FrameMaker Ver.5.5(PC) Di251/Di351 TROUBLESHOOTING
05.03.01
T-46
(8)
The Copier Does not Turn ON.
• Touch Panel indicates nothing.
Relevant Electrical Parts
Power Switch S1
Power Supply Unit PU1
Panel Board PWB-F
Inverter Board 2 PU3
Touch Panel UN1
MFB2 Board MFB2
Master Board PWB-A
Step
Check
Result
Action
1
Power supply voltage check: the voltage across
PJ1PU1-1 and -3 of Power Supply Unit
changes from AC 0 V to the rated AC voltage
when the Power Switch is turned ON.
NO
Check the power outlet
voltage.
Check the power cord for
continuity.
Check Power Switch.
2
The voltage across PJ5S1-1 on Power Switch
and GND is DC20 V or more when Power
Switch is turned ON.
YES
Change Master Board.
3
DC24-V output check: the voltage across
PJ8PU1-2 on Power Supply Unit and GND
changes from DC0 V to DC24 V when the
Power Switch is turned ON.
NO
Change Power Supply
Unit.
4
DC5-V output check: the voltage across
PJ6PU1-6 on Power Supply Unit and GND
changes from DC0 V to DC5 V when the Power
Switch is turned ON.
NO
Change Power Supply
Unit.
5
DC24-V output check:
Unplug CN1F on Panel Board.
The voltage across CN1F-1 on cable end and
GND, and the voltage across CN1F-2 on cable
end and GND, change from DC0 V to DC24 V
when the Power Switch is turned ON.
NO
Change MFB2 Board.
6
DC5-V output check:
Unplug CN1F on Panel Board.
The voltage across CN1F-28 on cable end and
GND, and the voltage across CN1F-29 on
cable end and GND, change from DC0 V to
DC5 V when the Power Switch is turned ON.
NO
Change MFB2 Board.
7
DC24-V output check: the voltage across
CN7F-1 on Panel Board and GND changes
from DC0 V to DC24 V when the Power Switch
is turned ON.
NO
Change Panel Board.
8
AC output check: there is an AC output across
CN2PU3-1 and 4 on Inverter Board 2 when the
Power Switch is turned ON.
YES
Change Touch Panel.
NO
Change Inverter Board 2.
Summary of Contents for Di251
Page 1: ...Di251 Di351 SERVICE MANUAL GENERAL 4011 7990 11 ...
Page 2: ...INDEX GENERAL GENERAL MECHANICAL ELECTRICAL ...
Page 3: ...GENERAL ...
Page 18: ...MECHANICAL ELECTRICAL ...
Page 24: ...M 4 3 DRIVE SYSTEM 1 Scanner Motor M10 2 Main Motor M2 3 I C Motor M1 1 3 2 4011M002AA ...
Page 71: ...Di251 Di351 SERVICE MANUAL FIELD SERVICE 4011 7991 11 ...
Page 83: ...Di251 Di351 Allgemein Mechanik Elektrik Rev 1 1 0 03 01 I 1 INSTALLATION 3 ...
Page 88: ...Di251 DI351 Rev 1 1 0 03 01 I 6 ...
Page 93: ...I 5 Di251 Di351 Rev 11 0 0 03 01 10 Grounding plate screws 3 1 2 3 4 5 6 7 8 9 10 ...
Page 99: ...I 11 Di251 Di351 Rev 11 0 0 03 01 6 Fit the Exit Tray 7 Close the Finisher Cover ...
Page 178: ...I 90 Di251 Di351 Rev 1 1 0 0 03 01 ...
Page 179: ...DIS REASSEMBLY ADJUSTMENT 10230 ...
Page 241: ...SWITCHES ON PWBs TECH REP SETTINGS 17196 ...
Page 296: ...TROUBLESHOOTING 14413 ...