Printronix PrintCart - Manual (Page 33)

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• For the 120V PrintCart input, there is a 15 ampere main circuit breaker
mounted on the inverter connector panel. It controls all input power to the
PrintCart and when tripped, interrupts both charger power and pass-
through (ATS) power.
• For the 230V PrintCart input, there is no main breaker. There are
separate breakers for the charger and transfer power. The transfer
breaker is 4/6 Amperes and is located to the right of the charger breaker.
In this case, if either breaker trips, the other branch remains powered.
Troubleshooting Guide
Table 3. Troubleshooting Problems
Symptom Possible Cause Corrective Action
Primary Secondary
No AC ouput
regardless of
presence or
absence of AC
input. All indicator lights
are off. Main DC cable is
disconnected from
battery. Connect main DC cable
to battery.
DC power cable is
unpluged from relay
PCBA. Connect DC input to relay
PCBA.
Relay PCBA blad fuses
open. Check and replace the
right most 1A blade fuses
on relay PCBA.
Batteries are completely
discharged or
unserviceable. Charge batteries with an
external battery charger
for 20 minutes. Switch
onboard charger to sleep
mode by depressing the
red square button on the
right side of the charger
This lowers charging rate
to reduce the hazard of
charging unserviceable
batteries.
Reconnect to AC line
power. If a full recharge
solves the problem,
deactivate sleep mode.
Defective relay or display
PCBA. Replace PCBA.