A break (low) signal was received from the
finisher.
• BICU board and finisher main board
connection defective or loose
• Finisher main board defective
• BICU board defective
623
D
Communication timeout error between
BICU and paper tray unit
• Serial line connecting BICU and pa-
per tray unit unstable
• External noise
• BICU board and paper tray main
board connection defective or loose
• Paper tray main board defective
• BICU board defective
The BICU cannot receive a response within
100 ms after 3 attempts after sending data
to the paper tray unit.
624
D
Communication break error between BICU
and paper tray unit
• Serial line connecting BICU and pa-
per tray unit unstable
• External noise
• BICU board and paper tray unit con-
nection defective
• Optional paper tray unit interface
board defective
• BICU board defective
The BICU cannot communicate with the pa-
per tray unit due to receiving a break signal.
626
D
Communication timeout error between
BICU and LCT
• Serial line connecting BICU and LCT
unit unstable
• External noise
• BICU board and LCT main board
connection defective or loose
• LCT interface board defective
• BICU board defective
The BICU cannot receive a response within
100 ms after 3 attempts after attempting to
communicate with the LCT.
627
D
Communication break error between BICU
and LCT
• Serial line connecting BICU and LCT
unit unstable
• External noise
• BICU board and LCT main board
connection defective or loose
The BICU cannot communicate with the LCT
unit due to receiving a break signal.
Service Call Conditions
159
4
Summary of Contents for A-P4
Page 1: ...Model A P4 Machine Code G147 SERVICE MANUAL May 12th 2006 Subject to change...
Page 27: ...Installation Flowchart 1 Installation 26 1...
Page 59: ...3 Reattach the application cover x1 1 Installation 58 1...
Page 65: ...2 Preventive Maintenance 64 2...
Page 72: ...Left Covers 1 Left upper cover A x4 2 Controller cover B x2 Covers and Common Procedures 71 3...
Page 82: ...Laser Unit 81 3...
Page 103: ...5 Cover C x2 6 Gear D x1 7 Lower paper feed unit E x2 x1 3 Replacement and Adjustment 102 3...
Page 128: ...Duplex Unit Duplex Cover Removal 1 Duplex unit cover A x4 Duplex Unit 127 3...
Page 181: ...4 Troubleshooting 180 4...
Page 289: ...Self Diagnostic Test Flow 5 Service Tables 288 5...
Page 306: ...Controller Block Diagram Board Layout 305 6...
Page 319: ...What Happens When a New Unit Is Detected 6 Details 318 6...
Page 367: ...6 Details 366 6...
Page 379: ...MEMO 378...
Page 380: ...MEMO 379...
Page 381: ...MEMO 380...