Xerox Work Center 123/128 Technical Info: Part 2

 

 

 

 

Introducing: Xerox C123 style... (Part 2)

 

Diagnostics, Adjustment Codes and Procedures for the XeroxCopyCentre C123, C128, & WorkCentre M123, M128, Pro123, Pro128

The diagnostic entry process is the same as the C118 machines (we covered those in a previous article) but that’s where thediagnostic similarities end. To get into “UI Diagnostic Mode” (UI stands for User Interface) from the powered on state, press and hold down the ‘0’ key for 5 seconds, then press the ‘Start’ button while still holding the ‘0’. The screen will prompt you for a Password. Enter the default access number (6789) and press “Confirm”. The colors on the display will reverse to show you that the machine is now in diagnostic mode.

To run a Service Report, you’ll then press the “Machine Status” button on the control panel and then select the “Billing Meters / Print Reports” tab on the display. Then press “Print Reports / List” button followed by the “CE” button. You can print out the following reports:

HFSI Report(High Frequency Service Items)

Jam Report•Failure Report(shows the # of times each fault occurred)

Shutdown Report(this is the Fault History which will show which Status Codes have come up recently and when they occurred) After running whatever reports you want to glean from the machine, turn the power off and back on to exit the diagnostic mode.

Now, for the rest of the Diagnostics, you’ll enter Diagnostic Mode but this time, you’ll press ‘Log In/Out’ on the control panel. You can then select “System Settings” followed by “Common Settings” andthen “Maintenance / Diagnostics” which is basically the Main Menu for our purposes. Within that main menu you’ll find:

NVM Read/Write: Non Volatile Memory adjustments.

Component Control: For testing sensors, motors, solenoids, etc.

Print Test Pattern•Initialize NVM

Adjustment / Others:Includes: ‘Machine ID / Billing Data’, ‘Initialize the HFSI’ (High Frequency Service Items), ‘Adjust Toner Density’, and ‘Tray 5 (Bypass) guide adjustment’.

If you then choose “NVM Read / Write”, you’ll be able to get to the adjustments you need to keep the machine running right. Things like the registration, fuser temperature, etc. The codes are 6 digit numbers separated by a hyphen between what is called the “Chain” and the “Link” (742-027 for example). Enter the “Chain-Link” code you wish to view and select “Confirm/Change”. The current value of your selected code will appear in the “Current Value” column. To change the setting, you’ll then input a new number in the “New Value” column and press “Save”. Here is an abbreviated list of the stuff we generally all want to know... I’ve left off anything which isn’t critical to regular maintenance and repairs (the fax codes for example are just too lengthy to get into). For the registration adjustments, the list below includes the ones which pertain to “plain paper” only, although the Service Manual lists multiple settings for different heavier weight paper for each tray (there are 32 codes in the book relating to registration and the list below shows only the 5 most commonly needed codes). The following list should suffice to get you through most service calls.

 

 

 

