Ricoh MP C6502SP Field Service Manual page 1146

5. Troubleshooting
SC No.
SC555
RTB 49
SC555-00
SC No.
SC557-00
1144
Level Error Name/Error Condition/Major Cause/Solution
Heater 2: Heater Continuously On (Sensor 4: Thermopile: Pressure Roller
Center)
Target temperature was not reached (t7) seconds after reload.
Time elapsed after reload (excluding paper transport time) (t8)
D135 (Japan): t7 = 90, t8 = 90
D136 (Japan)/D135 (NA): t7 = 90, t8 = 90
D136 (NA)/D135 (EU)/D136(EU): t7 = 90, t8 = 90
D137 (Japan): t7 = 90, t8 = 90
D138 (Japan)/D137 (NA)/D138 (NA)/D137 (EU)/D138 (EU): t7 =
90, t8 = 90
A
Monitored at: All times, though SC is not issued when temperature is not
controlled (when in off mode/sleep mode, when a door, excluding the
toner supply door, is open, or when the heater relay is off).
• Thermopile detection error
• Heater disconnection
• Overheating prevention device worked.
• Replace the thermopile.
• Replace the heater.
• Replace the unit.
Level Error Name/Error Condition/Major Cause/Solution
Zero Cross Error (high frequency)
-
Details:
C
The SC code is logged and the operation of the machine is not affected.
• Unstable commercial power supply frequency
No action required.