Panasonic SACH-74 Schematic [pl]
Baza Porad Serwisowych
Spis schematów
Zestaw audio Panasonic SA-CH74
+B
SEMICONDUCTOR LASER
PHOTO DETECTOR
EE
DC
AB
DC
FF
AN88358E1
IC 701
SERVO AMP
Q701
LASER
POWER DRIVE
+B
+B
7
6
_
+
4
LPD
5
VREF
LD
1
PDA
PDB
2
PDE
27
28
PDF
VREF
VREF
VREF
LDON
13
+
_
VREF
+
_
+
_
RF RFIN
FR DET
D
+
_
VREF
VREF
A
VREF
+
B
_
VREF
E
VREF
F
VREF
ACH
VCBA
BCH
ECH
VCBA
FCH
TBAL
24
8
CAGC
BDO DET
AGC
RF DET
SUBTRACTER
SUBTRACTER
VREF
VREF
FBAL
25 16
CROSS
+B
10
CSBRT
OFTR
DET
VREF
+
_
_
+
CCRS
22
21
+B
11
CEA
3 TENV
/RFDET
OFTR
+
_
_
+
_
+
_
+
TEBPF
TE
20
VREF
ENV
ARF
BOO
FE
VCC
VREF
GND
VDET
(RF)
19
9
12
15
17
23
+B
3
26
14
18
TJ7
01
TRACKING FOCUS
COIL COIL
TRAVERSE MOTOR
____
____
SPINDLE
MOTOR
AN8389SE1
IC 703
FOCUS COIL/TRACKING
COIL/TRAVERSE MOTOR
/SPINDLE MOTOR DRIVE
NRESET
RESET
SIGNAL
GENERATOR
22
D4+
FOCUS
COIL
21
D4-
DRIVE
D3+
20
TRACKING
19
COIL
D3-
DRIVE
16
D1+
TRAVERSE
D1-
MOTOR
13
DRIVE
D2+
18
SPINDLE
MOTOR
D2-
17
DRIVE
5.8
GND
14
PGND 1
23
PGND 2
PVCC 1
PVCC 2
VREF
PC 2
VCC
IN 3
IN 4
IN 1
PC 1
IN 2
IC 702
47
DSLF
ARF
47
39 B00
38 RF DET
34 RF ENV
37 FE
33 TE
36 DFT
37 TRCRS
35 VDET
29 VREF
31 TBAL
30 FBAL
41 TES
43 WVEL
42 PLAY
40 LDON
TJ 702
VREF
7
2
4
3
11
12
9
10
1
+B
13
24
DSL
SYNCHRONIZING
PROTECTION
SERVO
INPUT
PORT
A/D
D/A
CONVERTER
TRD
CONVERTER
FOD
27
SERVO PROCESSOR/DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER /D/A CONVERTER
+B
80
4
DV D01
FREQUENCY
EFM
DATA
DEMODULATOR
SENSE
_______
10
50
60
VDO
SSEL
AV D02
16K
SRAM
PEAK
DETECTOR/
AUTO CUE
SUB-CODE
DEMODULATOR
CRCC
CHECK
CRCC
CHECK
____
FLOCK
RST
TLOCK
_______
11
12
72
AV D01
BLKCK
18 13
TVD
28
PHASE
COMPARATOR
SERVO
CPU
ECS
KICK
22
25
48
PLLF
VCO
SYNCHRONIZING
INTERPOLATION
PROTECTION
RAM
ADORESS
GENERATOR
CLV
SERVO
SERVO OUTPUT
PORT
TRV
PC
ECM
26
24
21
COMPARATOR
23
SQCK
14 15
SYNDROME
CALCULATION
DECODER
INTERPOLATION
/SOFT MUTING
/DIGITAL
ATTENUATION
SUBQ
CIRC
DIGITAL DE-EMPHASIS
DIGITAL FILTER
MASH LOGIC
MICROCOMPUTER
INTERFACE
STAT
MDATA
17
MN662740RM1
DIGITAL AUDIO
INTERFACE
S/P
CONVERTER
PWM
LOGIC
LOGIC
PWM
MLD
MCLK
8
7
9
+B
TIMING
GENERATOR
/PITCH
CONTROL
S701(REST)
TX 6
DMUTE 16
X2 59
X1 58
SMCK
OUTL
+
_
OUTR
+
_
SUBC 55
SBCK 56
DVSS1
AVSS1 74
AVSS2 51
VSS 57
CLDCK 62
19
73
75
5
MDATA
STAT
SUBQ
SQCK
BLKCK
____
RST
_______
TLOCK
______
FLOCK
SENSE
REST SW
MLD
MCLK
DMUTE
X701
(16,9344 MHz)
LCH
RCH
TO
IC 901
SERWIS ELEKTRONIKI
A
Spis schematów
Zestaw audio Panasonic SA-CH74
Baza Porad Serwisowych Baza Porad Serwisowych Baza Porad Serwisowych
BCD
Baza Porad Serwisowych
E
BU4052BCF-E2
SA-CH74
AUX
Lch
AM ANT
Z3
Q1
D6
D9
D7
D8
+B
RF AMP
Q3
3
+B
POWER
SUPPLY
CONTROL
Q2
MIXER
Q4
BUFFER
OSC
4
7
+B
(FM)
AM LOOP ANT
L9
MW ANT
COIL
L10
SW ANT
COIL
L11
MW OSC
COIL
L12
SW OSC
COIL
21
22
16
15
Q7
+B
Q16
SWITCHING
SWITCHING
SWITCHING
Q19
SWITCHING
D10
POWER
SUPPLY
CONTRO
Q21
(FM)
PLL FREQUENCY SYNTHESIZER
8
Q15
Q18
POWER
SUPPLY
CONTROL
LC 7218
1
5
Q10, Q11
FM/AM
(LW/MW)
LOOP FILTER
1 1
Q13, Q14
FM/MW/LW
FILTER LOOP
D11
UNIVERSAL
COUNTER
Q22
IC 2
CF 1
6
PHASE DETECTOR
CHARGE PUMP
Q6, Q12
FM
IF AMP
SWALLOW COUNTER
1/6,1/17,4 BIT
2 BIT PROGRAMMABLE
7
8
14
CF 2
SWITCHING
Q20
24
23
ALC
AM
OSC
BUFFER
LEVEL
DET
FM
IF
6
REFERENCE
DIVIDER
DIVIDER
SHIFT REGISTER LATCH
17
S-CURVE
FM
DET
REG
2
1
12
3
+
AM
IFT
T1
1
2
11
13
D5
21
22
AM
MIX
AM/FM
IF
BUFFER
4
CF 3
9
Z1
MW
ANT
COIL
Q17
SWITCHING
+
19
20
AM
RF AMF
AGC
AM
AM
IF
IF
COMP
TUNING
DRIVE
FM
ST
SD
6
5
ELEKTRONIKI
1
24
19
18
5
DO
CE
2
3
DI
4
CK
18
AM
7
X3
LW
OSC
COIL
+
1617
MUTE
FF
VCO
AM/FM
SW
89
+B
X2
(FM)
+B
10
15
DECODER
FF
PHASE
DET
STEREO
IC 1
LA 1832A
FM/AM IF AMP,
DET/AM OSC,
MIX/FM MPX
RCH
14
DRIVE
FF
11
+
+
B
13
STEREO
SW
TRIG
PILOT
DET
12
ST
SD
CE
CK
DO
Lch
M 51167 BFP-TB
I C 101 (1/2)
P.B. EQ/TPS AMP
19
