Epson SQ-B50/2550 Technical Manual page 175

REV.-A
4.2.2. Case Removal
This section describes the upper case removal and the control unit panel (SEIPNL) and cover open sensor
removal.
4.2.2.1 Upper Case Removal
Step 1 Remove the sheet guide, printer cover, paper feed knob, options (tractor unit, paper guide, and
CSF).
Step 2 Remove the CBB screw (M4 X 25) in the groove at the front side of the upper case. (136-column
model: two, aO-column model: one)
Step 3 Unlock the two hooks at the front by inserting a hand from the rear side of the upper case,
then lift the upper case a little bit. Insert your hand through the space at the right side, and
disconnect the control panel cable from connector CN6 on the SEIMA board.
Step 4 Lift the front of the upper case by using the back of the case as a fulcrum.
CBB (M4
x
25)
Figure
4-8.
Upper Case Removal
Sheet Guide
CN6: SEIMA
ASSEMBLY POINT:
• When reattaching the upper case, check that the control panel cable is fixed by the bent tabs on
the inside (right side) of the upper case. (See Figure 4-9)
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