Xerox 1632 2240 3535 Color Carrera Manual

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3-21 DC1632/2240
Image Quality Specifications
Image Quality Prelaunch Training/Review
Image Quality SpecificationsThe following steps are used to set up the machine for the purpose of making test pattern cop-
ies to judge output image color density, balance, and registration. 
1. Set the following Customer Mode Settings to the positions listed: 
a. Output Color - Full Color 
b. Original Type - Photo & Text / Halftone 
c. Lighter/Darker - Auto Contrast
d. Variable Color Balance - Normal 
e. Color Saturation - Normal 
f. Sharpness - Normal 
2. Place  the Color Test Pattern on the platen. Load  11î  X 17  or A3 paper  into Tray 1. Make
a copy of the test pattern. 
3. Compare the copy to the test pattern. Refer to Figure 2 and Table 1 for this evaluation.Registration and border deletions are checked using the Step Scales on the Geometric Test
Pattern, an example of which is shown in Figure 1. All of the scales are 20mm in height, and
are made up of four 5mm steps. Step 1 will be described as at the top of the Step Scale, and
Step 4 will be described as at the bottom. 
Figure 1 Step Scales 
Each Step Scale is positioned for a particular paper size and orientation. Ta b l e  2 indicates the
appropriate Step Scales to use for the various paper sizes, orientations and measurement
locations. 
1. Set the following Customer Mode Settings to the positions listed: 
ï Output Color - Full Color  Table 1 Color Specifications Check Locations 
AREA 
(Fig. 1)Check for the Following Results 
A  Text Reproduction. Each of the seven sentences in this area are fully repro-
duced with no missing letters or portions of letters. The sentences are repro-
duced in Black, Cyan, Magenta, Yellow, Red, Green and Blue. 
B  Color Registration. The patterns in location B should be properly registered to 
provide Black, Red, Green and Blue lines. 
C  Front to Rear Density. The density of both the low density and high density 
bands should be uniform from front to rear. This can be tested by folding the 
copy in the center and comparing the front side of the copy to the rear side of 
the copy at location C. Both the high density and low density locations should 
exhibit even front to rear density. 
D  Color Gradation. This area should exhibit a decreasing density of each of the 
colors from 100% density to 5% density. In a properly adjusted machine, the 
10% patches should be visible and the 5% patches should be barely visible or 
not visible on the test pattern copy (except for the bottom row).
E  Routine Color. Location E represents three general tests for the machine to 
reproduce colors common to customer originals. 
Location A is a general skin tone test. 
Location B represents the color of grass or other common foliage. 
Location C represents the color of the sky. 
F  Photo Gradation. Location F is not used for any copy quality evaluation on 
this product. 
G  IIT Calibration Patches. These patches are scanned for IIT Calibration during 
the DC945 IIT Calibration portion of Max Setup. 
H  100 Lines/Inch Image. A Moire defect will show on this image. Moire on a 100 
Line/Inch image is within specification. 
I  175 Lines/Inch Image. This image is used to test for Moire. Depending on the 
degree of the defect, moire seen on this image should be considered out of 
specification. 
Table 2  Geometric Checkout - Step Scale Data. 
Paper 
Size Orientation  To check: Step Scales to use (refer to Figure 2) 
11x17 SEF  Lead Edge
Side Edge
Trail EdgeLE1 through LE3
SE1 through SE4 (top); SE5 and SE8 (bottom)
TE3
A3 SEF  Lead Edge
Side Edge
Trail EdgeLE 1 through LE3
SE1 through SE4 (top); SE6 and SE7 (bottom)
TE4
8.5x11 SEF  Lead Edge
Side Edge
Trail EdgeLE 1 and LE2
SE1 through SE3 (top); SE9 (bottom)
TE5
A4 LSEF  Lead Edge
Side Edge
Trail EdgeLE 1 and LE2
SE1 through SE3 (top); SE10 (bottom)
TE6
8.5x11 LEF  Lead Edge
Side Edge
Trail EdgeLE1 through SE3
SE1 and 2 (bottom) SE6 and SE7 (top)
TE 2 
A4 LEF  Lead Edge
Side Edge
Trail EdgeLE1 through SE3
SE5 (top); SE1 and SE2 (bottom)
TE1  
						

							6/02
3-22DC1632/2240
Image Quality Specifications
Prelaunch Training/Review Image Qualityï Original Type - Photo & Text / Halftone 
ï Lighter/Darker - Auto Contrast 
ï Color Saturation - Normal 
ï Variable Color Balance - Normal 
ï Sharpness - Normal 
2. Place  Test Pattern 82E8220 on the platen and 24# Xerox Color Xpressions 11 X 17
(USCO), or 90 GSM Colotech A3 (XL) paper in Tray 1. Make a copy of  the test pattern. 
