Ricoh MP C6502SP Field Service Manual page 1145

SC No. Level
SC553-00 A
SC No. Level
SC554-00 A
Error Name/Error Condition/Major Cause/Solution
Sensor 4: Pressure Roller Center: Overheat detection (software)
(T3) degrees centigrade or higher was detected for (t6) seconds
consecutively.
Number of times: 10 or more
D135 (Japan):T3 = 220, t6 = 1
D136 (Japan)/D135 (NA): T3 = 220, t6 = 1
D136 (NA)/D135 (EU)/D136(EU): T3 = 220, t6 = 1
D137 (Japan): T3 = 220, t6 = 1
D138 (Japan)/D137 (NA)/D138 (NA)/D137 (EU)/D138 (EU): T3 =
220, t6 = 1
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).
• Triac shorted.
• IOB board defective.
• Replace the IOB board.
• Replace the unit.
Error Name/Error Condition/Major Cause/Solution
Pressure Roller Center: Overheat detection (hardware)
Hardware detection of overheat condition.
The pressure roller center thermopile was detected as the cause.
• IOB defective
• Fuser control software running out of control
• Triac damaged (shorted).
• Pressure roller center thermopile defective
• After removing the cause of the SC, Set "Fusing SC Clear" in the SP
mode.
• If necessary, replace: IOB/pressure roller center thermopile/AC
drive.
Service Call 501-595
1143