Pacific Power Source UPC-3 - Troubleshooting and Diagnostics; Problem: Incorrect or Illogical Operation

SECTION 9 DIAGNOSTICS
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SECTION 9
USER DIAGNOSTICS
9 USER DIAGNOSTICS
This section is intended to aid the user in solving common problems that may occur while using the
UPC.
PROBLEM
Incorrect or illogical operation,
or program values invalid,
or "NO PROGRAM RUNNING",
or "FPERR" is displayed.
PROBABLE CAUSE –
Battery backed RAM information corrupt.
SUGGESTED CURE:
Clear ALL RAM and RESET CPU.
Refer to section 4.6.1.3 to perform this function.
To prevent the UPC from executing program parameters
upon power-up, hold the fn key down while applying power
with the INPUT POWER switch. You may then press fn
again to enter the SETUP mode.
If after Reset, the unit functions properly but the problem
recurs after being powered-down, the battery probably
needs to be replaced.
PROBLEM
LCD Display not readable PROBABLE CAUSE –
Battery backed RAM information corrupt.
SUGGESTED CURE:
Clear ALL RAM and RESET CPU.
Refer to section 4.6.1.3 to perform this function, or hold
down the CLEAR key while applying INPUT POWER to the
UPC. This will clear ALL RAM and RESET the CPU.