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Table 21., Appropriate responses, Commands

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Table 21. Appropriate responses Commands (NSF) (CSI) DIS (NSC) (CIG) DTC (PWD) (SEP) (CIG) DTC (TSI) DCS (TSI) (NSS) (PWD (SUB) (TSI) DCS CTC (EOR-NULL) Any one of the following: l (EOR-EOP) l (EOR-EOM) l (EOR-PRI-MPS) l (EOR-PRI-EOP) l (EOR-PRI-EOM) Any one of the following: l MPS l EOP l EOM l (PRI-MPS) l (PRI-EOP) l (PRI-EOM) (PPS-NULL) Any one of the following: l (PPS-MPS) l (PPS-EOP) l (PPS-EOM) l (PPS-PRI-MPS) l (PPS-PRI-EOP) l (PPS-PRI-EOM) (RR) DCN Comments Appropriate responses Identifying capabilities: from a manual receiver (NSC) (CIG) DTC or an auto-answer unit (TSI) DCS (NSF) (CSI) DIS (CRP) (TSI) (NSS) (PWD) (SEP) (CIG) DTC (PWD) (SUB) (TSI) DCS Mode setting command: from calling unit (TSI) DCS (NSF) (CSI) DIS Poll operation (CRP) (TSI) (NSS) Mode setting command: from manual transmitter or automatic receiver CFR FTT (NSC) (CIG) DTC This command is always followed by phasing/ (NSC) (CIG) DTC training. Mode setting command: from the transmitter to (CTR) the receiver (CRP) Indicates the next block transmission from the (ERR) transmitter to the receiver (RNR) (CRP) The receiver (ERR) (RNR) PIN (CRP) Post-message commands MCF RTP RTN PIP PIN (CRP) Post-message command for a partial page from the transmitter to the receiver (PPR) MCF (RNR) (CRP) Post-message commands for a complete page (PPR) from the transmitter to the receiver MCF (RNR) PIP PIN (CRP) Ask for the status of the receiver: from the transmitter to the receiver Phase E command (RNR) (ERR) MCF PIP PIN (CRP) None 202 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

202

Chapter 6 - Troubleshooting

Table 21.

Appropriate responses

Commands

Comments

Appropriate responses

(NSF) (CSI) DIS

Identifying capabilities: from a manual receiver

or an auto-answer unit

(NSC) (CIG) DTC

(TSI) DCS

(NSF) (CSI) DIS

(CRP) (TSI) (NSS)

(PWD) (SEP) (CIG) DTC

(PWD) (SUB) (TSI) DCS

(NSC) (CIG) DTC

Mode setting command: from calling unit

(TSI) DCS

(NSF) (CSI) DIS

(PWD) (SEP) (CIG) DTC

Poll operation

(CRP) (TSI) (NSS)

(TSI) DCS

(TSI) (NSS)

Mode setting command: from manual

transmitter or automatic receiver

CFR

FTT

(NSC) (CIG) DTC

(PWD (SUB) (TSI) DCS

This command is always followed by phasing/

training.

(NSC) (CIG) DTC

CTC

Mode setting command: from the transmitter to

the receiver

(CTR)

(CRP)

(EOR-NULL)

Indicates the next block transmission from the

transmitter to the receiver

(ERR)

(RNR)

(CRP)

Any one of the following:

(EOR-EOP)

(EOR-EOM)

(EOR-PRI-MPS)

(EOR-PRI-EOP)

(EOR-PRI-EOM)

The receiver

(ERR)

(RNR)

(CRP)

Any one of the following:

MPS

EOP

EOM

(PRI-MPS)

(PRI-EOP)

(PRI-EOM)

Post-message commands

MCF

RTP

RTN

PIP

(CRP)

(PPS-NULL)

Post-message command for a partial page

from the transmitter to the receiver

(PPR)

MCF

(RNR)

(CRP)

Any one of the following:

(PPS-MPS)

(PPS-EOP)

(PPS-EOM)

(PPS-PRI-MPS)

(PPS-PRI-EOP)

(PPS-PRI-EOM)

Post-message commands for a complete page

from the transmitter to the receiver

(PPR)

MCF

(RNR)

PIP

(CRP)

(RR)

Ask for the status of the receiver: from the

transmitter to the receiver

(RNR)

(ERR)

MCF

PIP

(CRP)

DCN

Phase E command

None