Citizen CTB-600 - SECTION 13 TROUBLESHOOTING; 13 3 Cant Charge the Battery; 13 4 Cant Weigh

CTB serial bench scale service manual
17
13 3 Can’t charge the battery
START
Battery bad?
(battery
Replace battery
Fuse open?
Replace the fuse and solve
the problem (like
transformer bad)
Cut the circuit,
then CHK
transformer
output >
10V
Replace
transformer
Open
U5
pin11/12,
CHK BR1
output
>12V
CHK BR and around
circuit
Restore the circuit,
CHK U5 pin2
output>7V
CHK M/B U5 and around
circuit
CHK M/B D1, R7 and around circuit
N
Y