Service Manual
TOP NEXT
ORDER NO. MD0302054C2
CD Stereo System
•SA-AK210E SA-AK210EB SA-AK210EG
Colour
(S)... Silver Type
TAPE SECTION :
SG-2W MECHANISM SERIES
Specifications |
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AMPLIFIER SECTION |
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RMS Power output |
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10% Total harmonic distortion |
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1kHz, both channels driven |
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(Low channel) |
55 W per channel (6Ω ) |
10kHz, both channels driven |
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(High channel) |
55 W per channel (6Ω ) |
Total Bi-Amp power |
110 W per channel |
Input sensitivity |
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AUX |
250 mV |
Input Impedance |
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AUX |
13.3 kΩ |
FM TUNER SECTION |
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Frequency range |
87.50 - 108.00 MHz (50 kHz steps) |
Sensitivity |
1.8μ V (IHF) |
S/ N 26 dB |
1.5μ V |
Antenna terminal(s) |
75Ω (unbalanced) |
AM TUNER SECTION |
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Frequency range |
522 - 1629 kHz (9 kHz steps) |
Sensitivity |
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S/ N 20 dB (at 999 kHz) |
560μ V/ m |
CASSETTE DECK SECTION |
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Track system |
4 track, 2 channel |
Heads |
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Record/ playback |
Solid permalloy head |
Erasure |
Double gap ferrite head |
Motor |
DC servo motor |
Recording system |
AC bias 100 kHz |
Erasing system |
AC erase 100 kHz |
Tape speed |
4.8 cm/ s |
Overall frequency response (+ 3 dB, -6 dB at DECK OUT) |
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NORMAL (TYPE I) |
35 Hz - 14 kHz |
S/ N |
50 dB (A weighted) |
Wow and flutter |
0.18% (WRMS) |
Fast forward and rewind time |
Approx. 120 seconds with |
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C-60 cassette tape |
CD SECTION |
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Sampling frequency |
44.1 kHz |
Decording |
16 bit linear |
Pickup |
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Beam source/ wavelength |
Semiconductor laser/ 780 nm |
Number of channels |
Stereo |
Frequency response |
20 Hz - 20 kHz (+ 1, -2 dB) |
Wow and flutter |
Below measurable limit |
Digital filter |
8 fs |
D/ A converter |
MASH (1 bit DAC) |
http://servis-manual.com/
SCHEMATIC DIAGRAM -1
OPTICAL |
: +B SIGNAL LINE |
: CD-DA SIGNAL LINE |
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PICKUP CIRCUIT |
CD SERVO CIRCUIT |
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R701 |
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LASER DIODE |
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4.7 |
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1 |
1 |
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C701 |
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6 |
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VCC |
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2 |
2 |
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6.3V33 |
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8 |
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Q701 |
Q701 |
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3 |
3 |
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11 |
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C |
PDE |
B1ADCF000001 |
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29 |
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12 |
C |
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4 |
4 |
LD |
R750 |
LASER POWER DRIVE |
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10 |
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5 |
5 |
LD GND |
4.7 |
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5 |
1 |
GND |
NBOUT 8 |
6 |
6 |
GND |
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4 |
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C |
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C714 |
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7 |
7 |
NB |
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9 |
2 VCC |
GND 7 |
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8 |
8 |
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6.3V100 |
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GND |
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C702 |
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2 |
3 |
BIN |
NAOUT 6 |
9 |
9 |
NA |
C713 |
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3 |
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10 |
10 |
VREF |
0.1 |
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4 |
AIN |
VREF 5 |
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11 |
11 |
LPD |
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12 |
12 |
GND |
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C |
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C |
13 |
13 |
T- |
C750 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
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14 |
14 |
T+ |
PDE |
VCC |
PDA |
PDB |
LPD |
LD |
RF |
RFIN |
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15 |
15 |
0.1 |
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F- |
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IC701 |
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16 |
16 |
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F+ |
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AN8885SBE1 |
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CN701 |
C751 |
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FEOUT |
TEOUT |
SERVO AMP |
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FBAL |
TBAL |
VREF |
FEN |
TEN |
NC |
NC |
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0.1 |
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C703 |
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6.3V100 |
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C704 |
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C706 |
2700P |
0.1 |
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0.1 |
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C707 |
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0.027 |
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10 |
11 |
12 |
13 |
14 |
CSBRT |
CEA |
BDO |
LDON |
GND |
ENV |
NC |
OFTR |
PDOWN |
/RFDET |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
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C747 |
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C710 |
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180P |
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120P |
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C712 |
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R744 |
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R702 |
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R705 |
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0.1 |
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120K |
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10K |
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150K |
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C711 |
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C749 |
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0.12200P
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C742 |
R708 |
R707 |
R706 |
R704 |
0.027 |
22K |
39K |
1K |
1K |
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33 |
C735
0.1
C734
10V220
15 |
16 |
17 |
18 |
19 |
20 |
D3- |
D3+ |
D4- |
D4+ |
NC |
PGND2 |
D2+ |
D2- |
D1+ |
D1- |
NC |
PGND1 |
14 |
13 |
12 |
11 |
10 |
9 |
36 |
C737 |
35 |
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0.1 |
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M |
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M702 |
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SP MOTOR |
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38 |
C736 |
37 |
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0.1 |
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M |
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M701 |
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TRV MOTOR |
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21 |
29 |
22 |
23 |
24 |
25 |
PVCC2 |
GND |
NC |
VCC |
VREF |
IN4 |
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IC703 |
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PVCC1 |
GND |
NC |
IN1 |
NC |
PC2 |
8 |
30 |
7 |
6 |
5 |
4 |
R735
IC703
AN8739SBTE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
26 |
27 |
28 |
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IN3 |
RSTIN |
NC |
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IN2 |
NC |
/RST |
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3 |
2 |
1 |
R736 |
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100 |
100 |
R725 |
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390 |
C752 |
C738 |
C739 |
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1000P |
0.01 |
1500P |
R724 |
C715 |
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R729 |
R728 |
18K |