30(7)
18
TPS
(F REC INH)
+
28(9)
29(8)
(DECK 2)
S 975
16
(R. REC INH)
3
TPS IN
17
3
+
S 974
SYSTEM CONTROL/ FL DRIVE
CC
V
VREF
91
+B5
100
D 601
+B5
VR 603 (VOLUME/PULSE ENCODER)
PB
HEAD
R/P
HEAD
I C 102
(DECK 2)
ERASE
HEAD
Lch
Lch
Q 103(Q 104)
R/P
Select
4
2
1
+B9
Q 107, 109
(Q 108, 110)
Beat proof
Drive
Q 171, 179, 180
Q 101(Q102)
R/P
Select
3
5
L 201
Z 971
Network
Q 218
M51167B FP-TB
I C 101 (1/2)
REC AMP/ALC
24
(13)
14
CR network
Tape select
Rec EQ
(Metal/Cr 02)
+B9
Bias OSC
Control
Q 173-176
(HALF)
S 972
V ref
M 38197 MA 123 F
36(1)
33(4)
32(5)
31(6)
CR
+
_
25
(12)
(MODE)
S 971
+
_
21
26(11)
SW
C
ALC
A
B
AGC OFF
22
23
15
(DECK 1)
S 953
(ATS /Cr 02)
Q 205
(DECK 2)
S 973
(ATS /Cr 02)
ON2180 RLC ON 2180 RLC
I C 971
(DECK 2)
PHOTO
INTERRUPTER
Interface
1
DECK 2
I C 601 (1/4)
RMT
31
Z 601
REMOTE
SENSOR
ELEKTRONIKI
S1 (STOCKER POSITION DET)
(DECK 1)
(DECK 2)
STAT
S3 (UP POSITION DET)
S2 (PLAY POSITION DET)
S4 (TRAY OPEN DET)
S5 (DISC NUMBER DET)
BA7755A
R/P SELECT
TO
IC 702
SUBQ
SQCK
BLKCK
RST
TLOCK
FLOCK
SENSE
REST
MCLK
MDATA
A
MLD
BA 6418N
IC 1
MOTOR
DRIVE
2
5
8
LOADING MOTOR
M
9
31
FWD
REW
7
6
+B3
D
/CDG
RESET
16
CHNGCR
SW 1
17
CHNGCR
SW 2
26
MLD/ PLL CE
DI
27
MDATA/PLLDATA
28
MCLK/ PLL CLK
97
DO IN
95
SD IN
STEREO IN
FLOCK
SENSE
REST SW
M 38197 MA 123 F
24
25
29
96
23 18
TLOCK
CDRST
302022
SQCK
BLKCK
IC 601 (1/4)
19 43
SUBQ
STATUS
44
CDG
MUTE
SYSTEM CONTROL / FL DRIVE
BU 4066 BCF-E2
I C 104
DECK 1/2 SELECTOR
(P. B. GAIN ADJ)
VR 101 VR 103
(VR 102) (VR 104)
High
Speed
Drive
Q 105
(Q 106)
7
9
SS
V
HI SP
V ref
40
5
BP 1
BU 2040 F-E2
BP 2
I C 951
(DECK 1)
(HALF)
S 952
JOGA
89
Q117
S 951
JOGB
90
(MODE)
Interface
DECK 1
+B8
14
1
(11)
13
(12)
4
(8)
IH
PHOTO
INTERRUPTER
2
7
2(10)
3(9)
5(6)
10
I C 105 (1/2)
2M
12
D 971
SOLENOID
11
REC
Q 203, 204
Z 101
Q 206, 208
Solenoid
Drive
(DECK 2)
2PL
SYSTEM
CONTROL
IM
Q 220
Motor
Drive
M
MOTOR
(DECK 2)
14
13
ADJ)
VR 201
(TAPE
SPEED
ELEKTRONIKI
MBP2
Q 602 603
X tal
Control
BU4066BCF-E2
I C 308
SWITCHING
10(2)
9(3)
Q115(Q116)
Muting
drive
3
1
(14)
(16)
+
-
ATT.2
OFF=H
2
5
+B9
86
DMT
DOLBY
BU2090F-E2
CLK
DATA
2
3
93
94
MKCLK
MKDATA
XOUT
X602(6MHz)
XIN
38
MBP1
42 41 39
11(1)
12(13)
8(4)
6(5)
+
+
7
6
+
(11)
4
(10)
ATT.1
+
SC
Del
ATT.3
P=H
15
12
+B8
4
Vcc
TAPE
I C 105 (1/2)
Q207,209
1PL
15
Solenoid
driver
(Deck1)
M38197MA123F
Q151(Q152)
Muting
drive
Buffer
amp.
Q153(Q154)
8
(9)
CXA1102M-T4
I C 103
DOLBY B NR
16
1
GND
SYSTEM
CONTROL
SOLENOID
D951
D603
4
CRT
IC 601(1/4)IC
XCIN
XCOUT
37
X601(32,7kHz)
601(1/4)
36
I C 301
INPUT SELECTOR
12(1)
13(3)
14(5)
7
9
10
5
SEL B
/CD
MUTE B
6
15
A
B
BA4538FDXE2
I C 441
Buffer
amp.
+B1
4
SEL A
14
SPE
CONT A
+B9
15(2)
11(4)
16
8
SW CONT
8
7
CD
DMUTE
SYSTEM CONTROL/FL DRIVE
GRD16
49
DAP803
IC608-609
DIODE ARRAY
+B9
16
KEYCON
MIC MT
12
2
SPE
CONT B
GRD1
64 65 88
FL601
FL DISPLAY
SYSTEM CONTROL
I C 304
BU2090F-E2
+B8
1
/TUNER
VDD
GND
VOLATT
/V BASS
DATA
CLK
MUTEA
3
SPE
CONT C
AND24
AND1
11
9
10
13
15
SPEANA INPUTSPEANA
C
INPUT
FROM
POWER
TRANSFORMER
Rch
BUFFER
AMP 1
_
6
+
4
X3
A
B
BUFFER
AMP 2
ELEKTRONIKI
_
37
+
DATA
2
1
CLK
Q307 311
D
4
56
FWD REV
BU2090F-E2
I C 605
LED DRIVE
DATA CLK
12
SER3
M38197MA136F
IV
AMP
MICRO
COMPUTER
INTERFACE
Mic
muting
15
32
9
SER1
_
+
X1
DISC LED
A
A
B
X2
VC
AMP
+
_
B
AVDD DVDD
3
40
+B2
6
BU2090F-E2
I C 606
LED DRIVE
DATA CLK
11
+B8
2
SER2
5
38
M62426FPE1
X19(X18)
13
(30)
I C 302
X21(X20)
14
(29)
EFF
AMP 1(2)
X23(X22)
15
(28)
A
_
+
X25
(X24)
17
(26)
+
DIGITAL SOUND CONTROL
X17(X16)
B
X27
(X26)
BB AMP 1(2)
18
(25)
_
+
+
16
(27)
FIN
AMP 1(2)
+
_
19
(24)
M51131L-702
IC303
ELECTRONIC
VOLUME
20
(23)
BA4558FDXT1
Q305(306),Q309
Muting
control
MUTEA
/V BASS
VOLATT
Q301,303(302,304)
Switching
(V.BASS)
Attenuator
Q308
Attenuator
control
14
(2)
I C 305
Q404
Regulator
VCA cont.
