPU
Station No. lamp on LMU
lit corresponding to
station connected ?
Check wiring to the
station—-Replace the
station—>LMU
Clear all No.200
programmings
Dial
at any M-station
One of LINK BUSY lamps on
HCU lit brightly ?
Replace Station—HCU—OCU—CPU
Turn on LINK SELECT switch(es) on HCU to make
the total number of marked number to be the
number of LINK BUSY lamp lit. The station
dialled correspond to ADDRESS-T lamp.
Replace HCU—OCU—CPU
O
n dialling
heard ?
dial tone
Dial
SIG. CORD lamps
on HCU lit as Fig. 1
momentary
Replace HCU—OCU—CPU
Replace SGD—HCU— Station
Call from any station
to any station
In other links, dial
tone and lamps OK ?
C
alling station and called
station correspond to lamps
lit on ADDRESS T and R
SIG.CORD lamp lit as Fig.2
Replace Station—CPU—HCU
Replace CLU or DLU
Calling tone heard ?
Replace SGD — Station
wiring
Two way conversation OK ?
In other links ?
Replace Station-CLU or DLU
All other links OK ?
Replace CLU or DLU
concerned
Conversation possible
with all station ?
Program No.200 functions
END
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