3. Follow the directions in Table 3 to determine if the machine registration is within specifica-
tion. 
Table 3 Test Pattern Image Data Locations for Geometric Specifications 
GEOMETRIC 
AREA CHECK PERFORMED 
Magnification  Locate the 300mm line running from near LE1 to the trail edge of the 1.8 lp 
ladder. Locate the 200mm line running from near LE1 to near LE3. Make a 
copy. The measurements should be:.
ï Left to Right.: 300mm ±1.8mm 
ï Front to Rear: 200mm ±1.2mm 
Resolution  Observing the targets on the test pattern copy at locations R1 through R8, the 
line pairs specified below are clearly visible for the magnification value indi-
cated: 
ï 70%: 3.0 lp/mm 
ï 100% through 400%: 4.3 lp/mm 
Lead Edge 
Registration Measure from the lead edge of the paper to the top of Step 3 on the LE2 Step 
Scale. The measurement should be: 
ï Trays 1 through 4: 10mm ±1.5mm (±1.9mm for 2nd side of duplex job) 
ï Tray 5: 10mm ±2.2mm 
Side Edge 
Registration Measure from the side edge of the paper to the top of Step 3 on the SE2 and 
SE3 Step Scales. The distance should be within the following tolerance: 
ï Trays 1 through 4: 10mm ±2.0mm (±2.4mm for 2nd side of duplex job)
ï Tray 5: 10mm ±2.4mm 
Lead Edge 
SkewFor skew from front to rear, the distance from the lead edge of the paper to the 
targets at LE1 and LE3 are measured. The measurements must match each 
other to within the tolerance below. 
ï Trays 1 through 4: within ±1.5mm (±2.0mm for 2nd side of duplex job)
ï Tray 5: within ±2.0mm 
Side Edge 
Skew For skew from left to right, the distance from the side edge of the paper to the 
targets at SE1 and SE4 are measured. They must match each other to within 
the tolerance below: 
ï Trays 1 through 4: within ±3.0mm (±4.0mm for 2nd side of duplex job)
ï Tray 5: within ±4.0mm 
Line Density  This parameter is measured on the two 0.7G Text Blocks on the test pattern 
copy. The machine should reproduce all of the characters shown in the block 
on the output copy. 
Solid Repro-
duction This specifies the desired standard for reproduction of solid gray images at 1.0 
K. The 1.0 K blocks on the output copy should reproduce with minimal mottle 
or graininess. 
Low Contrast 
Reproduction This specifies the desired standard for reproduction of low density images. 
The machine should reproduce all of the text in the 0.2 G Text Blocks on the 
output copy. 