MEMORY ADJUSTMENTS (NVM Read / Write)
NVM Code	Description	Default	Value Meaning
700-089	HDD (Hard Disk Drive) Status	0	0=Installed, 1=Failed, 2=Not Installed
700-100	DHCP Mode		=Manual, 4=BOOTP, 2=DHCP, 1=RARP
700-130	Sleep Mode Timer	2	1-240 minutes to sleep mode
700-131	Sleep Mode Available	1	0=Disabled, 1=Enabled
700-171	Key Operator Tools Entry Password
700-399	Default unit of measure (mm / inch)		1 = millimeters, 3 = Inches
700-540	Auditron Mode	0	0=Off, 1=Internal Auditron, 2=Network Accounting
711-140	Document Feeder (DADF) Lead Edge Registration (side 1)	129
711-141	Document Feeder (DADF) Lead Edge Registration (side 2)	129
711-142	Document Feeder (DADF) Trail Edge (side 1)	129
711-143	Document Feeder (DADF) Trail Edge (side 2)	129
715-052	Platen type	2	0=Flat Top, 1=Doc Belt, 2=CVT
715-720	Copy Density Adjustment
715-721	Copy High Density Adjustment (darker3 setting)
715-722	Scan / Fax Density Adjustment
715-723	Scan / Fax High Density Adjustment (darker3 setting)
719-008	Market region	0	0=FX (Fuji Xerox), 1=AP (Asia / Pacific), XC (Xerox Canada), XE (Xerox Europe)
740-090	Output Configuration (where copies are set to be delivered)	0	0 = Face Down Tray#1, 1 = Face Down Tray #2, 3 = Finisher Bin1, 4 = Finisher Top Tray
741-001	Main and Drum Motor Speed	24	0=-2.7%, 53=2.6%
742-009	Enable Tray 4	0	0=Disable Tray 4, 1=Disable Tray 4
742-027	Lead Edge Registration (all trays)	33	0=-7.18mm, 33=0.0mm, 66=7.18mm
742-030	Invert timing (all trays)	33	0 = -14.96mm, 33 = 0mm, 66 = 14.96mm
742-098	Enable Face Down Tray #2	0	0 = Disable Tray, 1 = Enable Tray
742-099	Enable Face Up Tray	0	0 = Disable Tray, 1 = Enable Tray
744-006	Fuser Standby Lamp On temperature	45	default (45) = 175 degrees C
744-010	Fuser Standby Lamp Off temperature	20	default (20) = 180 degrees C
744-043	Fuser Ready temperature	35	default (35) = 165 degrees C
744-220	Fuser Overtemperature Reset (Resets 010-320 & 010-327 Status Codes)	0	0 = Reset, 1 - 5 = Fault condition
749-523	Side Normal Erase Adjustment	8
749-524	Top Normal Erase Adjustment	9
749-527	End Normal Erase Adjustment	9
752-954	ATC (Auto Toner Concentration) Sensor	0	0 = Normal, 1 = Abnormal
760-001	Lead Edge Registration (Tray 1, Plain Paper)	33	0=-7.18mm, 33=0.0mm, 66=7.18mm
760-002	Lead Edge Registration (Tray 2-4, HCF, Plain Paper)	33	0=-7.18mm, 33=0.0mm, 66=7.18mm
760-003	Lead Edge Registration (Bypass / MPT Manual Paper Tray)	33	0=-7.18mm, 33=0.0mm, 66=7.18mm
760-005	Lead Edge Registration (Duplex)	33	0=-7.18mm, 33=0.0mm, 66=7.18mm
770-101	IP Address
770-102	Subnet Mask
770-103	Gateway Address		0=Stop, 1=Start
770-190	Mail Service Start / Stop	1	enter email address (username@domain.name)
770-191	Address of Mail Sender
770-202	SMTP Mail Server IP Address	0.0.0.0
770-286	POP Server User Name
770-287	POP Server Password		prioritize trays from 1 to 4
780-060	Tray 1 Priority	1	prioritize trays from 1 to 4
780-061	Tray 2 Priority	2	Prioritize trays from 1 to 4
780-062	Tray 3 Priority	3	prioritize trays from 1 to 4
780-063	Tray 4 Priority	4	1= Stop Printing, 0 = Do not stop printing
780-085	Drum End of Life disable	1	980=98.0%, 1000=100.0%, 1020=102.0%
785-024	Adjust "100%" setting (98-102%) for Fast Scan	1000	980=98.0%, 1000=100.0%, 1020=102.0%
785-025	Adjust "100%" setting (98-102%) for Slow Scan	1000	0=0mm, 5=5mm, 10=10mm
785-080	Edge Erase margin	5	1=Text, 2=Text & Photo, 3=Photo, 4=Pencil Text
790-094	Default Original Type	1	0=Off, 1=On
790-097	Default Background suppression	1	0=Lighter3, 1=Lighter2, 2=Lighter1, 3=Normal, 4=Darker1, 5=Darker2, 6=Darker3
790-098	Default Density Adjustment	3	0=Off, 1=On
790-099	Mixed Size Default	0	0-256
790-122	Default Sharpness	2	0=Sharper, 1=Sharp, 2=Normal, 3=Soft, 4=Softer
790-181	Default Duplex Setting	0	0=1 to 1 sided, 1= 1 to 2 sided, 2= 2 to 1 sided, 3= 2 to 2 sided
790-183	Default Exit Tray	0	0= Center Tray, 1= Side Tray, 2= Finisher Tray, 3= Center Tray2
790-223	Default Color Mode in Scan	1	0= Full Color, 1=Grayscale, 2=Text & Photo
790-225	Default Scanning Resolution in Scan	0	0=200dpi, 1=300dpi, 2=400dpi, 3=600dpi, 4=100dpi
790-230	Contrast Adjust in Scan	2	0=Higher, 1=High, 2=Standard, 3=Low, 4=Lower
790-288	Default Background suppression in Scan	0	0=Off, 1=On
790-301	Top Edge Erase in Copy	2	0 mm to 50mm in 1mm increments
790-302	Bottom Edge Erase in Copy	2	0 mm to 50mm in 1mm increments
790-303	Left Edge Erase in Copy	2	0 mm to 50mm in 1mm increments
790-304	Right Edge Erase in Copy	2	0 mm to 50mm in 1mm increments

 

 

 

Maintaining Serial Numbers in Diagnostics (clearing 124-315 codes): Maintaining a consistent machine Serial Number in the diagnostics is important if you are replacing either the Main Board (MCU NVM PWB) or the ESS Board (network controller). This procedure is designed to maintain the integrity of the serial number. The machine has a redundant system for assuring that if the Memory gets corrupted on one system or board, the Serial Number remains the same for the machine after the board is replaced or re-initialized. If the boards in the machine don’t agree about the Serial Number, the Fault Code “124-315” will show up and this procedure will become necessary to clear the Fault.

