Brother International HL-2400C Service Manual - Page 95

2.3 2.3.1 Main PCB (Video Controller PCB) Outline The Main PCB consists of the circuits which perform the following functions; • Receive the printing data from the computer. • Convert the received data to the bitmap data such as characters or graphics. • Control the engine and send the generated bitmap data as a video signal. The control panel is controlled by communicating with the engine CPU to display LCD messages, light the LEDs and display the button status, etc. The power for the Main PCB is supplied from the engine through the engine interface connector. PCMCIA x2 RS-232C I/F CDCC I/F +5V Regurator +3.3V LS245 LS245 MIO BOARD MIO RELAY (CONNECTOR) PCB LS245 ADM202 Main PCB CPU MB86832 (SPARC lite) MASK ROM 32M mask x2(8MB) Flash ROM 8M x2(2MB) x2Banks Address Data F245 EDO DRAM 16M x8(16MB) ASIC MB87F1610 F245 MA,RAS,CAS SN75C1168 LS07 EEPROM X24C04 4kbit SIMM(72pin) 3Slots (EDO or Fast Page) 96MB max. Video HSync Command, PrReq VSync, Status, IReady, KeyStatus +5V GND ENGINE I/F Fig.4-37 IV-46