Sony STRDE-375 Service manual

STR-DE375
Amplifier section
Rated Power Output at Stereo
Mode
Reference Power Output
Frequency response
Inputs
Tuning range
Antenna terminals
Intermediate frequency
Sensitivity
Usable sensitivity
S/N
Harmonic distortion at 1 kHz
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
87.5 - 108.0 MHz
75 ohms, unbalanced
10.7 MHz
Mono: 18.3 dBf, 4.5 µV Stereo: 38.3 dBf, 45 µV
11.2 dBf, 1 µV (IHF)
Mono: 76 dB Stereo: 70 dB
Mono: 0.3 % Stereo: 0.5 %
Outputs
Muting
TONE
MD/TAPE OUT:
Voltage: 150 mV, Impedance: 10 kilohms
VIDEO AUDIO OUT:
Voltage: 150 mV, Impedance: 10 kilohms
SUB WOOFER:
Voltage: 2 V Impedance: 1 kilohms
PHONES: Accepts low
and high impedance headphones
Full mute
±6 dB at 100 Hz and
10 kHz
CD, DVD/ MULTI CH, MD/TAPE, TV/SAT, VIDEO
Sensitivity
150 mV
Impedance
50
kilohms
S/N
85 dB
+0.5 –2
Canadian model: (8 ohms 40 Hz - 20 kHz,
less than 0.09% total harmonic distortion) 80 W + 80 W
Malaysia, Singapore model (8 ohms at 1 kHz, THD
0.7%) 80 W + 80 W
Other countries: (8 ohms at 1 kHz, THD
0.7%) 50 W + 50 W
Canadian model: (8 ohms at 1 kHz, THD
0.7%)
Front:
80 W/ch
Center:
80 W
Surround:
80 W/ch
Malaysia, Singapore
model (8 ohm at 1 kHz, THD 10%) Front: 90 W/ch Center: 90 W Surround: 80 W/ch Other countries: (8 ohms at 1 kHz, THD
10%)
Front:
50 W/ch
Center:
50 W
Surround:
50 W/ch
TV/SAT, CD, MD/TAPE,
VIDEO, DVD/MULTI CH: 10 Hz - 50 kHz
dB
SERVICE MANUAL
Ver 1.0 2001. 04
Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol ; “AC-3” and “Pro Logic” are trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
Canadian Model
AEP Model
UK Model
E Model
9-873-861-11
2001D1600-1 © 2001.4
Sony Corporation
FM STEREO FM-AM RECEIVER
— Continued on next page —
STR-DE375
Separation
Frequency response
Selectivity
AM tuner section
Tuning range
Antenna
Intermediate frequency
Usable sensitivity
S/N
Harmonic distortion
Selectivity
45 dB at 1 kHz
30 Hz - 15 kHz dB
60 dB at 400 kHz
Malaysia, Singapore model 531 - 1602 kHz (9 kHz
step)
Canadian model: 530 - 1710 kHz (10 kHz
step)*
531 - 1710 kHz (9 kHz
step)*
Other countries models: 530 - 1610 kHz (10 kHz
step)*
531 - 1602 kHz (9 kHz
step)*
Loop antenna
450 kHz
50 dB/m (at 999 kHz)
54 dB (at 50 mV/m)
0.5 % (50 mV/m, 400 Hz)
At 9 kHz: 35 dB At 10 kHz: 40 dB
+0.5 –2
* You can change the AM tuning interval
between 9 kHz and 10 kHz. Turn off the receiver and press ?/1 (power) for more than 4 seconds until INITIAL appears.
1) After tuning in any AM station, turn off the receiver.
2) Hold down PRESET TUNING + button and press the ?/1 (power) button. 9k STEP appears.
To change to 10k Step, repeat step 1 and 2 until 10k STEP appears. Note that all preset stations, index names and sound field are cleared after you make the procedure above.
General
System
Power requirements
Tuner section: PLL
quartz-locked digital synthesizer system
Preamplifier section:
Low-noise NF type equalizer
Power amplifier section:
Pure-complementary SEPP
Canadian model:
120 V AC, 60 Hz
Malaysia, Singapore model
220-230 V AC, 50/60 Hz
Other countries:
120/220/240 V AC, 50/60 Hz
Power consumption
Dimensions
Mass (Approx.)