ROS Borders 
(Image Loss)Measure from the lead edge of the paper at LE2, the side edge of the paper at 
SE2 and SE7, and the trail edge at TE4, to the top edge of the step scales in 
those locations. The measurements should conform to the following specifica-
tions: 
ï Lead Edge 4mm ± 1 mm 
ï Side Edges 2 mm ± 1 mm 
ï Trail Edge 2 mm ± 1 mm  Table 3 Test Pattern Image Data Locations for Geometric Specifications 
GEOMETRIC 
AREA CHECK PERFORMED  
						

							6/02
3-23 DC1632/2240
Image Quality Specifications
Image Quality Prelaunch Training/ReviewFigure 2 Color and Geometric Test Patterns 
						

							6/02
3-24DC1632/2240
Image Quality Specifications
Prelaunch Training/Review Image Quality 
						

							6/02
4-1 DC1632/2240Repairs and Adjustments Prelaunch Training/Review
4 Repairs & Adjustments
REPAIRS
 ElectricalREP 1.1 3.3/5 V LVPS Bracket ....................................................................................... 4-3
REP 1.2 MCU PWB ........................................................................................................ 4-3
REP 1.3 ESS Chassis ..................................................................................................... 4-4
REP 1.4 3.3 V LVPS or 5 V LVPS .................................................................................. 4-4
REP 1.5 24 V LVPS ........................................................................................................ 4-5
REP 1.6 T5 T7 HVPS Chassis ........................................................................................ 4-5
REP 1.7 T5 or T7 High Voltage Power Supplies............................................................. 4-6
REP 1.8 I/F (Interface) PWB ........................................................................................... 4-6
REP 1.9 24 V LVPS Bracket ........................................................................................... 4-7
REP 1.10 HVPS T6 ......................................................................................................... 4-8
REP 1.11 AC Drive PWB ................................................................................................ 4-8
REP 1.12  ESS PWB ...................................................................................................... 4-9
REP 1.13  ESS NVM PWB ............................................................................................. 4-11 Main DrivesREP 4.1 Main Drive Motor Assembly .............................................................................. 4-13
REP 4.2 IBT Motor .......................................................................................................... 4-14
REP 4.3 Developer Drive Motor ...................................................................................... 4-14
REP 4.4 Drum Motor Assembly ...................................................................................... 4-15 Document HandlerREP 5.1 DADF ................................................................................................................ 4-17
REP 5.2 Registration Gate Solenoid ............................................................................... 4-18
REP 5.3 Left/Right Counterbalance ................................................................................ 4-19
REP 5.4 DADF Control PWB .......................................................................................... 4-21
REP 5.5 Feed Motor Assembly ....................................................................................... 4-22
REP 5.6 Nudger Roll ....................................................................................................... 4-23
REP 5.7 Feed Roll Assembly .......................................................................................... 4-24
REP 5.8 Lower Chute Assembly ..................................................................................... 4-25
REP 5.9 Retard Roll ........................................................................................................ 4-26
REP 5.10 Set Gate Solenoid Assembly .......................................................................... 4-27
REP 5.11 Registration Sensor ........................................................................................ 4-29
REP 5.12 Size Sensors 1/2 (Rear/Front) ........................................................................ 4-30
REP 5.13 DADF Belt Motor Assembly ............................................................................ 4-31
REP 5.14 Duplex Sensor ................................................................................................ 4-32
REP 5.15 Registration Pinch Roll ................................................................................... 4-33
REP 5.16 Exit Motor Assembly ....................................................................................... 4-35
REP 5.17 Document Transport ....................................................................................... 4-36
REP 5.18 Rear Cover ..................................................................................................... 4-37
REP 5.19 Platen Belt ...................................................................................................... 4-38 ImagingREP 6.1 ROS .................................................................................................................. 4-41
REP 6.2 Platen Glass ..................................................................................................... 4-42
REP 6.3  IIT Top Cover ................................................................................................... 4-43REP 6.4 Lens Kit ............................................................................................................. 4-43
REP 6.11 Carriage Cables .............................................................................................. 4-44
REP 6.12 Carriage Motor ................................................................................................ 4-49
REP 6.13 Exposure Lamp ............................................................................................... 4-50
REP 6.14 Lamp Wire Harness ........................................................................................ 4-51
 Paper TraysREP 7.1 Tray 5 ................................................................................................................ 4-53
REP 7.2 Tray 5 Feed Roll ............................................................................................... 4-54
REP 7.3 Tray 1 Feeder ................................................................................................... 4-55
REP 7.4 Tray 1 Feed/Lift Motor....................................................................................... 4-55
REP 7.5 Tray 1 Paper Size Sensor ................................................................................. 4-56
