5–46
Replacement Procedures
PCBA, Common Controller (Figure 5–20 )
CAUTION
To prevent electrostatic damage to electronic components, wear a
properly grounded static wrist strap when handling PCBAs.
Removal
1.
Make a configuration printout. (Refer to Appendix A.)
2.
Prepare the printer for maintenance (page 5–3).
3.
Open the printer cover.
4.
Remove the paper guide assembly (page 5–42).
5.
Open the connector latches and disconnect the multi I/O ribbon cable
(1) from connector J1 (2).
6.
Open the connector latches and disconnect the CCB/Mech. Driver cable
connector (3) from connector J2 (4).
7.
Open the connector latches and disconnect the control panel ribbon
cable (5) from connector J3 (6).
8.
Lift the ejection levers (7).
9.
Grasp the common controller PCBA (8) by the ejection levers and pull
it up and out of the card cage (9).
10. Remove the DPU PROMs, font PROMs, RTPU and PFC PROMs (page
5–58), and host terminating resistors (page 5–62).
Installation
1.
Install the DPU PROMs, font PROMs, RTPU and PFC PROM (page
5–58), and host terminating resistors (page 5–62) onto the replacement
PCBA.
2.
Slide the common controller PCBA (8) down into the card cage (9).
Engage the card edge connectors in the connector at the bottom of the
card cage (9).
3.
Lower the ejection levers (7) to the closed position.
4.
Push the common controller PCBA (8) down into the edge connector.
5.
Connect the control panel ribbon cable (5) to connector J3 (6) and close
the latches.
6.
Connect the CCB/Mech. Driver cable connector (3) to connector J2 (4)
and close the latches.
7.
Connect the multi I/O ribbon cable (1) to connector J1 (2) and close the
latches.
8.
Install the paper guide assembly (page 5–42).
9.
Adjust the hammer phasing (page 4–6).
Summary of Contents for P4280
Page 1: ...P4280 Line Matrix Printer Maintenance Manual R ...
Page 2: ......
Page 3: ...P4280 Line Matrix Printer Maintenance Manual R P N 155064 001 Rev B ...
Page 236: ...A 22 Configuring the Printer ...
Page 246: ...C 2 Torque Table ...
Page 263: ...D 17 Wire Data Cable No Part No Description W7 150649 001 Cable Assembly AC Ground PIN 1 ...
Page 296: ...8 Index Notes ...
Page 297: ......