Sony XR-C8220 Service Manual ▷ View online
XR-C8220
6-3.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
Q903
LSW900, 901, 903,
LSW904, 906 – 909,
LSW912 – 918
LED900 – 907,
LSW902, 905
05
35
RE-IN1
KEYACK
AMBER
76
BEEP
15
PACK-IND
59
LCDANG
41
2
LCD-DATA
18
LCD-CLK
17
21
20
LCD-CE
OSC-OUT
OSC-IN
19
KEYIN1
RE-IN0
36 37
KEYIN0
X1
X0
X1A
X0A
RC-IN0
RC-IN1
46
47
48 72
93
92
73
LCD SO
13
LCD CKO
14 16
LCD-INH
14
LCD CE
32
74
KEY ACTIVE
SWITCH
Q510, 511
BUZZER
DRIVE
Q601
OSC
D506
D510
Q902
VLC0 – VLC5
GREEN
1
LED DRIVE
Q900
LED DRIVE
Q501
CONTRAST
SWITCHING
Q508, 509
AD-ON
80
NOSESW
LSW900 – 909,
LSW912 – 918,
LSW912 – 918,
S900, SW801
SW500
(NOSE DETECT)
ROTARY
ENCODER
RE900
BACKUP +5V
BZ600
(BUZZER)
P-ON +10V
LCD +10V
LCD +10V
LED DRIVE
Q901
11 – 6
X600
3.68MHz
X601
32.768kHz
R952
SYSTEM CONTROLLER
IC600 (3/4)
LIQUID CRYSTAL DISPLAY DRIVER
IC900
26 – 90
SEG101 – SEG165
100 – 93
COM100 – COM107
LIQUID CRYSTAL DISPLAY
LCD900
VOLUME/BASS/TREBLE/
BALANCE/FADER CONTROL
RE900
LED800, 802
LED800
(TAPE WINDOW)
LED802
6
LCD INH
J500
REMOTE IN
– 23 –
– 24 –
XR-C8220
– 25 –
– 26 –
6-4.
BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
BACKUP +5V
BACKUP +5V
RESET SIGNAL
GENERATOR
IC500
REMOTE CONTROL
RECEIVER
IC901
SIRCS BUFFER
Q602
RAM RESET
IC501
BATTERY DETECT
Q600
ACCESSORY CHECK
Q705
6
8
4
CLK
ANT+B
FM+B
REGULATOR
IC502
COM8V
AM+B
MODE1
MODE2
STB
CLK IN
DATA OUT
DATA
2
RST
RESET
SWITCH
BUS ON
SWITCH
13
11
1
BUS ON
OUT
OUT
BUS
ON IN
12
9
DATA IN
SONY BUS INTERFACE
IC602
SYSTEM CONTROLLER
IC600 (4/4)
BATT
BATT B+
BUS ON
DATA
CLK
RESET
7
6
5
4
2
SIRCS
3
16
BATT
ANT REM
AMP REM
TH700
6
5
CN700 (2/2)
(POWER CONNECTOR)
ILLUMINATION
LINE DETECT
Q512
DIMMER
CONTROL SWITCH
Q552
REGULATOR
CONTROL SWITCH
Q505
OSC OFF
SWITCH
Q557
F1
COM +8V
(AUDIO CIRCUIT B+)
05
RST
3
BATT
BATTERY
SWITCH
10
BU IN
77
12
10
19 UNICKO
17
UNISI
18 UNISO
86
HSTX
11
24
SIRCS
90
D604
D523
TH600
D606
D601
D713
D507
EL900
(ECECTRO
LUMINESCENT
LIGHT)
T550
INVERTER
TRANSFORMER
CN500
(MAIN BODY SIDE)
CN900
(FRONT PANEL SIDE)
AM B+
(AM CIRCUIT B+)
FM B+
(FM CIRCUIT B+)
VCC
7
7
ACC
14
ILL
+9V
REGULATOR
Q11
+9V
(FOR VT)
+5V
REGULATOR
Q10
+6V
REGULATOR
IC503
+10V
REGULATOR
Q504
OSC
Q556
TUNER ON +5V
(TUNER CIRCUIT B+)
B+ SWITCH
Q513
B+ SWITCH
Q703, 704
B+ SWITCH
Q550, 551
REGULATOR
IC550, Q553
CURRENT
CONTROL SWITCH
Q554, 555
D532 – 534
BACKUP +5V
P-ON +10V
Q503
POWER ON/OFF
SWITCHING
D524
D525
REGULATOR
CONTROL SWITCH
Q507
+10V
REGULATOR
Q506
LCD +10V
CSV (IC650) B+
2
3
4
9
10
11
8
POWSEL
FM-ON
TU-ON
DIMMER 30
POWON 120
29
LEDON
ILL-ON
118
6
7
RESET
SYSRST
RAMBU
BU-IN
BUS-ON
B (OFF)
A (ON)
56
55
BATT B+
POWER AMP
(IC700) B+
SW800
RESET
5
10
D553
D719
DOORSW
78
81
ACC IN
ILL IN
(FOR SONY BUS)
CN600
BUS CONTROL IN
S600
POWER SELECT
– 27 –
– 28 –
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM
〈〈
〉〉
: TAPE PLAYBACK
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM
L
: BUS AUDIO IN
E
: TAPE PLAYBACK
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC10
@º
(XOUT)
2
IC600
&¢
(X0A)
3
IC600
(£
(X1)
4
IC650
2
(XT)
2
IC900
@¡
(OSC-OUT)
– INVERTER Board –
1
Q556 (EMITTER)
3.8 Vp-p
139 ns
3.6 Vp-p
30.6
µ
s
3.8 Vp-p
236 ns
5.8 Vp-p
272 ns
– KEY Board –
1
IC900
@º
(OSC-IN)
2 Vp-p
5.5
µ
s
3.3
µ
s
6.8 Vp-p
10 Vp-p
1.1 ns
XR-C8220
– 29 –
– 30 –
6-6.
PRINTED WIRING BOARD – MAIN Board (Component Side) –
D10
F-13
D200
H-4
D201
F-3
D202
F-3
D350
F-6
D351
F-6
D506
J-12
D508
B-9
D509
B-10
D510
C-9
D513
J-13
D514
K-13
D517
K-10
D519
K-11
D523
I-7
D524
J-4
D525
K-11
D527
K-6
D528
K-6
D530
F-2
D601
E-2
D604
D-3
D605
D-2
D606
D-2
D701
C-7
D702
B-7
D703
B-7
D704
B-6
D705
B-7
D712
D-4
D715
B-5
D717
D-7
D718
C-3
D719
C-3
IC10
F-11
IC50
J-11
IC201
G-3
IC250
H-11
IC301
G-8
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
IC302
F-9
IC310
D-12
IC320
G-7
IC350
E-7
IC383
D-8
IC410
D-10
IC500
D-5
IC600
H-5
IC602
D-2
IC650
E-4
Q11
E-9
Q14
G-13
Q15
G-12
Q17
E-12
Q50
I-12
Q51
J-12
Q60
I-12
Q80
I-12
Q201
F-3
Q202
G-3
Q250
H-10
Q330
B-12
Q340
B-11
Q361
B-10
Q430
B-11
Q440
B-12
Q461
B-10
Q507
K-6
Q508
K-10
Q509
K-9
Q510
J-11
Q511
J-12
Q600
E-2
Q602
D-3
Q603
E-5
Q700
B-9
Q702
D-7
Q703
D-4
Q704
D-5
1-673-464-
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