VCA
+B9
Switching
8
Q401
10
7,9,111
Q503,506
D409
X5
MIX
AMP `1(2)
BASS
AMP 1(2)
_
+
9
(34)
IC306
39
_
+
X15(X14)
X13(X12)
MIC
AMP (2)
_
+
10
11
(33)
+
+
12
(32)
(31)
X6
A
X9(X8)
A
Rch
7
(36)
Buffer amp.
Rch
X4
B
X11(10)
A
B
8
(35)
B
B
A
X7
IC306
BA4558FDXT1
C
Q402
+B2
15
+B1
LM2940T5ML M 2 9 4 0 T 5 M
+B7
+B6
3
13 14
SER4
SER5
SYSTEM CONTROL / FL DRIVE
KEY4
KEY1
5
8
32 98 10
VP
DC DET
/RESET
35
Q601
VOL OUT
Reser
drive
PCONT
+
33
/HALT
34
KEY SW
+B8
+B4
+B5
NOTE: FM SIGNAL LINE AM SIGNAL LINE CD SIGNAL LINE RECORDING SIGNAL LINE
FM O S C SIGNAL LINE AM O S C SIGNAL LINE C D G SIGNAL LINE PLAYBACK SIGNAL LINE
D401
I C 401
Regulator
ELEKTRONIKI
Q405,409
D402
Power
supply control
Q404
Regulator
Regulator
+B3
Q410
Regulator
Q403
+B9
Power
supply
VR601
(MIC)
13
(3)
Butter
amp.
10
(14)
Over load
det.
+B1
+B1
Q502,504
Regulator
Q507
Regulator
Q505
Regulator
Q407
Pdown
det.
(for GC, GCS, GT,GH only)(for GC, GCS, GT,GH only)
Q605, Q606
Buffer
TA2011S
IC602
11
(13)
9
D503-506
Q501
Relay
drive
VR602
RSN3502
IC501
POWER AMP
NF
_
+
Detection
Power
Muting
on/off
Bias
7
2
3
+
+B1
D501,502
D407
TO
FL DISPLAY
Echo
MIC
amp.
6
8
+B1
MIC SIGNAL
I C 604
M65843FPE1
Q607
Buffer
(for GC, GCS, GT,GH only)(for GC, GCS, GT,GH only)
4
(1)
RLY501
HEADPHONES
SPEAKERS
(6 )W
+
Lch
_
T501
POWER TRANSFORMER
F1
Volt
Selector
VR 1
MIC 1
MIC 2
AC
IN
SERWIS ELEKTRONIKI SERWIS ELEKTRONIKI SERWIS ELEKTRONIKI
SERWIS ELEKTRONIKI
A
Spis schematów
Zestaw audio Panasonic SA-CH74
SA-CH74
Baza Porad Serwiso
1
Q10, Q11
FM/AM
(LW/MW)
LOOP FILTER
FILTER LOOP
Z3
1
5
Q13, Q14
FM/MW/LW
Q1
D6
D9
D7
D8
RF AMP
Q3
3
+B
Q2
MIXER
OSC
4
7
+B
(FM)
AM LOOP ANT
L9
MW ANT
COIL
L10
SW ANT
COIL
L11
MW OSC
COIL
L12
SW OSC
COIL
POWER
SUPPLY
CONTRO
Q21
21
22
16
15
Q4
BUFFER
SWITCHING
SWITCHING
SWITCHING
Q19
SWITCHING
D10
8
Q16
Q15
Q18
6
D11
CF 1
PHASE DETECTOR
CHARGE PUMP
SWALLOW COUNTER
FM
CF 2
24
ALC
BUFFER
LEVEL
DET
FM
IF
1
6
REFERENCE
DIVIDER
DIVIDER
SWITCHING
Q6, Q12
IF AMP
1/6,1/17,4 BIT
2 BIT PROGRAMMABLE
2
Q20
23
T1
AM
OSC
S-CURVE
FM
DET
REG
AM
IFT
AM ANT
22
3
+
CF 3
21
AM
MIX
AM/FM
IF
BUFFER
4
Z1
MW
ANT
COIL
Q17
SWITCHING
+
19
20
AM
RF AMF
AGC
AM
AM
IF
IF
COMP
TUNING
DRIVE
FM
ST
SD
6
5
ELEKTRONIKI
18
AM
7
LW
OSC
COIL
+
1617
MUTE
FF
VCO
AM/FM
SW
89
+B
X2
(FM)
+B
10
15
DECODER
FF
PHASE
DET
LA 1832A
FM/AM IF AMP,
DET/AM OSC,
MIX/FM MPX
RCH
14
STEREO
DRIVE
FF
11
+
+
IC 1
13
STEREO
12
SW
TRIG
PILOT
DET
TO
IC 702
STAT
SUBQ
SQC
BLKCK
TLOCK
FLOCK
K
RST
SENSE
REST
MCLK
1
X3
24
1
2
19
18
ST
A
MDAT
MLD
A
POWER
SUPPLY
+B
CONTROL
Q7
(FM)
PLL FREQUENCY SYNTHESIZER
+B
UNIVERSAL
COUNTER
POWER
SUPPLY
CONTROL
Q22
IC 2
LC 7218
5
DO
CE
SHIFT REGISTER LATCH
7
8
14
11
12
17
9
13
D5
2
3
DI
4
CK
B
SD
CE
DI
CK
DO
26
MLD/ PLL CE
27
MDATA/PLLDATA
28
MCLK/ PLL CLK
97
DO IN
9
95
SD IN
STEREO IN
SERWIS ELEKTRONIK
B
Spis schematów
M
P. B
5
SQCK
RST
MLD
95
PB
HEAD
R/P
HEAD
Lch
Lch
Q 103(Q 104)
R/P
Select
Q 101(Q102)
R/P
Select
Q 218
36(1)
33(4)
32(5)
31(6)
CR
Network
M51167B FP-TB
I C 101 (1/2)
2
ELEKTRONIKI
S1 (STOCKER POSITION DET)
(DECK 1)
(DECK 2)
REC AMP/ALC
S3 (UP POSITION DET)
BA7755A
S2 (PLAY POSITION DET)
S4 (TRAY OPEN DET)
S5 (DISC NUMBER DET)
BA 6418N
IC 1
MOTOR
DRIVE
2
5
8
LOADING MOTOR
M
9
31
FWD
REW
7
6
+B3
I C 102
R/P SELECT
(DECK 2)
ERASE
HEAD
D
24
25
29
96
23 18
302022
19 43
16
44
17
4
2
1
+B9
Q 107, 109
(Q 108, 110)
Beat proof
Drive
Q 171, 179, 180
24
(13)
3
5
L 201
14
CR network
Tape select
Rec EQ
(Metal/Cr 02)
+B9
+
_
Bias OSC
Control
Q 173-176
SW
C
A
B
23
25
(12)
E
(D
S 9
(AT
D
(
S
T
(A
ON2
(D
PH
T
IN
(MODE)
S 971
(HALF)
S 972
Z 971
V ref
