Sony XR-CA370 / XR-CA370X (serv.man2) Service Manual ▷ View online
XR-CA370/CA370X
17
17
5-4.
SCHEMATIC DIAGRAM – MAIN Board (2/2) –
•
See page 20 for IC Block Diagram.
D503
D502
D501
D500
D507
D506
D505
D504
R731
R730
R732
C731
Q726
R728
R852
D700
C701
C700
R721
R720
Q725
R722
Q732
Q731
C733
D653
C507
C508
C505
R502
R501
R500
C423
C427
R413
R410
C424
C420
R412
C426
C422
R411
C425
R504
C523
C430
C431
R853
R503
Q400
Q401
Q402
Q403
R450
D452
C451
R452
C453
Q451
Q450
R414
C428
C429
R416
R417
R415
C416
C418
C419
R402
R403
C417
R404
R405
R406
R407
R408
R409
R419
R420
C421
R421
C412
C413
C414
C415
C521
C520
R400
C452
C410
R418
C411
R422
R423
C409
C400
C401
C402
C403
C404
C405
R653
C650
R651
C601
R401
R656
D651
R663
C7
C81
IC2
R652
R650
R81
R740
C740
D741
C741
C742
C710
Q711
R713
Q741
Q740
Q710
D807
R710
R815
D650
R814
D805
R811
R804
R800
R801
R802
C800
CN800
D800
R664
CN400
R725
IC800
L700
TH701
TH700
TH800
D803
D802
CN700
IC500
C506
C500
C502
IC400
C801
Q650
Q651
R655
R711
R712
Q800
Q730
R657
D724
D722
D721
D723
R654
Q722
Q724
F901
C501
C504
11ES2
11ES2
11ES2
11ES2
11ES2
11ES2
11ES2
11ES2
2.2k
10k
470
0.047
PDTC114EK
10k
0
IN5404TU
0.22
3300
16V
560
1/2W
10k
PDTC114EK
0
PDTC114EK
2PB709A
470p
MTZJ6.2B
0.1
0.1
10
16V
10k
22
10k
0.47
0.47
100
100
0.47
0.47
100
0.47
0.47
100
0.47
47k
470p
100p
100p
0
1k
DTC314TK
DTC314TK
DTC314TK
DTC314TK
47
MTZJ7.5C
47
16V
4.7k
2.2
PDTC144EK
PDTA114EK
1k
100p
100p
10k
10k
1k
4.7
50V
50V
4.7
50V
50V
4.7
50V
50V
100
100
4.7
50V
50V
100
100
47k
47k
47k
47k
100
100
0.47
100
10p
10p
10p
10p
470p
470p
10
1
47
16V
100
0.01
0
0
10
16V
0.47
0.47
0.47
0.47
0.47
0.47
4.7k
1
50V
47k
0.1
39k
27k
1SS133
100k
0.047F
5.5V
0.1
PST3443UL
47k
4.7k
100k
22k
10
16V
HZS681L
0.01
100
10V
10V
0.1
PDTC114EK
10k
2PD601A
2SA1428
2SA1428
11ES2
4.7
1/2W
0
MTZJ188
220k
MTZJ188
1k
10
10k
100
100
330
16V
16V
8P
MTZJ6.8B
1k
560
1/2W
MM1175XFF
MTZJ18B
MTZJ18B
16P
TDA7386
10
16V
47
16V
0.047
BD3803F-FE2
0.01
2PD601A
2PB709A
47k
1.5k
1.5k
PDTC114EK
2SD1760
100
11ES2
11ES2
11ES2
11ES2
100k
2SA1428
2SA1428
10A
32V
32V
0.0047
1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
SP1
SP2
SP3
SP4
SP5
SP6
SP7
SP8
SP1
SP2
SP3
SP4
SP5
SP6
SP7
SP8
AU6
AU1
AU5
O
R
1
O
R
2
O
F
1
O
F
2
OF1
OF2
OR2
OR1
A
U
7
A
U
8
A
U
2
TU11
T
U
7
T
U
