DOWNLOAD Sony STR-DE375 Service Manual ↓ Size: 8.45 MB | Pages: 31 in PDF or view online for FREE

Model
STR-DE375
Pages
31
Size
8.45 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-de375.pdf
Date

Sony STR-DE375 Service Manual ▷ View online

5
STR-DE375
This section is extracted
from instruction manual.
qs
qa
3 4 5 6 7
9
q;
1
2
8
1
ANTENNA (AM/FM)
2
DVD/MULTI CH
3
CD
4
MD/TAPE
5
TV/SAT
6
VIDEO
7
SUB WOOFER
8
SPEAKERS SURROUND
9
SPEAKERS CENTER
q;
SPEAKERS FRONT
qa
VOLTAGE SELECTOR
(except Singapore, Malaysia and
Canada models)
qs
AC power cord
Rear Panel
6
STR-DE375
SECTION 2
TEST MODE
FACTORY SET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the  VIDEO  and the  CD  buttons simultaneously,
press the power  ?/1   button to turn on the main power.  The
message “FACTORY” 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  TUNER  and the  MD/TAPE  buttons
simultaneously, press the power  ?/1  button to turn on the main
power.  The message “INITIAL” appears and initialization is
performed.
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  TV/SAT  and the  CD  buttons simultaneously,
press the power  ?/1  button to turn on the main power.
1. All segments turn on.
SET UP, SOUND FIELD LED turn on.
2. Press the  VIDEO  button, confirm display
SET UP, NAME LED turn on.
3. Press the  VIDEO  button, confirm display
SOUND CONTROL LEVEL, SOUND CONTROL SUR and
SOUND FIELD LED turn on.
4. Press the  VIDEO  button, All segments turn off.
5. Every pressing of the  VIDEO  button turns on each segment
one after another in the following order.
(Not only the  VIDEO  button, but also the other buttons such as
 TV/SAT ,  MD/TAPE ,  CD ,  TUNER  can be used.)
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+  button,
press the power  ?/1  button to turn on the main power.  Either
the message “AM 9 k STEP” or “AM 10 k STEP” appears.  Select
the desired step.
* For Canadian/E model only
SOFTWARE VERSION DISPLAY MODE
* The software version is displayed.
* Procedure:
While depressing the  TUNER  and the  VIDEO  buttons
simultaneously, press the power  ?/1  button to turn on the main
power.  The model name, destination and the software version are
displayed.
AUTOBETICAL MODE (AEP Model only)
* This mode is installed in the Europe models only. When this mode
is used, the receiver scans the broadcasts that can be received by
tuner, and sets up the broadcasts. Be sure to start scanning after
connecting the antenna.
* Procedure:
Check that the antenna is connected. Press the power  ?/1  button
while pressing the  MEMORY  button to turn on the power. The
message “Autobetical select” appears and scanning starts by tuner.
SURROUND 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  button to turn on the main power.  The message
“SURR CLR” appears and initialization is performed.
KEY CHECK MODE
* Button check
* Procedure:
While depressing the  MD/TAPE  and the  CD  buttons
simultaneously, press the power  ?/1  button to turn on the main
power.
“RES 36 KEY” appears.
Every pressing of any button other than  ?/1  counts down the
buttons.  The buttons which are already counted once are not
counted again.  When all buttons are pressed “RES 00 KEY”
appears.
When  MASTER VOLUME  is rotated in clockwise direction,
“VOL MIN”, “VOL 1” to “VOL 30”, “VOL MAX” appear.
7
STR-DE375
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
• WAVEFORMS
– MAIN BOARD –
SECONDARY board
PRIMARY board
(except E model)
VOL-SEL board (E model)
MAIN board
DISPLAY board
HEADPHONE board
POWER SWITCH board
STANDBY board
1
 IC1 
qf
 
2.2Vp-p
230ns
2
 IC103 
qa
 
5.0Vp-p
200ns
– DISPLAY BOARD –
8
STR-DE375
For schematic diagrams.
Note:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
%
: indicates tolerance.
f
: internal component.
2
: nonflammable resistor.
1
: fusible resistor.
C
: panel designation.
A
: B+ Line.
B
: B– Line.
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
• Abbreviation
CND : Canadian model
MY
: Malaysia model
SP
: Singapore model
AR
: Argentina model
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark 
!
 or dotted line with mark
!
 are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 
!
 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
: Pattern from the side which enables seeing.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
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