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4040
Paper Deck Power Input Service Check
Be sure voltage is present at the outlet and the power cords are
firmly pugged into the printer and paper deck.
FRU
1
Connector
2
Power On Sig-
nal
3
Fuse
4
Overcurrent/
overvoltage
Detection Cir-
cuit
5
Power Supply
Cable, DC
6
Load and
Paper Deck
Driver Board
Action
If the power on signal is not being input, there may
be a poor connection at the interface connector.
Reconnect the interface connector.
If the power on signal is not being input:
Turn the printer power switch on. Measure the volt-
age between jumper connectors JP201-1
(PWRON-IN) and JP201-1 (GND) on the paper
deck driver board. If the value is not about 5 V,
replace the option controller card. If this does not
correct the problem, replace the controller card (19-
2).
If the fuse is blown, remove the power supply and
replace the fuse (23-24).
If the overcurrent/overvoltage detection circuit has
been activated, turn the power switch off and on. If
this does not correct the problem, investigate the
cause of the overcurrent/overvoltage detection cir-
cuit being activated. Be sure to turn the power off
for 2 minutes then turn it on again.
Turn the printer power switch
nector J203 from the paper deck driver board.
Plug the power cable into the power supply
and turn the printer power on. Then measure
the dc power supply through connector J203.
While doing this be careful not to short it. If the
correct voltage is not being output replace the
power supply (23-25).
Turn the printer power switch off, and check
the lines and dc loads from the paper deck
driver board. If there are no problems with
either of them, replace the paper deck driver
board (23-41).
off and remove con-
Diagnostic Information 2-57
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