HP LaserJet Pro 100 Service Manual - Page 105

General circuit diagram

Figure 2-5

General circuit diagram

A

6

5

4

3

B

C

D

TP

TP

11

11

SL

M

M

M

11

11

M

M

SL

/BDI

+3.3T

SGND

LDPWM

SGND

SGND

VDO

/VDO

SCLK

/TOP

/BDO

SGND

/VDI

ROTMBN

ROTMA

ROTMAN

FSRMB

FSRMBN

FSRMA

FSRMAN

SGND

PGND (BL)

RLD-

FSRD+

FREQSNS

LVT100V

+3.3R

+3.3R

SGND

SGND

PISNS

SGND

FEEDSLD

+3.3T

ITBTOPSNS

DNSPWM

DNSGAIN0

DNSGAIN1

SGND

SGND

SC

/CCRT

VDI

FSRD-

SGND(BL)

+3.3T(R)

LOOPSNS

SGND

SLPWUP

ROTMB

VIN(V)

DNSS

+24V

SGND

+24B

+24B

/MAINMDEC

/MAINMFG

/MAINMACC

MAINMFR

GNDB

GNDB

LDCNT0

LDCNT1

SGND

+24R (R)

MAINTH

SGND

PWSV

/REM3V V

RLD+

SGND

+3.3T

+3.3V

FEEDMB

FEEDMBN

FEEDMAN

FEEDMA

TR2ICLSLD

+24V

PGND

PGND

+24B

+24B

ROTHPSNS

SGND

+3.3T

/MAINMACC

MAINMFR

/MAINMDEC

/MAINMFG

+24V

PWSW

+24V

/SCNACC

/SCNDEC

PGND

VIN

CVSS

POUTSNS(Y)

FU LIVE(BK)

FU NEUTRAL(W)

FU LIVE(W)

Laser Driver PCA

Scanner Ass’y

SGND

FU NEUTRAL(BK)

FU LIVE(BK)

FU NEUTRAL(W)

+24R

FEEDSLD

LIVE1 (BK)

NEUTRAL1 (W)

DOORSNS_R

DNSP

ITBTOPPWM

Density/ITBTOP

Sensor

FUSER POWER

SUPPLY PCA

ASS’Y

E-label

E-label

100V

200V

Power Switch

PCA

ITB Ass’y

Inlet

PWSNS(GY)

DVSS(R)

SGND(Y)

+3.3T(BL)

FSRPRESNS(GY)

Formatter

Engine Controller Ass’y

N.C.

1

2

J4

18 17 16 15 14 13 12 11 10 9

8

2

3

4

5

6

1

7

19

J109

TB2B

SL2

3

2

1

J606

2

1

H801A

2

1

H801B

2

1

J2B

2

1

J2A

J1001

SR6

2

1

J205

2

1

J7L

J7DH

4

J7D

SR3

1

2

3

J601

M2

M1

SR7

2

1

J8D

J8DH

2

3

1

J201

2

3

1

J303

TB1A

1

3

2

J302A

J402

J401

1

2

3

4

5

6

7

J119

J3

J103

M5

1

2

3

4

5

6

7

8

J705

M4

2

1

J115D

J115DH

M3

2

3

1

J302B

SR2

SR1

SOLD3

SOLD4

1

2

J8L

4

3

2

1

J802

SL1

2

1

J115L

1

2

3

J607

10 9

8

2

3

4

5

6

1

7

J706

1

2

3

4

J701

1

2

3

4

J703

6

5

4

3

2

1

J112

1

2

3

4

5

6

J107

SW1

1

2

TH801

9

2

1

J118

J206

J104

8

7

6

5

4

3

2

1

J110

J801

SOLD1

SOLD2

1

2

TP1A

2

1

TP1B

3

2

1

J106

TB2A

J9002

J9001

J8002

J8003

J9003

J9006

J9005

J9004

SOLD7

TB1B

2

1

J204

SR5

6

5

4

3

2

8

9

J130

4

3

2

1

J702

1

2

3

4

5

6

7

8

J704

J8004

SOLD9

SOLD10

9

8

2

3

4

5

6

1

7

J611

17 16 15 14 13 12 11 10 9

8

2

3

4

5

6

1

7

J108

J8001

2

1

J140

1

2

J128

4

1

2

3

5

6

7

8

9

10

11

4

1

2

3

5

6

7

8

9

10

11

SOLD8

11

10

8

7

6

5

3

2

1

4

11

10

9

8

7

6

5

3

2

1

4

2

3

4

5

6

1

7

J203

N.C.

