Replacement
CB1 protects the battery packs from overload conditions such as a shorted high-energy capacitor or a short across the capacitor
bus bars. Replace CB1 if it continually trips without identifiable cause, or if it cannot be reset. Follow these steps to replace CB1:
1. Disconnect Workstation power plug from AC outlet.
2. Remove C-Arm's Right Side cover.
3. USING GREAT CARE TO AVOID ELECTRIC SHOCK, disconnect battery cables from P1A and P3B on Capacitor/Power
module. (Refer to Capacitor/Power module replacement procedure in this chapter for details.)
4. Locate two battery cables just above P1A and P3B. These two cables have blue connectors that connect to each other.
USING GREAT CARE TO AVOID ELECTRIC SHOCK, disconnect the cables from each other.
5. USING GREAT CARE TO AVOID ELECTRIC SHOCK, connect a current-limiting resistor (300k or so) across
Capacitor/Power module busbars to discharge high energy capacitors inside Capacitor/Power module. (Refer to
Capacitor/Power module replacement procedure in this chapter for details.)
6. Remove Capacitor/Power module from C-Arm chassis. Follow procedure described under Electrical and Electronic
Assemblies later in this chapter.
7. Remove attaching hardware that secures CB1 to Capacitor/Power module. Retain attaching hardware for reuse.
8. Disconnect and tag wires from CB1.
9. Withdraw CB1 from Capacitor/Power module.
10. Connect wires you removed in step 8 to replacement circuit breaker.
11. Mount replacement circuit breaker in Capacitor/Power module. Secure replacement breaker with attaching hardware you
removed in step 6.
12. Secure Capacitor/Power Module to C-Arm chassis.
13. Reconnect battery cables you detached in steps 3 and 4. Make sure all wiring is correctly routed through cable strapping as
it was prior to disassembly.
14. Connect Workstation power cord to AC outlet.
15. Power up system and check for proper operation.
16. Install all covers before returning C-Arm to service.
21
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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