May 2013
2-44
Xerox® WorkCentre® 5790 Family
01G
Status Indicator RAPs
01G +24V Distribution RAP
Use this RAP to id24V distribution problems.
Initial Actions
Check the following:
•
The door interlock switch is closed.
•
The xerographic module is correctly installed.
Circuit Information
The +24V distribution in the machine can be divided into 3 stages; The first stage,
+24V Direct
is independent of the other two stages. The second stage,
+24V Interlocked
is derived from
+24V Direct
. The third stage,
+24V Interlocked From the IOT PWB
is derived from both
+24V
Direct
and
+24V Interlocked
.
+24V failures will result in the following UI messages:
•
Copying and scanning are unavailable
•
Copying and printing are unavailable
Typical faults caused by +24Copying and scanning are unavailable failures are; 03-480, 03-
482, 06-340, 09-060, 14-110 and 14-730.
+24V Direct
This supply feeds the power distribution PWB, DADH PWB and Scanner PWB. It also feeds
the inter24V circuit internally within the LVPS.This supply is not dependant on any
interlocks and is available at power on. The supply is not fused, but the LVPS will shut the volt-
age down if the supply is short circuited. The voltage can be measured on the LVPS at
P/J25
pins 1 and 2, but is more easily accessed on the power distribution PWB at
P/J131
pins 1 and
2, refer to
Figure 2
.
+24V Interlocked
This supply feeds the IOT PWB, main drive module, paper path module, ROS, Tray 1 and 2
control PWB and short paper path assembly. When +24V interlocked is available, CR16 on the
IOT PWB is lit. The availability of +24V interlocked is dependant on the +12V interlock circuit
being complete through the door interlock switch, xerographic module CRUM link and the main
drive PWB, refer to the circuit diagram in the
01-300
Front Door Open RAP. When the +12V
interlock circuit is complete, +24V interlocked will be available at
P/J27
pins 1 and 2 on the
IOT PWB,
Figure 3
. If the +24V interlocked supply is shorted, It will shut down the +24V direct
supply from the LVPS.
+24V Interlocked From the IOT PWB
The availability of +24V interlocked from the IOT PWB is dependant on +24V interlocked being
available at
P/J27
pins 1 and 2. The +24V interlocked from the IOT PWB is fused by a surface
mounted fuse F1 (non replaceable), so a short on any of the IOT PWB +24V interlocked out-
puts will result in fuse F1 being blown and all +24V interlocked outputs not available. Be aware
that a high resistance short circuit on any of the outputs will damage, but not blow fuse F1,
resulting in measurements of +24V at the top cap (input) of fuse F1 and less than +24V (but
not 0V) on the bottom cap of fuse F1.
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
Do not repair or install a new fuse F1 on the IOT PWB. Repairing or installing a new fuse
can cause overheating and a risk of fire.
WARNING
Do not repair or install a new fuse F1 on the power distribution PWB. Repairing or
installing a new fuse can cause overheating and a risk of fire.
WARNING
Do not repair or install a new fuse F1 on the main drive PWB. Repairing or installing a
new fuse can cause overheating and a risk of fire.
WARNING
Do not install a fuse of a different type or rating. Installing the wrong type or rating of
fuse can cause overheating and a risk of fire.
CAUTION
If the surface mounted fuse on the power distribution PWB, IOT PWB or main drive PWB has
blown, do not install a new PWB until the cause of the fault is repaired.
Remove the rear cover, switch on the machine,
GP 14
. CR13, CR15 and CR36 on the IOT
PWB are lit and stay lit.
Y
N
Go to the
OF3
Dead Machine RAP
CR16 is lit.
Y
N
+24V is available at
P/J27
pin 1 and pin 2,
Flag 5
.
Y
N
Switch off the machine,
GP 14
. Greater than 100 Ohms resistance is measured
between
P/J27
pin 1 and the machine frame, also between
P/J27
pin 2 and the
machine frame.
Y
N
There is a short circuit on the +24V interlocked circuit. Disconnect
P/J27
.
Greater than 100 Ohms resistance is measured on the harness between
P27 pin 1 and the machine frame, also between P27 pin 2 and the machine
frame.
Y
N
The IOT PWB is shorting the +24V interlocked to ground, a new IOT PWB
will need to be installed. Before installing a new IOT PWB, check the
fuse
F1
. If the fuse is open circuit the cause of the failure will need to be found,
refer to
Figure 2
,
Figure 3
and the
Component list
. Refer also to the
01H
Short Circuit and Overload RAP. When the cause of the high resistance
short circuit has been repaired, install a new IOT PWB,
PL 1.10 Item 2
.
Disconnect
P/J18
,
Flag 16
and
P/J19
,
Flag 17
. Less than 100 Ohms resis-
tance is measured on the harness between P27 pin 1 and the machine
frame, also between P27 pin 2 and the machine frame.
A
B
C
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 ...