8
A
U
3
A
U
4
BUS5
BUS4
BUS6
BUS3
BUS2
BUS1
B
1
B
2
D
1
D
2
FRONT LCH+
REAR LCH+
REAR RCH+
FRONT RCH+
FRONT LCH-
REAR LCH-
REAR RCH-
FRONT RCH-
REAR RCH+
FRONT RCH+
FRONT LCH+
REAR RCH-
FRONT RCH-
FRONT LCH-
REAR LCH-
REAR LCH+
ANT REM
GND
ANT REM
GND
BATT
ACC
ACC
BATT
GND
FL-
FL+
RL-
RL+
RL IN
GND
RR IN
RR+
RR-
FR+
FR-
GND
VCC2
GND
RIPPLE
FL IN
FR IN
BEEP
GND
VCC1
GND
STBY
MUTE
POWER AMP
(CHASSIS)
R
L
R
L
BUS AUDIO IN
AUDIO OUT
(CHASSIS)
DGND
12C_DATA
12C_CLK
MUTE
SEL
ADJ
VCC
OUT_F1
OUT_R2
OUT_F2
OUT_R1
D2
D1
C2
C1
B2
B1
AP2
AN
AP1
FIL
AGND
MUTING
MUTING
MUTING
MUTING
VSS
NC
VD
D
V
O
U
T
B/U-C
CLK-IN
RST
VCC
GND
DATA
OUT
OUT
IN
DATA
DATA
I/O
VREF
CLK
BATT
RST
BUS-ON
BUS-IN
BUS CONTROL IN
(FOR SONY BUS)
RESET
GND
+B.U
BUS-DATA
(CHASSIS)
(CHASSIS)
(2/2)
BUS-ON
BUS-CLK
SONY BUS
INTERFACE
GND
FL+
FL-
RL+
RL-
RR+
RR-
FR+
FR-
AMP-REM
ATT-REM
ACC
TEST
BATT
INPUT SELECT,
ELECTRICAL
VOLUME
Q722,724-726
B+ SWITCH
Q731,732
REGULATOR
CONTROL
SWITCH
CONTROL
SWITCH
Q450,451
MUTING
ACCESSORY
CHECK
B+ SWITCH
RESET SIGNAL
GENERATOR
B+ SWITCH
Q710,711
Q740,741
+5V REGULATOR
BATTERY
+9V REGULATOR
DETECT
250
µ
H
10k
C730
D731
C734
10
16V
MTZJ9.1C
1
C732
1
R451
D451
1SS133
D742
1SS133
C522
470p
470p
(Page 16)
XR-CA370/CA370X
18
18
D910
C-5
D911
C-6
D912
C-6
D914
C-7
D915
C-8
D916
B-9
D918
C-5
D919
C-3
D920
C-4
D921
B-9
D922
C-9
D924
C-10
D930
C-10
D932
C-7
D933
C-3
D934
B-2
D935
B-2
D936
C-2
D937
C-1
D940
E-3
D941
B-1
D942
B-1
D943
B-10
D944
B-9
D960
E-2
D961
F-2
D962
D-4
D963
D-7
D964
E-10
IC900
E-5
D937
K
A
D936
A
K
D934
KA
D935
KA
D919
KA
D920
AK
D918
AK
D910
KA
D911
KA
D912
AK
D932
KA
D914
AK
D915
AK
D921
KA
D943
D916
KA
D930
A
K
AK
D944
A K
D924
K
A
D922
D933
AK
CONTROL BOARD
(COMPONENT SIDE)
(11)
11
1-686-928-
S980
S958
S974
S959
S956
S979
S957
S975
S978
S955
S953
S954
S951
S960
S961
S962
S963
S968
S965
S964
S970
S977
S969
S976
S983
S972
S971
S973
S967
S982
K
A
56
1
LCD1
LIQUID CRYSTAL DISPLAY
SOURCE
D941, 942, S959, 980
MODE
D937, S956, 979
SEL
D936, S955, 978
AF
D933, S953
ATT
D919, S954
D932, S968
5
D920, S951
D918, S960
DISC –
1
D910, S961
DISC +
2
D911, S962
REP
3
D912, S963
SHUF
4
D914, S965
ATA
PTY
PTY
6
D915, S964
TA
D922, S971, 982
BTM
SENS
D924, S973
OFF
D930, S967, 981
DPSL
D943, 944, S972, 983
EQ3
D916, S970, 977
m
.