Supplied accessories
Canadian model:
240 VA
Standby mode: 0.5 W
Malaysia, Singapore model
175 W
Standby mode: 0.5 W
Other countries:
160 W
Standby mode: 0.5 W
430 x 145 x 298 mm
Malaysia, Singapore model
5.5 kg
Canadian and other
countries: 6 kg (13 lb 4 oz)
FM wire antenna (1)
AM loop antenna (1)
Remote commander
(remote) (1)
Size AA (R6) batteries (2)
The specification measured is under
230 AC 50 Hz condition (Malaysia, Singapore model)
Design and specifications are subject to change without notice.
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
MODEL PARTS No.
AEP model 4-232-119-0s UK model 4-232-119-1s Malaysia,Singapore model 4-232-119-3s E model 4-232-119-4s Canadian model 4-232-119-5s Argentina model 4-232-119-7s
2
STR-DE375
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for A C leakage. Check leakage as described below.
LEAKAGE
The A C leakag e from any exposed metal part to earth g round and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT -540A. F ollow the manufactur ers’ instructions to use these instruments.
2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated A C voltmeter . The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd ar e examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A)

TABLE OF CONTENTS

1. GENERAL ··········································································4
2. TEST MODE ······································································ 6
3. DIAGRAMS
3-1. Circuit Boards Location ····················································· 7 3-2. Block Diagram ··································································· 9 3-3. Printed Wiring Board Main Section ······························· 10 3-4. Schematic Diagram Main Section (1/3) ·························11 3-5. Schematic Diagram Main Section (2/3) ·························12 3-6. Schematic Diagram Main Section (3/3) ·························13 3-7. Printed Wiring Board Panel Section ······························· 14 3-8. Schematic Diagram Panel Section ································ 15 3-9. Printed Wiring Board Power Section ····························· 16 3-10. Schematic Diagram Power Section ······························· 17 3-11. IC Block Diagrams ··························································· 18 3-12. IC Pin Function Description············································· 18
4. EXPLODED VIEWS
4-1. Front Panel Section ·························································· 20 4-2. Chassis Section································································· 21
5. ELECTRICAL PARTS LIST ······································· 22
To Exposed Metal
Parts on Set
AC
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Earth Ground
Voltmeter (0.75 V)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
3
STR-DE375
Front Panel
SECTION 1
GENERAL
q;7 86 9
1
2 3
4
1 ?/1(POWER) button 2 DISPLAY button 3 DIMMER button 4 PHONES jack 5 PRESET/PTY SELECT + , – buttons
TUNING + , – buttons MEMORY button SHIFT button PTY button FM MODE button FM/AM button
5qsqa qfqd
6 SET UP button and indicator 7 NAME button and indicator 8 LEVEL button and indicator 9 SUR button and indicator q; VIDEO button
TV/SAT button DVD/MULTI CH button MD/TAPE button CD button TUNER button
qg qh qj
qa MENU < , > buttons qs MENU + , – buttons qd ENTER button qf SOUND FIELD ON/OFF
(and indicator), MODE + , – buttons
qg TREBLE + , – buttons
BASS + , – buttons
qh MUTING button qj MASTER VOLUME control
4
Rear Panel
STR-DE375
This section is extracted from instruction manual.
1 ANTENNA (AM/FM) 2 DVD/MULTI CH 3 CD 4 MD/TAPE 5 TV/SAT
2
1
3
9 q;
456 7
6 VIDEO 7 SUB WOOFER 8 SPEAKERS SURROUND 9 SPEAKERS CENTER q; SPEAKERS FRONT
8
qa
qs
qa VOLTAGE SELECTOR
(except Singapore, Malaysia and Canada models)
qs AC power cord
5
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 b uttons 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 po wer ?/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.
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 po wer ?/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.
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, b ut also the other buttons such as TV/SAT , MD/TAPE , CD , TUNER can be used.)
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 po wer. 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 po wer ?/1 b utton 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.
6
3-1. CIRCUIT BOARDS LOCATION
d
STR-DE375
SECTION 3
DIAGRAMS
PRIMARY board (except E model)
POWER SWITCH board
HEADPHONE board
SECONDARY board
DISPLAY board
VOL-SEL board (E model)
STANDBY board
MAIN boar
• WAVEFORMS – MAIN BOARD –
1
IC1 qf
230ns
DISPLAY BOARD –
2
IC103 qa
200ns
2.2Vp-p
5.0Vp-p
7
STR-DE375
B
These are omitted.
