HP Laserjet 4 Manual
Have a look at the manual HP Laserjet 4 Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 1114 HP manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
![](/img/blank.gif)
Ref Part # Notes Description 1 RB1-2236-000CN Guide, Feeder 2 RB1-2253-000CN Roller, Guides (6) 3 XA9-0623-000CN Hex Head Screw 4 RG5-0468-000CN RG5-2192-000CNLJ4/4+ LJ5Transfer Block Ass’y 5 RB1-2251-000CN Block, Connecting 6 RG5-0521-000CN RG5-0979-000CNLJ4 LJ4+/5Cable, D.C. Controller /Interconnect PCA 7 RG5-0515-000CN Connector PCA Ass’y 8 RG5-0513-000CN RG5-0969-040CNLJ4 LJ4+/5High Voltage PCA 8 C2001-69009 C2037-69009LJ4 LJ4+/5High Voltage PCA (exchng) 9 RB1-2226-000CN Cover, High Voltage 10 RF5-0369-040CN Holder, Paper, Front 11 RB1-2259-040CN Holder, Paper, Rear 13 RF5-0349-000CN Roller, Transfer Table 8-4dInternal Components (Section 4) Parts and Diagrams 8-21
![](/img/blank.gif)
Figure 8-5 Main Switch Assembly 8-22 Parts and Diagrams
![](/img/blank.gif)
Ref Part # Notes Description 1 RB1-2118-000CN RB1-7906-000CNLJ4/4+ LJ5 SBase, Switch Mounting 2 RB1-2119-000CN RB1-7907-000CNLJ4/4+ LJ5 SSwitch 3 RB1-2345-000CN S Cover (LJ4/4+ only) 4 RG5-0524-000CN J201/ J601Cable, Paper Control PCA/ DC Controller 5 RG5-0530-000CN J603/ J135Cable, Lower Feed Assembly Table 8-5Main Switch Assembly Parts and Diagrams 8-23
![](/img/blank.gif)
Figure 8-6a Paper Feed Assembly (1 of 2) 8-24 Parts and Diagrams
![](/img/blank.gif)
Figure 8-6b Paper Feed Assembly (2 of 2) Parts and Diagrams 8-25
![](/img/blank.gif)
Ref Part # Notes Description RG5-0451-000CN RG5-0877-000CN RG5-2195-000CNLJ4 LJ4+ LJ5Paper Feed Assembly C2001-69005 C2037-69003 C3916-69005LJ4 LJ4+ LJ5Paper Feed Ass’y (exchng) 1 RB1-2126-000CN RB1-3477-000CN RB1-7911-000CNLJ4 LJ4+ LJ5Roller, Pickup, PC Tray Roller, Pickup, Tray 2 2 RB1-2127-000CN RB1-2205-000CNLJ4/4+ LJ5Roller, MP Tray Pickup Roller, Tray 1 Pickup 5 RB1-2138-000CN Lever, Switch 14 RG5-0529-000CN Cable, Env. Feeder 15G RF5-0343-000CN Pad, Separation 15K RG5-0514-000CN PCA, Sensor (PS4, PS5) 19 RB1-2181-000CN Holder, Guide Roller 20 RB1-2182-000CN Roller, Guide 21 RB1-2179-000CN Pin, Sensor Holder 22 RG5-0466-000CN Assembly, Sensor Holder 22A RB1-2133-000CN Paper Sensor Flag 22E WG8-0291-000CN Qty 2 Photo-Sensor (PS1, PS2) 23 RG5-0467-060CN Assembly, MP Tray (Tray 1) Base 25 RG5-0512-070CN Paper Control PCA 26 RH7-1136-000CN RH7-1197-000CNLJ4 LJ4+/5Motor, Paper Pickup 28 RH7-5070-000CN RH7-5071-000CNLJ4 LJ4+/5PC (Tray 2) Pickup Solenoid (SL1) 40 RH7-5074-000CN RH7-5075-000CNLJ4 LJ4+/5MP (Tray 1) Pickup Solenoid (SL2) 41 RB1-2139-030CN Paper Sensor Leaf Spring Table 8-6Paper Feed Assembly 8-26 Parts and Diagrams
![](/img/blank.gif)
Figure 8-7 MP Tray (Tray 1) Assembly Part # Notes Description RG5-0472-000CN RG5-0888-000CN RG5-2199-000CNLJ4 LJ4+ LJ5Multi-Purpose Tray Assembly Tr a y 1 A s s e m b l y Table 8-7MP Tray (Tray 1) Assembly Parts and Diagrams 8-27
![](/img/blank.gif)
Figure 8-8 Paper Output Assembly Ref Part # Notes Description RG5-0456-000CN RG5-0886-000CN RG5-2189-000CNLJ4 LJ4+ LJ5Paper Output Assembly 2 RB1-2299-030CN 4 ea. Rollers, Delivery 3 RB1-2302-000CN 4 ea. Spring, Roller 7 RF5-0425-040CN 4 ea. Holder, Roller 13 RS5-2185-000CN RS5-2267-000CNLJ4 LJ4+/5 4 ea.Spring, Compression 14 XF9-0410-000CN Belt, Timing 15 RF5-0438-000CN RF5-1077-030CNLJ4 LJ4+/5Roller, Lower Delivery 16 RF5-0534-000CN RF5-1076-020CNLJ4 LJ4+/5Roller, Upper Delivery 17 RF5-0532-000CN RF5-0647-000CNLJ4/4+ LJ5Upper Guide, Delivery Table 8-8Paper Output Assembly 8-28 Parts and Diagrams
![](/img/blank.gif)
Figure 8-9 Delivery Sensor Assembly Ref Part # Notes Description RG5-0475-060CN Assembly, Delivery Sensor 5 WG8-0291-000CN Photosensor, (PS3) 6 RG5-0522-000CN RG5-0980-000CNLJ4 LJ4+/5Cable, Delivery Sensor Table 8-9Delivery Sensor Assembly Parts and Diagrams 8-29
![](/img/blank.gif)
Figure 8-10 Fuser Assembly 8-30 Parts and Diagrams