Brother HL-1020 Service Manual page 252

5. Install the main controller board into the printer by sliding it into the
guide rails.
6. Secure the main controller board with the four screws.
7. Reconnect the interface cable (printer cable) from your computer.
Plug the power cord into the AC outlet and turn on the power switch.
8. To check that the SIMM is installed correctly, you may perform a Test
Print "Print Configuration" which will print the current total memory
size.
CHAPTER 4 OPTIONS
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