Laser/Scanning Assembly; Fiber Optic Cable; Laser/Scanning Assembly - HP LaserJet II Serie Manual De Instrucciones

HP 33440/HP 33449 COMBINED SERVICE MANUAL
LASER/SCANNING ASSEMBLY
The Laser/Scanning Assembly (Figure 6-22) is etiemely fragile and should be handled carefully.
Be particularly careful when handing the Fiber Optic Cable.
1. Remove the Main Body Covers. (Only the top cover panel of the Main Body Covers needs to be
removed on the ~ 33449).
2. Remove the screw (1) on the Fiber Optic Cable connection cover, open the cover, and remove
the cable. (Be sure to observe the routing of this wble for exact replacement.)
3. Disconnect cables J401 and J451 on the Laser/Scanning PCA and Laser Driver PCA.
4. Remove the screws (4) that secure the Laser/Scanning Assembly to the printer.
5. Carefully lift the assembly off the frame.
Caution
Some printers have meti shims (plates) located under one or both ends Oefi or
right) of the laser unit. These shims must not be removed or altered or the printer
may require factory retignment. (See Figure 8-12, Item 41, for shim location.)
FIBER OPTIC CABLE
To replace the Fiber Optic Cable, it must be disconnected from both the Laser/Scanning Assembly
and the DC Controller PCA.
1. Remove the Main Body Covers. (Only the top cover panel of the Main Body Covers needs to be
removed on the HP 33449).
2. To disconnect the Fiber Optic Cable from the Laser/Scanning Assembly, remove screw (1)
securing the small door (see Figure 6-22), open the door, and slip the cable out of the retainer,
3. To remove it from the DC Controller PCA, remove the Bottom Cover (see Section 6-5) and
disconnect the cable.
To prevent damage when reinstiling the cable, be sure it is routed properly with no sharp bends.
Figure 6-22. Laser/Scanning Assembly
6-27