Service manual

EPSON Stylus COLOR 480 Revision B
Disassembly and Assembly Disassembly 76
4.2.4 Circuit board removal
1. Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2. Remove two screws (CB.S. 3x6, F/Zn) securing the Front Housing (Stacker guide) and
remove the Front Housing (Stacker Guide).
Figure 4-11. Removing the Front Housing (Stacker Guide)
3. Remove two screws (C.B.S. 3x6, F/Zn) securing the Circuit board unit at the front side
of the Printer mechanism.
Figure 4-12. Removing two screws at the printer front side
4. Remove four screws (C.B.S.3x6, F/Zn) securing the Circuit board unit at the back side
of the Printer mechanism and remove two screws (C.B.S. 3x6, F/Zn) securing the
Circuit board unit at the right side (viewed from back side).
Figure 4-13. Removing six screws at the printer back side & right side
5. Holding the Left housing lightly, pull down the Circuit board unit. Then disconnect the
following four cables from the corresponding connectors on the Main board.
n CR motor connector cable : CN2
n PF motor connector cable : CN3
n Printhead FFC : CN4
n HP/PE/IC sensor cable : CN1
6. Remove the following screws securing each circuit board to the Shield plate. Figure
Figure 4-14.
n C364 MAIN/B : Remove five screws.
C.B.S. 3x6, F/Zn (Red circled screws) : 3pcs (for Main board)
C.P. 3x6, F/Zn (Yellow circled screws) : 2pcs (for Parallel I/F) connector)
n C364PSB/E : Remove five screws.
C.B.S, 3x6, F/Zn (Yellow circled screws) : 3pcs (for PS board)
C.B.S-TITE R, 3x6, F/UC (Red circled screw) : 1pcs (for PS board)
C.B.(O),4x5, F/ZG for 120V (Green circled screw):1pcs (for Earth terminal)
Hexagon nut, Normal M4(Green circled) :1pcs (for Earth terminal)
(C.B.S Screw 3x6, F/Zn for 220V (Green circled screw): 1pcs (for Earth
terminal))
C.B.S 3x6 F/Zn
Front Housing
(Stacker Guide)
C.B.S. 3x6 F/Zn
C.B.S. 3X6 F/zn