Xerox WorkCentre 5790 Series Service Manual page 92

F G
Y N
Go to the 01J Power On and LVPS Control Signals RAP, check the operation of
the on/off switch.
Perform the following:
1. Refer to 20A Fax Entry RAP and complete all of the initial actions.
2. Remove and re-seat the Fax PWB and riser PWB,
3. Refer to Reading or Setting the Power Save Duration
standby mode to low power mode and the low power mode to sleep mode val-
ues to 1 minute.
4. Go to Flag 2, Measure the voltage at
5. Leave the machine untouched, allow the machine to enter sleep mode.
6. Arrange for a Fax job to be sent from another machine to this machine.
The voltage measured changes from +3.3V to 0V when the Fax arrives at the
machine.
Y N
Go to Flag 8. Check for +3.3V at PJ155 between pins 2 and 6, also check for
+12V between pins 4 and 8. Refer to the information that follows:
• P/J155 Riser PWB.
The voltages are good.
Y N
Go to Flag 8. Check for +3.3V at the
between pins 2 and 6, also check for +12V between pins 7 and 8. The
voltages are good.
Y N
Go to Flag 5 and
PWB P/J131 between pins 17 and 13, also check for +12V between
pins 18 and 14. The voltages are good.
Y N
Go to Flag 5
module P/J25
between pins 4 and 14. The voltages are good.
Y N
Install a new LVPS and base module,
Check the wiring and connectors between
Repair the wiring as necessary,
Install a new power distribution PWB,
Check the wiring and connectors between PJ138 and PJ155. Refer to the
information that follows
• P/J138 Power distribution
• P/J155 Riser PWB.
Repair the wiring as necessary,
Install new parts as necessary:
• Fax PWB, PL 20.10 Item
• Riser PWB PL 3.22 Item
F G H
Status Indicator RAPs
01K
REP 3.2.
Times. Set both the
P/J105 pin 11.
Power distribution PWB
Flag 7. Check for +12V at the Power distribution
and Flag 7. Check for +12V at the LVPS and base
between pins 3 and 13, also check for +12V
PL 1.10 Item
P/J25 and P/J131.
REP 1.2.
PL 3.24 Item 5.
PWB.
REP 1.2.
4.
3.
F G H
• Single board controller PWB
Go to Flag 2. Measure the voltage at
Arrange for a Fax to be sent from another machine to this machine. The
measured changes from +3.3V to 0V when the Fax arrives at the machine.
Y N
Check the wiring and connectors between PJ1 and PJ105. Refer to the infor-
mation that follows:
• P/J1 IOT
• P/J114 Single Board Controller
Repair the wiring as necessary,
Go to Flag 4. Measure the voltage at
Arrange for a Fax job to be sent from another machine to this machine. The voltage
measured changes from +3.3V to 0V.
Y N
Perform OF7
PL 1.10 Item 2.
Install a new LVPS and base module,
Go to P/J114. Check the network connection. The harness and connectors are good.
Y N
P/J138
Install a new ethernet harness.
Perform the following:
1. Refer to Reading or Setting the Power Save Duration
mode to low power mode and the low power mode to sleep mode values to 1 minute.
2. Disconnect the telephone network harness from the Fax PWB to prevent a power
management event.
3. Go to Flag 2. Measure the voltage at
lows:
• P/J114 Single Board Controller
4. Leave the machine untouched, allow the machine to enter sleep mode.
3.
5. Arrange for a print job to be sent from a PC to this machine.
The voltage measured changes from +3.3V to 0V, when the print job arrives at the
machine.
Y N
Go to Flag 8. Check for +3.3V at PJ155 between pins 2 and 6, also check for +12V
between pins 4 and 8. Refer to the information that follows:
• P/J155 Riser
The voltages are good.
Y N
Go to Flag 8. Check for +3.3V at the
pins 2 and 6, also check for +12V between pins 7 and 8. The
good.
F I J
May 2013
2-60
PL 3.24 Item 3.
P/J1 pin 5 on the IOT PWB.
PWB.
PWB.
REP 1.2.
P/J26 pin 7 on the IOT
IOT PWB Diagnostics RAP before a new IOT PWB is installed,
PL 1.10 Item 3.
Times. Set both the standby
P/J105 pin 11. Refer to the information that fol-
PWB.
PWB.
Power distribution PWB
Xerox® WorkCentre® 5790 Family
voltage
PWB.
P/J138 between
voltages are