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HP LaserJet 3200 Service Manual - Page 162

Characters are, only partially, printed also, referred to as, dropouts., Blank s, print

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Table 12. Solving image-quality problems (continued) Problem Characters are only partially printed (also referred to as dropouts). Cause A single sheet of paper is defective. The print density needs to be adjusted. The moisture content of the paper is inconsistent or the paper has moist or wet spots on the surface. The paper was damaged by inconsistent manufacturing processes. A "draft mode" or "economy mode" is selected in the software. Solution Try reprinting the job. Adjust the print density from the control panel. Make sure that the media meets HP's specifications. Make sure that the media meets specifications detailed in HP's media specifications guide. Try a "normal" or "best" setting. Blank pages print occasionally. Page length and margins are not set correctly for the paper size. Your product is feeding two or more sheets of paper at a time because the paper is difficult to separate. If you are printing on small-sized paper and the page is blank, try printing on larger paper to see where the image is printing. Adjust the margins accordingly. Remove the paper from the paper input bin and align the edges of the paper. "Break" the ream of paper by curving it into an upside-down u-shape. Try turning the paper around to feed the other end first, or use a different type of paper. Blank pages are always printing. Your software application is sending an extra page-eject command. The toner cartridge was improperly installed. The toner cartridge is completely out of toner. Discontinuity exists in the high-voltage contact points. There is a problem in a part of the product. Clean the pickup roller and the separation pad. If the problem persists, replace the separation pad or subpads. Check your software's printing configuration information. If you are using a word-processing program, check for a natural page break and a forced page break that are close to each other. Make sure you removed the entire length of the sealing tape from the toner cartridge before you installed it. Replace the toner cartridge. Perform the high-voltage power supply check (see page 169). Print a self-test page. If the page is blank, follow the steps in "Basic troubleshooting" on page 146 to isolate the problem. Replace the laser/scanner or the ECU as needed. 160 Chapter 6 - Troubleshooting EN

Section	Page
Contents	5
Figures	9
Tables	13
Product information	15
Chapter contents	15
Introduction	16
Hardware description	16
Firmware description	17
Product specifications	18
Model and serial numbers	21
Product overview	22
Warranty statement	25
Hewlett-Packard limited warranty statement	25
Declaration of Conformity	27
Toner cartridge information	28
Additional product stewardship	29
Environmental conformity	29
Installation and operation	31
Chapter contents	31
Operating environment	32
Identifying product components	33
Control panel lights and keys	33
Using the control panel menu structure	35
Control panel error messages	37
Selecting media	45
Selecting media to print	45
Selecting media to fax, copy, or scan	46
Loading media	47
Loading media to fax, copy, or scan	47
Loading media to be printed	50
Selecting the output path	52
Maintenance	53
Chapter contents	53
Life expectancies of consumables	54
Cleaning and maintaining the equipment	55
Cleaning the product	56
Cleaning the scanner path	59
Recalibrating the scanner	61
User-replaceable parts	62
Operational overview	63
Chapter contents	63
Basic functions	64
Optical system	65
Formatter system	67
Control panel	68
Draft mode	68
MEt	68
Enhanced I/O	68
Page Protect	69
PJL Overview	69
Printer functions	70
Engine control unit/power system	71
Image formation system	76
Printer paper feed system	79
Basic sequence of operation (formatter-to-printer)	84
Removal and replacement	87
Chapter contents	87
Removal and replacement strategy	89
Required tools	89
Parts removal order	90
Covers	91
DIMMs	91
Back cover	92
Right side cover	93
Left side cover	95
Internal paper guide	96
Top cover	97
Document scanner assemblies	98
Printer door	98
Document scanner assembly	102
Contact image sensor	105
Document scanner pickup roller	107
Document scanner separation pad	108
Document scanner motor	109
Upper guide assembly	110
Control panel/scanner board	114
Internal assemblies	115
Laser/scanner assembly	115
Output roller	116
Delivery assembly	118
Paper exit-sensor flag	120
Fusing element	121
Gear train motor	126
Solenoid	129
Pressure roller	130
Transfer roller	132
Pickup roller	133
Paper-pickup assembly	134
Kick plate	136
Separation pad	137
Bottom assemblies	139
Formatter pan	139
Formatter and LIU	140
ECU pan	141
Paper-feed assembly	143
Troubleshooting	147
Chapter contents	147
Basic troubleshooting	148
Errors	151
Image formation troubleshooting	157
Checking the toner cartridge	157
Solving image-quality problems	158
Solving paper feed problems	164
Functional checks	167
Engine test	167
Half-self-test functional check	168
Drum rotation functional check	169
Heating element check	170
High-voltage power supply check	171
Paper path check	173
Service mode functions	174
Secondary service menu	174
Developer’s menu	175
Diagnostic mode	183
NVRAM init	185
PJL software commands	185
Troubleshooting tools	188
Internal reports	188
Printing all fax reports at once	189
T.30 protocol trace	190
Repetitive image defect ruler	209
Document scanner recalibration	210
Main wiring	212
Locations of connectors	214
Parts and diagrams	217
Chapter contents	217
Ordering parts and supplies	218
Parts	218
Parts exchange program	219
Related documentation and software	219
Consumables	219
Accessories	220
How to use the parts lists and diagrams	221
Common hardware	222
Assembly locations	223
Covers	224
Trays and bins	225
External covers and panels	227
Document scanner assemblies	228
Document scanner assemblies	229
Document feeder	231
Upper guide assembly	233
Internal assemblies	234
Internal components (1 of 4)	235
Internal components (2 of 4)	237
Internal components (3 of 4)	239
Internal components (4 of 4)	241
Feed assembly	243
Electrical components	245
Alphabetical parts list	246
Numerical parts list	251
Index	257
A	257
B	257
C	257
D	258
E	258
F	259
G	259
H	260
I	260
J	260
K	260
L	260
M	261
N	261
O	261
P	261
Q	263
R	263
S	263
T	264
U	265
V	265

