Sony XR-C8220 User manual

MICROFILM
SERVICE MANUAL
FM/AM CASSETTE CAR STEREO
US Model
E Model
SPECIFICATIONS
XR-C8220
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol aare trade-
marks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism XR-C9100
Tape Transport Mechanism Type MG-25D-136
For RM-X4S (Remote Commander),
please refer to RM-X4S Service Manual
(9-925-698-∏) previously issued.

XR-C8220
– 33 – – 34 –
6-8. SCHEMATIC DIAGRAM – MAIN Section (1/4) – • See page 28 forWaveforms. •See page 47 for IC Block Diagrams.
(Page 35)
(Page 39)
(Page 38)

XR-C8220
– 35 – – 36 –
6-9. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 48 for IC Block Diagrams.
(Page 40)
(Page
38)
(Page
34)

XR-C8220
– 37 – – 38 –
6-10. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 28 for Waveforms. •See page 47 for IC Block Diagrams.
(Page
35)
(Page
39)
(Page 34)

XR-C8220
– 39 – – 40 –
6-11. SCHEMATIC DIAGRAM – MAIN Section (4/4) – • See page 49 for IC Block Diagrams.
(Page
34)
(Page
38)
(Page 36)
(Page 46)
(Page 46)
(Page 46)
(Page 46)

XR-C8220
– 43 – – 44 –
6-13. SCHEMATIC DIAGRAM – PANEL Section – • See page 28 forWaveforms.
(Page 46)

XR-C8220
(Page 32)
6-14. PRINTED WIRING BOARD – SUB/INVERTER Section –
– 45 – – 46 –
6-15. SCHEMATIC DIAGRAM – SUB/INVERTER Section – • See page 28 forWaveform.
(Page 40)
(Page 40)
(Page 40)
(Page 40)
(Page 43)
(Page 31)
(Page 32)
(Page 32) (Page 42)

– 47 –
• IC Block Diagrams
– MAIN Board –
IC10 BU2624FV-E2
PHASE
DET
PRESCALER
MAIN
COUNT
IF COUNT
CTL
20BIT COUNT
SHIFT REGISTER LATCH
REFERENCE
DIVIDER
I/O
CTL
1
2
4
5
6
7
9
10
20
18
17
16
15
14
13
12
11
19
XIN
CE
CK
DA
CD
P0
P1
P3
XOUT
VSS
PD
VDD
FMIN
AMIN
P2
IFIN
SD
P4
IC201 LB1638M
1
2
3
4
5 6
7
8
9
10
GND
IN1
VCC
IN2
GND N.C.
OUT2
VS
OUT1
N.C.
CONTROL LOGIC
IC250 CXA2510AQ-T4
+
–
+
–+–
+
–
+–
12345 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
2122232627282930
31
32
33
34
37
38
39
40
2425
PBFB2
PBRIN2
PBREF2
PBFIN2
35
36
PBGND
VCT
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ2
PBOUT2
VCC
TAPEIN2
AUXIN2
MSLPF
LINEOUT2
TCH2
NC
PLAY
FF
MSTC
DGND
MSOUT
NC
NRSW
INSW
TAPESW
MSMODE
DRSW
MSSW NC TCH1 LINEOUT1 DIREF AUXIN1 TAPEIN1 PBEQ1 PBOUT1 GND
F2
120µ/
70µ
X1
X1
VCT
+
F1
120µ/
70µNR
OFF/B
F3
LPF
VCC
DETECT
MS ON/
OFF
NR
MODE
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
NR
MS
MODE
OFF/B
T2
T1

– 48 –
IC301 CXA1946BQ-T6
37
GAIN12 38
GAIN11 39
IN14 40
IN13 41
IN12 42
IN11
INPUT SW
36
GAIN134
LOUD VOLUME
8dB STEP VOLUME 1dB STEP TONE FADER
35
LDLC1
34
LDHC1
33
INAO1
32
VRIN1
31
VOUT1
30
TIN1
29
TCLC1
28
TCLC11
27
TCLC12
26
TCO1
25
FDIN1
24 FNTO1
23 REO1
VCTBUFF
VCTBUFF
VCTBUFF
LATCH
CONTROL
LATCH
1
GAIN234
LOUD VOLUME
8dB STEP VOLUME 1dB STEP TONE FADER
2
LDLC2
3
LDHC2
4
INAO2
5
VRIN2
6
VOUT2
7
TIN2
8
TCLC2
9
TCLC21
10
TCLC22
11
TCO2
12
FDIN2
14 REO2
13 FNTO2
VCTBUFF
VCTBUFF
VCTBUFF
SHIFT
REGISTER
ZCDET
43
IN21 44
IN22 45
IN23 46
IN24 47
GAIN21 48
GAIN22
INPUT SW
18 VCC
17 VCT
16 DATA
15 TIMER
22 CE
21 CLK
20 DGND
19 GND
45k
45k
IC310, 410 TDA8574 (T) IC350 CXA1846BN-T4
REFERENCE
REFERENCE
VCCL
VCCL
VCCL
INL
SVRL
INML
INMR
SVRR
INR
VCCR
VCCR
VCCR
BUFFER
BUFFER
BUFFER
BUFFER
LIFT
AMP
SIGNAL
AMP
LIFT
AMP
SIGNAL
AMP
CL+
CL–
LGND
OUTL
OUTR
RGND
CR–
CR+
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
1dB STEP
VOLUME
8dB STEP
VOLUME
1dB STEP
VOLUME
8dB STEP
VOLUME
VCT
BUFFER
LATCH
SHIFT
REGISTER
LATCH
CONTROL ZC DET
+
–
+
–
INP 1
INN 1
VCT 1
INAO 1
VRIN 1
OUT 1
N.C.
GND
VCT
VCC
INP 2
INN 2
VCT 2
INAO 2
VRIN 2
OUT 2
CE
DATA
CLK
INIT

– 49 –
IC502 BA3918-V3 IC602 BA8270F-E2
+
–
+
–
+
–
+
–
OVER VOLTAGE
PROTECT
REGULATOR
12 3 45 6 7 8 9 10 1211
NC
MODE2 MODE1
STB
VDD
AMP
VCC ANT
COM
AM
FM
GND
1
2
3
4
5
6
7 8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
IC650 MSM6656A-687GS-KR1 (US model)
IC650 MSM6656A-689GS-KR1 (E model)
12
11
10
9
3
4
8
7
6
5
2
1
13
14
15
16
20
19
18
17
21
22
23
24
TIMMING
CONTROLLER BEEP TONE
GENARATOR
MELODY
GENARATOR
17 BIT
ADDRESS
COUNTER
17 BIT
MULTIPLEXER
I/O
INTERFACE
ADDRESS
&
COMMAND
CONTROLLER
1M BIT ROM
EDITING ROM &
ADDRESS ROM
CONTAINS 22KBIT
DATA
CONTROLLER ADPCM
SYNTHESIZER
PCM
SYNTHSIZER
12 BIT
DAC
LPF
OSC
8
12
7CH
RESET
NC
NC
NC
NAR
AOUT
GND
BUSY
16/SD
15/SI
14
VDD
XT
XT
NC
CMD
NC
NC
ST
10
11
12/PoRT0
13/PoRT1