Samsung SF-4500 Service Manual page 25

4-6-3 Roll Pinch
1. Before you disassemble the roll pinch, you
should remove:
– OPE Unit (see page 4-9)
2. Remove the four screws securing the OPE unit.
3. Turn the upper scan frame of the OPE unit over.
4. Remove the three screws and take out the spring
pinch. Then take out the roll pinch.
Upper scan
frame
Samsung Electronics
4-6-4 OPE PBA
1. Before you disassemble the OPE PBA, you
should remove:
– OPE Unit (see page 4-9)
2. Remove the four screws securing the OPE unit.
3. Remove the nine screws and take out the PBA
and LCD.
Spring pinch
Roll pinch
Notes:
• Do not turn the OPE unit upside down after you
remove the screws securing the PBA. Keys and
rubber contacts may be separated and easily lost.
• When you reassemble the OPE unit, make sure
the keys are in correct position.
• When you reassemble the PBA, secure the screws
according in the order of the number printed on
the PBA.
• After reassembling, operate the machine to make
sure it works properly.
• After reassembling, make sure the LCD is not
blocked.
Disassembly
4-11