CE
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.)
For schematic diagrams. Note:
All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics and tantalums.
All resistors are in Ω and 1/
specified.
% : indicates tolerance.
f : internal component.
2 : nonflammable resistor.
1 : fusible resistor.
C : panel designation.
Note:
The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
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
W or less unless otherwise
4
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
Q
B
E
These are omitted.
8
3-2. BLOCK DIAGRAM
STR-DE375
DVD/
MULTI CH
CD IN
MD/TAPE OUT
MD/TAPE IN
VIDEO/AUDIO OUT
VIDEO/AUDIO IN
SUB
WOOFER
FRONT
SURROUND
CENTER
J401,402
J501
• RCH is omitted due to same as LCH.
• Signal Path
: FM
: CD
POWER AMP
+B
3
5
6
R-CH
R-CH
R-CH
D802
D820-823
D910-913
RELAY DRIVE
Q901
TM602
L
R
TM601
SR
SL
C
J403
F1
F2
POWER AMP
IC701
+V OUT1
2
DATA CLOCK S CE
S CE
AUDIO SELECT
IC201
66
L CH OUT
IN F2
71
IN A2
61
REC OUT 2A
70
IN B2
61
REC OUT 2B
63
IN G2
27
SW CH N IN
60
SEL OUT2
59
D OUT2
C CH OUT
58
T IN2
44
SL CH N IN
45
SL CH D IN
38
C CH N IN
39
C CH D IN
SW CH OUT
32
DATA
31
CLOCK
33
LATCH
ENCODER50ENCODER49SYS POWER
3 1
ENCODER
RV201
MASTER VOLUME
49
43SL CH OUT
37
28
56
S200
?/1
SYSTEM
POWER
59
FUNC MUTE
MUTE Q361
MUTE Q362
MUTE Q363
MUTE Q364
6
NF1
IN1
5
-V OUT1
3
+V OUT2
12
8
9NF2
IN2
-V OUT1
11
POWER AMP
IC501
+V OUT
6
1
IN-
IN+
2
5-V OUT
47
54
53
H/P RY
PROTECT
FRONT RY
DIG1-10 S1-S15
90 80 78 75
100 9133 30
F1 F2
FLUORESCENT
INDICATOR TUBE
FL201
TUNER UNIT
FM
AM
L OUT
FM
R OUT
AM DET OUT
DATA OUT
S DATA
S CLK
SLAT
SIGNAL
STEREO
TUNED
T MUTE
R-CH
PLL DATA
SIGNAL
STEREO
AUTO STOP
T MUTE
SIGNAL
STEREO
23
28
SIGNAL
STEREO IN
X1
12 11
X201
5.00MHz
S DATA
S CLK
S CE
T MUTE
AUTO STOP
21
22
AUTO STOP
PLL DATA
24
T MUTE
X2
AEP,UK MODELS
S CLK
S DATA
19
18
S DATA
PLL DATA
RDS
IC1
4
14
13
X1
4.33MHz
S CE
20
S CE
S CLK
SYSTEM CONTROL
IC103
63
2
16
38
LEVEL LED
SETUP LED
NAME LED
66
65
64
LED DRIVE
Q210-213,215
D210-213,D215
DATA CLK
15
17
RDS DATA
RDS CLK IN
SURR LED
S FIELD LED
68
S CE
DOLBY
SURROUND PROCESSOR
IC202
61
RT IN
34
FC R IN
32
FC SR IN
62
FC C IN
52
DATA
53
CLK
51
ENABLE
16L OUT
18SR OUT
10C OUT
S CE
DATA
CLOCK
8
9
7
S CLK
S DATA
A/D1 A/D4
FUNCTION
KEY
S202-229,231-236
LIMITER
Q701
LIMITER
Q702
LIMITER
Q651
LIMITER
Q652
LIMITER
Q501
LIMITER
Q502
51
REAR RY
BOOSTER
Q703
Q707
D202
D201
D506
Q659
D706
D606
OVER LOAD
DETECT
PROTECT
SWITCH
1
Q708,709
OVER LOAD
DETECT
Q657,658
OVER LOAD
DETECT
Q507,509
IC203
REMOTE CONTROL RECEIVER
RESET
Q201,202
2
61
3
HP SW
48
CURRENT Q705,706
CURRENT Q655,656
CURRENT Q505,506
IC401
1
POWER RY
DETECT
DETECT
DETECT
SIRCS
RESET
STOP
VDD VDD VDD
D721
Q722,723,725
26
1VDD 16 34 46
10
39
BOOSTER
Q704
BOOSTER
Q653
BOOSTER
Q654
BOOSTER
Q503
BOOSTER
Q504
52
55
CTR RY
WOOFER RY
.