SD IN
STEREO IN
FLOCK
SENSE
REST SW
TLOCK
CDRST
M 38197 MA 123 F
BLKCK
SQCK
SUBQ
IC 601 (1/4)
CDG
MUTE
/CDG
STATUS
RESET
CHNGCR
SYSTEM CONTROL / FL DRIVE
SW 1
CHNGCR
SW 2
M 38197 MA 123 F
Z601
REMOTE
SENSOR
M 51167 BFP-TB
Spis schematów
I C 101 (1/2)
P.B. EQ/TPS AMP
+
5)
_
6)
21
17
C
BU4052BCF-E2
I C 301
INPUT SELECTOR
AUX
Lch
Lch
BU 4066 BCF-E2
I C 104
DECK 1/2 SELECTOR
Q 105
(Q 106)
High
Speed
Drive
(P.B. GAIN ADJ)
VR 101 VR 103
(VR 102) (VR 104)
Q117
+B8
7
14
1
(11)
13
(12)
4
(8)
2(10)
3(9)
5(6)
19
30(7)
18
TPS
16
+
BU4066BCF-E2
I C 308
SWITCHING
10(2)
9(3)
Q115(Q116)
11(1)
12(13)
8(4)
6(5)
12(1)
15(2)
16
+B9
11(4)
8
SW CONT
8
7
13(3)
14(5)
7
+B1
9
10
5
4
SEL B
SEL A
/CD
MUTE B
6
15
KEYCON
14
P-TB
ALC
26(11)
SW
C
ALC
A
B
22
23
15
(DECK 1)
S 953
(ATS /Cr 02)
(DECK 2)
S 973
(ATS /Cr 02)
ON2180 RLC ON 2180 RLC
I C 971
(DECK 2)
PHOTO
INTERRUPTER
Interface
1
DECK 2
23 F
I C 601 (1/4)
RMT
31
TE
AGC OFF
+
Q 205
28(9)
29(8)
3
HI SP
7
BP 1
BP 2
9
(DECK 2)
(F REC INH)
S 974
(R. REC INH)
S 975
V ref
3
TPS IN
SYSTEM CONTROL/ FL DRIVE
CC
V
91
+B5
SS
V
VREF
100
40
D 601
+B5
VR 603 (VOLUME/PULSE ENCODER)
5
BU 2040 F-E2
I C 951
(DECK 1)
(MODE)
S 951
(HALF)
S 952
JOGB
JOGA
89
90
Interface
DECK 1
10
IH
PHOTO
INTERRUPTER
2
REC
I C 105 (1/2)
2M
12
Q 203, 204
D 971
11
Z 101
SOLENOID
Q 206, 208
Solenoid
Drive
(DECK 2)
2PL
SYSTEM
CONTROL
IM
Q 220
Motor
Drive
M
MOTOR
(DECK 2)
14
13
VR 201
(TAPE
SPEED
ADJ)
ELEKTRONIKI
MBP2
Q 602 603
X tal
Control
Muting
drive
3
1
(14)
(16)
+
-
ATT.2
OFF=H
2
5
+B9
86
DMT
DOLBY
BU2090F-E2
CLK
DATA
2
3
93
94
MKCLK
MKDATA
XOUT
X602(6MHz)
XIN
38
MBP1
42 41 39
+
+
7
6
+
(11)
4
(10)
ATT.1
+
SC
Del
ATT.3
P=H
12
+B8
4
TAPE
I C 105 (1/2)
Q207,209
1PL
15
Solenoid
driver
(Deck1)
M38197MA123F
Q151(Q152)
Muting
drive
Buffer
amp.
Q153(Q154)
8
(9)
CXA1102M-T4
I C 103
DOLBY B NR
15
16
1
Vcc
GND
SYSTEM
CONTROL
SOLENOID
D951
D603
4
CRT
IC 601(1/4)IC 601(1/4)
XCOUT
37
X601(32,7kHz)
XCIN
36
B
BA4538FDXE2
CD
DMUTE
SYSTEM CONTROL/F
DAP803
IC608-609
DIODE ARRAY
A
I C 441
Buffer
amp.
49
SPE
CONT A
GRD16
GRD1
6
FL601
SERWIS ELEKTRONIK
D
Spis schematów
Baza Porad Serwiso
4
+B9
KEYCON
12
SYSTEM CONTROL
+B8
1
16
VDD
DATA
MIC MT
CLK
2
3
I C 304
BU2090F-E2
11
/TUNER
GND
/V BASS
VOLATT
MUTEA
9
10
13
5
BUFFER
AMP 1
_
6
+
4
X3
A
B
BUFFER
AMP 2
ELEKTRONIKI
C
Rch
_
37
+
DATA
2
1
CLK
Q307 311
IV
AMP
MICRO
COMPUTER
INTERFACE
Mic
muting
_
+
A
X1
A
B
X2
VC
AMP
+
_
B
AVDD DVDD
40
+B2
X6
A
X9(X8)
A
Rch
7
(36)
Buffer amp.
Rch
X4
B
X11(10)
A
B
8
(35)
B
B
A
X7
3
+B8
I C 306
X5
_
+
MIX
AMP `1(2)
BASS
AMP 1(2)
_
+
9
(34)
I C 306
38
39
X15(X14)
X13(X12)
MIC
AMP (2)
_
+
10
11
(33)
+
+
12
(32)
(31)
M62426FPE1
X19(X18)
13
(30)
I C 302
X21(X20)
14
(29)
EFF
AMP 1(2)
X23(X22)
15
(28)
A
_
+
X25
(X24)
17
(26)
+
DIGITAL SOUND CONTROL
X17(X16)
B
X27
(X26)
BB AMP 1
A
(
_
+
18
(25)
+
BA4558FDXT1
SPE
SPE
CONT B
CONT C
GRD1
AND1
64 65 88
FL DISPLAY
AND24
15
SPEANA INPUT
SPEANA INPUT
FROM
POWER
TRANSFORMER
D
4
56
FWD REV
BU2090F-E2
I C 605
LED DRIVE
DATA CLK
32
12
9
SER3
M38197MA136F
15
SER1
DISC LED
6
BU2090F-E2
I C 606
LED DRIVE
DATA CLK
3
2
11
SER2
15
13 14
SER4
SER5
SYSTEM CONTROL / FL DRIVE
KEY4
KEY1
5
8
32 98 10
VP
DC DET
35
/RESET
Q601
VOL OUT
Reser
drive
KEY SW
E
Spis schematów
(for GC, GCS, GT,GH only)(for GC, GCS, GT,GH only)
6)
AMP 1(2)
_
+
18
(25)
+
16
(27)
FIN
AMP 1(2)
+
_
19
(24)
VR601
(MIC)
M51131L-702
I C 303
ELECTRONIC
VOLUME
20
(23)
BA4558FDXT1
Q305(306),Q309
Muting
control
MUTEA
/V BASS
VOLATT
Q301,303(302,304)
Switching
(V.BASS)
Attenuator
Q308
Attenuator
control
14
(2)
Q404
Regulator
I C 305
VCA cont.
