Brother PT-9500PC - P-Touch 9500pc B/W Thermal Transfer Printer, Руководство по обслуживанию

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II-15
2.3.1 Logic Components
[ 1 ] CPU
The CPU (U6), 32-bit microcomputer of Renesas Technology, controls and manages entire
system.
This CPU includes no internal ROM.
The internal RAM of M30823MH is 24 Kbytes and the internal RAM of M30800 is 8 Kbytes.
[ 2 ] RAM (SRAM)
Two 128 Kbytes SRAMs (U9 and U10) are used. These RAMs are used for data buffer.
[ 3 ] EEPROM
Two 4Kbit EEPROMs (U1 and U4) are used. This memory writes and stores the mechanical
information such as baud rate information, Vendor ID code and product ID code.
When replacing the main PCB, the data printed on the EEPROM body on the main PCB
such as serial number and mechanical alignment data must be stored. Use the provided
dedicated software to store the data connecting the PC to PT-9500PC with the serial IF cable
as shown in Fig. 2.3-2. For more information, refer to “Appendix 1. Test Software
Operation”.
Fig. 2.3-2 Write of Serial No. and Model Name
[ 4 ] ROM (Mask ROM / Flash ROM)
External ROM (U11) is 1 MB of mask ROM or flash ROM used to store the management
program and the character patterns.
Serial IF cable
PT-9500PC
PC