REP 7.6 Tray 3 ................................................................................................................ 4-56
REP 7.7 Tray 4 ................................................................................................................ 4-57
REP 7.8 Tray 1 ................................................................................................................ 4-57
REP 7.9 Tray 2 ................................................................................................................ 4-58
REP 7.10  Tray 2 Feeder ................................................................................................ 4-59
REP 7.11 Tray 3 Feeder ................................................................................................. 4-60
REP 7.12  Tray 4 Feeder ................................................................................................ 4-61 Paper Feed and RegistrationREP 8.1 Left Cover Assembly ......................................................................................... 4-63
REP 8.2 Duplex Chute .................................................................................................... 4-65
REP 8.3 Duplex Transport Assembly .............................................................................. 4-66
REP 8.5 Inverter Transport ............................................................................................. 4-66
REP 8.6 Registration Transport Assembly ...................................................................... 4-67
REP 8.7 Exit Transport Assembly ................................................................................... 4-68 XerographicREP 9.1 Drum Cartridge ................................................................................................. 4-69
REP 9.2 ROS Shutter Motor ........................................................................................... 4-69
REP 9.3 Waste Toner Cartridge Cover ........................................................................... 4-70
REP 9.4 Waste Toner Cartridge...................................................................................... 4-70
REP 9.5 Full Toner Sensor ............................................................................................. 4-71
REP 9.6 Inner Cover ....................................................................................................... 4-71
REP 9.7 Toner Dispenser ............................................................................................... 4-72
REP 9.8 Plate Assembly ................................................................................................. 4-73
REP 9.9 Developer Housing ........................................................................................... 4-75
REP 9.10 Developer........................................................................................................ 4-76
REP 9.11 Toner Dispenser Base Assembly.................................................................... 4-77
REP 9.12 IBT Steering Drive Assembly .......................................................................... 4-78
REP 9.13 Agitator Motor Assembly ................................................................................. 4-78
REP 9.14 MOB Sensor Assembly ................................................................................... 4-79
REP 9.15 IBT Belt Assembly........................................................................................... 4-79
REP 9.16 IBT Cleaner Assembly .................................................................................... 4-80
REP 9.17 Auger Assembly .............................................................................................. 4-80
REP 9.18 Lever ............................................................................................................... 4-81
REP 9.19 Left Hinge/Right Hinge .................................................................................... 4-81 
						

							6/02
4-2DC1632/2240 Prelaunch Training/Review Repairs and Adjustments REP 9.20 Right Lift Assembly ......................................................................................... 4-82
REP 9.21 Left Lift Assembly ........................................................................................... 4-83
REP 9.22  Transfer Belt .................................................................................................. 4-84
REP 9.23  1st BTR Roll................................................................................................... 4-90
REP 9.24 2nd BTR Roll .................................................................................................. 4-90
REP 9.26 ATC Sensor .................................................................................................... 4-91
REP 9.27 Retract Shaft ................................................................................................... 4-93
 FuserREP 10.1 Fuser............................................................................................................... 4-95
REP 10.2 Fuser Fan ....................................................................................................... 4-95
REP 10.3  Main/Sub Heater Rod .................................................................................... 4-96 FinisherREP 12.1  H Transport Assembly ................................................................................... 4-99
REP 12.2  H Transport Belt............................................................................................. 4-100
REP 12.3  Entrance Sensor ............................................................................................ 4-103
REP 12.4  Finisher .......................................................................................................... 4-104
REP 12.5  Stack Height Sensor Assembly ..................................................................... 4-105
REP 12.6  Eject Roll Assembly ....................................................................................... 4-106
REP 12.7  Decurler Roll .................................................................................................. 4-110
REP 12.8  Finisher Drive Motor ...................................................................................... 4-111
REP 12.9  Belt.................................................................................................................4-112
REP 12.10  Rail............................................................................................................... 4-115
REP 12.11  Stapler Assembly ......................................................................................... 4-120
REP 12.12  Compiler Tray Assembly.............................................................................. 4-122
REP 12.13  Stacker Motor Assembly .............................................................................. 4-126
REP 12.14  Front Elevator Bracket ................................................................................. 4-128
