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HP 3015 Service Manual - Page 89

Basic sequence of operation, Period, Purpose, Remarks, Scanner, Bulb warming up - firmware

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Basic sequence of operation The microprocessor (CPU) on the ECU controls the operation sequence of the printer. The following events take place during normal printer operation: Table 4-1. HP LaserJet 3015 basic sequence of operation Period Purpose Remarks WAIT. After the product is turned To perform the firmware on until READY appears on the initialization. control-panel display. Tests RAM and establishes and communication with the control panel. READY. From the end of the WAIT period until the user initiates action or a fax is received. To keep the product ready to print, copy, scan, or fax. CALIBRATION. From the time To compensate for variables in the copy, scan, or fax button is the scanning system. pressed until the STAGE period. This occurs before media moves past the scanner. STAGE. From the end of the CALIBRATION period until the SCAN period. To position the leading edge of the original document at the scanning position. The page feeds partway into the scanner, and then briefly stops. SCAN. From the end of the brief pause during the STAGE period until the EJECT or followingpage STAGE period. To scan one page of the original document. Another STAGE period follows if another page of the original document is present in the ADF. Otherwise, the EJECT period begins. EJECT. From the end of the SCAN period until the original document page is completely ejected from the scanner. To clear the last page of the original document from the scanner. The product returns to the READY period at the end of the EJECT period. Table 4-2. HP LaserJet 3020 and 3030 basic sequence of operation Period Purpose Remarks WAIT. After the product is turned on until the message Scanner Bulb warming up appears on the control-panel display. To perform the firmware initialization. Tests RAM and establishes communication with the control panel. AMBIENT LIGHT DETECT. From the end of the WAIT period until the scanner bulb is turned on. To determine the level of ambient light in the environment. The scanner makes a short move toward the ADF. If ambient light is too bright, the scanner moves away from the ADF until it is under the bezel (in shadow). At the end of this period, the scanner bulb is turned on. ENWW Basic sequence of operation 71

Section	Page
Product Information	19
Product configurations	20
HP LaserJet 3015, 3020, and 3030 all-in-one products	20
HP LaserJet 3015 all-in-one product	21
HP LaserJet 3020/3030 all-in-one product	21
Product features	22
Overview of products	23
Hardware components	23
Product identification	25
Model and serial numbers	25
Product specifications	26
Physical specifications	26
Environmental specifications (all models)	26
HP LaserJet 3015 performance specifications	26
HP LaserJet 3020/3030 performance specifications	28
Electrical specifications (all models)	30
Acoustic emissions (all models)	30
Skew specifications (all models)	30
HP LaserJet 3030 fax capabilities	31
HP LaserJet 3015, 3020, and 3030 all-in-one battery	32
Warranty statement	33
HP’s Premium Protection print-cartridge warranty	34
Extended warranty	35
Print-cartridge information	36
Refilled print cartridges	36
HP LaserJet printing supplies	36
HP Printing Supplies Returns and Recycling Program information	36
FCC regulations	38
Telephone Consumer Protection Act (United States)	40
IC CS-03 requirements	41
Declaration of Conformity	42
Safety statements	43
Laser safety statement	43
Canada DOC regulations	43
Laser statement for Finland	44
Korean EMI statement	44
Australian EMC requirements	44
Regulatory information for the European Union countries/regions	45
Operation	47
Operating environment	48
Identifying the control-panel components	49
Control-panel menu structure	51
To use the control-panel buttons	51
To print the control-panel menu structure	51
Product media specifications	55
Main input tray (all models)	55
Automatic document feeder (ADF) specifications	56
To gain access to the optimizing feature	56
Guidelines for using media	57
Paper and transparencies	57
Common media problems table	57
Labels	58
Envelopes	58
Card stock and heavy media	59
Loading media	61
Media input tray	61
Priority input tray	61
Specific types of media	61
Media information for ADF originals	61
Media information for the flatbed (HP LaserJet 3020 and 3030)	62
Loading originals to copy or scan	62
Loading originals into the LJ 3020 and 3030 ADF input tray	63
Loading originals onto the LJ 3020 and 3030 flatbed scanner	64
Maintenance	65
Life expectancies of parts that wear	66
Scanner calibration	67
Cleaning the product	68
To clean the print path	68
Cleaning the glass	68
Cleaning the print-cartridge area	72
To cleaning the print-cartridge area (all models)	72
Cleaning the printer pickup roller (all models)	73
Cleaning the printer separation pad (all models)	74
User replaceable parts	75
Printer pickup roller (all models)	75
Printer separation pad (all models)	77
Printer main input tray (all models)	78
HP LaserJet 3015 ADF pickup roller	79
HP LaserJet 3015 ADF separation pad set	80
HP LaserJet 3015 ADF input tray	80
HP LaserJet 3015 ADF output bin	81
HP LaserJet 3020 and 3030 ADF pickup roller	81
HP LaserJet 3020 and 3030 ADF separation pad	84
HP LaserJet 3020 and 3030 control-panel bezel	84
Operational overview	87
Basic functions (all models)	88
Basic sequence of operation	89
Formatter system	93
Central processing unit	93
Line interface unit (HP LaserJet 3015 and 3030 only)	93
Standard boot process	93
RAM	94
Parallel interface or universal serial bus (USB) interface	94
Control panel	94
EconoMode	94
MEt	95
Enhanced I/O	95
PJL overview	95
Printer functions (all models)	96
Engine control system (engine control unit and power-supply assembly)	96
Image-formation system	101
Print cartridge	102
Printer paper-feed system	102
Jam detection in the printer	103
HP LaserJet 3015 all-in-one unique components	105
Basic operation	105
HP LaserJet 3020 and 3030 all-in-one unique components	111
Scanner and ADF functions and operation	111
Fax functions and operation (HP LaserJet 3015 and 3030 only)	114
PSTN operation	114
The fax subsystem	114
Formatter in the fax subsystem	114
LIU in the fax subsystem	114
Fax page storage in flash memory	117
Removal and replacement	119
Removal and replacement strategy	121
Required tools	121
Before performing service	121
After performing service	122
Parts removal order	122
HP LaserJet 3015 all-in-one	125
Link assemblies and scanner support frame springs	125
Scanner side covers	128
Separation-pad set	129
Control-panel bezel	130
Control-panel assembly	131
Media lever and media lever torsion spring	132
Separation pad assembly	133
Scanner assembly	136
Scanner assembly top cover	144
Top-cover assembly	147
Pickup roller	148
White platen	149
HP LaserJet 3020 and 3030 all-in-one	151
ADF input tray	151
Flatbed lid	152
Link assemblies and scanner support frame springs	154
Control-panel bezel	157
Control-panel assembly	157
ADF separation pad	158
ADF input-tray flag	159
ADF pickup roller	160
ADF scanner glass	161
Scanner assembly	163
Printer (product base)	171
Printer separation pad	172
Print cartridge	172
Printer pickup roller	174
Media input tray	176
Transfer roller	177
Printer side covers	179
Print-cartridge door	181
Rear cover and fuser cover	182
Front cover	183
Installing the scanner cushions	185
Speaker assembly	186
Power supply	187
Formatter and line interface unit (LIU)	189
Scanner support frame	193
Engine controller unit	195
Laser/scanner assembly	199
Main motor	200
Fuser	202
Paper-pickup assembly	204
Troubleshooting	205
Basic troubleshooting	206
Control-panel messages	211
Alert and warning messages	211
Critical error messages	219
Event-log codes	222
Solving image-quality problems	224
Checking the print cartridge	224
Solving print image-quality problems	224
Solving scanning (copying) image-quality problems	234
Repetitive image defect ruler	240
Solving paper-feed problems	241
Jams occur in the printer	241
Solving print paper-feed problems	243
Jams occur in the automatic document feeder (ADF)	245
Solving scanner (copier) paper-feed problems	247
Solving problems with digital subscriber line (DSL) connections	249
Connecting additional devices	249
Functional checks	253
Control-panel test	253
Half self-test functional check	253
Drum rotation functional check	255
High-voltage contacts check	256
Updating the firmware code	258
Troubleshooting tools	259
Printing a configuration report, demonstration page, or menu structure	259
Printing all fax reports at once (HP LaserJet 3015 and 3030 only)	259
T.30 protocol trace (HP LaserJet 3015 and 3030 only)	259
Service-mode functions	280
Secondary service menu	280
Developer’s menu	281
Adjusting the country/region code parameters	282
Soft reset	283
NVRAM init	283
System settings for localized products	284
Printer job language (PJL) software commands	286
Main wiring	287
Component locations, HP LaserJet 3015 all-in-one	290
Component locations, HP LaserJet 3020 and 3030 all-in-one	294
Component locations, HP LaserJet 3015, 3020 and 3030 printer (product base)	295
Parts and diagrams	299
Ordering parts and supplies	300
Parts that wear	300
Parts	300
World-wide customer support	300
Accessories	302
Common hardware	302
How to use the parts lists and diagrams	303
HP LaserJet 3015 scanner assembly	304
HP LaserJet 3020/3030 scanner assembly	314
HP LaserJet 3015/3020/3030 printer base	322
Alphabetical parts list	338
Numerical parts list	344

