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Chapter 1 Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
23
Checking the HARN ASSY L SIDE for continuity
Disconnect J23 from the PWBA MCU.
Disconnect P231 from the SOLENOID FEED MSI.
Is each cable of J23 <=> P231 continuous?
Go to step 24.
Replace the
HARN ASSY L
SIDE.
24
Checking the power to the SOLENOID FEED MSI
Disconnect J23 from the PWBA MCU.
Is the voltage across P23-1pin <=> ground on the PWBA
MCU, about +24 VDC when the Interlock Switch (HARN
ASSY INTERLOCK) is pushed?
Go to step 25.
Replace the
PWBA MCU.
(Refer to RRP8.9.)
25
Checking the SOLENOID FEED MSI for resistance.
Disconnect P/J231 of the SOLENOID FEED MSI.
Is the resistance across J231-1 and J231-2 about 96 ohm?
Replace the
PWBA MCU.
(Refer to RRP8.9.)
Replace the
SOLENOID FEED
MSI. (Refer to
RRP3.3.)
26
Checking the connectors of the SENSOR PHOTO (Regi
Sensor) for connection.
Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J232 connected correctly?
Go to step 27.
Reconnect the
connector(s) P/
J23 and/or P/J232
correctly.
27
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
Disconnect J232 from the SENSOR PHOTO.
Is each cable of J23 <=> J232 continuous?
Go to step 28.
Replace the
HARN ASSY L
SIDE.
28
Checking the power to the SENSOR PHOTO.
Disconnect J23 from the PWBA MCU.
Is the voltage across P23-3pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Go to step 29.
Replace the
PWBA MCU.
(Refer to RRP8.9.)
29
Checking the SENSOR PHOTO for operation.
Check the voltage across J23-5pin <=> ground on the
PWBA MCU.
Remove the CHUTE ASSY LOW (PL3.2.27) once to check
the operation.
Does the voltage change, when the actuator (ACTUATOR
REGI IN) is operated?
Replace the
PWBA MCU.
(Refer to RRP8.9.)
Replace the
SENSOR
PHOTO:REGI.
(Refer to RRP3.8.)
Step
Check
Remedy
Yes
No
Summary of Contents for AcuLaser C2900N
Page 12: ...Confidential CHAPTER 1 Troubleshooting ...
Page 202: ...Confidential CHAPTER 2 Operation of Diagnostic ...
Page 253: ...Confidential CHAPTER 3 Removal and Replacement Procedures ...
Page 497: ...Confidential CHAPTER 4 Plug Jack P J Connector Locations ...
Page 508: ...Confidential CHAPTER 5 Parts List ...
Page 555: ...Confidential CHAPTER 6 Principles of Operation ...
Page 630: ...Confidential CHAPTER 7 Wiring Diagrams and Signal Information ...
Page 660: ...Confidential CHAPTER 8 Product Specifications ...
Page 674: ...8 13 Chapter 8 Product Specifications Epson AcuLaser C2900N Revision B Confidential ...