Epson Aculaser C9200N, Service Manual

Page: 106 / 441

EPSON AcuLaser C9200N Revision D
Troubleshooting Jam Display 106
Confidential
MISFEED AT DUPLEX TRANSPORT SECTION (DUPLEX OPTION) (D, A)
†
Detection Timing
†
Action
JAM AT DUPLEX PRE-REGISTRATION SECTION (DUPLEX UNIT) (D, A,
G)
†
Detection Timing
†
Action
Table 3-12. Detection Timing
Type Description
Detection of
misfeed at Duplex
Transport section The Duplex Unit Transport Sensor 2 (PC2) is not blocked even after the
lapse of a given period of time after the paper has blocked the Duplex Unit
Transport Sensor 1 (PC1).
The Duplex Unit Transport Sensor 1 (PC1) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
The Duplex Unit Transport Sensor 2 (PC2) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
Detection of paper
left in Duplex
Transport Section Duplex Unit Transport Sensor 1 (PC1DU) or Duplex Unit Transport
Sensor 2 (PC2DU) is blocked when the Power Switch is turned ON, a
cover is opened and closed, or a JAM or malfunction is reset.
Table 3-13. Action
Relevant Electrical Parts
†
Duplex Unit Transport Sensor 1 (PC1 DU)
†
Duplex Unit Transport Sensor 2 (PC2 DU)
†
Duplex Unit Switchback Motor (M1 DU)
†
Duplex Unit Transport Motor (M2 DU)
†
Duplex Control Board (PWB-A DU)
†
Mechanical Control Board (PWB-M)
Step Action
Connection Diagram
Control Signal
Location
(electrical parts)
1 Initial check items --- ---
2 PC1 I/O check, Sensor check --- U-18
3 PC2 I/O check, Sensor check --- U-18
4 M1 operation check PWB-A DU PJ4A DU-1 to 4 V-19
5 M2 operation check PWB-A DU PJ5A DU-1 to 4 V-19
6 Change PWB-A (p.312) --- ---
7 Change PWB-M (p.198) --- ---
Table 3-14. Detection Timing
Type Description
Detection of Misfeed at
Duplex pre-registration
section The Registration Roller Sensor (PC1) is not blocked even after the
lapse of a given period of time after a Duplex paper feed sequence
has been started.
Detection of Loop
Registration Reversing
JAM at Duplex pre-
registration section The Registration Roller Sensor (PC1) is not shaded even when the
specified period of time has passed after the Feed Roller started
rotating to re-feed paper.
Table 3-15. Action
Relevant Electrical Parts
†
Registration Roller Sensor (PC1)
†
Duplex Unit Switchback Motor (M1 DU)
†
Duplex Unit Transport Motor (M2 DU)
†
Duplex Control Board (PWB-A DU)
†
Mechanical Control Board (PWB-M)
Step Action
Connection Diagram
Control Signal
Location
(electrical parts)
1 Initial check items --- ---
2 PC1 I/O check, Sensor check --- U-18
3 M1 operation check PWB-A DU PJ4A DU-1 to 4 V-19
4 M2 operation check PWB-A DU PJ5A DU-1 to 4 V-19
5 Change PWB-A (p.312) --- ---
6 Change PWB-M (p.198) --- ---