Sony STRDE-135 Service manual
STR-DE135
SERVICE MANUAL
Photo: US model
SPECIFICATIONS
Audio power specifications (US model)
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
Stereo mode (8 ohms at 20 Hz – 20 kHz less than
Frequency response TV/SAT, CD, MD/TAPE, VIDEO
Inputs
Sensitivity Impedance S/N
CD,
MD/TAPE,
TV/SAT, kilohms
VIDEO
CD,
MD/TAPE,
TV/LD, kilohms
VIDEO
outputs MD/TAPE REC OUT:
150 mV
Sensitivity Impedance S/N
150 mV
0.09 % total harmonic distortion)
100 W + 100 W (US model)
(DIN 1 kHz, 4 ohms)
60 W + 60 W (AEP, UK models)
TV/LD, CD, MD/TAPE, VIDEO
10 Hz – 50 Hz ± 1 dB
50
50
Voltage: 150 mV,
impedance: 10 kilohms
VIDEO AUDIO OUT:
Voltage: 150 mV,
impedance: 10 kilohms
PHONES: Accepts low and high
impedance headphones
(US model)
(AEP, UK models)
78 dB
(US model)
78 dB
(AEP, UK models)
US Model
AEP Model
UK Model
Muting Full mute
BASS BOOST + 10 dB at 70 Hz
TONE ± 8 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 ohms, unbalanced
Intermediate frequency 10.7 MHz
Sensitivity Mono: 18.3 dBf, 4.5 µV
Usable sensitivity 11.2 dBf, 2 µV (IHF) (US model)
S/N Mono: 76 dB
Harmonic distortion at 1 kHz Mono: 0.3 %
Separation 45 dB at 1kHz
Frequency response 30 Hz – 15 kHz dB
Selectivity 60 dB at 400 kHz
AM tuner section
Tuning range 10 kHz interval*
Stereo: 38.3 dBf, 45 µV (US model)
Mono: 18.3 dBf, 2.2 µV/75 ohms
Stereo: 38.3 dBf, 22.5 µV/75 ohms
11.2 dBf, 1 µV/75 ohms (IHF)
Stereo: 70 dB
Stereo: 0.5 %
530 – 1710 kHz
9 kHz interval
531 – 1710 kHz (US model)
531 – 1602 kHz (AEP, UK models)
– Continued on next page –
(AEP, UK models)
(AEP, UK models)
+0.5
–2
FM STEREO/FM-AM-RECEIVER
MICROFILM
Antenna Loop antenna
Intermediate frequency 450 kHz
Usable sensitivity 50 dB/m (at 1,000 kHz)
S/N 54 dB (at 50 mV/m)
Harmonic distortion 0.5 % (50 mV/m, 400Hz)
Selectivity At 10 kHz: 40 dB
At 9 kHz: 35 dB (US model)
35 dB (AEP, UK models)
* You can change the AM tuning interval between 9 kHz and 10kHz.
After tuning in any AM station, turn off the receiver. Hold down the
PRESET TUNING + button and press the 1/u (power) button. All pr eset stations will be erased when you change the interval. To reset the
interval, repeat the procedure. (US model)
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 (US model)
230 V AC, 50/60 Hz
(AEP, UK models)
Power consumption 155 W (US model)
135 W (AEP, UK models)
AC outlets 1 switched, total 120 W/1A Max
(US, UK models)
switch 100 W max (AEP model)
Dimensions 430 × 144 × 306 mm
(17 × 56/8 × 124/8 inches)
Mass (Approx.) 8.1 kg (17 lb 13 oz) (US model)
6.7 kg (AEP, UK models)
Supplied accessories FM wire antenna (1)
AM loop antenna (1)
Remote commander (remote) (1)
Size AA (R6) batteries (2)
Specifications indicated are measured at 230 V AC, 50Hz.
(AEP, UK models)
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY ......................................................... 5
4. TEST MODE ............................................................... 7
5. DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 9
5-2. Printed Wiring Board – MAIN Board – ........................ 11
5-3. Schematic Diagram – MAIN Board (1/2) –.................. 13
5-4. Printed Wiring Boards
– DISPLAY Board/KEY Board/VOLUME Board/
TONE Board/POWER SWITCH Board –................... 15
5-5. Schematic Diagram
– PANEL Section – ......................................................... 19
5-6. Printed Wiring Boards
– PANEL Section – ......................................................... 23
5-7. Schematic Diagram
– MAIN Board (2/2)/SPK SWITCH Board/
SECONDARY Board/PRIMARY Board/
STANDBY TRANS Board – ....................................... 25
5-8. IC Pin Function Description ........................................... 26
6. EXPLODED VIEWS ................................................ 28
7. ELECTRICAL PARTS LIST ............................... 31
Design and specifications are subject to change without notice.
SAFETY-RELA TED COMPONENT W ARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! 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 .
– 2 –
SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
– Rear view –
MODEL PART No.
US model 4-216-802-0π
AEP model 4-216-802-1π
UK model 4-216-802-2π
PART No.
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.
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 microampers.).
