Ampac FireFinder PLUS - 16 Maintenance and Troubleshooting Chart; System Maintenance Procedures

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12.18.3 Printer Connections and Jumpering
Mounted on the back of the printer mechanism is the PCB that carries the;
➢ Connectors for interconnection to the Main Board,
➢ Jumper links required to set the programmed print modes; and
➢ Printer 5 volt DC Power Supply.
Figure 121: PCB Layout
Jumper Settings
Designator
Jumper State
Function
J1
NOT Inserted
Selects ESC Commands
Inserted
Selects UP Commands
J2 Set as
Default
NOT Inserted
Selects ASCII Character Printing Mode
Inserted
Selects Chinese Character Printing Mode
J3
NOT Inserted
Select Printing by Contrary Direction
Inserted
Select printing in the Normal Direction
J7 Set as
Default
Insert the Shorting Clip Between Pins
1 and 2
Selects the 12 X 12 Font
Insert the Shorting Clip Between Pin 2
and 3
Selects the 15 X 16 Font
12.18.4 Printer 5 Volt Power Supply
27 volts DC is taken from Main Board (BRD86MBA) and fed to CN1 of the 5volt Printer Power Supply
Board. It is this board that drops this voltage from 27volts to 5volts for use by the Printer. Mounted to
rear of printer
Figure 122: Printer Power Supply Board Layout