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2700P |
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3.9K |
3.9K |
R715 |
R727 |
R749 |
1K |
3.9K |
4.7K |
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R723 |
R731 |
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6.8K |
6.8K |
SCHEMATIC DIAGRAM - 2
: +B SIGNAL LINE |
: CD-DA SIGNAL LINE |
: CD SIGNAL LINE |
CD SERVO CIRCUIT
C723
10V220
C724
0.1
X701 R714
RSXZ16M9M01T 0
C722 |
C721 |
10P |
10P |
C717 |
C744 |
C718 |
R712 |
0.1 |
5600P |
0.22 |
220 |
R711 |
R709 |
R741 |
82K |
47K |
47K |
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C716
820P
R742
220K
20 |
18 |
19 |
23 |
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R717 |
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C727 |
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1K |
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C725 |
50V1 |
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R721 |
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1000P |
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22 |
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100 |
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C731 |
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C726 |
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1000P |
21 |
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6.3V220 |
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C730 |
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R718 |
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C728 |
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0.1 |
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1K |
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50V1 |
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C754 |
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C732 |
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C733 |
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470P |
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6.3V220 |
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0.1 |
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19 |
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LCH OUT |
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A.GND |
18 |
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24 |
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26 |
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17 |
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C753 |
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RCH OUT |
17 |
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16 |
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470P |
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+3.3V |
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25 |
27 |
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C743 |
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D.GND |
15 |
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14 |
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0.1 |
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LD SW |
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61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 |
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TX |
13 |
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BYTCK |
/CLDCK FCLK IPFLAG |
FLAG |
CLVS |
CRC DEMPH RESY IOSEL /TEST AVDD1 OUTL AVSS1 |
OUTR |
RSEL |
IOVDD |
PSEL |
MSEL |
SSEL |
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+7.5V |
12 |
TO |
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8 |
7 |
6 |
4 |
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P.GND |
11 |
MAIN |
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CIRCUIT |
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10 |
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60 VDD |
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BCLK |
1 |
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MCLK |
(CN310) ON |
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59 X2 OUT |
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LRCK |
2 |
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MDATA |
9 |
SCHEMATIC |
58 X1 IN |
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SRDATA |
3 |
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DIAGRAM-5 |
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8 |
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MLD |
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57 VSS |
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DVDD1 |
4 |
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7 |
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56 SBCK |
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DVSS1 |
5 |
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12 |
SPEED |
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55 SUBC |
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TX |
6 |
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BLKCK |
6 |
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54 VCOF2 |
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IC702 |
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MCLK |
7 |
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SQCK |
5 |
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53 PCK |
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MDATA |
8 |
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4 |
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52 EFM |
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MN662790RSC |
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MLD |
9 |
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R753 |
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SUBQ |
3 |
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51 AVSS2 |
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SERVO PROCESSOR |
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SENSE 10 |
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11 |
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100 |
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STAT |
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50 AVDD2 |
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DIGITAL SIGNAL PROCESSOR/ |
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/FLOCK 11 |
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10 |
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2 |
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DIGITAL FILTER/ |
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/RST |
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49 VCOF |
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D/A CONVERTER |
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/TLOCK 12 |
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9 |
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RESET |
1 |
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48 PLLF |
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BLKCK 13 |
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47 DSLF |
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SQCK 14 |
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SW |
CN702 |
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46 DRF |
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SUBQ 15 |
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C745 |
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45 IREF |
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DMUTE 16 |
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1000P |
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44 ARF |
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STAT 17 |
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43 WVEL |
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/RST 18 |
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3 |
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42 DSLF2 |
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SMCK 19 |
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41 PLLF2 |
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CSEL 20 |
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5 |
2 |
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LDON |
BDO /RFDET TRCRS OFT VDET RFENV TE FE TBAL FBAL VREF FOD TRD |
KICK |
ECS ECM PC TVD TRV |
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
42 |
S701
RESET SW
TJ702
16 |
15 |
1 |
SCHEMATIC DIAGRAM - 3
: +B SIGNAL LINE |
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: FM SIGNAL LINE |
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: AM SIGNAL LINE |
: FM/AM SIGNAL LINE |
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: FM OSC SIGNAL LINE |
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: AM OSC SIGNAL LINE |
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TUNER/MAIN CIRCUIT
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Q101,Q102 |
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2SC2058SPTA |
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TUNER PACK Z120 (ENV17290G1Y) |
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FM IF AMP |
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C103 |
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R107 |
