HCD-EC599, MHC-EC599 - Sony Audio Service Manual (repair manual). Page 11

3.  Press three buttons of [u], [

-

] and [

?/1

] simultaneously.

4.  It enters the CD factory mode and the message “FACTORY” is 

displayed. When the [OPTIONS] button is pressed, the follow-
ing message (initial display) is displayed.

  – ON   

 

 

S character mode setting

 

 

Tracking servo setting

 

 RF gain setting

Key Operation:
[OPTIONS]:
 

The display changes in the following order when-
ever the button is pressed.

 

[DSGX]:
 

RF gain setting changes whenever the button is 
pressed.

 

“–”: No gain fi xation.

 

“AL”: Fix to the gain for AL disc.

 

“RW”: Fix to the gain for RW disc.

[FUNCTION]:
 

S character mode setting changes whenever the but-
ton is pressed.

 

“  ”: S character mode OFF.

 

“S”: S character mode ON.

5.  To release from this mode, Press three buttons of [u], [

-

]

and [

?/1

] simultaneously.

PROTECT KIND CHECK TEST MODE
This mode is used to check types of protect occurred during 
protector on.
Procedure:
During protection on, LCD will toggle between “PROTECT” 
message & type of protection mode.

PROTECT E01

Defect of AMP 
circuit

Defect of IC701, '+' 
and '-' speaker cord are 
shorted, fan is blocked 
from turning

PROTECT E02

Defect of power 
supply circuit 
to CD

Defect of optical unit, 
transformer or 9V 
Regulator supply

PROTECT E03

Defect of 
USB+5V power 
supply

Defect of IC400 and 
related circuitry

PROTECT E04

Defect of 9V 
power supply

Unusual heat up of 
IC702 (9V regulator) 
by improper assembly 
of heatsink, destruction 
of IC702 etc..

PROTECT E05

AC supply 
mismatch

Incorrect voltage 
selector setting

(Initial display)

FCSAG**(**: Focus AGC value)

TRKAG**(**: Track AGC value)

RF_AG**(**: RF AGC value)