Sony XR-C8220 Service Manual ▷ View online
– 17 –
AM Auto Scan/Stop Level Adjustment
Setting:
[SOURCE]
n
[MODE]
buttons
: AM
FREQUENCY SELECT switch (E model): AM 10 k
Procedure:
1. Set to the test mode. (See page 14)
2. Push the
1. Set to the test mode. (See page 14)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to AM.
Display
4. Push the preset
[3]
button.
Display
5. Adjust with the volume RV1 on TUX10 so that the “AM” in-
dication turns to “AM0” indication on the display window. But,
in case of already indicated “AM0”, turn the RV1 so that put
out light “0” indication and adjustment.
in case of already indicated “AM0”, turn the RV1 so that put
out light “0” indication and adjustment.
Display
Adjustment Location: See page 18.
AM RF signal
generator
Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
Output level
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy antenna
30
Ω
15 pF
65 pF
antenna jack
SHUF
SHUF
SHUF
– 18 –
Adjustment Location:
– SET UPPER VIEW –
– SET BOTTOM VIEW –
TUX10
Tape Speed Adjustment
RV1 AM Auto Scan/Stop Level Adjustment
RV3 FM Stereo Separation Adjustment (WIDE)
RV4 FM Stereo Separation Adjustment (NARROW)
RV2 FM Auto Scan/Stop Level Adjustment
RV240
(R-CH)
RV230
(L-CH)
(L-CH)
Dolby Level
Adjustment
TP (DOLBY-L)
TP (DOLBY-R)
TP (DOLBY-R)
Dolby Level
Adjustment
Adjustment
XR-C8220
05
TAPE EQUALIZER AMP,
DOLBY NR AMP, AMS
IC250
34
32
R-CH
FWD
IN (L)
IN (L)
FWD
L-CH
HP901
(PLAYBACK)
FWD
R-CH
REV
L-CH
REV
R-CH
REV
IN (L)
IN (L)
R-CH
R-CH
R-CH
R-CH
R-CH
D200
(METAL DETECT)
R-CH
EQ AMP
29
27
MUTE
DOLBY
NR AMP
EQ
OUT
TAPE
IN (L)
IN (L)
AMS
DET
+
113
102
116
114
N-ROUT
MTLIN
19
FWD/REV
18
MTL/NORMAL
17
16
20
MUTE/TAPE
Q250
MUTE SWITCH
DOLBY
NR.ON
AMSON
103
AMSIN
AMS/PLAY
24
LCH
OUT
14
AMS
OUT
RV230
DOLBY LEVEL (L)
• SIGNAL PATH
: AM
: FM
: TAPE PLAY
SYSTEM CONTROLLER
IC600 (1/4)
REGULATOR
CONTROL SWITCH
Q202
CAPSTAN/REEL
MOTOR DRIVE
Q204
LM-EJ
TAPEON
LM-LOD
CM-ON
VCC
REEL SENSOR B+
BATT B+
BATT B+
Q201
IN1
IN2
OUT1
OUT2
LOADING/TAPE OPERATION
MOTOR DRIVE
IC201
111
M
M
M901
(CAPSTAN/REEL)
9
7
MOTOR
DRIVE
2
4
3
110 109
REGULATOR
Q203
112
LOADING/TAPE
OPERATION
TAPE OPERATION
SWITCH
BUFFER
TAKE-UP
REEL
SENSOR
SUPPLY
REEL
SENSOR
REEL SENSOR BOARD
(E Model)
REEL
104
105 – 108
POS0 – POS3
TAPE
DETECT
EJECT/FF/REW/
REV/FWD MODE DETECT
(FM/AM ANTENNA)
FM-ANT
AM-ANT
FM +B
FM B+
AM +B
AM B+
+B (FM/AM)
D10
FM/AM TUNER UNIT
TUX10
S-METER
LO/DX
VCO (FM/AM)
FM-IF-COUNT
AM-IF-COUNT
(SEEK)
VT (FM/AM)
SD
RECEIVE/SEEK
FM L-OUT
FM R-OUT
AM-DET OUT
R-CH
R-CH
D50
MUTING
CONTROL SWITCH
Q51
A
B
FM/AM SIGNAL
METER BUFFER
Q13
WIDE
TUNMUTE
DSTSEL2
VSM
SD-IN
ST-MONO
FM/AM PLL
IC10
LO/DX
WIDE
VSM
SEEK
SD
ST/MONO
IF IN
FM OSC
AM OSC
PD
XOUT
XIN
X10
7.2MHz
D.IN
D.OUT
CLK
CE
DATA-IN
DATA-OUT
CLK
CE
DATA-IN
DATA-OUT
CLK
CE
PLLSO
PLLSI
PLLCKO
PLLCE
WIDE/NARROW
SEEK OUT
WIDE/NARROW
SWITCHING
Q14
(Page 21)
(Page 21)
ST- IND
FM-L
AM
C
(Page 21)
TAPE-L
MUTING
Q50
MUTING
Q60
BAND-PASS
FILTER
IC50
LOW-PASS
FILTER
Q17
WIDE/NARROW
SWITCHING
Q15
51
5 6 4 2
20
1
9
13
16
15
18
7
4
1
2
21
11
6
5
24
19
13
20
8
10
9
22
12
16
18
5
3
4
20
1
53
26
27
25
28
SEEKOUT
WIDE
VSM
SD
ST/MONO
SEEK
AM 9k/FM 50k
AM 10k/FM 200k
S601
FREQUENCY SELECT
– 19 –
– 20 –
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – TUNER/TAPE Section –
XR-C8220
– 21 –
– 22 –
6-2.