330 |
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R109 |
330 |
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CF201 |
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0.01 |
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22 |
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HVM27 |
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J0B1075A0086 |
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D |
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HVM27 |
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2SC2620 |
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FM EXT |
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22P |
15P |
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8P |
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4P |
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7 |
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1 |
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3 |
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ANT |
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1 |
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2SK238 |
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10K |
IFT |
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C104 |
R106 |
C105 |
R108 |
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1 |
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1P |
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G |
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75 OHM |
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1000P |
470K |
1000P |
470K |
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2 |
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HVM27 |
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100K |
S |
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7P |
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4P |
22P |
1P |
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1uH |
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2 |
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GND |
2 |
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Q101 |
Q102 |
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3 |
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47uH |
100K |
18P |
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33K |
8P |
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33K |
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33K |
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220P |
1.5M |
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100uF |
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0.022 |
150 |
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R105 |
470 |
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R104 |
10K |
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3 |
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16V |
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6 |
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0.022 |
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HVM27 0.022 |
100 |
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C102 |
16V100 |
R103 |
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CF202 |
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AM LOOP ANT |
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4 |
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C101 |
0.01 |
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100 |
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J0B10750077 |
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0.022 |
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220 |
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1 |
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3 |
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4 |
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330 |
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AM EXT |
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5 |
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D |
8P |
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8P |
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15P |
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ANT JK101 |
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2SK360330 |
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2SC2996 |
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2 |
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2.7K |
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G |
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33P |
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2P |
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8 |
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S |
10K10K |
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1.2K |
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470K |
2SC2996 |
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18P |
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3P |
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100K |
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Q106 |
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47P |
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KRA102MTA |
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TUNER 15V |
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SUPPLY SWITCH |
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Q106 |
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Q110 |
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R139 |
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Q110 |
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2SC3311ARTA |
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C120 |
16V10 |
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R121 |
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22K |
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DC DETECT SWITCH |
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R140 |
22K |
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||||||||
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22K |
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||||||
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C119 |
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3300P |
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R146 100K |
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560P |
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||||
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C117 |
0.01 |
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C131 100P |
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0.01 |
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R142 |
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6.8K |
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|||||||
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C136 1000P |
C114 |
50V3.3 |
C109 1000P |
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R120 47K |
C115 50V4.7 R143 |
22K |
C139 |
|
C138R123 |
0.0168K |
|
C118 |
C137 |
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C142 |
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C144 4700 |
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||||||||
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50V4.7 |
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R141 |
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||||||||||||||||||||||
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50V1 |
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6.8K |
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C116 0.033 |
R102 |
4.7K |
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C141 |
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50V1 |
R145 |
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||||||
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100K |
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|||||
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IC101 |
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24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
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15 |
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14 |
13 |
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C143 |
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|||||||
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OSC OUT |
AM MIX OUT OSC |
|
AM RF IN |
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LCH |
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|||||
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LA1833NMNTLM |
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4700 |
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FM/AM IF AMP |
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REG AFC |
GND AGC |
AMOUT |
ST DETOUT |
FM DET PILOTIN |
VCC MPXIN |
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PILOTOUT |
IC101RCH |
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DET/AM OSC MIX/ |
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FM MPX |
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R119 |
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R118 |
