Service manual

5-12 Samsung Electronics
¥ POWER MONITOR (U16: KIA7045F)
If +5V supplied to KIA7045F is so unstable as to reach +4.65V - +4.35V (typically 4.5V), it will recognize it
as power failure. Then KIA7045F output terminal becomes low (0V) and the voltage is impressed to flash
memory and KS32C6200, running RESET (LOW ACTIVE). Flash memory and KS32C6200 are reset first.
Thereafter modem, print control parts and CIP(Color Image Processor) linked to /RST-OUT terminal of
KS32C6200 are reset as well. KIA7045F output terminal of open drain structure is pulled up 5.1k½ and put
out.
5-1-3 SYSTEM MEMORY
System memory consists of 512KB flash memory and 2MB DRAM. Flash memory and DRAM are selected by
each CHIP SELECT (/ROMCS, /RASO, /RAS1, /LCAS, /UCAS), and data is accessed half word (16bits) by
half word.