–
+
>
M
D921, S969, 976
R955
D960
K
A
D961
K
A
D962
AK
R954
C952
C954
C955
C953
IC900
D963
K
A
R900
R911
R910
R905
R921
R920
R904
R903
R902
R901
D964
AK
R913
R912
R964
R963
R962
R960
R961
R914
R915
R916
R933
R935
R934
R932
R931
R930
CONTROL BOARD
(CONDUCTOR SIDE)
(11)
11
1-686-928-
1
20
21
40
41
60
61
80
CN900
1
11
2
12
A
MAIN BOARD
CN600
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
SEEK
–
D934,
S957, 975
+
D935,
S958, 974
(VOLUME)
D941
A
K
KA
D942
D910 – 912, 914 – 916,
D918 – 922, 924, 930,
D932 – 937, 941 – 944
S981
KA
R917
R918
R967
R966
R965
D940
(LCD BACK LIGHT)
5-5.
PRINTED WIRING BOARD – CONTROL Board –
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
(Page 15)
XR-CA370/CA370X
19
19
5-6.
SCHEMATIC DIAGRAM – CONTROL Board –
•
See page 14 for Waveform.
R902
R903
R904
R905
D960
CN900
S973
D963
D961
D962
IC900
S963
S958
S974
S954
S957
S975
S970
S977
S976
S969
S953
S960
S961
S962
S951
C954
C955
C952
R954
C953
R960
R961
R933
R930
R931
R910
R912
R914
R915
R920
R963
R955
R901
LCD1
S956
S979
S978
S955
S980
S959
S971
S982
S967
S981
S972
S983
D964
R900
S965
S964
S968
D921
D916
D919
D935
D934
D920
D915
D912
D930
D932
D922
D910
D924
D911
D914
D918
D933
D936
D937
D940
D943
D944
R935
R932
R916
R913
R911
R921
R934
D942
R917
D941
R965
R966
R967
R918
R964
R962
1k
1k
1k
1k
1SS355
12P
1SS355
1SS355
1SS355
LC75884W
0.047
0.047
680p
43k
0.47
220
220
100
100
100
100
100
100
100
100
220
0
1k
1SS355
0
NSPW310BST
100
100
220
220
100
220
∗
C
OM
1
C
OM
2
C
OM
3
CO
M
4
COM
1
COM
2
COM
3
C
OM
4
S1
S2
S3
S4
S5
S
6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S
37
S38
S
39
S40
S41
S42
S43
S
44
S45
S
1
S2
S3
S4
S
5
S6
S7
S8
S9
S10
S
11
S12
S
13
S
14
S15
S16
S17
S18
S19
S
20
S
21
S
22
S46
S47
S48
S49
S50
S51
S
51
S50
S49
S48
S47
S45
S46
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S23
S24
S25
S26
S27
S28
S29
S30
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
KS6
VDD
VLCD
VLCD1
VLCD2
VSS
TEST
OSC
DO
CE
CL
DI
S1
S2
S42
S41
S40
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
S39
C
O
M
4
C
O
M
3
C
O
M
2
C
O
M
1
S
5
3
S
52
S
5
1
S
5
0
S
49
S
4
8
S
47
S
46
S
45
S
44
S
43
S
3
S
4
S
5
S
6
S
7
S
8
S
9
S
1
0
S
11
S
1
2
S
13
S
1
4
S
15
S
1
6
S
1
7
S
18
S
1
9
S
20
S
2
1
S
22
LAMP+B
LAMP+B
GND
GND
BU+5V
(CHASSIS)
S
1
S
2
S
3
S
4
S
5
S
6
S
7
S
8
S
9
S
1
0
S
11
S
1
2
S
1
3
S
1
4
S
1
5
S
1
6
S
1
7
S
1
8
S
1
9
S
20
S
2
1
S
2
2
S
3
7
S
3
6
S
3
5
S
3
4
S
33
S
3
2
S
31
S
30
S
2
9
S
2
8
S
27
S
2
6
S
2
5
S
24
S
23
S
45
S
44
S
43
S38
S
42
S
4
1
S
40
S
3
9
S
38
C
O
M
4
CO
M
3
CO
M
2
C
O
M
1
NOSE SW
LCD-RESET
LCD-CLK
LCD-DI(TX)
LCD-CE
LCD-DO(RX)
DISC -
1
MODE
DSPL
S958,974
ATT
OFF
SHUF
4
REP
3
DISC +
2
+
-
S969,976
S970,977
LIQUID CRYSTAL DISPLAY
LIQUID CRYSTAL