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12K |
3.3K |
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FM IF IN |
AM IF IN |
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STRQ |
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FM/AM |
MONO |
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3 |
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SD |
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AM ANT COIL |
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1 |
2 |
3 |
4 |
5 |
6 |
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7 |
8 |
9 |
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10 |
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11 |
12 |
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2 |
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4 |
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5 |
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C147 |
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C106 |
0.01 |
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1 |
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6 |
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C127 |
16V22 |
C126 16V1 |
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1000P |
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8 |
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AM OSC COIL |
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C148 |
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C122 50V1 |
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50V0.47 |
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Z101 |
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9 |
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7 |
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3 |
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R124 |
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C121 |
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0.01 |
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33 |
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RLA2Z007-T |
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RLFDFT22DD |
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R110 |
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2 |
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4 |
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R125 470 |
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R122 2.7K |
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C123 50V1 |
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C108 |
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1K |
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R112 100K |
8P |
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1 |
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X102 |
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R126 1K |
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R127 |
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C107 0.047 |
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470 |
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R144 |
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120 |
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Z102 |
5 |
6 |
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R131 |
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R111 |
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G2BAE0000003 |
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120 |
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390 |
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D101 |
B0BC5R00009 |
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C132 100P |
C130 6.3V100 |
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C125 |
16V22 |
R113 10K |
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R128 |
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C129 6.3V100 |
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C149 0.1 |
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R117 |
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82 |
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68K |
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R129 |
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R114 |
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C111 |
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27K |
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50V4.7 |
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5.6K |
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R151 |
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R115 |
560 |
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82 |
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C124 |
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R132 |
10K |
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R133 |
1K |
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C113 |
1000P |
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100P |
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C133 |
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C112 |
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R116 |
1K |
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27P |
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0.01 |
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C110 |
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20 |
19 |
18 |
17 |
16 |
15 |
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14 |
13 |
12 |
11 |
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AOUT |
AIN |
PD |
VDD |
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FMIN |
AMIN |
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IC102 |
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R152 |
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LC72131MDTRM |
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DET_OUT |
TO |
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||||||||||||
|
0.01 |
0 |
|
X103 |
RSXC7M20S05T |
|
|
XINXOUT |
CE VSS |
PLL FREQUENCY SYNTHESIZER |
STRQMONO |
FM IFIN |
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15V |
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||||||||||
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MAIN |
|||||||||||
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SDC |
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DO/ST |
|||||||||||
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DI |
CL |
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DO |
AM |
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LW |
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CIRCUIT |
||||||||||||
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SD |
(2A) ON |
||||||||||||||||
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C134 |
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1 |
2 |
3 |
4 |
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5 |
6 |
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7 |
8 |
9 |
10 |
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+7.5V |
SCHEMATIC |
||||||||||||||
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27P |
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|||||||||||||||
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TGND |
DIAGRAM-6 |
||
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1A |
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R138 |
1K |
1K |
1K |
|
470 |
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3.3K |
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RCH |
TO |
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R130 |
R137 |
R136 |
R135 |
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R134 |
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CE |
MAIN |
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LCH |
CIRCUIT |
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10K |
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PLLDA |
(2B) ON |
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PLLCLK |
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PLLDA |
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DO/ST |
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DO/ST |
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DO/ST |
SCHEMATIC |
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CE |
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SD |
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PLLCLK |
DIAGRAM-6 |
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1B |
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SCHEMATIC DIAGRAM - 4
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: +B SIGNAL LINE |
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: AUX SIGNAL LINE |
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: MAIN SIGNAL LINE |
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: -B SIGNAL LINE |
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: CD SIGNAL LINE |
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: PLAYBACK SIGNAL LINE |
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TO |
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: RECORD SIGNAL LINE |
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PANEL CIRCUIT |
