Konica Minolta REGIUS 190 Service Manual page 160

•
Analysis Procedure of Power Failure (unable to turn on the device)
If the device cannot be started up even the operation button is pressed down, search the cause and take neces-
sary action according to the following procedures.
1.
Plug the power cable into the power outlet, and check
AC100 is output at the other end of the power cable.
• If AC100 is not detected, the power cable is broken.
2.
Turn on the power breaker, and check that AC100V is out-
put between the 1-3pin(black-white) of the TAP PCB con-
nector (CN1). (refer to fig A in the right)
• If AC100V is not detected, any of AC inlet (JP1), power
breaker (CB1) or noise filter (NF1) is faulty.
3.
Check that AC100V is output at the 1-4pin of the TAP PCB
connector (CN2) while the operation button is pressed
down. (refer to fig A in the right)
• If AC100V is not output, the TAP PCB is faulty.
Im p o r t a n t AC100V will not be output while the opera-
tion button is not pressed down.
4.
Check that AC107V is output at the connector (JJ10, JJ25)
of the transformer (PT1) while the operation button is
pressed down. (refer to fig B in the right)
• If not output, the transformer (PT1) is faulty.
I m p or t a n t AC107V will not be output while the opera-
tion button is not pressed down.
5.
Check that DC24V is output between 2, 3-4, 5, 6pin (black-
yellow) of the SUP1(5V/24V DC power supply) connector
(CN3) while the operation button is pressed down. (refer to
fig C in the right)
• If not output, the SUP1(5V/24V DC power supply) is
faulty.
I m p o r t a n t DC24V will not be output while the opera-
tion button is not pressed down.
6.
If all of 1 through 5 are proved to be normal, MCB2
(Mechanical Control Board) may be faulty.
4.1 Troubleshooting for Electrical Control & Communication
C
CN3
B
JJ25
A
CN1
REGIUS MODEL 190 Service Manual Ver.1.00 2004.11.01
SUP1
JJ10
PT1
PT1
TAPBoard
CN2
AC Inlet
Noise Filter
Power Breaker
133