Xerox DocuColor 12/DCCS50, Service Manual

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1/05
2-181 DocuColor 12/DCCS50
OF10-4 Pressure Roll AC Power RAP
Status Indicator RAPs
Reissue
OF10-4 Pressure Roll AC Power RAP
The Pressure Roll did not reach the Ready temperature within 8 minutes after Power On.
Initial Actions
Refer to BSD 10.2 and 10.12 for the following procedure.
• Open the Drawer and extend it to the service position. Perform the following:
–
Remove the Oil Cartridge ( PL 8.1 ).
– Remove the Front Cover ( PL 8.1 ).
– Remove the Top Cover ( PL 8.2 ).
– Ensure that NVM location 777-002 Pressure Roll Temperature Control = 130
(NASG/ESG) and NVM location 777-011 Pressure Roll Ready Temperature = 123
(NASG), 125 (ESG).
– Ensure that connectors P/J422B , P/J419B , P/J195 , P/J192 , P/J105 , P/J100 , P/
J11A , and P/J18 are seated correctly on the IOT Drive PWB, AC Driver PWB, SSR,
Pressure Roll Thermostat, and the Pressure Roll Heater Rod and there are no obvi-
ous crimped or broken wires.
Procedure
Close the Drawer. Cheat the Front Door Interlock. Switch on the power. Enter dC330 010-031
Pressure Roll Heater Rod On . Press Start . Press Start. ACH is measured momentarily
between P/J100 -2 on the SSR and P/J18 -1 on the AC Driver PWB.
Y N
Press Start. ACH is measured momentarily between
P/J100
-2 on the SSR and P/
J15 -1 on the AC Driver PWB (ACN into the AC Driver PWB).
Y N
ACH is measured between
P/J100
-3 on the SSR and P/J15 -1 on the AC Driver
PWB.
Y
N
ACH is measured between
P/J18
-4 on the AC Driver PWB and P/J15 -1 on
the AC Driver PWB.
Y
N
Open the drawer. There is +24 VDC between P/J11A
-4 on the AC
Driver PWB and GND.
Y
N
Replace the AC Driver PWB ( PL 9.3 ).
There is +24 VDC between P/J419B -17 on the IOT Drive and GND.
Y N
Go to Flag 6 ( Flag 16 w/ TAG P31 ) on BSD 10.2 and check for an
open circuit.
Close the drawer. The voltage at P/J419B -17 decreases to less than
+1.0 VDC.
Y
N
Replace the IOT Drive PWB ( PL 9.2 ).
Replace the AC Driver PWB ( PL 9.3 ).
Go to Flag 15 ( Flag 26 w/ TAG P31 ) on BSD 10.2 and check for an open circuit.
There is +5 VDC between P/J105 -1 on the SSR and GND.
Y N
Go to Flag 8 ( Flag 18 w/ TAG P31 ) on BSD 10.2 and check the harness for an
open circuit. If the harness is good, replace the IOT Drive PWB ( PL 9.2 ).
There is approximately +4.3 VDC between P/J105 -3 on the SSR and GND when
the lamp is off.
Y
N
Check for an open connection at pin 3 of P/J105
. If OK, replace the SSR ( PL
9.3 ).
Enter dC330 010-031 Pressure Roll Heater Rod On. Press Start. The voltage at P/
J105 -3 decreases to less than +1.0 VDC.
Y N
Replace the IOT Drive PWB ( PL 9.2
).
Go to Flag 7 ( Flag 17 w/ TAG P31 ) on BSD 10.2 and check the harness for an open
circuit. If the harness is good, replace the SSR ( PL 9.3 ).
Replace the AC Driver PWB ( PL 9.3 ).
Open the drawer. Remove the cheater on the Front Door Interlock. Measure the resistance
across the Pressure Roll Heater Rod.
The resistance is less than 10 Ohms.
Y N
Replace the Pressure Roll Heater Rod ( PL 8.3 ).
Measure the resistance across the Pressure Roll Thermostat. The resistance is less than
10 Ohms.
Y
N
Replace the Pressure Roll Thermostat (
PL 8.6
).
Go to Flag 11 and Flag 12 ( Flag 21 and Flag 22 w/ TAG P31 ) on BSD 10.2 and check for an
open circuit. If the wires are OK, replace the AC Driver PWB ( PL 9.3 ). If Tag P31 is present,
replace the Varistor PWB ( PL 9.6 ) if the problem persists
Check the following:
•
Disconnect the connectors to the components (Pressure Roll Thermostat, AC Driver
PWB, SSR, and the IOT Drive PWB). Check the connectors for broken, bent, or dirty pins.
Disconnect, then reconnect, the connectors several times to remove contaminants due to
oxidation.
• Check the Pressure Roll Control Thermistor ( PL 8.6 ). Replace the Thermistor if worn or
dirty.
• Check the Drawer connector P700B at the rear of the Fuser for damaged pins. Check the
mating connector on the IOT, and ensure that the mounting plate for the IOT connector is
not bent or misaligned.
• If no problem is found with the connectors, replace the SSR ( PL 9.3 ).
• If the problem continues, replace the IOT Drive PWB ( PL 9.2 ).
A
A
B
B
C
C
D
D