Battery Troubles; Earth Grounds - Simplex 4100 Installation Manual

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9.2 BATTERY TROUBLES

If the LCD displays ... Master Battery Backup Status is Trouble
Check connector P9 on Master Power Supply.
Check that Batteries Terminals are Connected.
Check Fuse(s) in the Battery Harness.
Check for Charger Output at Battery Harness Terminals with the Batteries
Disconnected.
Measure Battery voltage with Terminals from Harness Disconnected. (>18
VDC)
Test Batteries under load for 1 minutes. (>23 VDC)

9.3 EARTH GROUNDS

If the LCD displays ... Master Earth Status is Trouble
Is Ground on Positive/Negative side of Power Supply ?
If a Positive Ground ... Remove half of the Motherboards.
Isolated to a Row ... Remove half of the Daughter cards.
If a Negative Ground ... Check Power, and Shields.
Ground could be Internal to the Control Panels.
Document No.: 4100-M011
INSTALLATION MANUAL
March 1998
SIMPLEX 4100 EWIS
Issue 1.0