Konica Minolta bizhub PRO 1050 Service Manual page 669

14. MALFUNCTION CODE
Classification Code
PB SC78-23 After the main CPU on the PB
abnor-
mality
SC78-24 The cover paper table up or down
SC78-25 The cover paper table up or down
SC78-26 The movement of the cover paper
SC78-27 The movement of the cover paper
SC78-28 The trimming of the cover paper
SC78-30 After the main CPU in the PB con-
SC78-31 The carriage section movement
634
2
Causes
control board (PBCB) sends a
cover paper conveyance start sig-
nal to the sub CPU, a signal to
notify the completion of the pro-
cess is not returned to the main
CPU within a specified time
period.
movement has not completed
within a specified time period after
the cover paper table up down
motor/Fr (M46) turns ON.
movement has not completed
within a specified time period after
the cover paper table up down
motor/Rr (M47) turns ON.
folding plate/Rt has not completed
within a specified time period after
the cover paper folding motor/Rt
(M48) turns ON.
folding plate/Lt has not completed
within a specified time period after
the cover paper folding motor/Lt
(M49) turns ON.
has not completed within a speci-
fied time period after the cutter
motor (M50) turns ON.
trol board (PBCB) sends a car-
riage belt driving operation start
signal to the sub CPU, a signal to
notify the completion of the pro-
cess is not returned to the main
CPU within a specified time
period.
according to paper size has not
completed after the book convey-
ance belt movement motor (M62)
turns ON.
Field Service Ver3.0 Nov.2006
Resulting Estimated abnormal parts
operation
The main body PB control board (PBCB)
and the PB stop PB drive board (PBDB)
immediately to Cover paper conveyance
turn OFF the main motor (M45)
relay (RL1).
PB control board (PBCB)
PB drive board (PBDB)
Cover paper table up down
motor /Fr (M46)
PB control board (PBCB)
PB drive board (PBDB)
Cover paper table up down
motor /Rr (M47)
PB control board (PBCB)
PB drive board (PBDB)
Cover paper folding motor /
Rt (M48)
PB control board (PBCB)
PB drive board (PBDB)
Cover paper folding motor /
Lt (M49)
PB control board (PBCB)
PB drive board (PBDB)
Cutter motor (M50)
PB control board (PBCB)
PB drive board (PBDB)
Book conveyance belt
motor (M61)
PB control board (PBCB)
PB drive board (PBDB)
Book conveyance belt
movement motor (M62)