7

6

5

4

3

2

1

Low-voltage Power Supply Ass’y

11

11

J991

J990

9

11

10

8

7

6

5

3

2

1

4

11

10

9

8

7

6

5

3

2

1

4

11

11

J993

J992

9

11

10

8

7

6

5

3

2

1

4

11

10

9

8

7

6

5

3

2

1

4

9

11

10

8

7

6

5

3

2

4

21

20

19

18

17

16

14

13

12

15

1

22

22

22

J995

J994

20

22

21

19

18

17

16

14

13

15

10

9

8

7

6

5

3

2

1

4

12

11

SR4

3

4

2

1

3

4

2

1

3

4

2

1

J6

J152

Control panel

6

5

4

3

2

1

5

4

3

2

1

J101A

J102A

J901

1

2

3

Automatic

document

feed

Scanner

1

2

1

7

ENWW

Tools for troubleshooting

87

Section	Page
Removal and replacement	19
Introduction	20
Removal and replacement strategy	20
Electrostatic discharge	21
Required tools	21
Service approach	22
Before performing service	22
After performing service	22
Post-service test	22
Product verification test	22
Parts removal order	23
Removal and replacement procedures	25
Print cartridges	25
Imaging drum	27
Input tray	29
Secondary transfer roller	30
Separation pad assembly	31
Pickup roller	32
Remove the pickup roller assembly	33
Covers and document feeder	34
Right cover	34
Left cover	35
Document feeder	36
Remove the document feeder	36
Document feeder hinges	39
Remove the document feeder hinges	39
Top door, rear-top cover, and delivery cover	40
Remove the top door, rear-top cover, and delivery cover	40
Reinstall the top door, rear-top cover, and delivery cover	43
Rear door assembly	45
Remove the rear door assembly	45
Rear-lower cover	46
Remove the rear-lower cover	46
Control panel	47
Remove the control panel	47
Left-front cover	49
Remove the left-front cover	49
Front door	51
Remove the front door	51
Inner cover	53
Remove the inner cover	53
Main assemblies	56
Formatter PCA (base model)	56
Remove the formatter PCA (base model)	56
Formatter and wireless PCA (plus model)	58
Remove the formatter and wireless PCA (plus model)	58
Fuser power supply	60
Remove the fuser power supply	60
ITB assembly	61
Remove the ITB assembly	61
Fuser delivery assembly	71
Remove the fuser delivery assembly	72
Engine controller assembly	76
Remove the engine controller assembly	76
Installing a replacement engine controller assembly	80
Low-voltage power supply assembly	81
Remove the low-voltage power supply assembly	81
Reinstall the low-voltage power supply	86
Installing a replacement low-voltage power supply	86
Document feeder components	87
Document feeder input tray	87
Document feeder cover	88
Document feeder core	90
Remove the document feeder core	90
Post scan pinch rollers	92
Remove the post scan pinch rollers	92
Document feeder base assembly	93
Remove the document feeder base assembly	93
Solve problems	95
Solve problems checklist	96
Step 1: Test print functionality	96
Step 2: Test copy functionality	96
Menu map	97
Troubleshooting processes	98
Determine the problem source	98
Power subsystem	99
Power-on checks	99
Tools for troubleshooting	100
Component diagnostics	100
Component tests	100
Control-panel tests	100
Diagrams	101
Locations of connectors	101
Locations of major components	102
General timing chart	104
General circuit diagram	105
Internal print-quality test pages	106
Print a Diagnostics Page	106
Interpret the Print Quality Page	107
Print-quality troubleshooting tools	108
Repetitive image defects ruler	108
Calibrate the product	108
Control panel menus	109
Setup menu	109
Reports menu	109
System Setup menu	109
Service menu	112
Network Setup menu (network models only)	112
Function specific menus	113
Copy Menu	113
Service mode functions	115
Service menu/Secondary service menu	115
Service menu	115
Secondary service menu	115
Open the secondary service menu	115
Secondary service menu structure	116
Product resets	117
Restore factory settings	117
NVRAM initialization	117
Product updates	117
Parts and diagrams	119
Order parts by authorized service providers	120
Order replacement parts	120
Related documentation and software	120
Supplies part numbers	120
Service parts	121
Whole-unit replacement part numbers	121
How to use the parts lists and diagrams	122
Assembly locations	123
Base product (no optional trays or accessories)	123
Covers, panels, and doors	124
Internal assembly	126
Internal assembly	126
PCAs	128
Scanner and document feeder (ADF) main assemblies	130
Document feeder internal components	132
Alphabetical parts list	134
Numerical parts list	137
Service and support	141
Hewlett-Packard limited warranty statement	142
HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement	144
HP's LaserJet imaging drum limited warranty statement for replacement imaging drums	145
Data stored on the print cartridge and imaging drum	146
End User License Agreement	147
OpenSSL	149
Customer self-repair warranty service	150
Customer support	150
Repack the product	151
Specifications	153
Physical specifications	154
Power consumption, electrical specifications, and acoustic emissions	154
Environmental specifications	154
Regulatory information	155
FCC regulations	156
Declaration of conformity (base models)	157
Declaration of conformity (wireless models)	159
Certificate of Volatility	161
Safety statements	162
Laser safety	162
Canadian DOC regulations	162
VCCI statement (Japan)	162
Power cord instructions	162
Power cord statement (Japan)	162
EMC statement (Korea)	163
Laser statement for Finland	163
GS statement (Germany)	163
Substances Table (China)	164
Restriction on Hazardous Substances statement (Turkey)	164
Additional statements for wireless products	165
FCC compliance statement—United States	165
Australia statement	165
Brazil ANATEL statement	165
Canadian statements	165
European Union regulatory notice	165
Notice for use in France	166
Notice for use in Russia	166
Korean statement	166
Taiwan statement	166

HP LaserJet Pro 100 Service Manual - Page 105

General circuit diagram,

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