Brother International HL-1070 Service Manual - Page 195

CHAPTER 4 OPTIONS The following type of SIMMs can be installed: • 1 MByte HITACHI HB56D25632B-6A, -7A • 2 MByte HITACHI HB56D51232B-6A, -7A • 4 MByte HITACHI HB56A132BV-7A, 7AL, -7B, -7BL • 8 MByte HITACHI HB56A232BT-7A, -7AL, -7B, -7BL • 16 MByte TOSHIBA THM324000BSG-70 • 32 MByte TOSHIBA THM328020BSG-70 This printer can accept the following types of SIMMs; Speed Pin Type Height Output 60 nsec - 80 nsec 72 pin 25.4 mm (1") or less 32 bit or 36 bit  Note The printer has only one slot for a SIMM upgrade.If you want to increase your printer memory again after you have installed a SIMM module into the slot, you will need to remove the previously installed SIMM first. For example if you have previously increased your memory from the standard 4 MB to 8 MB by adding a 4 MB SIMM and you wish to increase your total memory to 12 MB, you need to remove the installed 4 MB SIMM and install the new 8 MB SIMM into the printer. Installing the SIMM When you install the SIMM, follow these steps: 1. Turn off the power switch and unplug the power cord from the AC outlet. Then, disconnect the interface cable from the printer. Fig. 4-3 Unplug the power cord and disconnect the interface cable  Note Be sure to unplug the power cord to the printer before installing or removing the SIMM and the main controller board. 4-7