HP P 1100 Service Manual

							Tools for troubleshooting
Individual component diagnostics
Engine diagnostics
Printing test pages helps you determine whether or not the product engine and the formatter are
functioning. If the formatter is damaged, it might interfere with the engine test. If the engine-test page
does not print, try removing the formatter and then performing the engine test again. If the engine test
is then successful, the problem is almost certainly with the formatter.
NOTE:Information pages also can be used to solve product issues. For information about printing
information pages, see the product user guide.
Engine-test button
NOTE: The product has a firmware engine-test button that is activated by opening and closing the
print-cartridge door in a specific pattern.
1. Make sure that paper is correctly loaded in the tray.
2. Make sure that the output bin tray extension is in the open position.
3. Turn the product on. Wait for the product to reach the ready state.
4. Open, and then close the print-cartridge door five times at an interval of about two seconds to start
the engine-test.
5. If the engine test is successful, an engine-test page prints with a series of vertical lines across the
page.
Figure 3-1   Sample engine test page
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							Components tests
Drum rotation functional check The photosensitive drum, located in the print cartridge, must rotate for the print process to work. The
photosensitive drum receives its drive from the main drive assembly.
NOTE:This test is especially important if refilled print cartridges have been used.
1.Open the print-cartridge door.
2. Remove the print cartridge.
3. Mark the drive gear on the cartridge with a felt-tipped marker. Note the position of the mark.
4. Replace the print cartridge and close the print-cartridge door. The startup sequence should rotate
the drum enough to move the mark.
5. Open the print-cartridge door and inspect the gear that was marked in step 3. Verify that the mark
moved.
If the mark did not move, inspect the main drive assembly to make sure that it is meshing with the print
cartridge gears. If the drive gears appear functional and the drum does not move, replace the print
cartridge.
Half self-test functional check The half self-test check determines which printing process is malfunctioning.
1.Print a Configuration page.
2. Open the print-cartridge-door after the paper advances halfway through the product (about five
seconds after the motor begins rotating). The leading edge of the paper should have advanced
past the print cartridge.
3. Remove the print cartridge.
4. Open the print cartridge drum shield to view the drum surface. If a dark and distinct toner image is
present on the drum surface, assume that the first two functions of the electrophotographic process
are functioning (image formation and development). Troubleshoot the failure as a transfer or fusing
problem.
If there is no image on the photosensitive drum, perform these checks:
1. Make sure you removed the entire length of the sealing tape from the print cartridge before you
installed the cartridge.
2. Perform a drum rotation functional check to make sure that the drum is rotating.
3. Make sure that the high-voltage contacts are clean and not damaged.
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							Diagrams
Plug/jack locations
Figure 3-2  Plug/jack locations
2
1
ItemDescription
1USB port
2Power connector
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							Location of connectors
Figure 3-3  Engine controller PCA connectors
ItemDescriptionItemDescription
J101FuserJ551Top sensor PCA
J104Power inletJ552Paper-pickup PCA
J304High voltageJ562Pickup solenoid
J501Test pointJ571Motor drive PCA
J531FormatterJ581Cartridge memory tag
J542Laser/scanner  
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							Locations of major components
Figure 3-4  External view
1
4
5
6
23
7
8
ItemDescriptionItemDescription
1Cancel button (HP LaserJet
Professional P1100w Printer
series only)5Input tray or main-input tray
NOTE:The HP LaserJet
Professional P1100 Printer
series has a single input tray.
The HP LaserJet Professional
P1100w Printer series has a
main-input tray and a priority
input slot.
2Output bin (face-down tray)6Media-end plate
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							ItemDescriptionItemDescription
3Output bin tray extension7Power switch
4Priority input slot
(HP LaserJet Professional
P1100w Printer series only)8Power receptacle
Figure 3-5  Cross section view
1234567
891011
ItemDescriptionItemDescription
1Pressure roller7Priority input slot
(HP LaserJet Professional
P1100w Printer series only)
2Fuser film assembly8Pickup roller
3Delivery roller9Separation pad
4Photosensitive drum10Feed roller
5Print cartridge11Transfer roller