VCA
+B9
8
10
13
(3)
7,9,111
Butter
amp.
Q503,506
D409
Over load
det.
Q605, Q606
TA2011S
10
(14)
11
(13)
9
Buffer
I C 602
Muting
3
VR602
MIC
amp.
RSN3502
I C 501
POWER AMP
NF
_
+
Detection
Power
on/off
Bias
7
2
+
+B1
+B1
Echo
I C 604
M65843FPE1
Q607
Buffer
(for GC, GCS, GT,GH only)(for GC, GCS, GT,GH only)
4
(1)
6
8
HEADPHONES
SPEAKERS
(6 )W
+
_
MIC 1
MIC 2
Lch
1
P CONT
+
Q401
Switching
C
Q402
+B2
+B1
LM2940T5ML M 2 9 4 0 T 5 M
+B7
+B6
+B8
33
/HALT
34
+B4
+B5
NOTE: FMSIGNAL LINE AM SIGNAL LINE CD SIGNAL LINE RECORDING SIGNAL LINE
FM O S C SIGNAL LINE AM O S C SIGNAL LINE C D G SIGNAL LINE PLAYBACK SIGNAL LINE
D401
I C 401
Regulator
ELEKTRONIKI
Q405,409
D402
Power
supply control
Q404
Regulator
Regulator
+B3
Q410
Regulator
Q403
+B9
Power
supply
+B1
Q505
+B1
Q502,504
Regulator
Regulator
Q407
P down
det.
Q507
Regulator
D503-506
Q501
Relay
drive
D501,502
D407
TO
FL DISPLAY
MIC SIGNAL
RLY501
T501
POWER TRANSFORMER
F1
Volt
Selector
VR 1
AC
IN
SERWIS ELEKTRONIKI
Baza Porad Serwisowych Baza Porad Serwisowych Baza Porad Serwisowych
Spis schematów
A
Zestaw audio Panasonic SA-CH74
Schematic Diagram
(All schematic diagrams may be modified at any time with the development of new technology)
Note :
< for Sensor Circuit, Operation Circuit and Operation (Power) circuit > (Page 29)
S601
S602
S603
S604
S605
S606
S608
S609
S611
S612
S613
S614
S615
S616
S617
S618
S620
S621
S622
: Power switch
: Timer Play switch
: Timer Record switch
: Random switch
: Repeat switch
: Easy Edit switch
: Clock/Timer switch
: EQ. Space switch
: V. Bass switch
: EQ. Space Down switch
: EQ. Space Up switch
: EQ. Space Left switch
: EQ. Space Right switch
: Karaoke switch
: REW/Down switch
: FF/Up switch
: Stop switch
: Reverse Play switch
: Forward Play switch
< for Servo circuit > (Page 30 - 31)
S623
S624
S625
S626
S627
S628
S629
S631
S632
S633
S634
S635
S636
S637
S638
S639
S640
S641
S642
: Eject Deck 1 switch
: Tape Edit Normal switch
: Tape Edit High switch
: Record switch
: Reverse Mode switch
: Eject Deck 2 switch
: DOLBY NR switch
: CD Open/Close switch
: CD Dics Check switch
: CD Disc 5 switch
: CD Disc 4 switch
: CD Disc 3 switch
: CD Disc 2 switch
: CD Disc 1 switch
: Display/Demo switch
: AUX switch
: Tuner switch
: CD switch
: Deck 1/2 switch
OPERATION (POWER) CIRCUIT
I
I
S806
MOTOR
(DECK1)
S605
F/R
(DECK2)
S604
PLAY
(DECK2)
S603
REC
(DECK1)
S602
F/R
(DECK1)
S601
PLAY
(DECK1)
H603B
I
8.8K
R698
R697
4.7K
R696
2.7K
R695
2.2K
R694
1.8K
1
2
3
K1A
VREF-
GUARD
B
H
SENSOR CIRCUIT
S638
DISP/DEMO
S637
DISC 1
S636
DISC 2
S635
DISC 3
S634
DISC 4
S633
DISC 5
S632
DISC CHECK
S631
OPEN/CLOSE
H602B
H
R728
R727
R726
R725
R724
R723
R722
4.7K
2.7K
2.2K
1.8K
1.2K
1K
1K
6
K44
Z601
3
2
1
4
5
2
3
1
K4
RMT
GND
VREF-
VREF+
S701 : Reset switch
H603A
< for Tuner circuit and Tuner Pack circuit > (Page 32 - 35)
< for Panel circuit and LED circuit > (Page 36 - 38)
VR601
VR602
VR603
: Mic control
: Echo control
: Volume control
R709 R708 R707 R706 R705 R704 R703 R702 R701 R700
22K 10K 6.8K 4.7K 2.7K 2.2K 1.8K 1.2K 1K 1K
< for Main circuit > (Page 39 - 41)
< for Deck circuit, Mechanism (Deck 1) circuit and Mechanism (Deck 2) circuit > (Page 42-44)
S951
1 1
S952
S953
S971
S972
S973
S974
: Deck 1 Mode detect switch.
: Deck 1 Tape detect switch.
: Deck 1 CrO detect switch.
: Deck 2 Mode detect switch.
2
: Deck 2 Tape detect switch.
: Deck 2 CrO detect switch.
: Deck 2 Record detect switch.
2
S975
VR101
VR102
VR103
VR104
VR201
: Deck 2 Record detect switch.
: Deck 1 Lch playback gain adjustment VR (DOLBY).
: Deck 1 Rch playback gain adjustment VR (DOLBY).
: Deck 2 Lch playback gain adjustment VR (DOLBY).
: Deck 2 Rch playback gain adjustment VR (DOLBY).
: Deck 2 Normal speed adjustment.
S618
FF/UP
R721 R720 R719 R718 R717 R716 R715 R714 R713 R712 R711
68K 22K 10K 6.8K 4.7K 2.7K 2.2K 1.8K 1.2K 1K 1K
S629
< for Power circuit and Transformer circuit > (Page 45 - 46)
< for Loading Motor circuit, Detecting Switch (1) circuit and Detecting Switch (2) circuit > (Page 46)
S1
S2
S3
Signal line
The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the
basis of chassis.
