Olivetti PF-650(B), Руководство по обслуживанию

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3MV
1-4-6
(5)
The side feeder lift
motor does not oper-
ate.
Poor contact of the side
feeder lift motor connector
terminals. Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Broken side feeder lift
motor coil. Check for continuity across the coil. If none, replace the feeder lift
motor.
Defective side feeder lift
motor or side feeder main
PWB. Run maintenance item U247 and measure the voltage between
side feeder main PWB terminal YC5-A12 and YC6-B11.
Each of LUSSW, UCSSW, LLSSW, and RCSSW should be turned
off.
Although 24 V DC or -24 V DC are measured, if a side feeder lift
motor does not operate, replace the side feeder lift motor.
When change of voltage is not measured, (0V), replace the side
feeder main PWB.
(6)
The side feeder drive
motor does not oper-
ate.
Poor contact of the side
feeder drive motor connec-
tor terminals. Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Broken side feeder drive
motor coil. Check for continuity across the coil. If none, replace the feeder lift
motor.
Defective side feeder drive
motor. Run maintenance item U247 and check if the side feeder drive
motor does not operate when YC4-4 on the side feeder main
PWB goes low. If so, replace the side feeder drive motor.
Defective side feeder main
PWB. Run maintenance item U247 and check if YC6-A1 on the side
feeder main PWB goes low. If not, replace the side feeder main
PWB.
Problem Causes Check procedures/corrective measures
24V DC
SFMPWB
GND
Fwd./
rev.
motor
driver
SFLM+
SFLM-
ULSSW
UCSSW
RCSSW LLSSW
YC6-B11
YC5-A12
SFLM
SFLM Wiring Diagram
C
P
U
Off
Off
Off
Off
On
On
On
On
GND
GND
24V DC
24V DC
Service Manual Y110900-
9