Simplex 4020 Troubleshooting Guide

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Figure 2-5. 565-256 Power I/O Interface PCB Assembly
Figure 2-6. 565-220 Power I/O Interface PCB Assembly
Figure 2-7. Voltage Points on Power I/O PCB Connectors and Terminal Blocks
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4020 Power I/O Interface,
Continued
Power I/O Interface PCB
Layout
P4
J1
P5
P12
TB2
TB3
P10
P13
TB4
P14
P11
P9
P8
P7
P1
P2
P3
P6
RED
BLK
YEL
R139
P1
P2
J1
J2
P3
P4
P5
P6
P7
TB1
P8
P9
+ 24 V A-tap ( TB2 )
+ 24 V B-tap ( TB3 )
+ 24 V C-tap ( TB4 )
565-256 TB2, TB3 or TB4 Terminal Block565-256 P2 or P3 Connector
565-220 P8 or P9 Connector
565-220 TB1 Terminal Block
565-256 P4 Connector
0 V
+ 24 V (System)
+ 5 V (Std Slaves)
0 V
3 6
2 5
1 4
565-220 P2 Connector
0 V
+ 24 V (System)
+ 5 V (Std Slaves)
0 V
4 1
5 2
6 3
Trouble
(Low = Trouble)
+ 36 V
(Mapnet)
0 V
4 3
2 1
Trouble
(Low = Trouble)
+ 36 V
(Mapnet)
0 V
1 2
3 4
B– Return
B+ Return
0 V B
+24 V B-tap
A– Return
A+ Return
0 V A
+24 V A-tap
8
7
6
5
4
3
2
1
0 V
6 5 4 3 2 1
+ Return
– Ret
urn

Simplex 4020 Specifications

General

Type	Fire Alarm Control Panel
Manufacturer	Simplex
Model	4020
Display	LCD
Frequency	50/60 Hz
Battery Backup	Yes
NAC Outputs	4
Power	120/240 VAC
Voltage	120/240 VAC
Operating Temperature	0°C to 49°C (32°F to 120°F)
Humidity Range	Up to 93% RH, non-condensing
Communication Protocol	Optional