Epson 5700i Service Manual - Page 24

EPL-5700L/5700i Table 2-1. C292 Main Board - Main Controller Name Location Functions CPU TM95C001 16bit CISC-CPU driven at clock frequency 25MHz. IC1 Package: 64pin, QFP Power supply voltage: 5V Single ASIC (SCL) E05B68NB This ASIC controls the following: • Memory (RAM/ROM) • DMA (Video, I/O) • RIT (Resolution Improvement Tech.) / PGI (Photo Grade Improvement) function. • Video I/F (communication with the Engine Controller) IC5 • Panel LED Package: 208 pin, QFP Power supply voltage: 5V/3.3V Operation frequency: DMAC max 25MHz PIF max 25MHz DCMP max 60MHz RIT max 100MHz ASIC (TUSB) E05B69NA IC21 Controls USB I/F. Package: 64 pin, QFP Power supply voltage: 5V/3.3V Operation frequency: max 48MHz TTL SN74LV162184DGGR 1284 driver. Receives / sends parallel I/F IC7 signal. Power supply voltage: 5V DRAM M5M418165CJ-6 IC3 One EDO with 16Mb, 16bit, 60ns is mounted. Operates as standard memory. ROM HN27C4000G-10 IC2 4Mb, 16bit, and 40pin module. Stores the control program. RAMSIMM CN1 72 pin, memory expansion connector Revision A Table 2-1. C292 Main Board - Main Controller (continued) Name Location Functions USB I/F CH5 USB connector with the host PC Parallel I/F CH2 Parallel connector with the host PC Control Panel I/F CN4 LED-control connector Table 2-2. C292 Main Board - Engine Controller Name Location Functions CPU M38073E4FS IC201 Controls the engine. Motor Drive IC TEA3718SDP IC204/ IC205 Drives the main motor. OPERATING PRINCIPLES ELECTRIC CIRCUIT 24