Match case Limit results 1 per page

160

Chapter 6 - Troubleshooting

Characters are

only partially

printed (also

referred to as

dropouts).

A single sheet of paper is defective.

Try reprinting the job.

The print density needs to be adjusted.

Adjust the print density from the control

panel.

The moisture content of the paper is

inconsistent or the paper has moist or

wet spots on the surface.

Make sure that the media meets HP’s

specifications.

The paper was damaged by inconsistent

manufacturing processes.

Make sure that the media meets

specifications detailed in HP’s media

specifications guide.

A “draft mode” or “economy mode” is

selected in the software.

Try a “normal” or “best” setting.

Blank pages

occasionally.

Page length and margins are not set

correctly for the paper size.

If you are printing on small-sized paper

and the page is blank, try printing on

larger paper to see where the image is

printing. Adjust the margins accordingly.

Your product is feeding two or more

sheets of paper at a time because the

paper is difficult to separate.

Remove the paper from the paper input

bin and align the edges of the paper.

“Break” the ream of paper by curving it

into an upside-down u-shape. Try turning

the paper around to feed the other end

first, or use a different type of paper.

Clean the pickup roller and the

separation pad. If the problem persists,

replace the separation pad or subpads.

Your software application is sending an

extra page-eject command.

Check your software’s printing

configuration information. If you are

using a word-processing program, check

for a natural page break and a forced

page break that are close to each other.

Blank pages

are always

printing.

The toner cartridge was improperly

installed.

Make sure you removed the entire length

of the sealing tape from the toner

cartridge before you installed it.

The toner cartridge is completely out of

toner.

Replace the toner cartridge.

Discontinuity exists in the high-voltage

contact points.

Perform the high-voltage power supply

check (see page 169).

There is a problem in a part of the

product.

Print a self-test page. If the page is

blank, follow the steps in “Basic

troubleshooting” on page 146 to isolate

the problem. Replace the laser/scanner

or the ECU as needed.

Table 12.

Solving image-quality problems (continued)

Problem

Cause

Solution