Konica Minolta bizhub C658 Service Manual page 1504

bizhub C658/C558/C458/C368/C308/C258
Trouble detection condition
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the connector between M6-relay CN118-DFCB CN4 for proper connection and correct as necessary.
2. Check the connector of M6 for proper drive coupling and correct as necessary.
3. Check the connector between PS6-relay CN120-DFCB CN11 for proper connection and correct as necessary.
4. PS6 I/O check, sensor check
• Control signal: DFCB CN11-2 (ON)
• Location of electrical component: DF 1-C
5. M6 operation check
• Control signal: DFCB CN4-1 to 2
• Location of electrical component: DF 10-C
6. Replace M6.
7. DFCB ICP9 conduction check.
8. Replace DFCB.
NOTICE
• Link to the wiring diagram (
3.20.2 C8103 (bizhub C658/C558/C458)
(1) Contents
Trouble type
Rank
Trouble detection condition The lift up upper sensor (PS2) is not turned ON (unblocked) after a lapse of a given time after the lift-up motor
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the connector between M5-DFCB CN9 for proper connection and correct as necessary.
2. Check the connector of M5 for proper drive coupling and correct as necessary.
3. Check the connector between PS2-DFCB CN6 for proper connection and correct as necessary.
4. PS2 I/O check, sensor check
• Control signal: DFCB CN6-3 (ON)
• Location of electrical component: DF 7-I
5. M5 operation check
• Control signal: DFCB CN9-1 to 5
• Location of electrical component: DF 5-C
6. Replace M5.
7. DFCB ICP5 conduction check.
8. Replace DFCB.
NOTICE
• Link to the wiring diagram (
3.20.3 C8106 (bizhub C658/C558/C458)
(1) Contents
Trouble type
Rank
Trouble detection condition The lift up lower sensor (PS3) is not turned ON (unblocked) after a lapse of a given time after the lift-up motor
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the connector between M5-DFCB CN9 for proper connection and correct as necessary.
2. Check the connector of M5 for proper drive coupling and correct as necessary.
3. Check the connector between PS3-DFCB CN10 for proper connection and correct as necessary.
4. PS3 I/O check, sensor check
• Control signal: DFCB CN10-3 (ON)
• Location of electrical component: DF 10-C
• During a pressure motion being performed, the before read sensor (PS6) output does not change from H to
L.
• During a retraction motion being performed, the before read sensor (PS6) output does not change from L to
H.
DF
• Reading roller pressure/retraction motor (M6)
• Before read sensor (PS6)
• DF control board (DFCB)
N.3 Dual scan document feeder)
C8103: Lift up mechanism trouble (Upward movement)
B
(M5) moves up (is turned forward).
DF
• Lift-up motor (M5)
• Lift up upper sensor (PS2)
• DF control board (DFCB)
N.3 Dual scan document feeder)
C8106: Lift up mechanism failure (Downward movement)
B
(M5) goes down (is turned backward).
DF
• Lift-up motor (M5)
• Lift up lower sensor (PS3)
• DF control board (DFCB)
K TROUBLESHOOTING > 3. TROUBLE CODE
K-176