Accordingly, there may arise some error in voltage values and waveforms depending upon the internal impedance of the tester or the measuring unit.
No mark :
Importance safety notice:
Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of
fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc.are used. When replacing any of components, be sure
to use only manufacturer’s specified parts shown in the parts list.
Caution!
IC, LSI and VLSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminium foil. Ground the soldering iron.
: Stocker position switch.
: Play position switch.
: Up position switch.
: + B line
S4
S5
S502
: Tray open switch.
: Disc number switch.
: Voltage selector switch.
: Playback signal line
ELEKTRONIKI
: -B line
: FM/Am signal line
: Main signal line
Playback << >>......Rec { } : Tuner (( )):CD ( ).....AM < > .....FM
!
: Record signal line
: CD signal line
: FM signal line
: AM signal line
: AM OSC signal line
: FM OSC signal line
: Aux signal line
FOR GC.GCS.
GT.GH ONLY
JK 603
MIC 2
602
JK
MIC 1
JK601
HEADPHONE
NO.022
R748
680
R747
680
C698
Z0,01
1
2
4
5
1
2
4
5
C694
5
4
3
2
7
6
1
K1A
3
S616
KARA
S617
REW/DWN
S628
DECK2
OPEN
DOLBY NR
Q613
BN1A4MTA
LED DRIVE
VREF-
GUARD
1
2
S615
EQ SPACE
S627
REV MODE
R733
820
D627 SLR - 325MC
S614
EQ SPACE
S625
S626
REC START
BU2090F - E2
IQ EXPANDER
R734
820
D628
S613
EQ SPACE
TAPE EDIT
IC 605
8
9
SLR - 325MC
11.2V
S612
EQ SPACE
S624
NOREDIT
0.5V
7
LED_ST
LED_PU
LED_KEY
LED_AUX
10
Q613
S642
DECK1/2
S611
S623
DECK1
0V
11
R732
68K
S641
V.BASS
OPEN
0V
LED_RP
LED_FP
12
0V
11.2V
H602A
R731
22K
GC
S640
TUNER
S608
S609
EQ SPACE
S622
FWD PLAY
5.6V
56
CH_REW
LED_TP
8.3V
S620
S621
REV PLAY
5.6V
3
4
CLK
IC 605
CH_FWD
LED_TU
LED_CD
13
14
0.6V0.7V
R765 R763 R761 R759
82 82
R766 R764 R762 R760
82
82 82
R730
10K
S639
AUX
TIMER/CLK
STOP
0V
2
15
0V0V
D629
R729
6.8K
C678
K560P
0V
DATA
LED_CTL
16
0V
1
0V
GND
VCC
R737
R797 1K
R796
D651
820
VREF+
K44
K4
VREF-
4
5
3
6
1K
C677
K560P
C679
Z0.1
D629,D630,D632
D631,D651,D652
SLR - 325MC
D631
D832
R738
430
82
D852
82
82
RMT
2
GND
1
R790
1.2K
R800
580
R789
R788
1K
1K
CN601
KEY4
1
KEY3
2
KEY2
3
KEY1
4
ISDATA/KCLK
5
CHGCONT1
6
DGND
7
CHGCONT2
8
RMT
9
CN602
DICLK
1
LED CTL
2
VREF-
3
VREF-
4
CLT+B
5
VREF+
6
H504
7
8
9
1
2
3
4
5
5V
MICIN
AGND
AMP-R
AMP-L
GND
SP-R
SP-L
D659 SS254TA
D630
E
TO
PANEL
CIRCUIT
(CP601)
(PAGE36)
E
TO
PANEL
CIRCUIT
(CP602)
(PAGE36)
K
TO
POWER
CIRCUIT
(CN504)
(PAGE45)
E
K
K
Put a conductive mat on the work table. Do not touch the pins of IC, LSI or VLSI with fingers directly.
G
G
OPERATION CIRCUIT
SERVO CIRCUIT
A
OPTICAL PICKUP
0.1
K68OP
K68OP
K0.047
VCC
1
PDF
2
PDE
3
LD
4
GND
5
GND
6
NB
7
GND
8
NA
9
VREF
10
LPD
11
GND
12
T+
13
T-
14
F+
15
F-
16
1K
8
3
LD
11
12
7
10
5
4
9
6
4
2
3
1
NBOUT GND
GND VCC
NAOUT BIN
VREF AIN
5
678
2 2
TRACKING
COIL
FOCUS
COIL
M702
SPINDLE
MOTOR
M701
TRAVERSE
MOTOR
M
M
Q701
2SB709S
LASER POWER
DRIVE
CN701
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C751
M.01
DCB A
TP36
TP35
Tp38
Tp37
A
B
C
D
E
C713
A
C737
B
C
C736
D
M0.1
M0.1
M0.1
Q701
((4.9V))
((2.9V))
STOP:((1.3V))
R752 22
IC703
AN8389SE1
FOCUS COL / TRACKING COIL /
TRAVERSE MOTOR /
SPINDLE MOTOR DRIVE
C712
M.01
C711
M.01
TP71
(VREF)
R701
4.7
((3.4V))
((4.5V)):STOP
C701
R771 1.5M
C
E
D
((2.5V))
+
6.3V33
1
TP70
((2.5V))
2
((5V))
3
((2.5V))
((4.5V)) STOP
4
C703
((3.4V))
5
6.3V100
TP29
((2.6V))
6
C704
M0.1
PLAY
0.5us.0.2V/DIV
C702
M0.1
((2.6V))
7
RF
2VP-P
C705
M0.1
((3.6V))
8
(ARF)
C706
((1.6V))
910
TP30
K270OP
((3.4V))
C707 K0.027
((3V))
11
C716
K56OP
AN8835SBE1
SERVO AMP
A
B
((0V))
((4.9V))
((0V)) STOP
13
12
IC701
((0V))
14
IC701
PDF PDA
PDE PDB
VREF VCC
FBAL LPD
TBAL LD
FE
TE RFIN
CCRS CAGC
TEBPF ARF
ENV CSBRT
VDET CEA
OFTR BDD
CROSS LDON
D4+
16
((4.9V))
((0V))
23
PGND2
VREF
2
((2.5V))
R728 10K
\RFDET GND
15
((0V))
((4.9V)) STOP
C709 K0.047
C742 K0.027
C710
R772 273
((8V))
24
PVCC2
VCC
1
((8V))
R736
100
C752
K1500P
23 22
24
((2.5V))
R706
TP34
R744
((8V))
13
12 11
((0V))
R723 1.8K
8,2K
HC FE J D CBA
((2.5V))
((2.5V))
1K
10K
CDBA BA DC
((0V))
((0V))
((0V))
16
14
15
((4.8V)):STOP
PC1 PVCC1
IN1 PGND1
PC2 D1-
10
((0V))
((2.5V))
((2.5V))
R735 100
R724 33K
R725 4.7K
((2.5V))
TP40
+
26
R707
C735
((2.5V))
TP33
470K
PLAY
0.3Vp-p
M0,1
25
28
27
((2.5V))
A
B
TP41
R770 1.5M
((2.5V))
TP39
R708
150K
TP42
KJI H GFEDC
Zms.0.1V/DIV
C734
10V220
IC703
R722 56K
R731
I
20
21
((2.5V))
((2.5V))
C749
M.01
C708 K470OP
R703
82K
TP31
R704
1K
TP32
R705
10K
((0.5V))
((0V))
18
17
IN2 D1+
