ZOLL EMV+ - Page 212

Ventilator & Calibration Troubleshooting
6–40 www.zoll.com 906-0731-04-01 Rev. C
3470 Self Check Fault Description:
too many consecutive
NACKS for any
combination of
LTC1760, LTC4260, or
AN1112 (Note: PIM
communication.
Failure)
Possible Cause:
• faulty or loose PIM
to CPU cable
• faulty PIM board
• Check for damage/seating of the PIM to CPU cable ->
faulty or loose PIM to CPU cable -> Replace the PIM to
CPU cable
• If the above does not resolve the problem -> faulty PIM
board -> Replace the PIM Board
1471 Self Check Failure Description:
cannot communicate
with IO expander
responsible for
sampling buttons and
driving LED's
Possible Cause:
• Stuck I2C bus
• dislodged CPU to
UIM connection
• faulty UIM adapter
or CPU board
• Check to see if the I2C bus is stuck by power cycling the
device if the problem clears ->Stuck I2C bus -> No
further action required
• Check the CPU to UIM connection ->dislodged
connection on CPU(J4) to UIM(J1) connection -> resolve
issue
• If none of the above-> faulty UIM adapter or CPU board-
> replace UIM Adapter or CPU/SPO2 Stack Kit
1472 Self Check Failure Description:
rate of corrupted
packets from SPM is too
high
Possible Cause:
• faulty or loose PIM
to CPU cable
• electrical
interference
• Check damage/seating of the PIM to CPU cable->faulty
or loose PIM to CPU cable -> replace the PIM to CPU
cable
• if the above does not resolve the issue possible cause -
>electrical interference -> replace SPM Module
1474 Self Check Failure Description:
CPU and PIM
communication gaps
Possible Cause:
• faulty or loose PIM
to CPU cable
• SPM application
corrupted
• check to see if the SPM is operating by looking for a
blinking LED (DS1) on the SPM PCB If the LED is blinking,
Check for a faulty or loose PIM to CPU cable-> faulty or
loose PIM to CPU cable -> replace PIM to CPU cable
• check to see if the SPM is operating by looking for a
blinking LED (DS1) on the SPM PCB If the LED is Not
blinking, the SPM firmware may be corrupt-> corrupt
SPM firmware -> reprogram SPM
• If the above do not resolve the issue-> Faulty SPM
Module-Replace SPM module
CODES NAME
Description /Possible
Cause
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