84 Zebra ZXP Series 3 Card Printer Service Manual P1061317-002 
3: Theory of Operation
Block Diagram
3.5 Block Diagram
Most of the circuitry in the Printer is on the Main PCBA. Since the Main Controller PCBA is 
not a serviceable unit, circuit analysis to the component level is pointless.
Below is a block diagram of the functional circuits of the ZXP Series 3 Card Printer; the block 
diagram also shows how signals are passed to and from the Main Controller PCBA to the rest 
of the Printer.