GND D2-
NRESET D2+
98 7
((0V))
((4.9V))
R734 100
((0.5V))
19
D3-
NC
6
((0V))
C738
K0.15
R748
1.8K
19
((2.5V))
((2.5V))
((0V))
20
((0V)):STOP
GND D3+
5
((0V))
R727
R726 47K
R749
18
((0.5V))
21
4
((2.5V))
8.2K
6.8K
((0V))
IN3 D4-
17
((1V))
22
IN4
3
((2.5V))
2ms.0.2v/DIV
C748 K47OP
K18OOP
C747 K22OOP
TP28
+
PLAY
0.4V
p-p
C714
6.3V100
TP16
C722
J15P
X701
C721
J15P
R711
R709 68K
R745 1.5M
C744 K8200P
2ms.0.2V/DIV
R721
100
((2.5V))
73
OUTL
AVDD1
FOD
28
((2.5V))
TP11
R741 5.6K
11
SENSE
PLAY
1KHz.OdB
((0V))
((2.5V))
75
74
AVSS1
OUTR
PLAY
T=13.6mS
PLAY
T=13.6mS
PLAY
PLAY
TRD
KICK
26
27
((2.5V))
((2.5V))
TP12
12
MLD
((4.9V))
76
RSEL
F=75Hz
T=13.6mS
ECS
25
((2.5V))
TP13
R742 5.6K
13
MDATA
+
C730
M0.1
C731
6.3V220
C754
K470P
C724
M0.1
C723
CLVS
3Vp-p
2VP-P
P-P
VDET
((2.5V))
7
SQCK
10V220
67 68
((5V))
69
70
RESY
CRC
RFENV
/RST2
DEMPH
FE
TBAL
TE
32
3334
((2.5V))
((2.5V))
((2.5V))
TP8
8
9
BLKCK
/TLOCK
TO PANEL CIRCUIT
E
((5V))
((4.9V))
71
72
/TEST
FBAL
3031
29
((2.5V))
((2.5V))
TP10
10
/FLOCK
(CN605)
(PAGE 38)
VREF
4.4Vp-p
F=16.934MHz
((5V))
((2.4V))
((2.4V))
((0V))
150K
C717 M0.1
PLAY
0.4V
p-p
((2.4V))
((1.4V))
R712
220
((2.4V))
C718
K0.22
((4.9V))
((0V)):STOP
R750
47K
A BCDEF GHI J KA BCDE FGHI J
S701
(REST)
CN702
((0V))
((0V))
((5V))
((2V))
R751
47k
TP1
1
REST SW
VDD
60
59
X2
X1
58
57
VSS
SBCK
56
55
SUBC
PDO
54
53
PCK
52
EFM
51
AVSS2
AVDD2
50
49
VCOF
PLLF
48
DSLF
47
46
45
44
43
42
41
TP2
2
SMCK
TP24 TP25 TP26 TP27
66
65
63
62
BYTCK
64
FCLK
/CLDCK
FLAG
IPFLAG
61
ELEKTRONIKI
F=16.934MHz
IC702
IC702
MN662741RPA
SERVO PROCESSOR / DIGITAL
SIGNAL PROCESSOR / DIGITAL
FILTER / D/A CONVERTER
DRF
IREF
ARF
WVEL
PLAY
TES
((0V)):STOP
PLAY
0.5us.0.2V/DIV
/RFDET
39
((0V))
4
STAT
BDO
38
((0V))
TP4
TRCRS
37
((4.9V))
TP5 TP7 TP9TP6
5
DMUTE
OFT
36
((0V))
6
SUBQ
35
((0V))
LDON
40
((4.9V))
((4.9V)):STOP
MLKJ I HGF E DCB A
TP3
3
/RST
R717
1K
R718
1K
((0V))
((0V))
7877
CSEL
ECM
23
24
((0V))
((2.5V))
TP14
R743 5.6K
14
MCLK
4Vp-p
PSEL
PC
TP15
15
C725
C726
((5V))
((0V))
80
79
MSEL
5V
0V
5V
0V
5V
0V
5V
0V
TVD
22
21
((2.5V))
((2.5V))
C753
K470P
C743
M0.1
PGND
+B(1)
R719
1K
K1000P
K1000P
BCLK
SSEL
LRCK
SRDATA
DVDD1
DVSS1
TX
MCLK
MDATA
MLD
SENSE
/FLOCK
/TLOCK
BLKCK
SQCK
SUBQ
DMUTE
STAT
/RST
SMCK
PMCK
TRV
2ms.0.2V/DIV
16
17
TX
C727
50V1
+
C728
R720
50V1
1K
+
1
2
3
((5V))
4
((0V))
5
((2.2V))
6
((4.3V))
7
((4.9V))
8
((4.9V))
9
((0V))
10
((0V))
11
((0.1V))
12
((0V))
13
((4.9V))
14
((4.6V))
15
((0V))
16
((4.5V))
17
((4.9V))
18
19
20
((4.8V)):STOP
TP17
TP19
18 19
LD SW
PLAY
0.3V
p-p
DGND
TP23
TP21
((0V)):STOP
((4.9V)):STOP
((0V)):STOP
((0V)):STOP
((0V)):STOP
20
OUT
+B(2)
RCH
R738
PLAY
C745
21
A
B
+
C732
6.3V220
22K
T=13.6mS
M0.047
TP22
22
AGND
A
B
C
D
E
F
G
H
I
J
K
L
M
23
OUT
LCH
C733
TP18
M0.1
TP20
5V
0V
B
A
SERWIS ELEKTRONIKI SERWIS ELEKTRONIKI SERWIS ELEKTRONIKI
A
B
Baza Porad Serwisowych Baza Porad Ser
Spis schematów
A
Zestaw audio Panasonic SA-CH74
Schematic Diagram
(All schematic diagrams may be modified at any time with the development of new technology)
Note :
< for Sensor Circuit, Operation Circuit and Operation (Power) circuit > (Page 29)
S601
S602
S603
S604
S605
S606
S608
S609
S611
S612
S613
S614
S615
S616
S617
S618
S620
S621
S622
: Power switch
: Timer Play switch
: Timer Record switch
: Random switch
: Repeat switch
: Easy Edit switch
: Clock/Timer switch
: EQ. Space switch
: V. Bass switch
: EQ. Space Down switch
: EQ. Space Up switch
: EQ. Space Left switch
: EQ. Space Right switch
: Karaoke switch
: REW/Down switch
: FF/Up switch
: Stop switch
: Reverse Play switch
: Forward Play switch
< for Servo circuit > (Page 30 - 31)
S623
S624
S625
S626
S627
S628
S629
S631
S632
S633
S634
S635
S636
S637
S638
S639
S640
S641
S642
: Eject Deck 1 switch
: Tape Edit Normal switch
: Tape Edit High switch
: Record switch
: Reverse Mode switch
: Eject Deck 2 switch
: DOLBY NR switch
: CD Open/Close switch
: CD Dics Check switch
: CD Disc 5 switch
: CD Disc 4 switch
: CD Disc 3 switch
: CD Disc 2 switch
: CD Disc 1 switch
: Display/Demo switch
: AUX switch
: Tuner switch
: CD switch
: Deck 1/2 switch
S701 : Reset switch
< for Tuner circuit and Tuner Pack circuit > (Page 32 - 35)
< for Panel circuit and LED circuit > (Page 36 - 38)
VR601
VR602
VR603
: Mic control
: Echo control
: Volume control
< for Main circuit > (Page 39 - 41)
< for Deck circuit, Mechanism (Deck 1) circuit and Mechanism (Deck 2) circuit > (Page 42-44)
1
S951
S952
S953
S971
S972
S973
S974
: Deck 1 Mode detect switch.
