SENSTAR FPS-3, Installation & Operation Manual

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Table 4. FPS-3 Interface Board Fault Isolation Matrix
SYMPTOM ZONES AFFECTED CAUSE REMEDY TYPE
NO SYSTEM OPERATION U1 REPLACE MC78MO5CT
NO SELF-TEST and NO AUDIO ALL ZONES U2 REPLACE 74HCT02
COMMUNICATION FAILURE ALL ZONES U3, 4, 33, 40 or 41 REPLACE ALL U3, U41-74HC541
U4-74LS85
U33-74HCT74
U40-74HC1 09
NO SELF-TEST, AUDIO, ALL ZONES U5 REPLACE 74HCT138
LEDS, ALARMS OR TAMPERS
NO PROCESSOR LEDS
ALL ZONES U6 REPLACE 74HCT02
1 through 8 U7 REPLACE 74HC273
9 through 16 U8 REPLACE 74HC273
17 through 24 U9 REPLACE 74HC273
25 through 30 U1O REPLACE 74HC273
NO OPERATOR SELF-TEST ALL ZONES U2 REPLACE 74HCT02
1 through 16 U12 or 42 REPLACE ALL 74HC273
17 through 30 U13 or 43 REPLACE ALL 74HC273
NO ALARM, TAMPER or ALL ZONES U14 REPLACE 74HC32
LOCAL SELF TEST
CONSTANT or NO TAMPER
ALL ZONES U15, 16 or 17 REPLACE ALL U15-74HC541
U16-74HC1 61
U17-74HC1 39
1 through 8 U18 REPLACE 74HC540
9 through 16 U19 REPLACE 74HC540
17 through 24 U20 REPLACE 74HC540
25 through 30 U21 REPLACE 74HC540
CONSTANT or NO ALARM ALL ZONES U22, 23 or 24 REPLACE ALL U22-74HC541
U23-74HC161
U24-74HC138
1 through 4 U25 REPLACE 74HC540
5 through 8 U26 REPLACE 74HC540
9 through 12 U27 REPLACE 74HC540
13 through 16 U28 REPLACE 74HC540
17 through 20 U29 REPLACE 74HC540
21 through 24 U30 REPLACE 74HC540
25 through 28 U31 REPLACE 74HC540
29, 30 U32 REPLACE 74HC540
NO AUDIO ALL ZONES U11 REPLACE 74HC273
1 through 8 U35 REPLACE 4051
9 through 16 U36 REPLACE 4051
17 through 24 U37 REPLACE 4051
25 through 30 U38 REPLACE 4051
NO AUDIO or ALERT TONE ALL ZONES U39 REPLACE MC34119