May 2013
2-599
Xerox® WorkCentre® 5790 Family
OF3
Status Indicator RAPs
Install a new HVPS PWB,
PL 1.10 Item 5
. Again perform the IOT PWB check to ensure
that the HVPS is now good.
CR12
is lit.
Y
N
There is a short circuit on the +12V output from the IOT PWB. Refer to the circuit dia-
grams in the
01F
+12V Distribution RAP to locate and repair the short circuit. Again per-
form the IOT PWB check to ensure that the IOT PWB is now good.
CR36
is the only led that is lit.
Y
N
Install a new IOT PWB,
PL 1.10 Item 2
. Again perform the IOT PWB check to ensure that
the IOT PWB is good.
There is a short circuit on the +3.3V or the +5V output from the IOT PWB.
•
Refer to the circuit diagrams in the
01D
+3.3V Distribution RAP. Also refer to the
01H
Short Circuit and Overload RAP to locate and repair the short circuit. Again perform the
IOT PWB check to ensure that the IOT PWB is now good.
•
Refer to the circuit diagrams in the
01E
+5V Distribution RAP. Also refer to the
01H
Short
Circuit and Overload RAP to locate and repair the short circuit. Again perform the IOT
PWB check to ensure that the IOT PWB is now good.
LVPS Test Box is Not Available
Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to
GP 14
. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
WARNING
Only use the correct plug to connect a power lead to a power outlet.
CAUTION
Incorrect voltage may damage the machine. The machine must only be connected to the
power outlet of the correct voltage.
Check that there is a good AC neutral, AC live and ground supply at the customers AC supply
point and at the machine end of the main power cord. Also check that the main power cord is
securely connected at both ends. Refer to
GP 22
Electrical Power Requirements. If necessary
install a new main power cord,
PL 1.10 Item 10
. Remove the rear cover and connect the
power cord. As soon as the power cord is connected the +3.3V standby LED CR36 should
light,
Figure 2
. CR36 on the IOT PWB is lit.
Y
N
Check for a blown fuse in the LVPS. Disconnect the power cord from the machine, mea-
sure the resistance between the AC live pin and the AC neutral pin on the receptacle
where the power cord connects to the LVPS and base module,
Figure 1
. Between 0.250
and 0.750 M Ohms is measured.
Y
N
A resistance reading of 1 M Ohms or greater indicates that the fuse in the LVPS has
blown by a short in the fuser module. Install new parts:
•
Fuser Module (35-55 ppm),
PL 10.8 Item 1
•
Fuser module (65-90 ppm),
PL 10.10 Item 1
•
LVPS and base module,
PL 1.10 Item 3
Disconnect
P/J27
on the IOT PWB,
Figure 2
. On the IOT PWB less than 100 Ohms is
measured between J27 pin 6 and the machine frame.
Y
N
Install a new IOT PWB,
PL 1.10 Item 2
.
Install a new LVPS and base module,
PL 1.10 Item 3
.
Disconnect
P/J5
on the IOT PWB. Using a small metal screwdriver or metal paperclip, short
between pins 19 and 20 (pin 19 is the top right most pin, pin 20 is the bottom right most pin).
The power supply remains off (dead).
Y
N
The LVPS is on (IOT PWB LEDs
CR12
,
CR13
,
CR14
and
CR15
are lit, also the LVPS
fan is running) and all stay on. The on/off switch or wiring is defective. Go to the
01J
Power On and LVPS Control Signals RAP to identify and fix the problem.
Disconnect the power cord. Disconnect all P/Js on the IOT PWB, except for
P/J26
and
P/J27
.
Remove the waste toner bottle,
PL 9.10 Item 1
and waste toner door,
PL 9.10 Item 3
. Discon-
nect
P/J16
,
P/J17
,
P/J18
,
P/J19
and
P/J25
on the right end of the LVPS. Connect the power
cord. Using a small metal screwdriver or metal paperclip, short between pins 19 and 20 (pin 19
is the top right most pin, pin 20 is the bottom right most pin).
NOTE:
CR16 (+24V)
, will not illuminate now because the +12V interlock circuit is open circuit
with
P/J16
and
P/J17
disconnected.
The LVPS is on (IOT PWB LEDs
CR12
,
CR13
,
CR14
and
CR15
are lit, also the LVPS fan
is running) and all stay on.
Y
N
Disconnect the power cord. Disconnect
P/J26
and
P/J27
on the IOT PWB. Measure the
resistance between the machine frame ground point,
Figure 1
and
P/J27
pins 1 to 8 (top
row), also
P/J26
pins 1 to 10. Greater than 100 Ohms is measured on all pins.
Y
N
Install a new IOT PWB,
PL 1.10 Item 2
.
Install a new LVPS and base module,
PL 1.10 Item 3
. If the problem continues, install a
new IOT PWB,
PL 1.10 Item 2
.