6Laser/scanner  
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							General timing charts
Figure 3-6  General timing diagram
Timing chart two consecutive prints on LTR paper
LSTR
TNIRP
RTNI
YBTS
TIA
W
6 BD Output signal (BDO) STBY
1 TOP sensor (PS751)
2 Fuser delivery sensor (PS701)
3 Print start command (EEC12) Operation
4 Scanner Motor (M2)
5 Laser Diode
12 Pickup solenoid (SL1)
7
Main Motor (M1)
8 Primary Charging Bias
9 Developing Bias
10 Transfer Charging Bias
11 Fuser Heater
18 13
14
15
16
17
19
20
Power switch ON
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							General circuit diagram
Figure 3-7  Circuit diagram; HP LaserJet Professional P1100 Printer seriesA
65 4 3
21
B
C D
GND
SI
SO
TESTJ5014
3
2
1
+24P2
MTRPWM12
J902
21
321
+24P2 ACC
DEC
GND1
2
3
4J903
1 2 3 4 5 6 7 8 9
10 11
J901
1 23
4J1
1234
J8011
23
45
6 7
9
8
VDO
/VDO
+3.3U
/BDIR
GND
CNT0
GND
GND
CNT1
1
2
TAG
12J3
1
23
45
67
8 9
J542
TAGOUT
TAGIN1
2J5811
2
ACH  ACN 2
31
J104
/PISNS
+3.3U GNDJ551123+3.3U GND FSRTH
/PWSNS
/POSNS
J55212345
3 1J751
321 2
32
1
FSRTH
GND2
1J702
321
321
J7015
4
2
1 3
1
2
21
J1011
1
2
21
ACH 
ACN J1012 3
1
2
1HV
+24P2 +24P2GND GND GND
+5R
ACC
DEC
/MTRPWM MFG
+24P2
J571
1
23
45
6 7
89
10 11
J304 FT1
J562
SL
+24U1
2 1
2
4 2 1
7
8
5 3
9
6
10
J53110
1
23
4 5
6 7
8 9GND +3.3VSCLK
VDO /RSTO
GND SC
/VDO /BDO
GND
2
1
SW502
M
M
PS901
M2M1
SW501
TH1
H1
TP1TP
PS702
PS701
PS751 INL101 SL1
SL
Formatter
Laser Drive PCA
BD
sensor Scanner motor
Motor Drive PCA
Main motor
Main-motor rotation number sensor
Laser/scanner unit
Engine Controller PCA
Fuser heater
Thermal fuse
Thermistor
Media-widthsensor
Fuser-delivery
sensor Pickup solenoid
Top sensor
Fuser unit
Paper sensor PCA
Top sensor PCA
Cartridge-door switch
Power switch
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							Figure 3-8  Circuit diagram; HP LaserJet Professional P1100w Printer seriesA
65 4 3
21
B
C D
GND
SI
SO
TESTJ5014
3
2
1
+24P2
MTRPWM12
J902
21
321
+24P2 ACC
DEC
GND1
2
3
4J903
1 2
3 4 5 6 7 8 9 10 11
J901
1 2 3 4J1
1234
J8011
23
45
6 7
9
8
VDO
/VDO
+3.3U
/BDIR
GND
CNT0
GND
GND
CNT1
1
2
TAG
12J3
1
23
45
67
8 9
J542
TAGOUT
TAGIN1
2J5811
2
ACH  ACN 2
31
J104
/PISNS
+3.3U GNDJ551123+3.3U GND FSRTH
/PWSNS
/POSNS
J55212345
3 1J751
321 2
32
1
FSRTH
GND2
1J702
321
321
J7015
4
2
1 3
1
2
21
J1011
1
2
21
ACH 
ACN J1012 3
1
2
1HV
+24P2 +24P2GND GND GND
+5R
ACC
DEC
/MTRPWM MFG
+24P2
J571
1
23
45
6 7
89
10 11
J304 FT1
J562
SL
+24U1
2 1
2
2
1
SW502
7 5 4 3 2 1
10 11 8 6
12 9
J53110
1
23
4 5
6 7
8 9
11
12GND +3.3V SCLK
VDO /RSTO
GND GND SC
/VDO /BDO
GND
7 5 4 3 2 1
10
11 8 6
9
CLK
SDO
LED ENABLE +3.3V
GND INT
CS
SDI
GND
+3.3V10
1
23
4 5
67
89
11
RESET
HOST WAKE
MM
PS901
M2M1
SW501
TH1
H1
TP1TP
PS702
PS701
PS751 INL101 SL1
SL
Laser Drive PCA
BD
sensor Scanner motor
Motor Drive PCA
Main motor
Main-motor rotation number sensor
Laser/scanner unit
Engine Controller PCA
Fuser heater
Thermal fuse
Thermistor
Media-width
sensor
Fuser-delivery
sensor Pickup solenoid
Top sensor
Fuser unit
Paper sensor PCA
Top sensor PCA
Cartridge-door switch
Power switch
Formatter
Wireless PCA
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							Internal print-quality test pages
Cleaning page
If you are experiencing toner specks or dots on the printouts, clean the paper path. This process uses
a transparency to remove dust and toner from the paper path. Do not use bond or rough paper.
NOTE:For best results use a sheet of transparency. If you do not have any transparencies, you can
use copier-grade paper (60 to 163 g/m2 (16 to 43 lb)) that has a smooth surface.
1. Make sure that the product is idle and the ready light  is on.
NOTE: If the product is in the auto-off state, the ready light  is off.
2.Load paper in the input tray.
3. Open the product Properties .
4. Click the Device Settings  tab.
5. In the  Cleaning Page  area, click the Start  button to process the cleaning page.
NOTE:The cleaning process takes about 2 minutes. The cleaning page stops periodically during the
cleaning process. Do not turn the product off until the cleaning process has finished. You might need to
repeat the cleaning process several times to thoroughly clean the product.
Configuration page
The configuration page lists current product settings and properties. It also contains a status log report.
To print a configuration page, do the following:
1. Open the printer driver, and then click the  Properties or Preferences  button.
2. Click the Services  tab, and then, in the  Print Information Pages  drop-down list, click the Config
Page  list item.
3. Click the Print  button.
On wireless models, you can print the configuration page from the product control panel.
▲At the control panel, press and hold the cancel  button until the ready  light starts blinking, and
then release the button.
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