STR-DE245, STR-DE345 — Sony Audio Service Manual (repair manual)

Model
STR-DE245 STR-DE345
Pages
32
Size
4.93 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-de245-str-de345.pdf
Date

View Sony STR-DE245 / STR-DE345 Service Manual online

STR-DE245/DE345
AEP Model
UK Model
E Model
Australian Model
STR-DE245/DE345
US Model
Canadian Model
Chinese Model
PX Model
STR-DE345
SERVICE MANUAL
FM STEREO FM-AM RECEIVER
SPECIFICATIONS
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.
Photo: STR-DE345
— Continued on next page —
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 8-ohm load, both channels driven, from 20
 
20,000 Hz rated 100 watts per channel minimum
RMS power, with no more than 0.09%
 
total
harmonic distortion from 250 milliwatts to rated
output.
Amplifier section
Rated Power Output at
(8 
 at 20 Hz – 20 kHz,
Stereo Mode
THD 0.09 %)
100W + 100W
Reference Power Output
(8
 at 1 kHz, THD 0.7%)
Front: 100 W + 100 W
Center: 100 W
Rear: 100 W + 100 W
Frequency response
TV/SAT, CD, MD/TAPE,
VIDEO, 5.1CH/DVD
10 – 50 kHz        dB
Inputs
Sensitivity
Impedance
S/N
CD,
5.1CH/
DVD,
MD/TAPE,
150 mV
50
85 dB
TV/SAT,
kilohms
VIDEO
Outputs
MD/TAPE REC 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
Muting
Full mute
BASS BOOST
+6 dB at 70 Hz
TONE
±6 dB at 100 Hz and
10 kHz
Tuner section
FM Stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna terminals
75 
, unbalanced
Intermediate frequency
10.7 MHz
Sensitivity
Mono: 18.3 dBf, 4.5 µV
Stereo: 38.3 dBf, 45 µV
Usable sensitivity
11.2 dBf, 2 µV (IHF)
S/N
Mono: 76 dB
Stereo: 70 dB
Harmonic
Mono: 0.3 %
distortion at 1 kHz
Stereo: 0.5 %
Separation
45 dB at 1 kHz
Frequency response
30 Hz –15 kHz       dB
Selectivity
60 dB at 400 kHz
+0.5
–2.0
+0.5
–2.0
AM tuner section
Tuning range
10 kHz interval*
   530 – 1,710 kHz
9 kHz interval
   531 – 1,710 kHz
Antenna
Loop antenna
Intermediate frequency
450 kHz
Usable sensitivity
50 dB/m (at 1,000 kHz
or 999 kHz)
S/N
54 dB (at 50 mV/m)
Harmonic distortion
0.5 % (50 mV/m, 400
Hz)
Selectivity
At 10 kHz: 40 dB
At 9 kHz: 35 dB
* You can change the AM tuning interval between 9
kHz and 10 kHz. Turn off the receiver and press
the ?/1 (power) for more than 4 seconds until
“INITIAL” appears.
1) After turning in any AM station, turn off the
receiver.
2) Hold down PRESET TUNING + button and
press the ?/1 (power) button .
“9 k STEP” appears.
To change to 10 k Step, repeat step 1 and 2
until “10 k STEP” appears. Note that all preset
stations, index names and sound field are
cleared after you make the procedure above.
Ver 1.0  2000. 02
2
VIDEO section
Inputs
VIDEO, TV/SAT, 5.1CH/DVD:
   1 Vp-p 75 
Outputs
VIDEO, MONITOR:
   1 Vp-p 75 
General
System
Tuner section: PLL
   quartz-locked digital
   synthesizer system
Preamplifier section:
   Low-noise NF type
   equalizer
Power amplifier section:
   Pure-complementary
   SEPP
Power requirements
120 V AC, 60 Hz
Power consumption
235 W
Dimensions
17 
×
 5
6
/
8
 
