Sony STR-DE185 Service Manual ▷ View online
2
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.
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.
STR-DE185
AM tuner section
Tuning range
Models of area code US
With 10-kHz tuning scale: 530 – 1710 kHz
With 10-kHz tuning scale: 530 – 1710 kHz
4)
With 9-kHz tuning scale: 531 – 1710 kHz
4)
Models of area code AEP, UK
With 9-kHz tuning scale: 531 – 1602 kHz
With 9-kHz tuning scale: 531 – 1602 kHz
Antenna
Loop antenna
Intermediate frequency
450 kHz
Usable sensitivity
50 dB/m (at 1,000 kHz or
999 kHz)
999 kHz)
S/N
45 dB (at 50 mV/m)
Harmonic distortion
1.0 % (50 mV/m,
400 Hz)
400 Hz)
Selectivity
At 9 kHz:
At 9 kHz:
35 dB
At 10 kHz:
40 dB
4) You can change the AM tuning scale to 9 kHz or
10 kHz. After tuning in any AM station, turn off
the receiver. Hold down PRESET TUNING + and
press ?/1. All preset stations will be erased when
you change the tuning scale. To reset the scale to
10 kHz (or 9 kHz), repeat the procedure.
the receiver. Hold down PRESET TUNING + and
press ?/1. All preset stations will be erased when
you change the tuning scale. To reset the scale to
10 kHz (or 9 kHz), repeat the procedure.
General
Power requirements
Area code
Power consumption
US
120 V AC, 60 Hz
AEP, UK
230 V AC, 50/60 Hz
Power consumption
Area code
Power consumption
US
190 W
AEP, UK
210 W
Power consumption (during standby mode)
0.5 W (for models of all area code)
AC outlets
Area code
AC outlets
US
1 switched, 120 W/1A MAX
AEP, UK
1 switched, 100 W MAX
Dimensions
430
× 145 × 300 mm
(16
7/8
× 5
6/8
× 11
6/8
in.)
including projecting parts
and controls
and controls
Mass (Approx.)
7.0 kg (15 lb 7 oz)
Supplied accessories
FM wire antenna (1)
AM loop antenna (1)
Remote commander RM-U185 (1)
R6 (size-AA) batteries (2)
AM loop antenna (1)
Remote commander RM-U185 (1)
R6 (size-AA) batteries (2)
Design and specifications are subject to change without
notice.
notice.
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
MODEL
PART No.
US
4-238-277-0s
AEP
4-238-277-1s
UK
4-238-277-2s
3
TABLE OF CONTENTS
1. GENERAL
Main unit ................................................................................. 4
Remote button description ....................................................... 5
Remote button description ....................................................... 5
2. DISASSEMBLY
2-1. Case ..................................................................................... 6
2-2. Front Panel Section ............................................................. 7
2-3. Back Panel ........................................................................... 7
2-4. Main Board ......................................................................... 8
2-2. Front Panel Section ............................................................. 7
2-3. Back Panel ........................................................................... 7
2-4. Main Board ......................................................................... 8
3. TEST MODE
........................................................................ 9
4. DIAGRAMS
4-1. IC Pin Description ............................................................. 10
4-2. Circuit Boards Location .................................................... 11
4-3. Block Diagram – Main Section – ...................................... 12
4-4. Block Diagram – Power Section – .................................... 13
4-5. Printed Wiring Board – Main Section – ............................ 14
4-6. Printed Wiring Boards – H/P, Outlet Section – ................. 15
4-7. Schematic Diagram – Main Section (1/2) – ...................... 16
4-8. Schematic Diagram – Main Section (2/2) – ...................... 17
4-9. Schematic Diagram – Display Section – ........................... 18
4-10. Printed Wiring Board – Display Section – ........................ 19
4-11. Printed Wiring Board – Power SW Section – ................... 20
4-2. Circuit Boards Location .................................................... 11
4-3. Block Diagram – Main Section – ...................................... 12
4-4. Block Diagram – Power Section – .................................... 13
4-5. Printed Wiring Board – Main Section – ............................ 14
4-6. Printed Wiring Boards – H/P, Outlet Section – ................. 15
4-7. Schematic Diagram – Main Section (1/2) – ...................... 16
4-8. Schematic Diagram – Main Section (2/2) – ...................... 17
4-9. Schematic Diagram – Display Section – ........................... 18
4-10. Printed Wiring Board – Display Section – ........................ 19
4-11. Printed Wiring Board – Power SW Section – ................... 20
5. EXPLODED VIEWS
5-1. Case Section ...................................................................... 21
5-2. Front Panel Section ........................................................... 22
5-3. Chassis Section ................................................................. 23
5-2. Front Panel Section ........................................................... 22
5-3. Chassis Section ................................................................. 23
6. ELECTRICAL PARTS LIST
......................................... 24
STR-DE185
1.5 k
Ω
0.15
µF
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check 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.
safety check 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 TEST
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.
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.
