Archive for mp640R printer

Canon MP640R Printer B200 Error

Posted in Computers with tags on March 22, 2017 by marksun

Looks like the end of the line for the Canon MP640R printer.  Out of the blue, we get this B200 error  with the onscreen message to “remove the power connector and call the service center.”


Following some googled info, I could recovery to apparent “normality” by  power off,  lift cover and platen up to expose the printhead, power on, closing cover quickly before printhead moved to the left rail.  Couple of times, the printer booted to its normal menu without error.  In this state I was able to print – once. The output is showing alignment errors and there was an immediate return to the B200 Error.  If I could get it to print consistently I’d at least use it until the ink ran out, but it’s not going to make it.

There are some posts from people who say they have recovered from this error.   Hard to know because it’s the Internet – but one amusing if disturbed YouTubed fix is really a video of the “final solution” approach.   There are videos that show that cleaning this part can fix the B200 error.  I’m curious,  but not enough to go down that road.  This is not a glitch, it’s a hardware failure. This printer is seven year old.

The culprit: probably the printhead.  A serious repair approach would be to replace the printhead, which is the carrier which holds the print cartridges, and easily lifts out of the carriage. This is a $30 to $50 ebay/Amazon part.  I’m tempted but this time, I’ll scrap the printer. Seven years is enough.

To make things complete, it appears that the Canon 220 and 221 printer cartridges are obsolete.  I’ve maintained a one-deep inventory of these things so I’m out about $60 or $80  in now useless cartridge inventory – about half the cost of a new printer!   ( Mar 22 2017).

Overall this printer when it worked has been the least aggravating of the home printers I’ve owned.  I’ll probably stick to a Canon Pixma inkjet.  We’ll see if the BuyMore down the street has something in stock at a reasonably competitive price to Amazon…

  • small footprint
  • 5 cartridge
  • wifi
  • scanner
  • print duplexer
  • rear photo paper tray

Linksys SRX200 down, enter the WRT1900AC

Posted in Computers, Electronics, Uncategorized with tags , , , on May 18, 2014 by marksun

The SRX200 stopped working last night after being flaky for some time.  It was put in service April 3, 2011 for a service life of just over 3 years.  This seems to be about how it goes with these routers.  Being on continuously for days, weeks, months, and years, it is a short, hot life on the shelf dealing packets.

The WRT1900AC is huge by comparison and comes at a hefty price of $267.77 or so at Best Buy.  It’s a dual band 2.4 and 5 GHZ ,  has USB 3.0 and a SATA USB 2.0 Port enabling it to function as a NAS, 4  Gig  ethernet ports, a Dual core 1.2GHz CPU, and most interesting of all is an OpenSource ready device meaning it will be able to take firmware uploads that will make possible advanced controls for this router, perhaps at the expense of a reasonably good interface.




C-NET gave this router very high marks.

The command interface is accessible using it’s default IP of

The NAS feature is extremely interesting and we’ll be checking that out soon enough.

Setup.  The router comes with minimalist instructions and a DVD.  You do need to go through these steps to activate the router for Internet connectivity.


Printer: MP640R

WIFI: Configured using “Wifi Push Button protected setup”.  The standard select device/passcode approach did not work.


This router produces  10M interference at 28.121581 MHZ.
So far, don’t know how to get rid of this except to turn off the router.  May 18 2014
(Try lowering the data rate which may move the “birdie” somewhere else.)


Wireless Canon MP640 Printer Stopped Working (and the fix)

Posted in Computers, technology with tags on October 26, 2011 by marksun

It is surprising how often the Canon MP640 printer fails to print.  The only indication of the problem is that the printer queue on the PC reports an “error”, and obviously, no print.  Nobody  messed with the printer and the printer just sitting there shows  no indication of a problem (flashing lights,  grinding noises, paper spewing out etc).

The printer allows you to view the network configuration and by going through the menus, and it is clear an IP address was assigned to the printer.  Ping the IP from the PC and  the port is pingable.  That means there is IP connectivity (see notes on the ping test below).  Something is messing up the communication between the PC and the printer.  The thing between them is the router so that is the next stop.

The fix if ping succeeds but still cannot print – try this and check for a router configuration problem.

Next, logged into my wireless router which is a Linksys WRT54GX2 running WPA2 personal security with MAC filtering.   In the Wireless Security Tab,  both  WPA Personal and WPA2 Personal were checked.    I unchecked WPA Personal.  Printer started working.   Why  were both checked?  Who knows.

Ping fails – router problem – reboot the router.

An error occurs in print queue suspiciously like the case above but the printer IP is not pingable meaning no IP connectivity.   Go through the menus on the printer.  If it cannot see the router’s SSID then the printer has no network.  In this case it’s probably the router. The fix- recycle power on the router to reboot.  To do this, pull the power plug on the router for a few seconds, then plug back in.  This fixes the problem – takes a couple of minutes for the router to reboot and the wireless devices and printer to reacquire the network through DHCP.

What’s up with this router huh?   It’s frequently involved in cases where the “internet is down” in the house.  If it’s not the cable company, it’s usually the router, the cable modem, or both.  Diagnostics frequently begin by nuking one or the other or both by pulling the power cables out and replugging.  Try to be methodical when doing stuff like this and it’s best if nothing important is up on your computers!

More on the Ping Test: 

Just in case this talk about ping is not helpful,  ping is a network troubleshooting tool.  The term ping dates back to the second world war submarine warfare sonar technology. The principle  is to send a loud sound called a “ping” from a loudspeaker under water.  An echo would indicate the presence of something out there.  In tcp/ip networking, a ping is a special packet sent to a specific target (identified by its IP address) which responds back with an echo response.  This tells you that the target, in this case, the printer, has a (most likely) functional network connection.  A network printer that does not respond to a ping has a network problem, and that would be a likely cause of printing failure.  To do a ping test, you need to 1) find the IP addresss of the target printer and 2) run a ping command.  In the case of the  Canon 640 wireless printer, one way to determine the IP address is from the printers front panel.  Use the dial selector to navigate:  device settings > lan settings > confirm lan settings > wireless lan settings > ip address.  In my case, I see  an IP address of  Next on your windows PC, from the start menu,  get to a command prompt by typing “cmd” in the search field, then type  “ping”.     If you get lines of consecutive replies, that is the printer responding to your ping echo requests.  If you get no response, that is the indicator that the devices (your PC and the printer) are not talking to each other.   As always, google ping for more.