REP 12.15  Paddle Gear Shaft ....................................................................................... 4-131
REP 12.16  Finisher PWB ............................................................................................... 4-133
REP 12.17  Entrance Upper Cover ................................................................................. 4-135
REP 12.18  Cam Bracket Assembly ............................................................................... 4-136
REP 12.19 Finisher Rack Assembly ............................................................................... 4-139
REP 12.20 Lowering Stacker Tray .................................................................................. 4-141 CoversREP 14.1 Top Cover ....................................................................................................... 4-143
REP 14.2 Rear Cover ..................................................................................................... 4-144
REP 14.3 Right Cover ..................................................................................................... 4-144
REP 14.4 Rear Left Middle Cover ................................................................................... 4-145
REP 14.5 Rear Left Upper Cover.................................................................................... 4-145
REP 14.6 Left Lower Cover Assembly ............................................................................ 4-146
REP 14.7 Cover Assembly.............................................................................................. 4-146
REP 14.8 Fuser Cover .................................................................................................... 4-147
REP 14.9 Rear Cover ..................................................................................................... 4-148
REP 14.10 Inner Cover ................................................................................................... 4-148
REP 14.11 Left Cover Assembly..................................................................................... 4-149
REP 14.12 Lower Cover ................................................................................................. 4-149
 ADJUSTMENTS
DADFADJ 5.1  DADF Side Registration ................................................................................... 4-151
ADJ 5.2  DADF Counterbalance ..................................................................................... 4-153
ADJ 5.3  DADF Parallelism ............................................................................................. 4-154
ADJ 5.4  Document Transport  Height ............................................................................ 4-155
ADJ 5.5  DADF Top Registration .................................................................................... 4-157
ADJ 5.6  DADF Document Detection .............................................................................. 4-159
ADJ 5.7  DADF Non-standard Document Custom Registration ...................................... 4-160 ScannerADJ 6.1 Full/Half Rate Carriage ...................................................................................... 4-161 Xerographic/RegistrationADJ 9.1 Max Setup ......................................................................................................... 4-165
ADJ 9.2 ATC Sensor Setup (dC921)............................................................................... 4-165
ADJ 9.3   TRC Control/Toner Density Setup (dC922) ..................................................... 4-166
ADJ 9.4  ADC Output Check (dC934) ............................................................................. 4-166
ADJ 9.5  TRC Adjust (dC924) ......................................................................................... 4-167
ADJ 9.6   Color Registration (dC685) .............................................................................. 4-168
ADJ 9.7   IIT Calibration (dC945) .................................................................................... 4-170
ADJ 9.8  Hard Disk Diagnostics/Setup (dC355) .............................................................. 4-170
ADJ 9.9 IOT Registration Series (dC129) ....................................................................... 4-171
ADJ 9.10  IIT Lead Edge Registration ............................................................................. 4-173
ADJ 9.11  IIT Side Edge Registration.............................................................................. 4-174
ADJ 9.12  IIT Vertical/Horizontal Magnification ............................................................... 4-175
ADJ 9.13  UI Display Calibration ..................................................................................... 4-178
ADJ 9.14 Inboard/Outboard Density ............................................................................... 4-179 Finisher ADJ 12.1 Finisher Alignment .......................................................................................... 4-185 
						

							6/02
4-3 DC1632/2240
REP 1.1, REP 1.2Repairs and Adjustments Prelaunch Training/Review
REP 1.1 3.3/5 V LVPS BracketParts List on  PL 9.1 
Removal
WARNINGTo avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
1. Remove Rear Cover (REP 14.2). 
2. Remove High Voltage Power Supply Chassis (REP 1.6). 
3. Release 6 harness clips.
4. Remove 3.3/5 VDC Power Supply Chassis (Figure 1). 
a. Disconnect Harness P/Jís (4).
b. Loosen Lower Screws (2).
c. Remove upper Screws (2) and remove 3.3/5 VDC Power Supply Chassis.
Figure 1 Removing 3.3/5 VDC Power Supply Chassis
REP 1.2 MCU PWBParts List on  PL 13.1 
Removal1. If a new PWB will be installed, record NVM values for new PWB
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
2. Remove Right Cover (REP 14.3). 
3. Remove Top Cover (REP 14.1).
4. Remove Rear Cover (REP 14.2).
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
5. Remove ESS Chassis (REP 1.3).
6. Remove Screws and remove MCU PWB from ESS Chassis.
Upper
Screw
Upper 
Screw
Lower 
Screw
Lower 
Screw
3.3 VDC 
LV P S
5 VDC 
LV P S
Harness P/Jís
Harness P/Jís 
						

							6/02
4-4DC1632/2240
REP 1.3, REP 1.4
Prelaunch Training/Review Repairs and Adjustments
REP 1.3 ESS ChassisParts List on  PL 13.1 
Removal1. If a new PWB will be installed, record NVM values for new PWB.
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
2. Remove Right Cover (REP 14.3). 
3. Remove Top Cover (REP 14.1).
4. Remove Rear Cover (REP 14.2).
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
5. Remove ESS PWB (REP 1.12).
6. Remove ESS Chassis (Figure 1).
a. Push Harness Clips (2) down out of Chassis holes
b. Disconnect Harness P/Jís (6).
c. Disconnect Harness P/Jís (2).
d. Disconnect Switch from Chassis.
e. Loosen Screws (2) at front and remove Screws (2) at rear of machine.
f. Lift outer end of Chassis to disconnect Hidden Connector and then remove Chassis.
