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496236 Issue 4
Control Panel Main PCB
Figure 3 shows the main PCB inside the case lid. The mains transformer and
internal speaker are located in the back section of the case.
Figure 3. Inside the Control Panel
Reset Pins
Microcontroller
NVM Chip
F2 - 12V Aux
Fuse
F1 - Battery
Fuse
F3 - 21 VAC
Fuse
Connectors
21VAC
Connector
Battery
Connector
Volume Control
for Entry/Exit
tones
Backlight Link
Tamper switch
Comms
Connector
Summary of Contents for 9448+
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