canon irc-2620 black display

[pontiac]

customers display went blank with no functions, only the green led is lit. I replaced the control panel and still the same. Bummer is i do not have a spare ir-c2620 that i can test boards with i only have 3220's and 3200's.Any ideas as to which pcb may be the problem? Thanks everyone for replys.

[teckat]

Remove/clean & Re-seat the memory DIMMs, the boot ROM-
Check the connection between the Sub-Main Controller (J1303) and the Main Controller (J1209) to see if they are seated correctly.

Ensure that the voltage between the neutral and ground outlet poles is 1/2 a volt or less.

Main Controller PCB has an LED101 which is ON during normal operation. When you experience a blank LCD screen, inspect the Main Controller PCB LED101, if the LED is OFF, then re-seat or replace the SRAM PCB (FG3-3669-000) which is mounted on the Sub Main Controller PCB.

in your case-u can swap SRAM PCB to test between any 3200 series printers

Note-
1-the 2620/3220 MAIN PCB IS SAME-the 3200 Main pcb. is different.
2-all have same DC PC
3-Sub-Controller Board -same for all
4-SRAM BOARD PCB - same for all

does the printer boot up ??

this is for all imageRunners>>>>>>>>Remove>Clean>Re-Seat>Measure Pcb's
BD1.JPG

Holding the Sub PCB put the edge of a ruler on the edges of all the Sub PCBs as
shown in the photo below. All PCBs should contact with the ruler; if not, the protruding PCB must be reseated by loosening the two screws securing the board, then with both hands, securely seat it in its slot.

[charm5496]

follow teckats instructions. Most of the time a blank display with green light on is a main controller cage issue and this model was well known to have boards come loose or have poor contact and that is why you have to measure on them. It could very well be a boot rom, RAM or the main controller itself though.