EPSON AcuLaser C1100 Revision B
DISASSEMBLY AND ASSEMBLY ELEC 411
4.11.9  CHASSIS ASSY ESS (REFERENCE ONLY)
REMOVAL
1. Remove COVER ASSY LH. (p.295)
2. Disconnect all connectors from the PWBA ESS.
3. Remove disconnected connectors from the hole on CHASSIS ESS.
4. Unclamp the clamp on CHASSIS ASSY ESS, and remove the harness.
5. Remove the 5 screws (silver, with flange, 6 mm) fastening CHASSIS ASSY ESS 
to the main unit.
6. Remove CHASSIS ASSY ESS from the main unit. 
REINSTALLATION
1. Matched the protrusion on CHASSIS ASSY ESS with the hole on the main unit, 
and attach CHASSIS ASSY ESS.
2. Fasten CHASSIS ASSY ESS to the main unit with the 5 screws (silver, with 
flange, 6 mm). 
3. Insert disconnected connectors from the hole on CHASSIS ESS.
4. Connect all connectors to the PWBA ESS.
5. Fasten the harness with the clamp on CHASSIS ASSY ESS.
6. Attach COVER ASSY LH. (p.295)
Figure 4-114.  Removal of CHASSIS ASSY ESS
C A U T I O N
Avoid staticky places such as on a carpet especially when removing 
or inserting a Board.  Before starting work with the Board, make 
sure to touch metallic portion of the printer connected to the earth 
to let your body come out free of static electricity. 
C A U T I O N
When performing the following work, take care to prevent the 
harness from being sandwiched between the main unit and 
CHASSIS ESS.
Table 4-11.  Symptoms when the connector is loose
Connector 
No.
Panel Indication Symptom
Error Caused by Connector 
Disconnection
CN405 ---
Printing is not 
possible.
---
CN501 ---
Printing is not 
possible.
---
CN502 ---
Paper is ejected 
without printing.
---
CN601 ---
Printing is not 
possible.
---
Leg_Sec03_114EB
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