STR-DA333ES, STR-DA555ES - Sony Audio Service Manual (repair manual). Page 9

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Digital voltmeter

Adjust the respective adjustment elements so that the voltage (absolute value) across the corresponding
testpoints satisfies the specification.

Specification

6mV

Channel

FRONT L
FRONT R

CENTER

REAR L
REAR R

Test point

TP501
TP551
TP601
TP701
TP751

Adjustment element

RV501
RV551
RV601
RV701
RV751

TP501

RV501

RV601

RV551

RV751

RV701

TP601

TP551

TP751

TP701

* All fluorescent segments are tested.  When this test is activated,

all segments turn on at the same time, then each segment turns on
one after another.

Procedure:
While depressing the  FUNCTION MODE  button and the  SOUND
FIELD MODE  button simultaneously, press the  

1/u  button to

turn on the main power. All segments turn on at the same time, then
each segment turns on one after another.

When the  CURSOR MODE  button,  

B  ,  V  ,  v  , or  b  is pressed,

the indication advances in the following order: All segments on,
Bridge 1, Bridge 2, All segments off.

* All preset contents are reset to the default setting.

Procedure:
While depressing the  FUNCTION MODE  button and the  SOUND
FIELD GENRE  button simultaneously, press the  

1/u  button to

turn on the main power.  The message FACTORY SET appears and
the present contents are reset to the default values.

* All preset contents are cleared when this mode is activated.  Use

this mode before returning the product to clients upon completion
of repair.

Procedure:
While depressing the  SOUND FIELD GENRE  button and the
SOUND FIELD ON/OFF  buttons simultaneously, press the  

1/u

button to turn on the main power. The message “ALL CLEAR!”
appears and the preset data is cleared.

* The preset sound field is cleared when this mode is activated.

Use this mode before returning the product to clients upon comple-
tion of repair.

Procedure:
While depressing the  SOUND FIELD ON/OFF  button, press the
1/u  button to turn on the main power.  The message “SURR
CLEAR!” appears and initialization is performed.

Procedure:
While depressing the  FUNCTION MODE  button and the EQUAL-
IZER  buttons simultaneously, press the  

1/u  button to turn on the

main power. The message “DSP NO ERROR” or “DSP ERROR”.
When “DSP NO ERROR” is displayed, a 1 kHz signal is output to
all channels.
When the  

B  ,  V  ,  v  , or  b  button is pressed while “DSP NO

ERROR” is displayed, the message “DSP TEST MODE” appears.
In this mode, the input signal that is selected by the  FUNCTION
knob is distributed to each speaker.

Speaker

Signal

CENTER

L

REAR L

L

REAR R

R

FRONT L

L

FRONT R

R

* Some DTS sounds will be distorted even when the volume is low-

ered. In this case, set the attenuator to ON according to the fol-
lowing procedure and reduce the overall level of the sound.

Procedure:
While pressing the  

B  button and  b  button simultaneously, press

the  

1/u  button to turn ON the power. The message “ATTENU-

ATE OFF” or “ATTENUATE ON” message appears.

All segments on

Bridge 1

Bridge 2

All segments off