5 Replacement
76
S84-ex/S86-ex Service Manual
5.7
Replacing the Power Supply Unit
Required tool:
• Phillips screwdriver
1 Make sure that the printer is in power off
mode, then disconnect the power cord
from the AC outlet.
2 Open the rear housing covers from the printer.
Refer to Section 5.1.1 Opening the Rear Housing Cover for details.
3 Disconnect all the cables from the
connectors (as listed below) on the
power supply unit .
A: S-cont DC power 24 V, connects to the
POW24V connector on the main (CONT)
PCB.
B: No connection.
C: Head power, connects to the print head
assembly.
D: S-cont DC power, connects to the POW
connector on the main (CONT) PCB.
E: No connection.
F: AC line, connects to the power switch.
4 Remove four screws attaching the
power supply unit to the rear
housing cover.
5 Replace the defective power supply
unit
with a new power supply unit.
6 Perform the assembly with the reverse
procedure.
After replacement
• Power on the printer, check that the printer operates correctly.