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(CP601) ON |
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MAIN CIRCUIT |
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SCHEMATIC DIAGRAM-9 |
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CN303 |
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17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
CR02 |
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PL GND |
MOTOR |
BP1 DECK1 H |
DMT |
RDS DET |
+9V |
|
MIC |
MIC GND SPEANA |
REC H |
|
HPR |
HPGND |
HPL |
MUTE A |
MUTE H |
/CD |
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2 |
MOTOR |
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3 |
BP1 |
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4 |
DECK1_H |
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TO |
5 |
DMT |
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DET OUT |
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MUTE H |
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MOGND |
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C253 1000P |
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MUTE A |
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|||||
DECK |
6 |
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SPEA |
REC H |
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CIRCUIT |
7 |
MOT10V |
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MOT10V |
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+9V |
MIC |
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/CD |
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|||||||
(CN1001) ON |
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REC_H |
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REC_H |
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||||||||||
SCHEMATIC |
8 |
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DIAGRAM-11 |
9 |
+15V |
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+15V |
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R352 |
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R353 |
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C319 16V33 |
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RECR |
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REC_R |
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Q411 |
C451 |
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220 |
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C452 |
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|||||||
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10 |
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220 |
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R474 |
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11 |
RECL |
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REC_L |
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0.033 |
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0.033 |
|
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1.5K |
LHPF |
|||
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16V33 |
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12 |
AGND |
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C318 |
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R472 220k |
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C251 |
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C252 |
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R274 |
RHPF |
||||
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PBR |
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PBR |
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R473 |
|
Q211 |
|
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0.033 |
|
0.033 |
|
1.5K |
|||||||||||
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13 |
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|||||||||||
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220 |
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R272 |
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Q211 |
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PBL |
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PBL |
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220K |
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14 |
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R471 |
12K |
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KTC3875GRTA |
||||||||
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R271 |
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R273 |
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RHP FILTER |
|
||||||||
CN304 |
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+9.0V |
|
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12K |
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220K |
|
|
(HEADPHONE) |
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||||||
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Q411 |
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+9.0V |
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KTC3875GRTA |
|||||
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Q404 |
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R437 |
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R436 |
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LHP FILTER |
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|||||
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R201 |
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(HEADPHONE) |
|
||||||||
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10K |
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AUXR |
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18K |
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18K |
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RCH |
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R454 |
|||
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C201 |
|
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C202 100P |
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R202 3.3K |
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-9.0V |
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|||||
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L301 |
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R439 |
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C430 |
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220 |
|
||||||||
AUX |
|
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|
|
680 J0JBC0000019 |
|
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-9.0V |
|
|
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4.7K |
|
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|
8200 |
|
|
Q204, Q404 |
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|||||||||||
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C401 |
680 |
|
C402 100P |
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R402 3.3K |
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R438 |
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KTC3875GRTA |
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||||||||||
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AUXL |
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LPF FREQ AMP |
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|||||||||||||
LCH |
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220K |
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||||||||||||||
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C435 |
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SWITCH |
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||||||||
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R401 |
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R443 |
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|||||||
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50V0.68 |
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C431 |
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||||
JK300 |
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10K |
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LO_L |
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3.3K |
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|||||
C331 |
0.22 |
C332 |
0.22 |
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1500P |
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|||||||
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|||||||
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||||
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Q204 |
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R237 |
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R236 |
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|||
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18K |
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18K |
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R239 |
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C230 |
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|||
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4.7K |
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|
8200 |
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|||
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R238 |