BLOCK DIAGRAM – MAIN Section –
05
INAO1
VOUT
TCO1
VR
IN1
IN1
TIN1
FD
IN1
IN1
FNTO1
REO1
(Page 20)
(Page 20)
AM
FM-L
INPUT SELECT,
ELECTRICAL VOLUME
IC301
ELECTRICAL VOLUME
(FOR SUBWOOFER)
IC350
LINE DRIVER
IC310
INPUT
SELECTOR
VOLUME
CONTROL
CIRCUIT
VOLUME
CONTROL
CIRCUIT
TONE
CONTROL
CIRCUIT
FADER
CONTROL
CIRCUIT
REFERENCE VOLTAGE
GENERATOR (FOR BIAS)
IC302
SUB CUT
SWITCH
Q360, 362
LOUDNESS
CONTROL
CIRCUIT
SHIFT
REGISTER &
LATCH
VCT
BUFFER
CN780 (1/2)
BUS
AUDIO IN
L
R
R-CH
CN781 (1/2)
FRONT
LINE OUT
CN780 (2/2)
REAR
LINE OUT
L
R
L
R
R-CH
R-CH
COM +8V
R-CH
R-CH
R-CH
R-CH
D351
D350
CE
DATA
CLK
VOLCE
DATA
CLK
VCT
GAIN
B
(Page 20)
TAPE-L
C
22
16 21
17
40
42
33
32
31
OUT1
VR
IN1
IN1
INP1
16
15
INAO1
BUFFER
17
20
30
26
25
23
24
OUT1
OUT2
IN1
IN2
12
13
7
2
41
39
A
SHIFT
REGISTER &
LATCH
ZC
DET
CE
DATA
CLK
7
8 9
36 – 38
• SIGNAL PATH
: AM
: FM
: TAPE PLAY
: BUS AUDIO IN
AM-IN-L
AUX-IN-L
FM-IN-L
TAPE-IN-L
CN781 (2/2)
SUB OUT
L
R
R-CH
R-CH
R-CH
SUBCE
DATA
CLK
SUBCE
VOLCE
DATA
CLK
+
MUTING
Q340
MUTING
Q430
MUTING
Q330
MUTING
Q440
MUTING
Q361
MUTING
Q461
22 MUTE
4
11
12
IN1
15 IN3
IN2
14 IN4
POWER AMP
IC700
5
3
21
23
OUT2+
OUT2–
OUT4+
OUT4–
7
OUT1+
OUT1–
17
19
OUT3+
OUT3–
CN700 (1/2)
(POWER CONNECTOR)
1
9
FRONT L (+)
FRONT L (–)
FRONT R (+)
FRONT R (–)
REAR L (+)
REAR L (–)
REAR R (+)
REAR R (–)
4
2
12
10
3
11
TEL-ATT
13
TEST MODE
15
9
POWER AMP
MUTE SWITCH
Q702
LEVEL SHIFT
Q603
MUTING
CONTROL SWITCH
Q700, 701
D717
66
VOLSO/SUBSO
VOLCKO/SUBCKO
67
62
SUB-SW0
SUB-SW1
61
68
SUBCE
VOLCE
MUTE
64
65
SD
CSV-SO
21
15
DOLBC 115
58
TEL-ATT 79
SYSTEM CONTROLLER
IC600 (2/4)
CSV
IC650
SI
CSV-CKO
22
14
CSV-CE
23
AOUT
R-CH
23
8
ST
NAR
CSV-NAR
117
22
RESET
9
17
D715
TESTIN
CSV-RST
BUFFER
IC320
BUFFER
IC383
XT
X650
4.19MHz
2
3
XT
ST-BY
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