DISPLAY DRIVER
5
FRASH WRITE
RES
KI1
KI2
KI3
KI4
KI5
KS
5
K
S
4
K
S
3
K
S
2
K
S
1
-(VOLUME)
+(VOLUME)
S
4
6
S
47
S
4
8
S
4
9
S
5
0
S
51
SEL
S955,978
S956,979
S957,975
S959,980
S971,982
S967,981
S972,983
SOURCE
AF
ATA
PTY
TA
SEEK
EQ3
BTM
SENS
6
5
DSPL
OFF
BTM
SENS
REP
3
SHUF
4
6
TA
ATA
PTY
DISC +
2
DISC -
1
ATT
+
-
SEEK
D916
D921
+
-
(VOLUME)
AF
SEL
MODE
∗
CL-170SR-CD
CL-170PG-CD
(CA370X)
(CA370)
D918-922,924,D930-938
D910-912,914-916,
(LCD BACK LIGHT)
(CA370X)
(CA370)
∗
D941-944
CL-190PG-CD
CL-190SR-CD
(CA370X)
(CA370)
∗
R911,913
120
270
(CA370X)
(CA370)
∗
R962
22
180
(CA370X)
(CA370)
∗
270
150
(CA370X)
(CA370)
∗
R965
22
180
R916,921,932
(CA370X)
(CA370)
∗
150
R935
330
D941,942
SOURCE
D943,944
EQ3
4
(Page 16)
XR-CA370/CA370X
20
20
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC200
SAA6588T/V2-518
IC800
MM1175XFF
SCOUT
MRO
MPTH
TCON
OSCO
OSCI
VSSD
VDDD
DAVN
SDA
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
SCL
2
1
6
15
11
13
16
14
12
INTERFACE
REGISTER
SIGNAL QUALITY
DECODER
CLOCKED
COMPARATOR
POWER SUPPLY
& RESET
TEST
CONTROL
OSCILLATOR
& CLOCK
PAUSE
DETECTOR
MULTI
PATH
DETECTOR
57kHz
8th ORDER
BAND-PASS FILTER
RDS/RDBS
DECODER
RDS/RDBS
DEMODULATOR
IIC BUS SLAVE
TRANSCEIVER
17
18
CIN
19
LVIN
20
8
7
DATA
CLOCK
DATA
CLOCK
4
4
5
9
10
3
4
5
RESET
SWITCH
BATT
SWITCH
1
2
3
4
5
6
7
8
9
10
14
13
12
11
BUS ON
OUT
RESET
OUT
BATT
CLK
OUT
VREF
DATA
IN/OUT
GND
BATT
CHECK
CHECK
CLK
IN
IN
BUS ON
IN
IN
RESET
IN
IN
VCC
DATA IN
DATA OUT
IC400
BD3803F-FE2
22
DGND
21
SDA
20
SCL
19
MUTE
18
SEL
17
ADJ
16
VCC
15
OUTF1
14
OUTR1
13
OUTF2
12
OUTR2
6
B1
7
B2
8
C1
9
C2
10
D1
11
D2
1
2
C BUS
LOGIC
VCO
FADER
(0 ∼ –58,
–
∞
dB)
FADER
(0 ∼ –58,
–
∞
dB)
FADER
(0 ∼ –58,
–
∞
dB)
FADER
(0 ∼ –58,
–
∞
dB)
BASS, TREBLE, MIDDLE
(–15dB ∼ +15dB, 1dB STEP)
VOLUME
(+23 ∼ –79dB, –
∞
dB
1dB STEP)
INPUT GAIN
(0 ∼ 15dB, 1dB STEP)
MUTE
INPUT SELECTOR
(4 STEREO INCLUDE 1 ISOLATION INPUT)
BASS, TREBLE, MIDDLE
(–15dB ∼ +15dB, 1dB STEP)
VOLUME
(+23 ∼ –79dB, –
∞
dB
1dB STEP)
INPUT GAIN
(0 ∼ 15dB, 1dB STEP)
MUTE
1
A
GND
2
VCC/2
FIL
3
AP1
4
AN
5
AP2
TONE
PASS
PASS
TONE
PASS
PASS
5-7.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC1 MN101C49KSF (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VREF –
—
Reference voltage (0V) terminal (for A/D converter)
2
VSM
I
FM and AM signal meter voltage detection input from the tuner unit (A/D input)
3 to 6
NC
I
Not used
7
QUALITY
I
Noise level detection signal input from the tuner unit (A/D input)
8
MPTH
I
Multi-path detection signal input from the RDS decoder (A/D input)
9
NC
I
Not used
10
VREF +
—
Reference voltage (+5V) terminal (for A/D converter)
11
VDD
—
Power supply terminal (+5V)
12
OSC2
O
Main system clock output terminal (18.432 MHz)
13
