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 75 (click to view)
PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don�t degrade the safety of the receiver through improper servicing.
BASIC CIRCUIT DIAGRAM
PT3-H AVC3-U Power
1
2
3
4
5
6
A
B
C
D
E
All DC voltage to be measured with a tester (100k /V). Voltage taken on a complex color bar signal including a standard color bar signal. Since this is a basic circuit diagram, the value of the parts is subject to be altered for improvement.