Citizen CTB-150 - Troubleshooting Flowcharts; No Display Troubleshooting

CTB serial bench scale service manual
16
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error
Overload Stops not correct
Load Cell damaged
shipping screws, and verify pan
installation.
Battery will
not
charge
Mains voltage not present or too
low
Charging circuit failure
Battery Failure
Verify the batteries are
rechargeable types.
Check power supply voltage is
correct.
SECTIOIN 13 TROUBLESHOOTING
13 2 no display
START
T10
pin
3
output
5V
CHK T10 and around circuit
Battery
voltage>5
.5
V
Charging the battery
immediately
or replace the battery
CHK
U1
pin
9
High level when power
on
And return to
low level
CHK power
switch
and connector
Replace power switch or
CHK ST and around
circuit
CHK U1 and around circuit
CHK ST
(11.0592MHz)
CHK U1 and around circuit
START
CHK LCD
break?
Replace
LCD