HP 4 Plus Manual

							Accessing the SIMM Slots
Please refer to Chapter 6, Removal and Replacement, for
instructions on removing the SIMMS door to access the slots.
Note that access to the SIMM slots are slightly different for the
various printer models.
Installing the SIMM Boards
1Through the open door, you can see the four SIMM board slots
(see previous Figure 3-23). For easiest installation, fill the
slots from right to left, starting with slot 1 (see the diagram on
the SIMM slots door).
2Remove the SIMM board from the antistatic package.  Hold
the board with your forefingers on the side edges and your
thumbs against the back edge. Turn the board so the notch on
one end is on the bottom and the metal teeth face the slot (see
Figure 3-24. 
Figure 3-24 Positioning the SIMM board with the notch at the bottom.
Configuration 3-55 
						

							3Hold the SIMM board at a 30-degree angle to the slot and
push the edge of the board evenly and firmly into the slot (see
Figure 3-25 callout (A) ).
4Rotate the SIMM board to the right until the board  “clicks”
into the metal locking tabs, securing the board into place (see
Figure 3-25 callout  (B)).
5Gently rock the SIMM board back and forth. If it is seated
correctly, it will not lift away from the slot. If it lifts up, you
have not pushed it firmly enough into the slot. Try again.  
6Replace the SIMM door and screws.    
7Replace the right side cover. 
8Close the top front cover and gently press down on each end
until the cover is completely seated.
Figure 3-25 Installing the SIMM Board
3-56 Configuration 
						

							Testing a SIMM Board
Use the procedures below to print a self-test page to verify SIMM
board installation. Procedures are given for both memory and
PostScript SIMMs.
Memory SIMM
NoteFor the LaserJet 5/5M/5N, the 
On Line key has
been replaced by the Go  key.  The  Enter key has
been replaced by the Select key.
Running a Self Test Printout
1Plug in the power cord and turn ON the printer. 
2After a few seconds, 00 READY  should appear in the control
panel display.  If an error message appears, refer to
“ Troubleshooting a SIMM Board ” later in this chapter.
3Press  [On Line]  to take the printer off line.
4Press [Menu]  until \fES\f MENU  appears in the control panel
display.
5Press  [Item] until  SELF \fES\f  appears in the control panel
display. 
6Press  [Enter]  to print a self test.  
7Press [On Line]  after the self test printed.
Locate “RAM SIZE” on the self-test printout.  This is the amount
of printer memory now installed in the printer.  
Configuration 3-57 
						

							Personality SIMM
(PostScript)
A personality (printer language) SIMM installation can be
verified as outlined below (a PostScript SIMM is used in this
example).
NoteFor the LaserJet 5/5M/5N, the 
On Line key has
been replaced by the  Go key.  The  Enter key has
been replaced by the  Select key.
 
1Plug in the power cord and turn ON the printer.
2After a few seconds, the on line indicator should light and  00
READY  should appear in the control panel display.  If an error
message appears, refer to  “Troubleshooting a SIMM Board ”
following.
3Press  [On Line   to take the printer off line.
4Press [Menu]  until JOB MENU   appears in the control panel
display.
5Press  [Item] until  PERSONALI\fY=AU\fO*,  the default, appears in
the control panel display.
6Press  [+] until  PERSONALI\fY=PS  appears in the display.  This
indicates that your printer recognizes that PostScript is
installed.  If  PERSONALI\fY=PS  does not appear, check the
SIMM installation.
7Press  [On Line]  to return the printer on line.
3-58 Configuration 
						

							Troubleshooting a SIMM Board
For more information about the service/error messages below, see
Chapter 7, Troubleshooting .
Service / Error Messages
One of two messages can be generated when your printer is
checking its SIMM internal memory. 
6\b.X SERVICE
where X = 1, 2, 3, or 4
This error indicates a SIMM parity error. The x indicates which
SIMM slot generated the error. If these messages appear first,
check the HP part number to make sure you have the right SIMM
board. 62.X ERROR
where X = 0, 1, 2, 3, 4, or 5
This error indicates your printer identified a problem while
checking memory.
If x=0, the problem is in internal Read Only Memory (ROM) on
the Formatter. 
If x = 1, 2, 3, or 4, the problem is in SIMM slot 1, 2, 3, or 4. 
If x = 5, the problem is in an external cartridge installed in the
printer.
Refer to chapter 7 for more information.
Configuration 3-59 
						

							3-60 Configuration 
						

							4
Preventive Maintenance 
Introduction  
The printer requires minimum routine maintenance. Use this
chapter for information on:
•Service Checkpoints. These are the items that must be
cleaned and checked when the Toner Cartridge is replaced, or
before performing periodic maintenance.
•Toner Cartridge information, such as:
•Storing and installing the Toner Cartridge
•Refilled Toner Cartridges
•16 TONE\b LOW  message
•Required periodic maintenance on:
•Transfer roller
•Separation pads
•Paper pickup rollers
Preventive Maintenance   4-1 
						

							Life Expectancy of Consumables      
Always inspect the components listed in Table 4-1 for wear when
servicing the printer. Replace these components as needed, based
on printer failures or wear, not strictly on usage.
DESCRIPTION QTY EST. LIFE(pages)REMARKS
1. Toner Cartridge 1 6800
1When print becomes faint, shake
cartridge to distribute remaining
toner.
2. MP (Tray 1) Pickup Roller Assembly 1 200,000Replace roller and separation pad
together.
3. PC (Tray 2) Pickup Roller 1 200,000Look for glazing and cracks. 
4. Separation Pad
1 200,000Look for glazing and grooves.
Replace together with Pickup
Rollers.
5. Transfer Charging Roller 1 200,000May affect print quality and/or
paper jams.
6. Fuser Assembly
(115 V, 50/60 Hz)
            
Fuser Assembly
(220 V, 50 Hz) 1
  1 200,000
    
 
200,000May affect print quality and/or
paper jams. Look for marks on
rollers.
7. LC (Tray 3) Pickup Roller 1 200,000Look for glazing and grooves.
Replace the Separation Pad.
8. Exhaust Fan
1 25,000 hrs.
Notes:
The estimated Toner Cartridge life is based on A4 or letter size prints with an average
of 5% toner coverage, and with the density setting at 3.
Note For part numbers of the components listed in
Table 4-1, see Chapter 8.
Table 4-1Selected Service Consumables
4-2 Preventive Maintenance  
						

							Service Checkpoints      
This is a fold-out page 3 panels wide.
Figure 4-1 Maintenance Checkpoints
Preventive Maintenance   4-3 
						

							Cleaning Your Printer
When it is time to replace the toner cartridge, perform the
cleaning procedures outlined in Figure 4-1.
4-4 Preventive Maintenance