Sony STR-DE375 Service Manual ▷ View online
5
STR-DE375
This section is extracted
from instruction manual.
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)
(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:
* 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.
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.
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.
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.
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.
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.
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.)
(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
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.
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:
* 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.
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.
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.
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.
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.
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:
* 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.
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 –
– MAIN BOARD –
SECONDARY board
PRIMARY board
(except E model)
(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:
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.
and tantalums.
• All resistors are in
Ω
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
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
• Abbreviation
CND : Canadian model
MY
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.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark
The components identified by
mark
!
or dotted line with mark
!
are critical for safety.
Replace only with part number
specified.
specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ne les remplacer que par une
pièce portant le numéro spécifié.
For printed wiring boards.
Note:
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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