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 5 (click to view)
1. POWER SUPPLY DURING REPAIRS
In this unit, about 5 seconds after power is supplied (4.2V) to the battery terminal using a regulated power supply, the power is shut off so that the unit cannot operate. This following three methods are available to prevent this. Take note of which to use during repairs.
Decrease the voltage to 3Vdc.
Connect the servicing remote commander RM-95 (J-6082-053-B), and set the remote commander switch to the âADJâ side.