OSC1
I
Main system clock input terminal (18.432 MHz)
14
VSS
—
Ground terminal
15
XI
I
Sub system clock input terminal (32.768 kHz)
16
XO
O
Sub system clock output terminal (32.768 kHz)
17
MMOD
I
Setting terminal for the single chip mode “L”: single chip (fixed at “L” in this set)
18
LCD-SO (TX)
O
LCD serial data output to the liquid crystal display driver
19
LCD-SI (RX)
I
LCD serial data input from the liquid crystal display driver
20
LCD-CKO
O
LCD serial transfer clock signal output to the liquid crystal display driver
21 to 23
NC
O
Not used
24
SYS-RES
O
System reset signal output to the SONY bus interface “L”: reset
25
BUS-ON
O
Bus interface control signal output to the SONY bus interface “L”: uni-link on
26
KEYACK
I
Key acknowledge signal detection input from the liquid crystal display driver
27
DAVN
I
RDS serial data request signal input terminal
28
BU-IN
I
Battery detection signal input from the bus interface and battery detect circuit
“L” is input at low voltage
“L” is input at low voltage
29
NC
I
Not used
30
TU-ATTIN
I
Tuner muting on/off control signal input from the tuner unit “L”: muting on
31, 32
NC
I
Not used
33
RESET
I
System reset signal input from the reset signal generator and reset switch “L”: reset
“L”is input for several 100 msec after power on, then it changes to “H”
“L”is input for several 100 msec after power on, then it changes to “H”
34
NC
O
Not used
35
BEEP
O
Beep sound drive signal output to the power amplifier “H”: beep on
36
POWER-ON
O
Main system power supply on/off control signal output “H”: power on
37
ILL-IN
I
Illuminate line detection signal input terminal “L”: ill on Not used
38
ACC-IN
I
Accessory detection signal input “L”: accessory on
“H” is input for several 200 msec after accessory on, then it changes to “L”
“H” is input for several 200 msec after accessory on, then it changes to “L”
39
NC
O
Not used
40
TEL-ATT
I
Telephone muting signal input terminal At input of “H”, the signal is attenuated by –20 dB
Not used
Not used
41
NCI
I
Not used
42
BUS-SO
O
Serial data output to the SONY bus interface
43
BUS-SI
I
Serial data input from the SONY bus interface
44
BUS-CKO
O
Serial data transfer clock signal output to the SONY bus interface
45
I2C-SIO
I/O
Two-way data bus with the tuner unit, RDS decoder and electrical volume
46
NC
O
Not used
47
I2C-CKO
O
Serial data transfer clock signal output to the tuner unit, RDS decoder and electrical volume
48
AMP-ON
O
Standby on/off control signal output to the power amplifier
“L”: standby mode, “H”: amplifier on
“L”: standby mode, “H”: amplifier on
49
AMP-ATT
O
Muting on/off control signal output to the power amplifier “L”: muting on
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