SIMPLEX 4100 EWIS Page 75
INSTALLATION MANUAL
Document No.: 4100-M011 March 1998 Issue 1.0
8. APPENDIX A – TROUBLE SHOOTING
PROCEDURE
8.1 GENERAL TROUBLESHOOTING INFORMATION
Before troubleshooting the system, notify the customer and monitoring facility that
you are repairing the system and may trip an alarm. Local codes may require
notification of additional personnel, therefore check local codes for these
requirements.
Tools required are a multimeter, side cutting pliers, IC removal/insertion tool
(optional) and two sizes of screwdriver to accomplish these procedures. It is also
recommended that Field Wiring Diagrams be used as required.
8.2 TROUBLESHOOTING CHART
The “Voltage Chart” shown on the following page contains voltage readings for
various motherboard terminals and connectors and is to be used as required. Do not
take voltage readings on the system printed circuit board IC’s.
When troubleshooting the 4100 system, check the obvious things first. These are
the LEDs, toggle switches, dip switch settings, power, clipped jumpers, resistors, city
jumpers and wiring to include contractor installed field wiring, all of which are located
in the fire alarm panel. Perform a visual inspection of the panel.
The following indications should be observed on the fire alarm panel.
(i) Normal LED indications.
(a) Green “Power” LED is illuminated.
(b) All other LEDs are OFF.
Note: If the green power LED is not illuminated, check the AC input voltage.
(ii) Toggle switches are in the down (normal) position.
(iii) Fuses are good and are the correct values.
(iv) Ensure dipswitches are properly set.
(v) Field wiring is correct (see Field Wiring Diagrams).
(vi) Correct jumpers and resistors are clipped.
(vii) Ribbon cables are properly installed.
If the alphanumeric display shows an abnormal indication on a module, troubleshoot
that circuit/printed circuit board first. Check the return field wiring to that printed
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