Gasboy 1000 Series FMS Diagnostic Manual - Manual (Page 136)

Replacement Instructions
03/07/03 7-17
REPLACING A PRINTER CONTROLLER PCB
Remove Old PCB
1. Disconnect all 7 cables from the Printer Controller PCB.
2. Remove the 6 nuts which secure the Printer Controller PCB to the Printer Mounting Bracket.
Also remove the 3 fiber washers from the top 3 standoffs before removing the defective
Printer Controller PCB.
3. Verify that the switch settings of the new Printer Controller PCB are correct. Switch 1 is an
eight position DIP switch and should have switch positions 5 and 8 set to the off position.
Switch 2 is a four position DIP switch and should have switch position 4 set to the off
position. All other switch positions are on. Refer to the Series 1000 Operation Manual for a
chart and diagram on Controller Board DIP Switch Settings.
Install New PCB
4. Install the new Printer Controller PCB (component side toward the printer mechanism and
phone jack connector pointing down) and secure it with the previously removed nuts and
fiber washers. Be sure to install the fiber washers on the top 3 standoffs to prevent any
shorting of traces that may otherwise occur.
5. Reconnect all 7 cables to the Printer Controller PCB.