5–50
Replacement Procedures
PCBA, Power Supply (Figure 5–22 )
WARNING
To prevent injury from electric shock, wait at least one minute after
shutting off power before removing the power supply PCBA. Do not
touch components or flex the board during removal/installation. Handle
the board by the ejections levers and the sides. Wear a properly
grounded static wrist strap when handling the power supply PCBA.
Removal
1.
Prepare the printer for maintenance (page 5–3).
2.
Open the printer cover.
3.
Remove the paper guide assembly (page 5–42).
4.
Disconnect the mechanism driver power supply cable (1) from
connector J102 (2).
5.
Lift the ejection levers (3).
6.
Grasp the power supply PCBA (4) by the ejection levers and pull it up
about four inches.
7.
Disconnect the circuit breaker cable (5) from connector J1 (6).
8.
Remove the power supply PCBA (4) from the card cage (7).
Installation
1.
Connect the circuit breaker cable (5) to connector J1 (6).
2.
Slide the power supply PCBA (4) into the card cage (7), engaging the
card edge connector at the bottom of the card cage.
3.
Lower the ejection levers (3) to the closed position.
4.
Connect the mechanism driver power supply cable (1) to connector J102
(2). (Make sure to orient it properly to J102.)
5.
Push the power supply PCBA (4) down into the edge connector.
6.
Install the paper guide assembly (page 5–42).
7.
Return the printer to normal operation (page 5–86).
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: ......