Diagnostic information
2-39
Fuser service check
Step
Questions / actions
Yes
No
1
Some low-voltage power supply FRUs have a
voltage selector switch. If it does, the switch
needs to be set to the correct voltage for your
area
Has the LVPS been changed?
Check the switch on the
side of the LVPS to verify
the correct voltage is set.
Go to step 2.
2
Turn the printer off, and remove the rear
shield. See
. Check the cable at JFUSES1 for
proper connection to the controller board, the
cable for pinch points, and the cable or
connector for any other damage.
Is the cable damaged?
Replace the fuser cable.
Go to step 3.
3
Check the connector JLVPS1 for proper
connection to the controller board, the cable
for pinch points, and the cable or connector for
any other damage.
Is the cable damaged?
Repair or replace the LVPS
cable. See
power supply (LVPS)
assembly” on page 4-43
.
Go to step 4.
4
Check the power cable on the left side of the
fuser and the thermistor cables and
connections on the right side of the fuser.
Are the cables or connectors damaged?
Repair the cables. If the
cables cannot be repaired,
replaced the fuser. See
“Fuser assembly
removal” on page 4-25
Go to step 5.
5
Disconnect the cable at JFUSES1 on the
controller board, and check the following
voltages:
Are the values approximately correct?
Go to step 6.
Replace the controller
board. See
JFUSES1
Pin
Value
1
+24 V dc (doors closed)
2
+24 V dc (doors closed)
3
+24 V dc (doors closed)
4
+24 V dc (doors closed)
5
Between 0.6 and 3.28 V dc
6
Ground
8
Ground
10
Between -3 and +3.3 V dc
11
Ground (no wire
Y112730-2
Summary of Contents for d-Color MF920
Page 1: ...SERVICE MANUAL Copiatrici Copiers d Color MF920 d Color MF923 Code Y112730 2...
Page 10: ...x Service Manual Y112730 2...
Page 15: ...Notices and safety information xv Y112730 2...
Page 16: ...xvi Service Manual Y112730 2...
Page 18: ...xviii Service Manual Y112730 2...
Page 22: ...xxii Service Manual Y112730 2...
Page 124: ...2 80 Service Manual Y112730 2...
Page 198: ...3 74 Service Manual Y112730 2...
Page 302: ...4 104 Service Manual Y112730 2...
Page 305: ...Locations 5 3 Interior view Y112730 2...
Page 306: ...5 4 Service Manual Printer boards Controller Board Y112730 2...
Page 317: ...Locations 5 15 HVPS Y112730 2...
Page 319: ...Locations 5 17 LVPS Y112730 2...
Page 324: ...6 2 Service Manual Y112730 2...
Page 331: ...Index I 7 Y112730 2...
Page 332: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 09 2010 1ST EDITION 332 Y112730 2...