This manual is very useful because it presents the technical specifications of the cd player, including the manufacturer of the reader, this helps if you need to replace it. It also displays the settings and layout of the circuit.
Manual was a good representation of service infomation for the EWV404. It worked well for my repair.
Text excerpt from page 37 (click to view)
2-10. Replacement of Circuit Board
2-10-7. Replacement of MB-573 Board
1. Peform the procedures 1 to 3 in Section 2-7-1 to remove the board rail. 2. Remove the DC/DC converter and AC/DC converter referring to Sections 2-8 and 2-9. 3. Remove the SDI-10 board referring to Section 2-10-5. 4. Remove the three screws and spacer to remove the DAD-19 board.
5. Disconnect the connectors and flexible card wires as shown below. n Refer to Section 2-6 before disconnecting or connecting the flexible card wire.
A side
CN1 CN2 CN3 CN4 CN5
CN27
CN28
DAD-19
CN15 CN16
B2.6 x 4
CN13 CN12
CN11
B side
CN26 CN30 CN29 CN23 CN20 CN19 CN24 CN9 CN25 CN6 CN10 CN8 CN31 CN7
Flexible card wires
Spacer B2.6 x 4
CN21 CN22 CN14
6. Remove the three columns and screw to remove the MB-573 board.
B2.6 x 5 MB-573
Columns
7. Install a new board in the reverse order of removal.
