Question about Canon Speedlite 580EX II (1946B002)

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When fired the unit appears to discharge all the power but the photo is completely under exposed

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If the flash fires but the photos are dark, this typically indicates a fault with one of the following:
- fault of the main transistor that triggers the flash
- fault of the fiber optic cable that connects the flash head with the body

What you have to understand is that when you see one flash in operation, on a properly functioning unit there are actually two flashes in sequence. The first, pre-flash is used for metering the scene, then the follow up is the actual flash that gives the light in the photograph. If the transistor is faulty then it may just discharge the capacitor during the pre-flash, not leaving any energy left for the main flash. If the fiber optic cable is broken (it is very fragile), then the metering stage fails and the flash logic decides to abort the main flash.

Posted on May 12, 2013

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Posted on Jan 02, 2017

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My HP Photosmart C6280 asks me to replace the light blue ink cartridge and says it is unable to print until we replace the ink cartridge. We have replaced it three times and the same message appears. The...


Follow the below steps on the front panel of the All-in-One printer:
A. - Press and Hold the "Print Photos" & "Red Eye Removal" buttons. Release both buttons.

Display should say "Enter Special Key Combo"
B. - Press and release in sequence "Red Eye Removal", "Print Photos", "Red Eye Removal"
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display says "enter special key combo"

1. Press and release in sequence "Red Eye Removal", "Print Photos", "Red Eye Removal"
2. Press and release the right arrow button until the display says "System Configuration
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3. Press and release the "OK" button.
4. Display should say "Hardware failure status". If not there already, Arrow Key over to
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5. Press and release the "OK" button
6. Display should say "Hardware failure status: Clear. Press OK to clear".
7. Press and release the "OK" Button. Message changes to "Hardware failure status Cleared.
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8. Press and release the "CANCEL" button as many times as necessary, so that, either the
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PLEASE DO NOT TRY TO PRINT AT THIS STAGE.
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Flash fires irregularly... good exposures, then suddenly 3 way under exposed/black then a good exposure, the a completely burnt out over-exposed shot! Completely irregular.


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A. - Press and Hold the "Print Photos" & "Red Eye Removal" buttons. Release both buttons. Display should say "Enter Special Key Combo"
B. - Press and release in sequence "Red Eye Removal", "Print Photos", "Red Eye Removal"

1. Press and release the right arrow button until the display says "System Configuration Menu". (on C8100 use Touch Screen)

2. Press and release the "OK" button.

3. Display should say "Hardware failure status". If not there already, Arrow Key over to "Hardware failure status",

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5. Display should say "Hardware failure status: Clear. Press OK to clear".

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7. Press and release the "CANCEL" button as many times as necessary, so that, either the "Welcome to Photosmart Express" screen appears, or, the "Ink System Failure" screen appears. PLEASE DO NOT TRY TO PRINT AT THIS STAGE.

8. Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet.

9. Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer

10. Turn the unit on. The printer may display message "USE POWER BUTTON TO SHUTDOWN THE PRINTER" followed by "PRESS OK TO CONTINUE". Press OK.

11. If the printer has already initialized, then go to the next step. If not, the printer will start the "ONE TIME INK INITIALIZATION PROCESS". Allow this process to complete and do not interrupt. Once the initialization process is complete, the printer will print out a Diagnostic Page.

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1 Answer

0xc18a0101


Follow the below steps on the front panel of the All-in-One printer:
A. - Press and Hold the “Print Photos” & “Red Eye Removal” buttons. Release both buttons. Display should say “Enter Special Key Combo”
B. - Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal”
Display says "enter special key combo"
Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal” .

If "support COxxFN0723BR" appears with "uiaux" message, perform the below steps:
2. Press and release the right arrow button until the display says “System Configuration Menu”. (on C8100 use Touch Screen)
3. Press and release the “OK” button.
4. Display should say “Hardware failure status”. If not there already, Arrow Key over to “Hardware failure status.
5. Press and release the “OK” button
6. Display should say “Hardware failure status: Clear. Press OK to clear”.
7. Press and release the “OK” Button. Message changes to “Hardware failure status Cleared. Press Cancel to continue”.
8. Press and release the “CANCEL” button as many times as necessary, so that, either the “Welcome to Photosmart Express” screen appears, or, the “Ink System Failure” screen appears. PLEASE DO NOT TRY TO PRINT AT THIS STAGE.
9. Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet.
10. Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer
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13. To verify printer functionality print a SELF TEST PAGE.

