HOW REMOVE IT FROM THIS Defective power supply ERROR

Related to the power supply or power supply pcb

Hi
I found this explanation of your error, although my understanding of it is not entirely clear.
Code: C6400
Description: Zero-cross signal error
Interrupt of the zero-cross signal does not occur more than 1 s.
Causes: Poor contact in the connector terminals.
Defective power source PWB.
Defective engine PWB
You can find this here:
Error Codes Kyocera Mita TASKalfa 221 Code C6400
and also by changing the drop down menus along the top of the page you can view other errors for your machine and for other models and makes. You can also use the link to get a Service Manual for your machine.
Hope this is helpful, if so would you please register that with Fixya
Cheers

C6400 Zero-crossing signal problem
• The engine PWB does not detect the
zero-crossing signal for the time
specified below.
At power-on: 3 s
Others: 5 s

Causes: Poor contact in the connector terminals.
Remarks: Check the connection of connectors YC7
on the engine PWB and YC2 on the power
supply PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

Causes: Defective power supply PWB.
Remarks: Check if the zero-crossing signal is output
from YC2-11 on the power supply PWB. If
not, replace the power supply PWB.

Causes: Defective engine PWB.
Remarks: Replace the engine PWB if C6400 is detected
while YC2-11 on the power supply
PWB outputs the zero-crossing signal.

C6400

Contents: Zero-crossing signal problem
• The engine PWB does not detect the zero-crossing signal for the time
specified below.
At power-on: 3 s
Others: 5 s

Causes: Poor contact in the connector terminals.
Check procedures/corrective measures: Check the connection of connectors YC7
on the engine PWB and YC2 on the power
supply PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

Causes: Defective power supply PWB.
Check procedures/corrective measures: Check if the zero-crossing signal is output
from YC2-11 on the power supply PWB. If
not, replace the power supply PWB.

Causes: Defective engine PWB.
Check procedures/corrective measures: Replace the engine PWB if C6400 is detected
while YC2-11 on the power supply
PWB outputs the zero-crossing signal.

Zero-crossing signal problem
• The engine PWB does not detect the
zero-crossing signal for the time
specified below.
At power-on: 3 s
Others: 5 s

Causes:
- Poor contact in the connector terminals.
- Defective power supply PWB.
- Defective engine PWB.

Check procedures/corrective measures:
- Check the connection of connectors YC7
on the engine PWB and YC2 on the power
supply PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
- Check if the zero-crossing signal is output
from YC2-11 on the power supply PWB. If
not, replace the power supply PWB.
- Replace the engine PWB if C6400 is detected
while YC2-11 on the power supply
PWB outputs the zero-crossing signal.

Hi

Error C6400 appears in Kyocera FS118 when Zero crossing signal problem occurs i.e when the engine PWB doesnt detect the zero crossing signal. This can occur due to --

#1 Poor contact in the connector terminals.
#2 Defective power supply PWB.
#3 Defective engine PWB.

To reset it from Mainatince mode turn the power switch off and open the front cover. Now, turn the power switch on and press the system menu/counter key to enter the maintenance mode.

1. Press the enter key. A selection item appears.
2. Select Execute using the up/down cursor keys.
3. Press the enter key. The fusing problem data is initialized. (Four service calls, namely C6000, C6020,
C6050, and C6400 are reset.)
4. After this is complete press the back key. The indication for selecting a maintenance item No. appears.

Daniel Scott

You will have to call a Copystar or Kyocera technician to reset your fuser memory.

Defective power supply board. or Defective engine board

Hello, the c6000 is the Fuser heater 1/2 defective --- but is you are getting the c6400 --- is a zero cross signal error which means defective PWB. You must replace the engine PWB or the power source PWB and check for correct operations.

The cheapest route would be to replace the fuser but with the c6400 code I believe you would just be throwing your money away.

it is a zero cross signal error, could be poor conections or power supply faulty or engine board faulty. you will need to get a tech to check it out