Figure 1 Removing ESS ChassisReplacementNOTE: If the ESS PWB will be replaced with a new ESS PWB, discard the MAC ROM from the
new ESS PWB and install the MAC ROM removed from the old ESS PWB.
REP 1.4 3.3 V LVPS or 5 V LVPSParts List on PL 9.1 
Removal
WARNINGTo avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
1. Remove Rear Cover (REP 14.2). 
2. Remove High Voltage Power Supply Chassis (REP 1.6). 
3. Remove appropriate LVPS (Figure 1). 
a. Disconnect appropriate Harness P/Jís (2).
b. Remove appropriate Screws (4) and remove LVPS.
Figure 1 Removing LVPS
Screws (2)
Screw
Screw
Harness 
Clips
Harness 
P/Jís (6)
Harness 
P/Jís (2)Hidden 
Connector
Outer 
End
Switch
Screws (2)Screws 
(2)Screws (2)
Screws 
(2)
3.3 VDC 
LVPS5 VDC 
LV P S
Harness P/JísHarness P/Jís 
						

							6/02
4-5 DC1632/2240
REP 1.5, REP 1.6Repairs and Adjustments Prelaunch Training/Review
REP 1.5 24 V LVPS Parts List on  PL 9.1 
Removal
WARNINGTo avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
1. Remove Rear Cover (REP 14.2).
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
2. Remove 24 V LVPS (Figure 1).
a. Disconnect Harness P/Jís (3).
CAUTION
5 screws with red marks secure LVPS to heat sink.  Do not remove them.
b. Loosen Screws (2) and remove LVPS.
Figure 1 Removing 24 VDC Power Supply
REP 1.6 T5 T7 HVPS ChassisParts List on PL 9.1
Removal
WARNINGTo avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
CAUTION
HVPS can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
1. Remove Rear Cover (REP 14.2). 
2. Remove High Voltage Power Supply Chassis (Figure 1). 
a. Loosen screw and disconnect Ground Wire.
b. Disconnect Harness P/Jís (2).  Do not disconnect Soldered Connection
c. Disconnect High Voltage P/J (1).
d. Disconnect High Voltage P/Jís (2).
e. Remove Screws (3).
f. Pivot HVPS down and engage stop strap with frame tab (not shown in figure).
g. Disconnect High Voltage P/J (1) at bottom (not shown in figure).
Figure 1 Removing High Voltage Power Supply
Harness 
P/J
Screw
Screw
Harness 
P/Jís (2)
Soldered 
Connection
Harness 
P/Jís (2)
High 
Voltage 
P/Jís (2)Screws (3)
High Volt-
age P/J
Ground 
Wire 
						

							6/02
4-6DC1632/2240
REP 1.7, REP 1.8
Prelaunch Training/Review Repairs and Adjustments
REP 1.7 T5 or T7 High Voltage Power SuppliesParts List on  PL 9.1
Removal1. Perform NVRAM Save.
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
2. Remove Rear Cover (REP 14.2).
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
3. Remove High Voltage Power Supply Chassis (REP 1.6).
4. Remove High Voltage Power Supplies from Chassis.
ï T5 HVPS (Detack/2nd BTR) is power supply toward machine rear.
ï T7 HVPS (Developer Bias and Charge) is power supply toward machine front.
REP 1.8 I/F (Interface) PWBParts List on  PL 9.1
Removal1. Perform NVRAM Save.
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
2. Remove Right Cover (REP 14.3). 
3. Remove Top Cover (REP 14.1).
4. Remove Rear Cover (REP 14.2).
5. Pivot down T5 T7 HVPS Chassis (REP 1.6). 
CAUTION
PWBís can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
6. Remove ESS Chassis (REP 1.3).
7. Remove Main PWB Interface PWB (Figure 1). 
a. Loosen Screws (2).
b. Lift Main PWB Interface PWB until Harness P/Jís (11) can be disconnected.
c. Remove Main PWB Interface PWB from chassis
Figure 1 Removing Interface PWB
Screws (2)
Harness 
P/Jís (11)