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My nikon D60 is taking dark photos.


The only reason the camera will be taking dark photos is when it is under exposing the image taken. This can be due to the exposure compensation set to under expose the metered exposure. Make sure the expsosure compensation is set to '0' or increase it to compensate for the dark photos.

Also inaccurately metering a scene (such as a high contrast scene) can easily fool the meter into under exposing, especially outdoors.

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1 Answer

Error 0xc18a0301 - "Ink system has failed" on a Photosmart 6180


Error number 0xc18a0301 on HP printers Follow the below steps on the front panel of the All-in-One printer:
A. - Press and Hold the “Print Photos” & “Red Eye Removal” buttons. Release both buttons. Display should say “Enter Special Key Combo”
B. - Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal”
Display says "enter special key combo"
Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal” .

If "support COxxFN0723BR" appears with "uiaux" message, perform the below steps:
2. Press and release the right arrow button until the display says “System Configuration Menu”. (on C8100 use Touch Screen)
3. Press and release the “OK” button.
4. Display should say “Hardware failure status”. If not there already, Arrow Key over to “Hardware failure status.
5. Press and release the “OK” button
6. Display should say “Hardware failure status: Clear. Press OK to clear”.
7. Press and release the “OK” Button. Message changes to “Hardware failure status Cleared. Press Cancel to continue”.
8. Press and release the “CANCEL” button as many times as necessary, so that, either the “Welcome to Photosmart Express” screen appears, or, the “Ink System Failure” screen appears. PLEASE DO NOT TRY TO PRINT AT THIS STAGE.
9. Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet.
10. Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer
11. Turn the unit on. The printer may display message “USE POWER BUTTON TO SHUTDOWN THE PRINTER” followed by “PRESS OK TO CONTINUE”. Press OK.
12. If the printer has already initialized, then go to the next step. If not, the printer will start the “ONE TIME INK INITIALIZATION PROCESS”. Allow this process to complete and do not interrupt. Once the initialization process is complete, the printer will print out a Diagnostic Page.
13. To verify printer functionality print a SELF TEST PAGE.

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2 Answers

Ink system failure


Follow the below steps on the front panel of the All-in-One printer:
A. - Press and Hold the “Print Photos” & “Red Eye Removal” buttons. Release both buttons. Display should say “Enter Special Key Combo”
B. - Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal” 

display says: "enter special key combo"

C. - Press and release in sequence “Red Eye Removal”, “Print Photos”, “Red Eye Removal” 

display says: "uiaux"
display says: "support COxxFN0723BR"

Perform the below steps:
2. Press and release the right arrow button until the display says “System Configuration Menu”. (on C8100 use Touch Screen)
3. Press and release the “OK” button.
4. Display should say “Hardware failure status”. If not there already, Arrow Key over to “Hardware failure status
5. Press and release the “OK” button
6. Display should say “Hardware failure status: Clear. Press OK to clear”. 
7. Press and release the “OK” Button. Message changes to “Hardware failure status Cleared. Press Cancel to continue”.
8. Press and release the “CANCEL” button as many times as necessary, so that, either the “Welcome to Photosmart Express” screen appears, or, the “Ink System Failure” screen appears. PLEASE DO NOT TRY TO PRINT AT THIS STAGE.
9. Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet.

Make sure that you perform steps from 2-9.

10. Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer
11. Turn the unit on. The printer may display message “USE POWER BUTTON TO SHUTDOWN THE PRINTER” followed by “PRESS OK TO CONTINUE”. Press OK. 
12. If the printer has already initialized, then go to the next step. If not, the printer will start the “ONE TIME INK INITIALIZATION PROCESS”. Allow this process to complete and do not interrupt. Once the initialization process is complete, the printer will print out a Diagnostic Page. 
13. To verify printer functionality print a SELF TEST PAGE. 

Please perform all the above steps from 10 to 13 .

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4 Answers

Rinnai tankless water heater code 12


12 - Flame Failure or Poor Ground

1. Immediate code 12 is usually a defective gas valve, power supply problem, or defective fan motor wiring harness.

2. If code 12 occurs after a few seconds it indicates that proper operation was established, but then stopped unexpectedly.

3. Verify that fuel is being supplied to the unit.

4. Check for proper electrical ground. Unit must use a grounded power supply.

5. Check for flue blockage on inlet or exhaust.

http://www.foreverhotwater.com/service-codes.php

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