Technical data

8 Troubleshooting

8.1 Introduction

WARNING: Some electronic components store a high voltage

charge, even though power is not connected, and can cause a

dangerous shock if touched. Do not touch exposed circuitry on the

SP40S Multi-Function Facility Communication System unless the

circuitry has discharged for one hour and a safe discharge procedure

is used.

WARNING: Provide UL required alternative signaling means

during trouble conditions and servicing to assure adequate protection

of people and property. Ensure that qualified service persons

immediately replace any modules that have malfunctioned.

CAUTION: Make sure that only qualified personnel in accordance with the

procedures in this manual conduct troubleshooting and servicing. Do not attempt

to make other adjustments, modifications, or repairs. Never use water, steam,

cleaning liquids or sprays on the panel.

CAUTION: User servicing of the panel is limited to field-wiring changes, PC

board replacement, and following the instructions in the Installation chapter

(Chapter 4) and troubleshooting procedures in this chapter.

• After any troubleshooting procedure is completed, perform a complete system checkout

as described in Section 4.6.

SP40S Multi-Function Facility Communication System Manual, Revision D