Match case Limit results 1 per page

Basic sequence of operation

The microprocessor (CPU) on the ECU controls the operation sequence of the printer. The

following events take place during normal printer operation:

Table 4-1. HP LaserJet 3015 basic sequence of operation

Period

Purpose

Remarks

WAIT. After the product is turned

on until

EADY

appears on the

control-panel display.

To perform the firmware

initialization.

Tests RAM and establishes and

communication with the control

panel.

READY. From the end of the

WAIT period until the user

initiates action or a fax is

received.

To keep the product ready to

print, copy, scan, or fax.

CALIBRATION. From the time

the copy, scan, or fax button is

pressed until the STAGE period.

To compensate for variables in

the scanning system.

This occurs before media moves

past the scanner.

STAGE. From the end of the

CALIBRATION period until the

SCAN period.

To position the leading edge of

the original document at the

scanning position.

The page feeds partway into the

scanner, and then briefly stops.

SCAN. From the end of the brief

pause during the STAGE period

until the EJECT or following-

page STAGE period.

To scan one page of the original

document.

Another STAGE period follows if

another page of the original

document is present in the ADF.

Otherwise, the EJECT period

begins.

EJECT. From the end of the

SCAN period until the original

document page is completely

ejected from the scanner.

To clear the last page of the

original document from the

scanner.

The product returns to the

READY period at the end of the

EJECT period.

Table 4-2. HP LaserJet 3020 and 3030 basic sequence of operation

Period

Purpose

Remarks

WAIT. After the product is turned

on until the message

Scanner

Bulb warming up

appears on

the control-panel display.

To perform the firmware

initialization.

Tests RAM and establishes

communication with the control

panel.

AMBIENT LIGHT DETECT.

From the end of the WAIT period

until the scanner bulb is turned

on.

To determine the level of

ambient light in the environment.

The scanner makes a short

move toward the ADF. If

ambient light is too bright, the

scanner moves away from the

ADF until it is under the bezel (in

shadow). At the end of this

period, the scanner bulb is

turned on.

ENWW

Basic sequence of operation