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231
Preventive and Corrective Maintenance
Gears and Pulley
10/27/05 S4M Maintenance Manual 13291L-001 Rev. A
Remove the Main Logic Board
1.
Connect yourself to an antistatic device.
2. See RRP No. 1 on page 122 and remove the electronics cover.
3. See Figure 115. Remove all cables from the main logic board (MLB).
Figure 115 • Remove the Main Logic Board Cables
4. See Figure 116. Remove the six screws and one nut securing the main logic board to the
frame of the printer.
5. Remove the two studs and washers securing the serial port connector to the back of the
printer.
Caution • Observe proper electrostatic safety precautions when handling
static-sensitive components such as circuit boards and printheads.
Note • Take note of the location of all cables on the main logic board.
1Printhead data (J3) 7Transmissive sensor (P9)
2Power-in (J8) 8Reflective sensor (P7)
3Front panel (J2) 9Take-label sensor (J19)
4Stepper motor (J9) 10 Communication expansion
Port (J17)
5Booster board (J7) 11 USB port (J14)
6Ribbon Sensor/Head Open
(P4)
12 Serial port (J10)
F6
L
F
1A
1
2
3
4
5
6
7
8
10
11
12
9
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