Power Source-Related Malfunctions; The Copier Does Not Turn On - Konica Minolta Di1611 Service Manual

TROUBLESHOOTING
3.5

Power Source-Related Malfunctions

(1)

The copier does not turn ON.

Step
1 A malfunction code appears when the
Power Switch is turned ON.
2 The malfunction is temporarily reset
when the Power Switch is turned OFF
and ON with the Stop key held down.
3 Power supply voltage check
<Check Procedure>
Check voltage across pins of DC Power
Supply (PU1) when the Power Switch is
turned ON.
• Voltage across CN1PU1-1 and
CN1PU1-2
AC0 V when the Power Switch is OFF
Rated AC voltage when the Power
Switch is turned ON
4 Check of output of DC24 V to Control
Board (copier: PWB-C)
<Check Procedure>
Check voltage across a Control Board
(copier: PWB-C) pin and GND when the
Power Switch is turned ON.
• Voltage across P110C/C-1 and GND
• Voltage across P110C/C-2 and GND
DC0 V when the Power Switch is OFF
DC24 V when the Power Switch is
turned ON
5 Check of output of DC24 V to Master
Board (copier: PWB-A)
<Check Procedure>
Check voltage across a Master Board
(copier: PWB-A) pin and GND when the
Power Switch is turned ON.
• Voltage across PJ2A-2 and GND
DC0 V when the Power Switch is OFF
DC24 V when the Power Switch is
turned ON
Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004
Check
3-38
Result Action
YES • Go to step 2.
NO • Go to step 3.
YES • Perform the troubleshoot-
ing procedure according
to the malfunction code.
NO • Check wall outlet for volt-
age.
• Check power cord for
continuity.
• Check Power Switch.
NO • Check Front Door Inter-
lock Switch (S3).
• Check Right Door Inter-
lock Switch (S4).
• Change DC power Sup-
ply (PU1).
NO • Check Front Door Inter-
lock Switch (S3).
• Check Right Door Inter-
lock Switch (S4).
• Change DC power Sup-
ply (PU1).