2-6
Service Manual
4036-402
Symptoms and service checks
The tables in this section provide detailed troubleshooting information.
The power does not come on
Scan module does not move to the lock position
Cause
Relevant unit
Check *
Action
Unplugged from outlet
None
Visual check
Insert the ac plug into the outlet.
AC power unplugged at
power supply
LVPS
Visual check
Insert the ac cable into power
supply.
Power switch is OFF
None
Visual check
Turn the power switch on.
Power supply power
distribution card
connection failure
None
Visual check
Connect the connector.
Power supply output
voltage failure
LVPS
Check the LVPS
(+5V +12V, +24V,
GND)
Replace the power supply.
Power distribution card
Power distribution card
Check the power
distribution card
(+5V, GND)
Replace the failed power
distribution card.
MFD controller card
MFD controller card
None
If problem still exists, replace MFD
controller card.
* Check explains how to check the failed item. To do a visual check, observe the part. To do a tester check,
check the voltage levels of the relevant units. (See
“Connector locations” on page 4-1
.)
Cause
Relevant unit
Check
Action
Home position sensor
card failure
Flatbed optical unit
Visual check
Replace the flatbed optical unit.
Motor—main scanner
card connection failure
None
Visual check
Connect the connector.
Motor failure
Carrier motor
Visual check
Replace the flatbed optical unit.
Power supply—main
scanner card connection
failure
None
Visual check
Connect the connector.
Power supply fails.
Power supply
Tester check
(+24V, GND)
Replace the power supply.
Summary of Contents for 16C0365 - 5500 MFP
Page 49: ...Repair information 3 25 4036 402 3 Remove the pick pad ...
Page 55: ...Repair information 3 31 4036 402 5 Disconnect the cables 6 Remove the user interface ...
Page 68: ...3 44 Service Manual 4036 402 ...
Page 69: ...Connector locations 4 1 4036 402 4 Connector locations Locations Paper path and sensors ...
Page 70: ...4 2 Service Manual 4036 402 Internal view ...
Page 76: ...5 4 Service Manual 4036 402 ...
Page 78: ...6 2 Service Manual 4036 402 Assembly 1 Upper Scanner ...
Page 86: ...I 4 Service Manual 4036 402 ...