15. Power supply trouble
Field Service Ver. 1.0 May 2006
210
magicolor 7450
T
roubleshooting
15. Power supply trouble
15.1 Machine is not Energized at All (PU1 Operation Check)
Relevant Electrical Parts
Main Power Switch (S1)
Mechanical Control Board (PWB-M)
DC Power Supply (PU1)
Step
Check Item
WIRING
DIAGRAM
(Location)
Result
Action
1
Is a power voltage supplied across
CN1PU1-1 and 2 on PU1?
S to T-2
NO
Check the WIRING from
the wall outlet to S1
CN1PU1.
2
Are the fuses on PU1 conducting ?
—
NO
Change PU1.
3
Is DC3.3 V being output from CN6PU1-1 on
PU1?
R-4
NO
Change PU1.
4
Is “Low” being output from CN7PU1-2 on
PU1?
R-5
NO
Check the WIRING from
the PWB-P to PWB-M to
CN1PU1.
5
Is DC24 V being output from CN5PU1-2 on
PU1?
R-6
NO
Change PU1.
6
Is DC5 V being input to CN5PU1-3 on PU1?
R-4
NO
Change PU1.
5
Is DC5 V being input to CNPOW-2 on the
Control Board? (LED on PWB-M does not
blink.)
I-6
NO
Change PU1.
YES
Change PWB-M
Содержание magicolor 7450
Страница 1: ...SERVICE MANUAL 2006 05 2006 05 Ver 1 0 Ver 1 0 FIELD SERVICE magicolor 7450 magicolor 7450 ...
Страница 3: ...ii Blank Page ...
Страница 26: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Main Unit magicolor 7450 magicolor 7450 ...
Страница 43: ...2 Product specifications Field Service Ver 1 0 May 2006 6 magicolor 7450 General Blank Page ...
Страница 288: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Lower Feeder Unit ...
Страница 293: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Lower Feeder Unit General Blank Page ...
Страница 317: ...3 Other Field Service Ver 1 0 May 2006 26 Lower Feeder Unit Maintenance Blank Page ...
Страница 321: ...5 Sensor check Field Service Ver 1 0 May 2006 30 Lower Feeder Unit Adjustment Setting Blank Page ...
Страница 328: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Duplex Option ...
Страница 331: ...Duplex Option General Maintenance Adjustment Setting Troubleshooting Field Service Ver 1 0 May 2006 ii Blank Page ...
Страница 333: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Duplex Option General Blank Page ...
Страница 345: ...6 Jam Display Field Service Ver 1 0 May 2006 14 Duplex Option Troubleshooting Blank Page ...