STR-DA6400ES - Sony Audio Service Manual (repair manual). Page 26

FL display test

ALL ON

Each time [DISPLAY] button to change as follows all on t 

test pattern 1 t test pattern 2 t all off t all on

Super reset

SUPER RESET [XXX]

Not used for the servicing 
If super reset is performed, “up convert signal level adjustment” 
will also be initialized 
When EEPROM initialization is required, perform the “memory 
clearing mode”

RAM watch menu

XXX

Not used for the servicing

EERROM debug

EEPROM [

∗∗∗∗] [XX]

Not used for the servicing

Protector on/off

PROTECTOR ON/OFF [XXX]

Not used for the servicing

Audio swap

SWAP [XXXXXXXXXXX]

Not used for the servicing

Volume value display (FL/FR)

FL

∗∗∗∗ FR XXXX

Not used for the servicing

Volume value display (SL/SR)

SL

∗∗∗∗ SR XXXX

Not used for the servicing

Volume value display (CT/SW)

CT

∗∗∗∗ SW XXXX

Not used for the servicing

Volume value display (SBL/SBR)

SBL

∗∗∗∗ SBR XXXX

Not used for the servicing

DAC mute fl ag upper

DAC MUTE U XXXXXXXX

Not used for the servicing

DAC mute fl ag lower

DAC MUTE L XXXXXXXX

Not used for the servicing

2nd volume value display

2nd VOLUME XXX

Not used for the servicing

FL display duty change

DARK OUT DUTY [XXX%]

Not used for the servicing

CORTEZ debug read

CORTEZ READ [XXX]

Not used for the servicing

Check H.A.T.S. playback 
component

CHK HATS COMP [XXX]

Not used for the servicing

H.A.T.S. mode fi x

HATS FIX [XXXXXXX]

Not used for the servicing

H.A.T.S. rate control

HATS RATE [XXXXXX]

Not used for the servicing

H.A.T.S. error process

HATS ERR PROC [XXX]

Not used for the servicing

H.A.T.S. error trig

HATS ERR TRIG

Not used for the servicing