Ricoh D391, Service Manual

Page: 359 / 490

LED 3 LED 2 LED 1 Problem Location
OFF ON OFF Lag paper jam Tray A Lift Motor (M3 (INS))
OFF ON ON At power on Drive Switch Motor (M2 (INS))
ON OFF OFF Firmware error CPU flash memory
ON OFF ON Cover open jam Top cover
ON ON OFF Paper size mismatch Paper tray fences on Tray A, B
(c) Sensor where jam detected
One or more LED goes ON for 0.5 sec, then OFF for 0.25 sec.
The combination of which LEDs go ON/OFF which sensor and component was affected.
LED
3
LED 2 LED 1 Sensor Component
OFF OFF ON Tray A Registration Sensor (S5 (INS)) Tray A Lift Motor (M3 (INS))
OFF ON OFF Tray B Registration Sensor (S13 (INS)) Tray A Lift Motor (M3 (INS))
OFF ON ON Transport Sensor 1 (S14 (INS)) Drive Switch Motor (M2 (INS))
ON OFF OFF --- CPU flash memory
ON OFF ON Transport Sensor 2 (S18 (INS)) ---
ON ON OFF Paper width sensors ---
(d) Refresh and return to (a9
All LEDS light for 0.75 sec, all go off for 0.75 sec. then the display loops to (a).
Inserter Motor, Clutch Output Check
To check start/top operation of each motor
1. Open the left door.
2. Insert piece of cardboard or folded piece of paper into the slot of the left door switch.
If the right door has been removed, insert piece of cardboard or folded piece of paper into the slot
of the left door switch.
Output Checks
357
4