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What is zero cross signal used for in ricoh? - Ricoh 6513 Copier

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Kyocera mita 5035 code 6400 c


Zero-crossing signal problem

• The main PCB does not detect the zero-crossing signal (Z CROSS SIG) for the time specified below.


Causes


Poor contact in the connector terminals. - Check the connection of connectors YC1-3 on the main PCB and YC2-6 on the power source PCB, and the continuity across the connector terminals. Repair or replace if necessary.


Defective power source PCB. - Check if the zero-crossing signal is output from YC2-6 on the power source PCB. If not, replace the power source PCB.


Defective main PCB. - Replace the main PCB if C6400 is detected while YC2-6 on the power source PCB outputs the zero-crossing signal.

Dec 18, 2010 | Kyocera Mita KM-5035 Printer

1 Answer

My kyocera km1820 displays error code 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.
- 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.

Sep 24, 2010 | Kyocera Copystar CS-1820 Black and White...

1 Answer

AN SC547 ERROR ON MY RICOH AFICIO MP C3000 MACHINE


547 D Zero cross error § The zero cross signal is detected three times even though the heater relay is off when turning on the main power. § The zero cross signal is not detected for 2 seconds even though the heater relay is on after turning on the main power or closing the front door. § The detection error occurs twice or more in the 11 zero cross signal detections. This error is defined when the detected zero cross signal is less than 45. § Defective fusing lamp relay § Defective fusing lamp relay circuit § Unstable power supply 1. Check the power supply source. 2. Replace the PSU

Aug 26, 2010 | Office Equipment & Supplies

1 Answer

Eror sc547


The error sc 547 refers to a "Zero cross signal malfunction".

This means that the applied power supply AC frequency was detected at over 66Hz or below 45Hz, and the zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on.

Possible causes are:
- Power supply board defective
- IOCSS defective
- BICU defective

Try to reset the SC code by entering SP5810 and select 1.
Then hold down the photo mode key and the # key at the same time for at least 3 second.
Then turn the machine off and on again.
If the same issue still appears, try to replace the Power Supply Unit.

Jul 04, 2010 | Ricoh Aficio MP 2000 Black and White...

1 Answer

ERROR SC 547


Zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on.
Possible Causes
• Power supply board defective
• Noise on the ac power line
Try conect the copier in other side.
Disconnect all the household-electric of the place.

Feb 20, 2010 | Ricoh Aficio 450 Copier

1 Answer

Describe your ricoh aficio 350 functional problens Problem sc 547-00


The applied power supply ac frequency
was detected at over 66Hz or below
45Hz, and the zero cross signals are
not detected within a certain period
within 500 ms after the main power
switch has been turned on. Pls check power supply board or try to use an AVR (autonatic voltage regulator)

Jan 22, 2010 | Ricoh Aficio 450 Copier

1 Answer

I have problem with aficio 3800c it is showing


SC 560 Zero Cross Error

When the power switch is turned on. The machine checks how many Zero-cross signals are generated during 500 ms. If the number of Zero-cross signals is more than 66 or less than 45 and the condition is detected more than 10 times this code is shown.

Cause is electrical noise in the supply from the power cord.
Solution
  • Change to another power wall socket
  • Change power cord
  • Replace main PSU (Power Supply Unit)

Aug 30, 2009 | Ricoh Aficio AP3800C Laser Printer

1 Answer

Ricoh FT 6665 copier


Zero Cross Signal Malfunction.
Fusing/Hot roller temperature does not increase.
The fuser rollers need to be inspected.

Sep 10, 2008 | Office Equipment & Supplies

2 Answers

I'm getting a SC 558 error


SC558 Abnormal zero
cross signal
- Timing & Condition -
Zero cross signals
generated within certain
period do not reach a
predetermined target
value.
• Poor connections
• Blown fuse
• Defective AC drive board
• Defective main control
board
• Defective I/O control
board
1. Make sure the following are connected
properly:
• CN212 and CN229 on the I/O control
board
• CN303 on the main control board
• CN7 on the AC drive board
2. Check the current through the signal lines
in the above harnesses.
3. Replace the fuse (FU101) if it is blown.
4. Test the AC drive board, I/O control
board, or main control board by checking
the signal line at each pin.
[Signal Check]
• Zero cross: CN7-5 on the AC drive board/
CN229-6, TP216, or CN212-B8 on the I/O
control board/CN303-B4 or TP120 on the
main control board

Any problems get back to me
Than You

Mar 11, 2008 | Ricoh 6513 Copier

1 Answer

Cause for error code sc560 on ricoh ap3850c


H there below is what is stated in the service manual and I suggest to change the power cord before the main PSU (Power Supply Unit)


SC 560 Zero Cross Error

When the power switch is turned on. The machine checks how many Zero-cross signals are generated during 500 ms. If the number of Zero-cross signals is more than 66 or less than 45 and the condition is detected more than 10 times this code is shown.

Cause is electrical noise in the supply from the power cord.
Solution
  • Change to another power wall socket
  • Change power cord
  • Replace main PSU (Power Supply Unit)
I hope this help you
Thanks J

Jan 12, 2008 | Ricoh Aficio AP3800C Laser Printer

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