View Full Version : Dead Machine bizhub 1050 can not power up

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06-19-2014, 01:43 AM
When main power switch turns on.Lcd backlight is off.dc controller is of.red led on panel is on.red led on overal control bord is on.but machine is completely off and can not drive!
Help for that dead machine! :(

06-20-2014, 12:16 AM
a pic from back of machine when main power is on 25390

06-20-2014, 01:22 AM
thanks for your useful solution! :\

06-20-2014, 02:03 PM
Paul's offer for a service manual is a lot more useful than your picture of the back of the machine, and don't PM me anymore, if I had an answer I'd have posted it for you. Emujo

06-21-2014, 10:04 AM
i posted that pic to give better info to my question.
all active solution and field service manual that i have did not helped me.
excuse me for my pm emujo :)

06-25-2014, 06:50 PM
Product Name

bizhub PRO 1050e
bizhub PRO 1050eP
bizhub PRO 1050
bizhub PRO 1050P



No power, blank display.


CAUSE: DC Power Supply 1 (DCPS1) has failed.

SOLUTION: To confirm that DC Power Supply 1 has failed, perform the following:
1. With the main and sub switches in the ON position, measure the AC voltage input to DCPS1 at CN2-1 and 2-3 by inserting one meter lead into pin 1 and the other lead into pin 3 with the meter set on AC voltage. The reading should be 208-230V AC.
2. With the meter set on DC voltage, check CN72-1 for 5V DC and CN74-1 for 24V DC.
3. If one or both of the DC voltages are missing, replace DCPS1 (p/n 56UA84512E).

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