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)
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)
4
STR-DE185
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
List of Button
Locations and
Reference Pages
5
GB
List of Button Locations and Reference Pages
Main unit
How to use this page
Use this page to find the location of buttons that are
mentioned in the text.
mentioned in the text.
Illustration number
r
NAME 5 (18)
R
R
Name of button/part
Reference page
ALPHABETICAL ORDER
A – H
AM 8 (13, 14)
BALANCE L/R q; (12)
BASS +/– wa (12)
BASS BOOST ql (12)
CD qg (8, 12)
DIRECT wg (13)
DISPLAY qa (12, 16)
Display 9 (11-16, 18, 19)
FM 6 (13, 14)
FM MODE wd (14)
BALANCE L/R q; (12)
BASS +/– wa (12)
BASS BOOST ql (12)
CD qg (8, 12)
DIRECT wg (13)
DISPLAY qa (12, 16)
Display 9 (11-16, 18, 19)
FM 6 (13, 14)
FM MODE wd (14)
I – O
IR (receptor) 2 (4, 22)
SHIFT wh (15)
SLEEP (models of area code U)
SLEEP (models of area code U)
4
(19)
SPEAKERS A wj (10, 12)
SPEAKERS B wk (10, 12)
SPEAKERS B wk (10, 12)
T – Z
TREBLE +/– w; (12)
TUNER qh (8, 12-15, 18)
TUNING/CHAR +/– ws (14, 18)
VIDEO 1 qs (12)
VIDEO 2 qd (8, 12)
TUNER qh (8, 12-15, 18)
TUNING/CHAR +/– ws (14, 18)
VIDEO 1 qs (12)
VIDEO 2 qd (8, 12)
BUTTON DESCRIPTIONS
?/1
(power) 1 (11, 13, 23)
MASTER VOLUME qj (12, 20)
MD/TAPE qf (8, 12)
MEMORY/ENTER wf (13, 15,
MD/TAPE qf (8, 12)
MEMORY/ENTER wf (13, 15,
18)
MUTING qk (12, 20)
NAME 5 (18)
Numeric buttons 3 (13)
NAME 5 (18)
Numeric buttons 3 (13)
P – S
PHONES wl (12, 21)
PRESET/PTY SELECT +/–
PRESET/PTY SELECT +/–
(models of area code CEL,
CEK) 7 (15, 16)
CEK) 7 (15, 16)
PRESET TUNING +/– (models of
area code U) 7 (15, 23)
PTY (models of area code CEL,
CEK) 4
(16)
1
2
3
456
7
8
9q;
qa
qs qd qf qg qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
wh
wj
wk
wl
5
STR-DE185
24
GB
Remote button description
You can use the remote RM-U185 to operate
the components in your system.
the components in your system.
>10
0
7
8
9
4
5
6
1
2
3
ENTER
CD
VIDEO 2
MD/TAPE
VIDEO 1
DVD
•
TUNER
SYSTEM
STANDBY
SHIFT
–
CH/PRESET
+
TREBLE
–
MUTING
BASS BOOST
TV/VIDEO
– /– –
ANT
TV/VTR
+
BASS
–
+
TV VOL
TV CH
+
+
–
–
L BALANCE R
MASTER
VOL
RETURN
D. TUNING
TOP MENU
DVD MENU
ENTER
f
F
G
g
SLEEP
AV
?/1
?/1
D.SKIP
The tables below show the settings of each
button.
button.
Remote
Operations
Function
Button
SLEEP
Receiver
Activates the sleep
function and the duration
which the receiver turns
off automatically.
function and the duration
which the receiver turns
off automatically.
?/1
Receiver
Turns the receiver on or
off.
off.
VIDEO 1
Receiver
To watch VCR.
(VTR mode 3)
(VTR mode 3)
VIDEO 2
Receiver
To watch VCR.
(VTR mode 1)
(VTR mode 1)
DVD
Receiver
To watch DVD.
MD/TAPE
Receiver
To listen to Minidisc or
audio tape.
audio tape.
CD
Receiver
To listen to compact disc.
TUNER
Receiver
To listen to radio
programs.
programs.
SHIFT
Receiver
Press repeatedly to select
a memory page for
presetting radio stations
or tuning to preset
stations.
a memory page for
presetting radio stations
or tuning to preset
stations.
D.TUNING Receiver
Tuner station direct
key-in-mode.
key-in-mode.
BALANCE Receiver
Adjust the balance.
L/R
BASS
Receiver
Reinforce the bass.
BOOST
TREBLE
Receiver
Adjust the treble tone
+/–
quality.
MUTING Receiver
Mutes the sound from the
receiver.
receiver.
BASS +/– Receiver
Adjust the bass tone
quality.
quality.
Note
When you press the function buttons (VIDEO 1,
VIDEO 2, DVD), the input mode of the TV might not
switch to the corresponding input mode that you
want. In this case, press the TV/VIDEO button to
switch the input mode of the TV.
VIDEO 2, DVD), the input mode of the TV might not
switch to the corresponding input mode that you
want. In this case, press the TV/VIDEO button to
switch the input mode of the TV.
X
x
N
m
M
.
>
O