Here’s the procedure… From the “Maintenance / Diagnostics” menu, choose “Adjustment / Others”. Select “Machine ID / Billing Data”. You can read the Billing Meters from here or the Serial Number as it is set on each board. To synchronize the Serial Number data, refer to the serial number plate on the machine and select the Board which has the right serial number (usually the one which was not replaced). Enter the Serial Number and push “Confirm” twice. The “Set Serial Number” button will become available. Touch that button and follow the on-screen instructions and pop-up windows to synchronize the boards’ serial numbers.

Clearing HFSI (High Frequency Service Items) Counters (Fuser, Bias Transfer Roll, etc.).
If you enter the “Initialize HFSI Counters” option from the “Adjustment / Others” menu, you can select individual HFSI’s such as the Fuser and Bias Transfer Roll to reset their count in the machine’s memory. To reset one of the items, enter the “Chain-Link” code as shown on the following table and then select “Reset Correct Value”… The screen will show “Diagnostic Routine Completed” and the HFSI counter you chose will be reset. Here’s a list of the codes in the HFSI:

 

 

 

HFSI Chain-Link Codes:
HFSI Code	Description
954-807	Fuser Count
954-800	Tray 1 Feed Count
954-801	Tray 2 Feed Count
954-802	Tray 3 Feed Count
954-803	Tray 4 Feed Count
954-804	HCF (High Capacity Feeder) Feed Count
954-805	Bypass / MPT (Manual Paper Tray) Feed Count
954-808	Bias Transfer Roll
956-802	Scanner Count
956-803	Exposure Lamp On time in seconds, Lamp Life is expected at 2000 hours.
956-804	Exposure Lamp On Count (expected life is 6 million times)
956-808	Platen Opened / Closed (Platen models only)
955-806	Document Feed Count
955-807	Document Feed, single sided (simplex) Count
955-808	Document Feed, duplex mode Count
955-810	Platen Opened / Closed (Document Feeder models only)
955-829	Inverter Solenoid on Count
955-831	Document Stamp Solenoid Count

 

Adjust Toner Density: This function is also reachable from the “Adjustment / Others” menu. If you select “Adjust Toner Density” and select “Measure Sensor State” and then press ‘Start’, the ATC (Automatic Toner Concentration) values will show on the display including the ATC Target Value, ATC Output Value, ATC Result (ready or NG), and TC (Toner Condition) Status (Normal, Low TC, or High TC). When “Low TC” is displayed, select “Adjust Toner Density” and use the “UP” button to increase the number. When “High TC” shows up, select the “DOWN” button. When the display shows “Normal” then the toner density in the developer unit is sensed as being correct and the procedure is a success. At that point press “Close” to exit the adjustment.

Tray 5 (Bypass) Width Guide Adjustment: This Bypass uses an analog input to recognize what size paper the Width Guide Adjustment is set to. If the machine gets confused about the paper size in the Bypass Tray, you can re-educate it. From the “Adjustment / Others” screen, select “Tray 5 / Bypass Guide Adjustment”. Set the Bypass Guide on the machine to the minimum position and select “Minimum Size Position” followed by “Start”. The display will show “OK” or “NG”. If “NG” shows up, repeat the procedure. Once it shows “OK”, set the Bypass Width Guide to the maximum width and then press “Maximum Position”. Again, you are looking to see that the display shows “OK” when the machine sets up properly.

Touchscreen alignment (aligns the display with the touch-sensitivity of the touchscreen). This is generally only needed if you replace the Touchscreen or the entire User Interface (control console). There is supposed to be a “Touch Pen” tool hidden under the removable panel which covers the numeric buttons on the control console, but you can use any pointed object if you are careful not to damage the delicate surface of the touchscreen. Hold down the ‘0’, ‘1’, and ‘3’ keys while powering on the machine. A grid with intersections labeled P1 to P9 will show on the display. Use the Touch Pen to touch the intersections of the up and down lines P1 to P9 in sequence. Stay on the intersections for about 1 second each. Once you do all 9 buttons, the machine will coordinate the array of values. Power the machine off and back on. The touchscreen should now be aligned properly.