Ricoh Pro 8320 - A3 LCT Cooling Fan Error (Unit 2); LCT1: Unit Configuration Error (LCT Not Connected) (Vacuum Feed LCIT); Sc780-15; Sc780-50

1.SC Codes
587
SC780-15
Error Name
A3 LCT Cooling Fan Error (Unit 2)
Pattern
B
Error Condition
The cooling fan alarm detected an error when the A3 LCT cooling fan was turned ON.
Major Cause
 Power of downstream unit is not turned on.
 A3 LCT cooling fan defective / connector disconnected
 Harness damaged
 PCB defective
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Reconnect the connector.
2. Replace the A3 LCT cooling fan.
3. Replace the harness.
4. Replace the PCB.
SC780-50
Error Name
LCT1: Unit Configuration Error (LCT Not Connected) (Vacuum Feed LCIT)
Pattern
D
Error Condition
LCT2 is detected even though LCT1 is not installed.
Major Cause
 Power of downstream unit is not turned on.
 Interface harness on LCT1 damaged
 LCT1 DIP switch setting error
 PCB on LCT1 defective
 PSU on LCT1 defective