HP 4 Plus Manual

							8
Parts and Diagrams
How To Use the Parts Lists
The figures in this chapter illustrate the major subassemblies
and component parts of the HP LaserJet 4/4M, LaserJet 4 Plus/
4M Plus, and LaserJet 5/5M/5N printers. When ordering an
electrical part, pay special attention that the part chosen has the
correct voltage rating for the machine under repair.
Part numbers with no indicator in the Notes column are stocked
and can be ordered through Hewlett-Packard’s Support Materials
Organization (SMO). Parts marked with an  S in the  Notes column
are special order parts which can be ordered through SMO but
may have an eight-week lead time. 
An alphanumeric index referencing all part numbers is included
at the end of this chapter (see  Parts List, page 8-40).
Note Not all parts are orderable. The parts listed are
the only orderable parts. Parts that have no
reference designator or part number are not
field-replaceable and cannot be ordered through
SMO.
Figures referred to in the tables are placed before the table
throughout the chapter.
Accessory Parts are listed on 8-33. This list includes such items
as the MIO and SIMM cards.
Parts and Diagrams  8-1 
						

							Parts Lists and Illustrations
Figure 8-1a Field-Replaceable Assemblies (1 of 2)
8-2 Parts and Diagrams 
						

							Figure 8-1b Field-Replaceable Assemblies ( 2 of 2)
Parts and Diagrams  8-3 
						

							Part # Ref Exchng #DescriptionFig. #
RG5-0454-000CN
RG5-0879-130CN 1 C2001-69003
C2037-69001 Fusing Ass’y (100/110V)
LaserJet 4  
LaserJet 4 Plus/5 8-10
RG5-0455-000CN
RG5-0880-130CN 1 C2001-69004
C2037-69002 Fusing Ass’y (220/240V)
LaserJet 4
LaserJet 4 Plus/5 8-10
RH7-1151-000CN
RH7-1169-000CN 2Main Motor
LaserJet 4
LaserJet 4 Plus/5 8-4b
RG5-0451-000CN
RG5-0877-000CN
RG5-2195-000CN 3 C2001-69005
C2037-69003
C3916-69005 Paper Feed Assembly
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-6
RB1-2119-000CN
RB1-7907-000CN 4Main Switch Assy
LJ 4 & 4+
LJ 5 8-5 
RG5-0478-000CN
RG5-1076-000CN
RG5-2238-000CN 5 C2001-69010
C2037-69005 Display Ass’y w/o overlay
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-3
RG5-0512-000CN 6 Paper Control PCA8-6a
RG5-0514-000CN 7 Sensor PCA8-6b
RG5-0469-000CN 8 Transfer Guide Assembly 8-1a
RG5-0475-060CN 9 Paper Output Sensor Ass’y 8-9
RG5-0456-000CN
RG5-0886-000C
RG5-2189-000CN 10
Paper Output Assembly
LaserJet 4 
LaserJet 4 Plus
LaserJet 5 8-8
RG5-0511-000CN
RG5-0966-030CN 11 C2001-69002
C2037-69004 DC Controller PCA
LaserJet 4
LaserJet 4 Plus/5 8-1b
RG5-0472-000CN
RG5-0888-000CN
RG5-2199-000CN 12
MP Tray (Tray 1)
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-7 
Table 8-1Field-Replaceable Assemblies
8-4 Parts and Diagrams 
						

							Part # Ref Exchng #DescriptionFig. #
C2085B
C2085E
C3925A 13
PC Tray (Tray 2) (ltr)
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-14
C2085C
C2085F
C3926A 13
PC Tray (Tray 2) (A4)
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-14
RG5-0531-000CN
RG6-2499-000CN 14 C2001-69007
C2037-69006 Power Supply (100/120V)
LaserJet 4
LaserJet 4 Plus/5 8-1a
RG5-0553-000CN
RG5-2500-000CN 14 C2001-69008
C2037-69007 Power Supply (220/240V)
LaserJet 4
LaserJet 4 Plus/5 8-1a
RG5-0449-000CN
RG5-0903-070CN 15 C2001-69006
C2037-69008 Laser/Scanner Ass
’y
LaserJet 4
LaserJet 4 Plus/5 8-1b
C2002-67901
C2038-60004
C3919-67901 16 C2002-69001
C2038-69004
C3919-69001 Formatter PCA
LaserJet 4
LaserJet 4 Plus
LaserJet 5 8-1b
RG5-0513-000CN
RG5-0969-040CN 17 C2001-69009
C2037-69009 High Voltage Power Supply
LaserJet 4
LaserJet 4 Plus/5 8-1a
Table 8-1Field-Replaceable Assemblies (continued)
Parts and Diagrams  8-5 
						

