10/00
2-147
Phaser 790/DocuColor 2006
009-342
Status Indicator RAPs
Initial Issue
009-342 Patch Error RAP
ADC sensor output measuring Cin 50% patch area is lower than spec. after adjustment
Procedure
Access the Digital Output Test (GP 2). Enter code 53. Press the Item/Enter button. Enter code
56. Press the Item/Enter button. The Dispense Clutch energizes.
Y
N
Access the DO Stop Test. Enter code 56. Press the Item/Enter button. There is +24
VDC from J 55 pin 1 to frame ground.
Y
N
There is +24 VDC from J 55 pin 2 to frame ground.
Y
N
Go to Flag 9. Check for an open circuit. If the wire is OK, replace the MCU PWB
(PL 11.2).
Replace the Dispense Clutch (PL 10.1).
Access the Digital Output Test (GP 2). Enter code 56. Press the Item/Enter button.
There is less than 1 VDC from J 55 pin 1 to frame ground.
Y
N
Go to Flag 8. Check for an open circuit. If the wire is OK, replace the MCU PWB (PL
11.2).
Replace the Dispense Clutch (PL 10.1).
WARNING
HIGH VOLTAGE!
Exercise care when making the voltage checks in the following steps.
Access the Digital Output Test (GP 2). Enter code 0C. Press the Item/Enter button. There is
between -450 and -600 VDC from the C terminal on the HVPS to frame ground.
Y
N
There is less than 1 VDC from J 42 pin 4 to frame ground.
Y
N
Go to Flag 5 and Flag 12. Check for an open circuit. If the wire is OK, replace the
MCU PWB (PL 11.2).
Go to Flag 4. Check for an open circuit. If the wire is OK, replace the HVPS (PL 11.1). If
the problem persists, replace the MCU PWB (PL 11.2).
Access the DO Stop Test. Enter code 0C. Press the Item/Enter button. Re-access the DO
Test. Enter code 0D. Press the Item/Enter button. There is between 600 and 700 VAC from
the C terminal on the HVPS to frame ground.
Y
N
There is less than 1 VDC from J 42 pin 3 to frame ground.
Y
N
Go to Flag 5 and Flag 12. Check for an open circuit. If the wire is OK, replace the
MCU PWB (PL 11.2).
Go to Flag 4. Check for an open circuit. If the wire is OK, replace the HVPS (PL 11.1). If
the problem persists, replace the MCU PWB (PL 11.2).
Run a copy of the Test Page. Switch off the power while the print is being developed. Pull out
the Print/Copy Cartridge. Examine the surface of the drum for a developed image. Part of a
developed image is present on the drum.
Y
N
Access the Digital Output Test (GP 2). Enter code 0E. Press the Item/Enter button.
There is between -400 and -700 VDC from the A terminal of the HVPS to frame
ground.
Y
N
There is between -250VDC and -350VDC present.
Y
N
Access the Digital Output Test (GP 2). Enter code 0E. Press the Item/Enter
button. There is less than 1 VDC from pin 1 to pin 13 of J 42 on the HVPS.
Y
N
Go to Flag 2. Check for an open circuit. If the wire is OK, replace the MCU
PWB (PL 11.2).
Go to Flag 3. Check for an open circuit or a short circuit to ground. If the wires
are OK, replace the HVPS (PL 11.1). If the problem persists, replace the MCU
PWB (PL 11.2).
Go to Flag 3. Check for an open circuit or a short circuit to ground. Go to Flag 10.
Check for an open circuit. If the wires are OK, check the BCR connector (PL 5.1) and
the bias connector on the Copy/Print Cartridge for damage or contamination. Clean,
repair, or replace as required.
If the problem persists, replace the Copy/Print Cartridge (PL 5.1).
The ADC Sensor is dirty.
Y
N
Go to Flag 1. Check for an open circuit. If the wire is OK, replace the ADC Sensor
(PL 5.1). If the problem persists, replace the MCU PWB (PL 11.2).
Go to the 009-340 RAP.