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. Follo w 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 lowvoltage 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 2 V A C range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
Ω
Earth Ground
AC
voltmeter
(0.75 V)
– 3 –
Location of controls
• Front view –
SECTION 2
GENERAL
1
!£
!¢
1 I/u button
2 TUNING +, – buttons (US model)
TUNING/CHAR +, – buttons
(AEP, UK models)
3 NAME button (AEP, UK models)
4 PRESET/TUNING +, – buttons
(US model)
PRESET/PTY SELECT +, – buttons
(AEP, UK models)
5 DISPLAY button (AEP, UK models)
6 RDS PTY button (AEP, UK models)
7 AM button (US model)
RDS EON button (AEP, UK models)
2
3
!∞
45
67
!§!¶
8 FM button (US model)
FM/AM button (AEP, UK models)
9 VIDEO button
0 TV/SAT button (US model)
TV/LD button (AEP, UK models)
!¡ MD/TAPE button
!™ BASS BOOST button and indicator
!£ SPEAKERS A, B ON/OFF buttons
!¢ PHONES jack
!∞ SHIFT button
!§ Numeric buttons
!¶ DIRECT button
8
!ª @º
!•
9
0
!¡
@¡
@™
!™
@¢
@∞
@§
@£
!• MEMORY button (US model)
MEMORY/ENTER button
(AEP, UK models)
!ª FM MODE button
@º TUNER button
@¡ CD button
@™ VOLUME control
@£ MUTING button and indicator
@¢ TREBLE control
@∞ BASS control
@§ BALANCE control
• Rear view –
– 4 –
SECTION 3
s
)
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
CASE
1
two tapping screws
1
tapping screw
2
case
1
two tapping screw
FRONT PANEL SECTION
2
three connectors
(CNP702 – 704)
4
claw
5
front panel
section
3
screw
(BVTP3
×
8)
1
two flat wires
(CNS204, CNP404
4
claw
– 5 –
3
four screws
(BVTP3
×
8)
REAR PANEL SECTION
)
2
connector
(CNP901)
4
rear panel section
3
four screws
(BVTP3
×
8)
1
flat wire
(CNS205)
3
six screws
(BVTP3
×
8
MAIN BOARD
2
two connectors
(CNP703, 704)
2
connector
(CNS802)
2
connector
(CNP702)
3
three screws
(BVTP3
×
8)
3
three screws
(BVTP3
5
1
×
8)
MAIN board
two flat wires
(CNS204, CNP404)
4
PC board holder
– 6 –
2
connector
(CNP801)
SECTION 4
TEST MODE
Fluorescent Indicator Tube Test Mode
All fluorescent segments are tested. When this test is activ ated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1. While pressing two buttons of [TV/SAT] (US model)* and
[DIRECT] simultaneously, press the 1/u button to turn the
power ON.
2. All segments turn on at the same time, then each segment turns
on one after another.
3. The message “FINISH” appears when this test is complete.
*) AEP, UK models are [TV/LD]
AUTO-BETICAL Check Mode (AEP, UK models)
To auto-scanning and memories of RDS station.
Procedure:
1. While pressing the [MEMORY/ENTER] button, press the
1/u button to turn the power ON.
2. The message “AUTO BET” appears and each function is selected one after another.
AM Tuning Interval Selection Mode (US model)
Either 9 kHz step or 10 kHz step can be selected for the AM tuning interval.
Procedure:
1. Set the FUNCTION to AM.
2. Press the 1/u button to turn the power OFF.
3. While pressing the [TUNING+] button, press the 1/u button to
turn the power ON.
4. Either the message “9k STEP” or “10k STEP” appears.
5. Select the desired step.
Software Version Display Mode
The software version is displayed.
Procedure:
1. While pressing two the buttons of [MD/TAPE] and [DIRECT]
simultaneously, press the
2. The software version is displayed.
1/u button to turn the power ON.
– 7 –
• Circuit Boards Location
POWER SWITCH board
SECTION 5
DIAGRAMS
SECONDARY board
PRIMARY board
ST ANDBY TRANS
board
DISPLAY board
MAIN board
SPK SWITCH
board
VOLUME board
KEY board
TONE board
– 8 –
5-1. NOTES FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
1.6 Vp-p
4.33 MHz
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
Q
B
CE
These are omitted.
Q
B
CE
These are omitted.
Note on Schematic Diagram:
• 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.
¢
•
• 2 : nonflammable resistor.
• C : panel designation.
Note: The components identified by mark ! or dotted line
• U : B+ Line.
• V : B– Line.
• Voltages and waveforms are dc with respect to ground
• V oltages are taken with a V OM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
: internal component.
with mark ! are critical for safety.
Replace only with part number specified.
under no-signal (detuned) conditions.
no mark : FM
Voltage variations may be noted due to normal production tolerances.
Voltage variations may be noted due to normal production tolerances.
F : FM
4
W or less unless otherwise
• Waveforms
– MAIN Board –
1 IC1 !¢ (XO)
– DISPLAY Board –
1 IC201 #∞ (X2)
5.4 Vp-p
4.19 MHz
– 9 – – 10 –
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