Chapter 17 Troubleshooting; Solutions When Trouble Occurs; The Drypro 832 Main Unit Will Not Start - Konica Minolta drypro 832 Service Manual

Chapter 17 Troubleshooting

17.1 Solutions When Trouble Occurs

If trouble occurs in the DRYPRO 832 main unit, use the solutions shown in the table below.

17.1.1 The DRYPRO 832 main unit will not start

Phenomenon
When the power
source breaker is
turned ON, it returns
to OFF
Even if the main
power supply is on
and the operation
switch is pressed, the
LCD on the operation
panel is not displayed
17-2
Parts to check
The power source Short circuit in the AC line
breaker protection
has activated
Bad connection A power cable (on the equipment
or wall socket) is not plugged in
Broken wire in the The power cable has a broken
power cable wire
Power is not being There is a fault on the main
supplied from the power supply side or UPS
main power supply
or UPS
STBY 5V is not Power fault or MEC fault
being output
Defective operation Operation switch fault, or broken
of the operation wire in the cable
switch
Defective operation Faulty LCD board, broken wire
of LCD board in the cable, disconnected
connector, short circuit
Cause
Disconnect the power cable, then check
the conductance between TP1-TP2, TP1-
TP5, TP2-TP5.
If there is no conductance, replace the
power source breaker.
If there is conductance, replace the noise
filter, multiple power supply, power Assy,
noise filter Assy, and CB1 Assy.
Visually inspect how well the main power
supply side and equipment side cables are
inserted.
Remove the power cable from the
equipment, and check the power cable
conductance with a tester.
Replace the power cable if a broken wire
is found.
Check the output voltage of the main
power supply or UPS with a tester.
If there is no voltage output from the
main power supply or UPS, request
repairs from the facility owner.
Measure the multi power ACN5 5 pins as
+ and 6 pins as - with a tester, and check
that 5V is being output.
If 5V is not output, replace the multi
power and MEC power Assy. If this does
not resolve the problem, replace the MEC
board.
Check the connection of the densitometer
relay Assy, and if there are no problems,
remove MCN13 from the MEC board,
and check the conductance between the
MCN13 No.1 pin-No.2 pin while the
operation switch is pressed down.
If there is no conductance, replace the
operation switch board and densitometer
relay Assy.
Check the connection of the LCD relay
Assy, and if there are no problems,
replace the LCD board and LCD relay
Assy.
Solution