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||
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R243 |
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C235 |
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220K |
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LO_R |
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3.3K |
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50V0.68 |
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C231 |
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1500P |
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R340 |
10K |
R341 |
47K |
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R342 |
47K |
R343 |
10K |
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Q405 |
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C433 |
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C432 |
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VREF+ |
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CHG_CW |
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CHG_CW |
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8200P |
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8200P |
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14 |
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R442 |
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R440 |
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CHG_HALF |
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CHG_HALF |
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13 |
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5.6K |
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4.7K |
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12 |
8V |
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CD8V |
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R441 |
12K |
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Q205, Q405 |
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11 |
CHG_CCW |
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CHG_CCW |
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R444 |
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C434 |
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KTC3875GRTA |
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|||||||||
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CLAMP |
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R344 |
22K |
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CHG_AD1 |
HI_L |
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1.8K |
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50V1 |
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10 |
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HPF FREQ AMP |
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R345 |
12K |
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CHG_AD2 |
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SWITCH |
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9 |
OPEN |
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TO |
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SW1 |
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SW1 |
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CD LOADING |
8 |
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Q205 |
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C233 |
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C232 |
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CIRCUIT |
7 |
PGND |
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8200P |
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8200P |
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(CN1) ON |
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SW2 |
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C326 |
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SW2 |
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R242 |
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R240 |
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SCHEMATIC |
6 |
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0.47 |
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4.7K |
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DIAGRAM-13 |
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DGND |
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5.6K |
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5 |
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220 |
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SW5V |
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4 |
5V |
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R348 |
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C234 |
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R241 |
12K |
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R244 |
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3 |
POSITION |
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R346 |
22K |
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HI_R |
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1.8K |
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50V1 |
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2 |
BOTTOMSW |
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R347 |
12K |
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Q323 |
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R312 |
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R311 |
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D309 |
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||||||||||
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PLUNGER |
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Q308 |
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|
1 |
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12 |
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15 |
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RL1N4003S-P |
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Q308 |
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||||||||||
CN309 |
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CHG_PLGR |
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C316 0.01 |
R313 10K |
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KTA12710YTA |
|||||
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CURRENT CONTROL |
||||||
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R349 |
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SWITCH |
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1K |
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D307 |
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R315 |
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Q309 |
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2.2K |
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||||||
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Q309 |
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R314 |
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KTC3199GRTA |
||||
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D324 |
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R350 10K |
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D307-D308 |
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100 |
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VOLTAGE STABILISER |
||||||||
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MA2J72800L |
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Q310 |
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CD3.3V |
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|||||||||
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RL1N4003S-P |
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MOT10V |
D308 |
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|||||||||||||
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Q310 |
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|||
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Q324 |
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C315 |
10V33 |
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||
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Q323 |
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R317 |
330 |
R316 3.9K |
|
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KRA110MTA |
|||||||||
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CD ON/OFF |
||||||||||
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Q324 |
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KRC102STA |
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||||||||||||
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SUPPLY SWITCH |
||||||||||||||
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|||||||||
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KTA12710YTA |
|
|
|
PLUNGER MOTOR |
|
CD3.3V |
|
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SW5V |
|
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CD8V |
|
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|||||
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CD MOTOR SUPPLY SWITCH |
|
SUPPLY CONTROL SWITCH |
|
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/CD |
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||||||||||
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