STR-DE135 SERVICE MANUAL
US Model AEP Model UK Model
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
Frequency response
(8 ohms at 20 Hz – 20 kHz less than 0.09 % total harmonic distortion) 100 W + 100 W (US model) (DIN 1 kHz, 4 ohms) 60 W + 60 W (AEP, UK models) TV/SAT, CD, MD/TAPE, VIDEO (US model) TV/LD, CD, MD/TAPE, VIDEO (AEP, UK models) 10 Hz – 50 Hz ± 1 dB
Muting BASS BOOST TONE
Tuner Section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range Antenna terminals Intermediate frequency Sensitivity
Usable sensitivity
S/N
Inputs CD, MD/TAPE, TV/SAT, VIDEO
CD, MD/TAPE, TV/LD, VIDEO
Sensitivity
Impedance
S/N
150 mV
50 kilohms
78 dB
Sensitivity
Impedance
150 mV
50 kilohms
(US model) S/N 78 dB (AEP, UK models)
outputs
MICROFILM
MD/TAPE REC OUT: Voltage: 150 mV, impedance: 10 kilohms VIDEO AUDIO OUT: Voltage: 150 mV, impedance: 10 kilohms PHONES: Accepts low and high impedance headphones
Full mute + 10 dB at 70 Hz ± 8 dB at 100 Hz and 10 kHz
Harmonic distortion at 1 kHz Separation Frequency response Selectivity AM tuner section Tuning range
87.5 – 108.0 MHz 75 ohms, unbalanced 10.7 MHz Mono: 18.3 dBf, 4.5 µV 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 (AEP, UK models) 11.2 dBf, 2 µV (IHF) (US model) 11.2 dBf, 1 µV/75 ohms (IHF) (AEP, UK models) Mono: 76 dB Stereo: 70 dB Mono: 0.3 % Stereo: 0.5 % 45 dB at 1kHz 30 Hz – 15 kHz +0.5 –2 dB 60 dB at 400 kHz
10 kHz interval* 530 – 1710 kHz 9 kHz interval 531 – 1710 kHz (US model) 531 – 1602 kHz (AEP, UK models) – Continued on next page –
FM STEREO/FM-AM-RECEIVER
STR-DE135
5-3.
SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 10 for Waveform.
• See page 21 for IC Block Diagrams.
(Page 25)
(Page 20)
(Page 25)
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The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
(Page 19)
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STR-DE135 5-5.
SCHEMATIC DIAGRAM – PANEL Section – • See page 10 for Waveform. • See page 22 for IC Block Diagram.
(Page 14)
100k
(Page 13)
The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
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STR-DE135
• IC Block Diagrams – MAIN Board –
– DISPLAY Board –
IC1
IC202 BA6208
RDCL
TS7
OSCO
OSCI
VDDD
VSSD
TEST
TSTLD
BU1922 (AEP, UK models)
16
15
14
13
12
11
10
9
TEST LOGIC AND OUTPUT SELECTOR SWITCH
SWITCH
MOTOR DRIVE
SWITCH
MOTOR DRIVE
3
4
5
6
7
8
9
Vcc
OUTPUT 2
OUTPUT1
NC
CLOCKED COMPARATOR
2
GND
CONTAS LOOP VARIABLE AND FIXED DIVIDER
1
NC
BIPHASE SYMBOL DECODER
ANTIALIASING FILTER
INPUT 2
DEFFERENTIAL DECODER
57kHz BANDPASS (8th ORDER)
RECONSTRUCTION FILTER
INPUT 1
OSCILLATOR AND DIVIDER
NC
REG
QUALITY BIT GENERATOR
CLOCK REGENERATION AND SYNC
VP1
3
4
5
6
OUT
IN
OUT
RDDA
Vref
MUX
VDDA
VSSA
1
30
2
29 IN
3
28
4
27 OUT
5
26
CR
1
VSC
2
–
6
25 IN
7
24
8
23 OUT
9
22
10
21
VREF
8
RESET
7
VSA
6
VSB/SESIN
5
V+
+
+ –
OUTC
3
GND
4
IN
IN
OUT
11
VEE
12
20 OUT
LEVEL SHIFT
LATCH
CONTROL
CE 13 DI
8
IC950 NJM2103D
IC401 LC78212
IN
7
SCOUT
2
CIN
1
QUAL
REFERENCE VOLTAGE
14
CL 15
19 VDD
Q
18 RESET
R
S
+
–
+ –
17 S SHIFT RESISTOR
16 VSS
IC701 µPC2581V BIAS CIRCUIT
PROTECTOR PRE DRIVE
2
3
4
5
6
7
8
9
10
11
12
– VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2
+ VOUT2
13 14 15 VCC2 VEE
1
+ VOUT1
DRIVE
VCC1
PRE DRIVE
DRIVE
MUTE
REG
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– 22 –
STR-DE135
5-7.
SCHEMATIC DIAGRAM – MAIN Board (2/2)/SPK SWITCH Board/SECONDARY Board/ PRIMARY Board/STANDBY TRANS Board –
R742 1.2k 1/2W
R792 1.2k 1/2W
(Page 14)
(Page 14)
(Page 14)
The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
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