This indicates that the LVPS itself is good, but that there is a short circuit on one of the +3.3V or
+5V circuits that were connected to the LVPS. Disconnect the power cord, reconnect
P/J5
,
and the power cord, then press the on/off switch. The LVPS is on (IOT PWB LEDs
CR12
,
CR13
,
CR14
and
CR15
are lit, also the LVPS fan is running) and all stay on.
Y
N
This indicates that there is a short circuit on one of the +3.3V or +5V circuits connected to
P/J5
. Go to the
01D
+3.3V Distribution RAP and the
01E
+5V Distribution RAP to trouble-
shoot and repair the cause of the +3.3V or +5V short circuit.
Disconnect the power cord. Reconnect
P/J16
. Reconnect the power cord and then press the
on/off switch. The LVPS is on (IOT PWB LEDs
CR12
,
CR13
,
CR14
and
CR15
are lit, also
the LVPS fan is running) and all stay on.
A
B
C
C
D
D
Summary of Contents for WorkCentre 5790 Series
Page 1: ...Xerox WorkCentre 5790 Family Service Manual 708P90298 May 2013 ...
Page 4: ...May 2013 ii Xerox WorkCentre 5790 Family Introduction ...
Page 20: ...May 2013 xviii Xerox WorkCentre 5790 Family Translation of Warnings Introduction ...
Page 22: ...May 2013 1 2 Xerox WorkCentre 5790 Family Service Call Procedures ...
Page 32: ...May 2013 1 12 Xerox WorkCentre 5790 Family SCP 7 Service Call Procedures ...
Page 53: ...May 2013 2 21 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 1 3 3V Return ...
Page 54: ...May 2013 2 22 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 2 3 3V Return ...
Page 56: ...May 2013 2 24 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 3 5V Return ...
Page 57: ...May 2013 2 25 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 4 5V Return ...
Page 59: ...May 2013 2 27 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 5 12V Return ...
Page 61: ...May 2013 2 29 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 6 24V Return ...
Page 62: ...May 2013 2 30 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 7 24V Return ...
Page 63: ...May 2013 2 31 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 8 24V Return ...
Page 95: ...May 2013 2 63 Xerox WorkCentre 5790 Family 01K Status Indicator RAPs Figure 2 Circuit diagram ...
Page 96: ...May 2013 2 64 Xerox WorkCentre 5790 Family 01K Status Indicator RAPs ...
Page 178: ...May 2013 2 146 Xerox WorkCentre 5790 Family 06 350 Status Indicator RAPs ...
Page 592: ...May 2013 2 560 Xerox WorkCentre 5790 Family 16B 16C Status Indicator RAPs ...
Page 596: ...May 2013 2 564 Xerox WorkCentre 5790 Family 19 409 Status Indicator RAPs ...
Page 698: ...May 2013 3 2 Xerox WorkCentre 5790 Family Image Quality ...
Page 736: ...May 2013 3 40 Xerox WorkCentre 5790 Family IQS 8 Image Quality ...
Page 742: ...May 2013 4 6 Xerox WorkCentre 5790 Family Repairs Adjustments ...
Page 772: ...May 2013 4 34 Xerox WorkCentre 5790 Family REP 3 4 Repairs Adjustments ...
Page 938: ...May 2013 4 200 Xerox WorkCentre 5790 Family REP 9 10 Repairs Adjustments ...
Page 994: ...May 2013 4 256 Xerox WorkCentre 5790 Family REP 11 17 110 Repairs Adjustments ...
Page 1014: ...May 2013 4 276 Xerox WorkCentre 5790 Family REP 11 15 120 Repairs Adjustments ...
Page 1166: ...May 2013 4 428 Xerox WorkCentre 5790 Family REP 14 20 Repairs Adjustments ...
Page 1168: ...May 2013 4 430 Xerox WorkCentre 5790 Family ADJ 3 1 ADJ 3 2 Repairs Adjustments ...
Page 1174: ...May 2013 4 436 Xerox WorkCentre 5790 Family ADJ 4 1 Repairs Adjustments ...
Page 1242: ...May 2013 4 504 Xerox WorkCentre 5790 Family ADJ 14 1 ADJ 14 2 Repairs Adjustments ...
Page 1386: ...May 2013 6 2 Xerox WorkCentre 5790 Family General Procedures Information ...
Page 1524: ...May 2013 6 140 Xerox WorkCentre 5790 Family Fax Tags General Procedures Information ...
Page 1526: ...May 2013 7 2 Xerox WorkCentre 5790 Family Wiring Data ...
Page 1554: ...May 2013 7 30 Xerox WorkCentre 5790 Family PJ Locations Wiring Data ...
Page 1604: ...May 2013 8 2 Xerox WorkCentre 5790 Family Accessories ...
Page 1606: ...May 2013 8 4 Xerox WorkCentre 5790 Family ACC 1 Accessories ...
Page 1610: ...XEROX EUROPE ...