Sony XR-C453RDS, Руководство по обслуживанию

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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
/
4
W or less unless otherwise
specified.
•
: internal component.
•
: B+ Line.
•
Power voltage is dc 14.4 V and fed with regulated dc power
supply from battery and accessory terminals.
•
Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
•
Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
: FM
: MW (LW)
: TAPE PLAYBACK
: BUS AUDIO IN
•Semiconductors Operation Name
Ref. No. Operation Name
IC1 FM/AM PLL
IC3 RDS Decoder
IC151 Electrical Volume
IC351 Tape Equalizer Amp
IC360
Loading/Tape Operation
Motor Drive
IC501 System Controller
Q2 Regulator (for FM/AM PLL)
Q101 Tuner Mute
Q201 Tuner Mute
Q361 Regulator (tape on)
Q362 Regulator Control Switch
Q364 Capstan/Reel Motor Drive
Q365 Capstan/Reel Motor Drive
Q501 Tuner Mute Control Switch
Q503 Signal Meter Buffer
• Smiconductors Pin Voltage
ICs/Tuner Unit:
No. IC1 IC3 IC151 IC351 IC360 TU1
IC501
1 2.4 2.6 4.2 <3.7> GND 0 No. Volts No. Volts
2 NC 2.6 4.3 <3.7> <4.8> 0 1 0 41 4.8
3 0 5.1 4.3 <3.7> <8.9> GND 2 4.8 42 0
4 0 NC 4.3 <3.7> <4.8> 0.1 3 4.8 43 4.8
5 0 GND 4.3 <3.7> GND
*
2
4 4.8 44 4.8
6 4.6 NC 4.3 <3.7> <0> 5.8 5 4.8 45 2.4
7 6 NC 4.3 <3.6> <8.9> GND 6 4.8 46 2.4
8 NC NC GND NC <0> 8.7 (0.2) 7 4.8 47 4.8
9 NC 2.6 GND NC 8.3 8 2 48 4.8
10 NC 2.6 4.3 <3.8> 0.2 (8.7) 9 2.3 49 4.8
11 0.1 NC 4.3 <3.8> 0 (2) 10 GND 50 4.8
12 0.2 2.6 4.3 <0> 0 (2.2) 11 1.7 51 4.8
13 2.6 1.6 (0.8) 4.3 GND 4.6 12 GND 52 4.6
14 5.1 NC 4.3 <0> NC 13 2.5 53 0
15 2.5 (0.2) NC GND GND 3.8 (0) 14 4.8 54 0
16 0 (2.5) 5.1 0 NC GND 15 4.8 55 0
17 GND NC 0 <0> 3.8 (0) 16 0 56 4.7
18 2.5 (0.2) NC 0 <0> 0.5 (0) 17 0 57 0
19
*
1 NC 4.3 <0> 0 (5.1) 18 0 58 GND
20 0 (2.4) NC 4.3 <4.3> 0.2 19 0 59 GND
21 9 4.3 <0> 5.1 20 0 60 GND
22 4.6 4.3 NC 5 (0) 21 0 61 0
23 GND 4.3 NC 22 0 62 4.9
24 2.4 4.3 <3.6> 23 0 <4.8> 63 4.8 <0>
25 GND <1> 24 0 <4.8> 64 4.8 <0>
26 GND <3.7> 25 0 <4.8> 65 4.8 <0>
27 4.3 <3.7> 26 0 66 0
28 4.3 GND 27 0 67 NC
29 4.3 <3.7> 28 0 68 NC
30 4.3 <3.7> 29 0 69 0
31 4.3 <3.7> 30 2.5 70 5.1 <4.8>
32 4.3 <3.7> 31 0 71 0
33 4.3 <3.7> 32 0 72 4.8
34 4.3 <3.7> 33 0 73 4.8
35 4.3 <3.7> 34 0 74 0 <4.8>
36 4.3 GND 35 0 75 4.8
37 4.3 <3.7> 36 0 76 4.8 <0>
38 4.3 <3.7> 37 0 77 4.8
39 8.7 <3.7> 38 0 78 0
40 4.3 <3.7> 39 0 79 4.8
41 4.3 40 0 80 0
42 4.3
43 4.3
44 4.3
Transistors:
No. E C B
Q2 8.7 13.7 9.4
Q101 GND 0 0
Q201 GND 0 0
Q361 <8.9> <14.3> <9.4>
Q362-1 GND NC <4.7>
Q362-2 <14.3> <14.2> NC
Q364 <14.3> <14.3> <13.6>
Q365 GND <0> <4.8>
Q501-1 GND NC 0
Q501-2 8.7 0 NC
Q503 0 5.1 0.4 (0)
Note:
no mark : FM
(
) : AM
< > : TAPE PLAYBACK
*
1 (IC1 pin
!ª
)
fmin - fmax
FM 1.3 - 7.5
MW 2 - 5.3
LM 1.3 - 1.5
* 2 (TU1 pin
5
)
fmin - fmax
FM 1.3 - 7.5
MW 2 - 5.3
LM 1.3 - 1.5
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