[Error Code] E744 IR4570

[okeetee]

Hi all,
I have some problem about IR4570, it occured Error code E744. I bought new rams to replace it. (512 mb 2 pcs.) The copier show dark screen, but the power light is show. Could u suggest me to slove it?

Thanks...

[SCREWTAPE]

What's the sub code?

[SCREWTAPE]

Check this. The E744-3030 can be caused by an insufficient amount of RAM installed in the machine. Enter service mode to check the amount of RAM recognized by the machine.

COPIER>DISPLAY>ACC-STS>RAM

The machine should display 512MB of RAM installed.

*NOTE Some machines will have 2x256MB SDRAM DIMMs installed and some will have 1x512MB SDRAM DIMM installed.

I think (2) 512mb sticks is not a good option.

[okeetee]

I try to install RAM 2x256mb & 1x512mb , it is not work.The machine still show dark screen.

[SCREWTAPE]

Bootrom.

[teckat]

I try to install RAM 2x256mb & 1x512mb , it is not work.The machine still show dark screen.

For manufacturing convenience, the DIMM configuration has been changed from using 2 x 256 MB memory DIMMs (WA7-3296-000) to 1 x 512 MB memory DIMM (WA7-4625-000)

Important Notes for Servicing the imageRUNNER 2270 / 2870 / 3570 / 4570 Models:

- When replacing a DIMM, use (Qty 1) 512 MB DIMM or (Qty 2) 256 MB DIMM. The 256MB DIMM will continue to be supplied.

- Be careful not to install a 512 MB DIMM into a machine with 512 MB already installed.

Adding a 128MB, 256MB, or 512MB DIMM into the additional open slot will render the machine inoperative.
- The 512MB DIMM can be mounted on either of the slots.

2270 / 2870 / 3570 / 4570 is equipped with a 20 GB Hard drive and 512 MB of memory.

[teckat]

imageRUNNER 2230 / 2830 / 3530 / 2270 / 2870 / 3570 / 4570 No Power, No Display, Control Panel Green LED is On - RMT1 Signal Checks

When you turn on the machine there is no power up sequence, no LCD display, and the control panel Green LED is on. The All-Night Power Supply protection circuit may be shutting off power to all loads. The RMT1 and RMT2 signals are used to trigger the protection circuit and disable the power supplies. (Refer to page 10-16 in the service manual for an explanation of the Protection Function)
The RMT1 signal can be verified by using the following procedure:

Note: You must make these checks in this order for the stated conclusions to be accurate.


Checking RMT1 Protection Circuit Signal

1) Power On the machine and visually check the Green LED (LED1006) on the Main Controller PCB. If LED1006 is Lit, the failure is NOT in the RMT1 Protection Circuit. If LED1006 goes On then Off, go to the next check.

2) Check the Main Controller PCB connector J1020 pin 5 to GND and pin 6 to GND. (To test DC voltage you can use the metal chassis of the machine as your GND connection.) If 3VDC is measured at connector J1020 on either pin 5 or 6, the failure is not in the RMT1 Protection Circuit. If you do NOT measure 3VDC at connector J1020, go to the next check.

3) Check the Controller Power Supply PCB connector J216 pin 9 to GND and pin 10 to GND. If 3VDC is measured at connector J216, the failure is in the wiring between J216 and J1020. If you do NOT measure 3VDC at connector J216, go to the next check.

4) Set your meter to read AC Voltage. Check the Printer Power Supply connector J1301 pin 1 to pin 3 for 115VAC. If 115VAC is measured at connector J1301, the failure is not in the RMT1 Protection Circuit. If you do NOT measure 115VAC at connector J1301, go to the next check.

Note 4: J1301 on the General Circuit Diagram is J301 on the Printer Power Supply PCB

5) Check the AC Driver PCB Connection WH102 (Hard wired) across the White wire to the Black wire for 115VAC. If 115VAC is measured at connector WH102, the failure is not in the RMT1 Protection Circuit and you should confirm the wiring between WH102 and J1301. If you do NOT measure 115VAC at connection WH102, go to the next check.

Note 5: The Green LED on the Control Panel is lit as part of our symptom. Therefore, there must be 115VAC on the AC Driver PCB.

6) Set your meter to read DC Voltage. Check the AC Driver PCB connector J209 pin 3 to GND. If 3VDC is measured at connector J209, the failure is not in the RMT1 Protection Circuit and you should replace the AC Driver PCB. If you do NOT measure 3VDC at connector J209, go to the next check.

Note 6: Measuring 3VDC at connector J209 confirms 115VAC is being supplied to the All Night Power Supply. Losing the 115VAC input to the All Night Power Supply will cause the 3VDC RMT1 signal at J209 to be zero.

7) Check the All-Night Power Supply PCB connector J692 pin 1 to GND. If 3VDC is measured at connector J692, the failure is in the wiring between J692 and J209. If you do NOT measure 3VDC at connector J692, go to the next check.
8)Check the All-Night Power Supply PCB connector J693 pin 1 to GND. If 3VDC is measured at connector J693, check the All Night Power Supply 115VAC input at connector J681.

Note 8: Any loss in 115VAC to the All Night Power Supply will generate the RMT1 Protection Circuit condition. You will need to confirm whether the AC Driver PCB (Hard connection at WH101) is failing to provide the 115VAC or the wiring to J681 on the All Night Power Supply is broken.

If 115VAC is measured at J681, AND the 3VDC is at J693, replace the All Night Power Supply PCB. If you do NOT measure 3VDC at connector J693, go to the next check.

9) Check the Main Controller PCB connector J1021 pin 3 to GND. If 3VDC is measured at connector J692, the failure is in the wiring between J693 and J1021. If you do NOT measure 3VDC at connector J1021, replace the Main Controller PCB.

[teckat]

MEAP function (H boot/N boot)

==> memory expansion needed
without memory expansion, the device will not
operate (E744 is displayed)

E744= language file/boot ROM error

E744 =There is an error in the language file/boot ROM.
0001= The version of the language file on the HDD and that of the bootable do not match.
-Download a language file of the
correct version.

0002= The size of the language file on the HDD is too large.
-Download a language file of the
correct version.

0003= There is no language file on the
HDD indicated by config.txt for a switchover.
-Download a language file of the
correct version.

0004= An attempt to switchover to a language the HDD fails.
-Download a language file of the
correct version

1000= The boot ROM that is mounted is of the wrong type.
-Replace the boot ROM with one of
the model in question.

2000= The engine ID indicated by the software ID is illegal.
-Replace it with a software ID of the
correct model.

[teckat]

if poster has a bad "N" boot rom they must call Canon

[safari]

check your ram wherether it is PC133 ram? PC100 Ram doesn't work.