							Figure 8-2 Covers and Panels
8-6 Parts and Diagrams 
						

							Ref Part # NotesDescription 
1 RB1-2143-000CN RB1-3558-000CN
RB1-7885-000CN LJ4
LJ4+ LJ5 MP Tray Extender
2 RB1-2346-000CN RB1-3470-000CN
RF5-1644-000CN LJ4
LJ4+ LJ5 Right Cover
3 RB1-2347-000CN RB1-3471-000CN
RB1-7881-000CN LJ4
LJ4+ LJ5 Left Cover
4 RF5-0533-000CN RF5-0733-000CN
RF5-1645-000CN LJ4
LJ4+ LJ5 Rear Door Assembly
4A RB1-2354-000CN Rear Door Support Strap
4B RB1-2335-000CN RB1-7890-000CN LJ4/4+
LJ5 Rear Door Latch
4C RS5-2219-000CN RS5-2571-000CN LJ4/4+
LJ5 Rear Door Spring
5 RB1-2351-000CN RB1-3559-000CN
RB1-7886-000CN LJ4
LJ4+ LJ5 MP Door
6 RG5-0459-000CN RB1-7889-000CN LJ4/4+
LJ5 Font Door Cover
Right Front Cover
7 RS5-8205-000CN LJ4 Label 110/115V
7 RS5-8916-000CN LJ4 Label 220/240V
8 RB1-3475-000CN LJ4+ Rear Door Retainer
Table 8-2Covers and Panels
Parts and Diagrams  8-7 
						

							Figure 8-3a Top Cover Assembly for LaserJet  4/4+
8-8 Parts and Diagrams 
						

							Ref Part # NotesDescription 
1 RB1-2330-000CN S Spring, Leaf
3 RG5-0458-000CN RG5-0872-000CN LJ4
LJ4+ Upper Cover Assembly
3A RB1-2322-000CN RB1-3474-000CN LJ4
LJ4+ Top Cover Door
3B RB1-2323-000CN Hinge, Bracket
3C RB1-2324-000CN 2 ea. Hinge, Pin
3D RB1-2329-000CN RB1-3473-000CN LJ4
LJ4+ Hinge, Arm
3E RB1-2364-000CN Hinge, Bracket
3F RF5-0360-000CN RF5-0732-000CN LJ4
LJ4+ Cover, Upper
3G RB1-2314-000CN 2 ea. Stop, Hinge 4 RG5-0533-000CN C2001-69010
RG5-1077-000CN
C2037-69005
LJ4
Exchange LJ4+
ExchangeDisplay Ass’ y (English)
4A RB1-2359-000CN RB1-3476-000CN LJ4
LJ4+ Overlay (English)
Exchange Part Numbers Overlays
4A C2001-40001 C2001-40002
C2001-40003
C2001-40004
C2001-40005
C2001-40006
C2001-40007
C2001-40008
C2001-40009
C2001-40010
C2001-40011
C2001-40012
C2001-40013
C2037-40014 LJ4 English
French
German
Italian
Spanish
Norwegian
Swedish
Danish
Finnish
Dutch
Po l i s h
Tu r k i s h
Portugese
European English
Table 8-3aTop Cover Assembly
Parts and Diagrams  8-9 
						

							Ref Part # NotesDescription 
4A C2037-40001 C2037-40002
C2037-40003
C2037-40004
C2037-40005
C2037-40006
C2037-40007
C2037-40008
C2037-40009
C2037-40010
C2037-40011
C2037-40012
C2037-40013
C2037-40014 LJ4+ English
Fre n ch
German
Italian
Spanish
Norwegian
Swedish
Danish
Finnish
Dutch
Po l i s h
Tu r k i s h
Portugese
European English
5 RG5-0478-000CN RG5-1076-000CN LJ4
LJ4+ Display Ass’
y (W/O overlay)
6 RB1-2260-000CN Brush, cleaning
7 RG5-0519-000CN RG5-0982-000CN LJ4
LJ4+ Cable, Display Panel
8 XA9-0591-000CN Screw with Washer (M3 x 8)
8-10 Parts and Diagrams