Minolta Di251 Service Manual page 340

C0990
Step
1 The voltage across CN1A-15 on LCC Control
Board and GND is DC24 V.
2 Fuse is conducting.
C0991
Step
1 Lift-Up Sensor 1 operation check through I/O
check
2 Lift-Up Sensor 1 operation check: the voltage
across CN4A-6 on LCC Control Board and
GND is DC5 V when the sensor is blocked and
DC0 V when the sensor is unblocked.
3 LCC Lift-Up Motor operation check: LCC Lift-
Up Motor turns after the cassette has been slid
into the copier.
4 LCC Lift-Up Motor operation check: the voltage
across CN5A-1 on LCC Control Board and
GND changes from DC0 V to DC24 V while
step 3 is being performed.
C0995
Step
1 The voltage across CN1A-15 on LCC Control
Board and GND is DC24 V.
2 Fuse is conducting.
Check
Check
Check
T-42
Result Action
YES Change LCC Lift-Up
Motor.
Change LCC Control
Board.
Change Control Board.
Change Master Board.
YES Change Power Supply
Unit.
NO Change fuse.
Result Action
YES Check step 3 and onward.
YES Change LCC Control
Board.
Change Control Board.
Change Master Board.
NO Check actuator.
Change Lift-Up Sensor 1.
YES Change Master Board.
YES Change LCC Lift-Up
Motor.
NO Change LCC Control
Board.
Change Control Board.
Change Master Board.
Result Action
YES Change LCC Transport
Motor.
Change LCC Control
Board.
Change Control Board.
Change Master Board.
YES Change Power Supply
Unit.
NO Change fuse.