×
 12 inches)
(430 
×
 145 
×
 304 mm)
Mass (Aporox.)
7.3 kg (16 lb 2 oz)
Supplid accessories
FM wire antenna (1)
AM loop antenna (1)
Remote commander (remote) (1)
Size AA (R6) batteries (2)
Operating Instructions of the remote RM-PP404
Design and specifications are subject to change without notice.
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
MODEL
PARTS No.
DE345:  US model
4-226-462-0s
DE345:  Canadian model
4-226-462-1s
DE345:  Australian model
4-226-462-2s
DE345:  Singapore, Malaysia model
4-226-462-3s
DE345:  Chinese model
4-226-462-4s
DE345:  E, Saudi Arabia, PX model
4-226-462-5s
DE345:  AEP model
4-226-462-6s
DE345:  Russian, East European model
4-226-462-7s
DE345:  Mexican model
4-226-462-8s
DE345:  Argentine model
4-226-462-9s
DE245:  Australian model
4-226-468-2s
DE245:  Singapore, Malaysia model
4-226-468-3s
DE245:  E, Saudi Arabia model
4-226-468-4s
DE245:  AEP, UK model
4-226-468-5s
DE245:  Mexican, Russian,
 East European model
4-226-468-6s
3
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.
    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 AC leakage. Check leakage as
described below.
LEAKAGE
    The AC leakage from any exposed metal part to earth ground 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. Follow the manufacturers’ 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 AC 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 are 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)
SAFETY  CHECK-OUT
To Exposed Metal 
Parts on Set
0.15 
µ
F
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
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.
TABLE OF CONTENTS
1. GENERAL
·········································································· 4
2. TEST MODE
······································································ 6
3. DIAGRAMS
3-1. Block Diagram ······························································ 7
3-2. IC Block Diagrams ························································ 8
3-3. IC Pin Function Description ·········································· 8
3-4. Circuit Boards Location ················································ 9
3-5. Printed Wiring Board   Main Section ·························· 10
3-6. Schematic Diagram   Main Section (1/3) ···················· 11
3-7. Schematic Diagram   Main Section (2/3) ···················· 12
3-8. Schematic Diagram   Main Section (3/3) ···················· 13
3-9. Printed Wiring Board   Panel Section ·························· 14
3-10. Schematic Diagram    Panel Section ··························· 15
3-11. Printed Wiring Board   Power Section ························ 16
3-12. Schematic Diagram    Power Section ·························· 17
3-13. Printed Wiring Board   Video Section ························· 18
3-14. Schematic Diagram    Video Section ··························· 18
4. EXPLODED VIEWS
4-1. Front Panel Section ····················································· 19
4-2. Chassis Section ···························································· 20
5. ELECTRICAL PARTS LIST
······································· 21
4
SECTION 1
GENERAL
Front Panel
1
qs   
4
5
6
7
8
9
qa
2
3  
0
1
I/
1
 (POWER) button
2
SPEAKERS ON/OFF SWITCH button
3
PHONE jack
4
VIDEO  button
TV/SAT button
5.1CH/DVD button
MD/TAPE button
CD button
TUNER button
5
SOUND FIELD ON/OFF,
MODE  + ,  –  buttons
BASS  + ,  –  buttons
TREBLE  + ,  –  buttons
6
MENU  < ,  > ,  + ,  –  buttons
7
MASTER VOLUME control
8
MUTING button
BASS BOOST botton
9
PRESET/PTY SELECT   + ,  –  buttons
TUNING  + ,  –  buttons
FM/AM button
FM MODE button
SHIFT button
MEMORY button
0
SET UP button
NAME button
ENTER button
qa
SOUND CONTROL LEVEL,SUR buttons
qs
DIMMER button
DISPLAY button
5
Rear Panel
This section is extracted
from instruction manual.

Download Sony STR-DE245 / STR-DE345 Service Manual (Repair Manual)

Here you can view online or download Sony STR-DE245 / STR-DE345 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony STR-DE245 / STR-DE345 Audio. Information contained in Sony STR-DE245 / STR-DE345 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).