Removing The Circuit Boards - Epson Stylus Pro 7400 Service Manual

EPSON Stylus Pro 7400/7800/9400/9800

4.2.4 Removing the Circuit Boards

4.2.4.1 BOARD ASSY., MAIN
Do not insert FFCs into the connectors at an angle. Doing so may
C A U T I O N
damage, short, or break the terminals in the connector resulting in
a breakdown of the elements on the board.
1. Remove the Rear Cover. See Section 4.2.3.6 on page 225.
2. Disconnect the following connectors and FFCs from the BOARD ASSY., MAIN.
Table 4-3. Connectors and FFCs Connected to the BOARD ASSY., MAIN
Number of
Connector No. Color
Pins
CN1 White 14
CN9 --- 20
CN10 --- 3
CN13 White 3
CN14 White 2
CN15 Black 4
CN16 White 4
CN17 --- 31
CN18 --- 31
CN20 --- 31
CN21 --- 26
CN23 --- 26
CN25 Black 3
CN26 Red 3
CN27 Yellow 3
CN31 White 3
Disassembly & Assembly
Destination
P/S BOARD ASSY. (CN001)
PANEL ASSY.
P Rear Sensor
Relay harness (CR MOTOR ASSY.)
Relay harness (PF MOTOR ASSY.)
Relay harness (Pressure Motor)
Relay harness (Pump Motor)
BOARD ASSY., SUB (CN1)
BOARD ASSY., SUB (CN2)
BOARD ASSY., SUB (CN4)
BOARD ASSY., SUB; B (CN1)
BOARD ASSY., SUB; C (CN1)
Relay harness (Right VACUUM FAN ASSY.)
Relay harness (Middle VACUUM FAN ASSY.)
Relay harness (Left VACUUM FAN ASSY.)
Regulator Solenoid (relay harness)
Connect the FFCs to their correct positions matching the numbers
written on the FFCs with those printed on the board as shown in
Figure
CN17, CN18, CN20, CN21, CN23
CN20 CN21
CN18
CN17 CN23 CN27
CN16
CN14
CN13
BOARD ASSY., MAIN
Disassembly Procedure
4-39.
Figure 4-38. Reconnecting FFCs
CN25 CN1
CN26
CN31
CN15
Figure 4-39. Connector Locations
Revision B
CN9 CN10
232