Go to Flag 1. Check for an open circuit. If the wire is OK, replace the ADC Sensor (PL 5.1).
A
A
Summary of Contents for Phaser 790
Page 4: ...10 00 ii Phaser 790 DocuColor 2006 Initial Issue Introduction...
Page 10: ...10 00 1 2 Phaser 790 DocuColor 2006 Initial Issue Service Call Procedures...
Page 46: ...10 00 2 32 Phaser 790 DocuColor 2006 002 702 Initial Issue Status Indicator RAPs...
Page 80: ...10 00 2 66 Phaser 790 DocuColor 2006 005 704 Initial Issue Status Indicator RAPs...
Page 130: ...10 00 2 116 Phaser 790 DocuColor 2006 007 713 Initial Issue Status Indicator RAPs...
Page 150: ...10 00 2 136 Phaser 790 DocuColor 2006 008 707 Initial Issue Status Indicator RAPs...
Page 180: ...10 00 2 166 Phaser 790 DocuColor 2006 009 704 Initial Issue Status Indicator RAPs...
Page 193: ...10 00 2 179 Phaser 790 DocuColor 2006 010 700 Status Indicator RAPs Initial Issue...
Page 204: ...10 00 2 190 Phaser 790 DocuColor 2006 010 705 Initial Issue Status Indicator RAPs...
Page 220: ...10 00 2 206 Phaser 790 DocuColor 2006 011 706 Initial Issue Status Indicator RAPs...
Page 226: ...10 00 2 212 Phaser 790 DocuColor 2006 016 370 Initial Issue Status Indicator RAPs...
Page 234: ...10 00 3 2 Phaser 790 DocuColor 2006 Initial Issue Image Quality...
Page 245: ...10 00 3 13 Phaser 790 DocuColor 2006 IQ8 Image Quality Initial Issue...
Page 254: ...10 00 3 22 Phaser 790 DocuColor 2006 IQ18 Initial Issue Image Quality...
Page 258: ...10 00 4 4 Phaser 790 DocuColor 2006 Initial Issue Repairs and Adjustments...
Page 268: ...10 00 4 14 Phaser 790 DocuColor 2006 REP 1 13 Initial Issue Repairs and Adjustments...
Page 276: ...10 00 4 22 Phaser 790 DocuColor 2006 REP 4 9 REP 4 10 Initial Issue Repairs and Adjustments...
Page 290: ...10 00 4 36 Phaser 790 DocuColor 2006 REP 5 10 Initial Issue Repairs and Adjustments...
Page 312: ...10 00 4 58 Phaser 790 DocuColor 2006 REP 7 8 Initial Issue Repairs and Adjustments...
Page 366: ...10 00 4 112 Phaser 790 DocuColor 2006 REP 9 22 REP 9 23 Initial Issue Repairs and Adjustments...
Page 382: ...10 00 4 128 Phaser 790 DocuColor 2006 REP 10 19 Initial Issue Repairs and Adjustments...
Page 420: ...10 00 4 166 Phaser 790 DocuColor 2006 ADJ 11 1 Initial Issue Repairs and Adjustments...
Page 512: ...03 01 6 2 Phaser 790 DocuColor 2006 General Procedures and Information...
Page 534: ...03 01 6 24 Phaser 790 DocuColor 2006 GP 23 General Procedures and Information...
Page 546: ...03 01 6 36 Phaser 790 DocuColor 2006 General Procedures and Information...
Page 548: ...10 00 7 2 Phaser 790 DocuColor 2006 Initial Issue Wiring Data...
Page 586: ...10 00 7 40 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 1 1 Figure 1 Main Power On...
Page 592: ...10 00 7 46 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 2 1 Figure 1 Control Panel...
Page 607: ...10 00 7 61 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 5 4 Figure 1 Document Exit...
Page 612: ...10 00 7 66 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 6 5 Figure 1 Image Input...
Page 627: ...10 00 7 81 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 8 6 Figure 1 Registration...
Page 641: ...10 00 7 95 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 10 1 Figure 1 Fusing...