Ink Jet Printers – replacement cartridge problems

admin — Fri, 14 May 2010 14:01:28 +0000

Problems with replacement inkjet cartridges not working correctly can often be avoided by following these installation instructions:

Allow the cartridges to stand upright ( the same way they sit in the printer ) for at least a couple of hours before installation

Do not shake the cartridges prior to installation

Make sure that the yellow rip tabs are fully removed before installation and allow the cartridge to breathe for 30 seconds or so before putting it into the printer.

Do not tip the cartridges once the yellow rip tab has been removed.

Fit the cartridges as a full set.

If the print pattern is poor after loading then perform up to 3 successive head cleans. If prints are still poor then switch off the printer (use the printer ON/OFF button not the power outlet) and leave it for at least three hours to allow any trapped air to disperse before trying again.

Constantly removing and replacing cartridges that have already been installed, particularly with Epson printers, can cause problems as it will pump air into the system. The cartridges are not designed to be removed once installed.

RAM

admin — Tue, 08 Sep 2009 07:52:54 +0000

RAM Types

DDR SDRAM – 184-pin SDRAM, 200-pin SO-DIMM
Introduced in 2001. Transfers data twice per clock cycle, doubling the data rate
Standard Name	Memory Clock	Cycle Time	I/O Bus clock	Data transfers per second	Module Name	Peak transfer rate
DDR-200	100 Mhz	10 ns	100 Mhz	200 million	PC-1600	1600 MB/s
DDR-266	133 Mhz	7.5 ns	133 MHz	266 million	PC-2100	2100 MB/s
DDR-300	150 Mhz	6.67 ns	150 MHz	300 million	PC-2400	2400 MB/s
DDR-333	166 Mhz	6 ns	166 Mhz	333 million	PC-2700	2700 MB/s
DDR-400	200 Mhz	5 ns	200 MHz	400 million	PC-3200	3200 MB/s


DDR2 SDRAM – 240 Pin DDR2 Memory DIMM, 200 Pin DDR2 Memory SODIMM
Introduced in 2004
Standard Name	Memory Clock	Cycle Time	I/O Bus clock	Data transfers per second	Module Name	Peak transfer rate
DDR2-400	100Mhz	10 ns	200 Mhz	400 million	PC2-3200	3200 MB/s
DDR2-533	133Mhz	7.5 ns	266 MHz	533 million	PC2-4200	4266 MB/s
DDR2-667	166Mhz	6 ns	333 MHz	667 million	PC2-5300	5333 MB/s
DDR2-800	200Mhz	5 ns	400 Mhz	800 million	PC2-6400	6400 MB/s


DDR3 SDRAM

Standard Name	Memory Clock	Cycle Time	I/O Bus clock	Data transfers per second	Module Name	Peak transfer rate
DDR3-800	100Mhz	10 ns	400 Mhz	800 million	PC3-6400	6400 MB/s
DDR3-1066	133Mhz	7.5 ns	533 MHz	1066 million	PC3-8500	8533 MB/s
DDR3-1333	166Mhz	6 ns	667 MHz	1333 million	PC3-10600	10667 MB/s
DDR3-1600	200Mhz	5 ns	800 Mhz	1600 million	PC3-12800	12800 MB/s

Links to articles:

SDRAM http://en.wikipedia.org/wiki/SDRAM

Cyclone Systems » Technical

Ink Jet Printers – replacement cartridge problems

RAM