SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
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2DC<br />
Code<br />
Contents<br />
Causes<br />
Remarks<br />
Check procedures/corrective measures<br />
C6000<br />
Broken fixing heater wire<br />
• In fixing warm-up, the time to reach<br />
50°C/122 °F exceeds 13.5 s, the time<br />
to reach 100°C/212 °F exceeds 10 s,<br />
the time to reach the primary stabilization<br />
exceeds 10 s or the time to<br />
reach the secondary stabilization exceeds<br />
24 s.<br />
Poor contact in<br />
the thermistor<br />
connector terminals.<br />
Thermistor installed<br />
incorrectly.<br />
Thermal cutout<br />
triggered.<br />
Check the connection of connector CN4 on<br />
the power supply board (KP-5059) and the<br />
continuity across the connector terminals.<br />
Repair or replace if necessary.<br />
Check and reinstall if necessary.<br />
Check for continuity. If none, replace the<br />
thermal cutout.<br />
Heater lamp installed<br />
incorrectly.<br />
Check and reinstall if necessary.<br />
Broken heater<br />
lamp wire.<br />
Check for continuity. If none, replace the<br />
heater lamp.<br />
C6020<br />
Abnormally high fixing unit thermistor<br />
temperature<br />
• The fixing temperature exceeds<br />
230°C/446 °F for 40 ms.<br />
Shorted thermistor.<br />
Broken heater<br />
control circuit on<br />
the power supply<br />
board (KP-5059).<br />
Measure the resistance. If it is 0 Ω, replace<br />
the thermistor.<br />
Replace the power supply board (KP-5059)<br />
and check for correct operation.<br />
C6050<br />
Abnormally low fixing unit thermistor<br />
temperature<br />
• The fixing temperature remains below<br />
90°C/194°F for 1 s.<br />
Poor contact in<br />
the thermistor<br />
connector terminals.<br />
Check the connection of connector CN4 on<br />
the power supply board (KP-5059) and the<br />
continuity across the connector terminals.<br />
Repair or replace if necessary.<br />
Broken thermistor<br />
wire.<br />
Measure the resistance. If it is ∞ Ω, replace<br />
the thermistor.<br />
Thermistor installed<br />
incorrectly.<br />
Check and reinstall if necessary.<br />
Thermal cutout<br />
triggered.<br />
Check for continuity. If none, replace the<br />
thermal cutout.<br />
Heater lamp installed<br />
incorrectly.<br />
Check and reinstall if necessary.<br />
Broken heater<br />
lamp wire.<br />
Check for continuity. If none, replace the<br />
heater lamp.<br />
C6400<br />
Zero-crossing signal problem<br />
• The engine board (KP-5061) does not<br />
detect the zero-crossing signal for the<br />
time specified below.<br />
At power-on: 3 s<br />
Others: 5 s<br />
Poor contact in<br />
the connector terminals.<br />
Defective power<br />
supply board (KP-<br />
5059).<br />
Check the connection of connectors YC7<br />
on the engine board (KP-5061) and CN2<br />
on the power supply board (KP-5059), and<br />
the continuity across the connector terminals.<br />
Repair or replace if necessary.<br />
Check if the zero-crossing signal is output<br />
from CN2-11 on the power supply board<br />
(KP-5059). If not, replace the power supply<br />
board (KP-5059).<br />
Defective engine<br />
board (KP-5061).<br />
Replace the engine board (KP-5061) if<br />
C6400 is detected while CN2-11 on the<br />
power supply board (KP-5059) outputs the<br />
zero-crossing signal.<br />
1-5-11