ZOLL Base Powercharger 4x4, Service Manual

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FUNCTIONAL DESCRIPTION
IV-15
I/O Signal Summary
Pin No. I/O Signal Name Definition Comments
5 I/O B1 + Battery Charge Pin
1 I B1 SENS + Battery Sense Battery #1 detection signal.
9 I/O B1 - Battery Return
6 I/O B2 + Battery Charge Pin
2 I B2 SENS + Battery Sense Battery #2 detection signal.
10 I/O B2 - Battery Return
7 I/O B3 + Battery Charge Pin
3 I B3 SENS + Battery Sense Battery #3 detection signal.
11 I/O B3 - Battery Return
8 I/O B4 + Battery Charge Pin
4 I B4 SENS + Battery Sense Battery #4 detection signal.
12 I/O B4 - Battery Return
Diagnostics
The following sections describe several types of diagnostics that will be performed by the
system to insure product safety and simplify assembly and test requirements.
Power Up
As AC power is applied, the controller will perform a series of internal tests to determine if
the electronics are functional. The following tests are performed ;
•
Timer Accuracy. Verify that the internal clock/timing function has not shifted
fundamental frequency.
•
Memory Validity. Verify that all of the embedded processor's internal memory
locations (RAM and ROM) are functional.
•
Power Supply Accuracy. Verify that the logic power supply is within tolerance
•
LED Test. Turn the four LED's on for a short period.
If any of the first three functional tests fail, the controller will revert to the Fault mode (see
Fault Mode section). It will be left to the user to verify that the LED's are functional.