DOWNLOAD Sony STR-DA30ES / STR-DA50ES / STR-V55ES Service Manual ↓ Size: 10.36 MB | Pages: 67 in PDF or view online for FREE

Model
STR-DA30ES STR-DA50ES STR-V55ES
Pages
67
Size
10.36 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-da30es-str-da50es-str-v55es.pdf
Date
PREV: Sony SS-XB33T Service Manual

Sony STR-DA30ES / STR-DA50ES / STR-V55ES Service Manual ▷ View online

— 5 —
SECTION 1
GENERAL
This section is e
xtracted
from STR-D
A50ES
instr
uction man
ual.
— 6 —
— 7 —
SECTION 2
TEST MODE
FLUORESCENT INDICATOR TUBE TEST MODE
* 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 and the SOUND
FIELD MODE buttons simultaneously, press the power [
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.
FACTORY SET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the FUNCTION MODE and the SOUND FIELD
GENRE buttons simultaneously, press the power [
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 CLEAR MODE
* 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 and the SOUND
FIELD ON/OFF buttons simultaneously, press the power [
1/u]
button to turn on the main power. The message ALL
CLEAR!appears and the preset data is cleared.
SOUND FIELD CLEAR MODE
* The preset sound field is 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 ON/OFF button, press the
power [
1/u] button to turn on the main power.  The message SURR
CLEAR! appears and initialization is performed.
AM CHANNEL STEP 9 kHz/10 kHz
SELECTION MODE
* Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
* Procedure:
Set the FUNCTION to AM.  Turn off the main power.
While depressing the TUNING+ button or the PRESET TUNING
+ button, press the power [
1/u] button to turn on the main power.
Either the message AM 9kHz STEP or AM 10kHz STEP appears.
Select the desired step.
DSP TEST MODE
* Procedure:
While depressing the FUNCTION MODE and the EQUALIZER
buttons simultaneously, press the power [
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
key is distributed to each speaker.
DTS MODE
* Procedure:
While depressing the 
B and b buttons simultaneously, press the
power [
1/u] button to turn on the main power. The message
ATTENUATE OFF or ATTENUATE ON.
Speaker CENTER REAR  L REAR  R FRONT  L FRONT  R
Signal
L
L
R
L
R
All segments on
Bridge 1
Bridge 2
All segments off
— 8 —
SECTION 3
ELECTRICAL ADJUSTMENT
IDLING CURRENT ADJUSTMENT
[Measuring Instrument]
Digital voltmeter
[Adjustment Method]
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
S. AMP BOARD
MAIN BOARD
[Location of Adjustment Elements]
Page of 67
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