Refer to the circuit of Figure 4-38. Assume that the devices are CMOS. Also assume that the logic probe indication at Z2-3 is “indeterminate” rather than “pulsing.” List the possible faults, and write a procedure to follow to determine the actual fault.

Figure 4-38

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A B 3 Z1 4 1 2 Note: Vcc and ground connections to each IC are not shown Z2 X Pin Condition Z1-3 HIGH Z1-4 LOW Z2-1 LOW Z2-2 Pulsing Z2-3 Pulsing