D731
D735
D734
D736
POWER AMP
-B
FL201
-24V
POWER AMP
+12V
RELAY
+B
DOLBY SURR
+9V
DISPLAY
+5V(A)
TUNER,RDS
AUDIO +5V(B)
AUDIO
+7V
AUDIO
-7V
-B SW Q715
-24V REG Q801
IC801
+12V
3 1
REG
IC805
+9V
3 1
REG
IC803
+5V
3 1
REG
IC804
+5V
3 1
REG
IC807
+7V
3 1
REG
IC802
-7V
3 2
REG
RELAY DRIVE
Q791
RELAY DRIVE
Q730
RELAY DRIVE
Q610
RELAY DRIVE
Q550
RELAY DRIVE
Q470
D824
8
RY791
RY710
RY610
RY510
RY470
+5.6V REG
Q951
POWER
CONTROL
IC950
SUB WOOFER
AUDIO OUT
T901
T902
D915D914
RY901
J200
PHONES
SPEAKERS
FRONT
SPEAKERS
SURROUND
SPEAKERS
CENTER
240V 220V 120V
0V
VOLTAGE
SELECTOR
CNP901
E MODEL
S901
AC IN
99
STR-DE375
3-3. PRINTED WIRING BOARD – MAIN SECTION –
IC 805
IC 1
TUNER
UNIT
TO
IC 202
IC 201
C 416
R 408
IC 401
IC 807
C 417
IC 803
C 467
C 468
IC 501
IC 701
IC 702
IC 801
IC 802
IC 804
Semiconductor Location
Ref. No. Location
D301 D-1 D470 C-8 D505 F-4 D506 F-4 D508 F-3 D510 C-10 D605 F-8 D606 F-8 D607 F-7 D608 F-8 D610 C-9 D627 F-11 D706 F-6 D710 C-11 D721 E-11 D722 D-11 D725 G-10 D726 F-10
Ref. No. Location Ref. No. Location
D727 F-5 D728 F-6 D731 C-10 D732 D-11 D734 C-10 D735 C-9 D736 C-8 D757 F-9 D791 F-12 D801 E-13 D802 C-13 D804 E-13 D820 E-12 D821 E-13 D822 E-13 D823 D-12 D824 D-12 D825 D-13
IC1 C-1 IC201 D-5 IC202 D-3 IC401 C-7 IC501 E-5 IC701 E-7 IC702 E-8 IC801 D-11 IC802 D-12 IC803 D-12 IC804 E-12 IC805 B-2 IC807 C-8
Q361 D-7 Q362 D-8 Q363 D-8 Q364 D-9
Ref. No. Location
Q365 D-7 Q366 D-8 Q470 C-8 Q501 F-2 Q502 G-3 Q503 G-3 Q504 G-4 Q505 F-3 Q506 F-3 Q507 F-4 Q509 F-4 Q550 C-10 Q601 F-10 Q602 G-11 Q603 G-10 Q604 G-11 Q605 G-12 Q606 F-11
Ref. No. Location Ref. No. Location
Q610 C-9 Q651 F-6 Q652 G-7 Q653 G-7 Q654 G-8 Q655 F-7 Q656 G-8 Q657 F-8 Q658 F-8 Q659 F-8 Q701 F-4 Q702 G-5 Q703 G-5 Q704 G-6 Q705 F-6 Q706 F-5 Q707 F-6
Q709 F-6 Q715 E-10 Q722 D-11 Q723 D-11 Q725 D-11 Q730 C-11 Q751 F-9 Q752 G-9 Q753 G-9 Q754 G-10 Q755 E-9 Q756 F-9 Q757 F-10 Q758 F-10 Q759 F-10 Q791 G-12 Q801 F-13
Q708 F-6
TO
DISPLAY
BOARD
(Page 14)
1010
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