EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Disassembly & Assembly Disassembly Procedures 233
4.2.4.2 Power Supply Board / Power Supply Cooling Fan
1. Remove the "PCB Unit".(Refer to "4.2.4.1 C593 MAIN Board" (p226).)
2. Disconnect the following connectors/harnesses from the "Power Supply
Board".
3. Disconnect the connectors of the “Power Supply Cooling Fan” from the
“C593 MAIN Board”. (Refer to "4.2.4.1 C593 MAIN Board" (p226).)
4. Remove the two screws that secure the "Power Supply Cooling Fan", and
remove the "Power Supply Cooling Fan".
C.B.S. 3x18: 2 pcs.
5. Remove the five screws securing the "Power Supply Board" and remove
the "Power Supply Board".
C.B.S. 3x8: 5 pcs.
Figure 4-39. Power Supply Cooling Fan Removal
Figure 4-40. Power Supply Board Removal
W A R N I N G
When removing the "Power Supply Board", wait 5 minutes
after unplugging the AC power cord before starting work to
allow discharge of residual charge in the electrolytic
capacitors.
For your safety, never touch the primary smoothing
capacitor (C6). Do not place the "Power Supply Board"
(solder side) directly on a conductive surface.
Table 4-5. Connectors Connected to Power Supply Board
Connector
No.
Color
Number
of Pins
Connection Socket
CN1 White 2 AC Inlet
CN2 White 14 C593 MAIN Board (CN1)
C.B.S. 3x18
C.B.S. 3x8
C.B.S. 3x8
Connectors
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