: Deck 1 Tape detect switch.
: Deck 1 CrO detect switch.
: Deck 2 Mode detect switch.
: Deck 2 Tape detect switch.
: Deck 2 CrO detect switch.
: Deck 2 Record detect switch.
2
2
S975
VR101
VR102
VR103
VR104
VR201
: Deck 2 Record detect switch.
: Deck 1 Lch playback gain adjustment VR (DOLBY).
: Deck 1 Rch playback gain adjustment VR (DOLBY).
: Deck 2 Lch playback gain adjustment VR (DOLBY).
: Deck 2 Rch playback gain adjustment VR (DOLBY).
: Deck 2 Normal speed adjustment.
< for Power circuit and Transformer circuit > (Page 45 - 46)
< for Loading Motor circuit, Detecting Switch (1) circuit and Detecting Switch (2) circuit > (Page 46)
S1
S2
S3
Signal line
: Stocker position switch.
: Play position switch.
: Up position switch.
: + B line
S4
S5
S502
: Tray open switch.
: Disc number switch.
: Voltage selector switch.
: Playback signal line
ELEKTRONIKI
: -B line
: Record signal line
: AM signal line
: AM OSC signal line
: FM/Am signal line
: Main signal line
The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the
basis of chassis.
Accordingly, there may arise some error in voltage values and waveforms depending upon the internal impedance of the tester or the measuring unit.
No mark :
Importance safety notice:
Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of
fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc.are used. When replacing any of components, be sure
to use only manufacturer’s specified parts shown in the parts list.
Caution!
IC, LSI and VLSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminium foil. Ground the soldering iron.
Put a conductive mat on the work table. Do not touch the pins of IC, LSI or VLSI with fingers directly.
Playback << >>......Rec { } : Tuner (( )):CD ( ).....AM < > .....FM
!
: CD signal line
: FM signal line
: FM OSC signal line
: Aux signal line
Serwisowych Baza Porad Serwisowych
Spis schematów
B
OPERATION (POWER) CIRCUIT
I
I
S806
MOTOR
(DECK1)
S605
F/R
(DECK2)
S604
PLAY
(DECK2)
S603
REC
(DECK1)
S602
F/R
(DECK1)
S601
PLAY
(DECK1)
I
8.8K
R698
R697
4.7K
R696
2.7K
R695
2.2K
R694
1.8K
H
SENSOR CIRCUIT
S638
DISP/DEMO
S637
DISC 1
S636
DISC 2
S635
DISC 3
S634
DISC 4
S633
DISC 5
S632
DISC CHECK
S631
OPEN/CLOSE
R728
R727
R726
R725
R724
R723
R722
H
4.7K
2.7K
2.2K
1.8K
1.2K
1K
1K
3
Z601
2
1
H603B
H603A
R709 R708 R707 R706 R705 R704 R703 R702 R701 R700
22K 10K 6.8K 4.7K 2.7K 2.2K 1.8K 1.2K 1K 1K
S616
S617
REW/DWN
S629
DOLBY NR
S628
DECK2
Q613
KARA
S618
FF/UP
R721 R720 R719 R718 R717 R716 R715 R714 R713 R712 R711
68K 22K 10K 6.8K 4.7K 2.7K 2.2K 1.8K 1.2K 1K 1K
BN1A4MTA
LED DRIVE
K1A
3
OPEN
2
3
K1A
GUARD
VREF-
GUARD
1
2
S615
EQ SPACE
S627
REV MODE
1
VREF-
S614
EQ SPACE
S625
S626
REC START
BU2090F - E2
IQ EXPANDER
S613
EQ SPACE
TAPE EDIT
IC 605
S612
EQ SPACE
S624
NOREDIT
S642
DECK1/2
S623
S611
V.BASS
DECK1
OPEN
R732
68K
S641
S622
GC
R731
22K
S640
TUNER
S609
EQ SPACE
S620
S621
FWD PLAY
REV PLAY
R730
10K
S639
S608
TIMER/CLK
STOP
AUX
C678
K560P
H602A
R729
6.8K
H602B
K44
6
R797 1K
R796
C677
6
K44
K4
5
K560P
5
K4
VREF-
4
1K
4
VREF-
VREF+
RMT
2
3
2
3
RMT
VREF+
GND
1
R790
1.2K
1
GND
R789
1K
R788
1K
CN601
1
2
3
4
6
7
8
9
KEY4
KEY3
KEY2
KEY1
ISDATA/KCLK
5
CHGCONT1
DGND
CHGCONT2
RMT
E
TO
PANEL
CIRCUIT
(CP601)
(PAGE36)
1
FOR GC.GCS.
GT.GH ONLY
JK 603
MIC 2
1
2
4
5
1
2
4
5
602
JK
MIC 1
JK601
HEADPHONE
G
C694
NO.022
5
4
3
2
7
6
1
OPERATION CIRCUIT
G
R748
680
R747
680
C698
Z0,01
R733
820
D627 SLR - 325MC
R734
820
D628
8
9
SLR - 325MC
11.2V
0.5V
7
LED_ST
LED_PU
LED_KEY
LED_AUX
10
Q613
0V
LED_RP
LED_FP
11
0V
5.6V
5.6V
0V
56
CH_REW
LED_TP
12
13
8.3V
11.2V
R765 R763 R761 R759
R766 R764 R762 R760
0V
3
4
CH_FWD
LED_CD
0.6V0.7V
82 82
82
2
CLK
IC 605
LED_TU
15
14
0V0V
D629
82 82
0V
DATA
LED_CTL
16
0V
1
GND
VCC
R737
0V
D651
820
C679
Z0.1
D629,D630,D632
D631,D651,D652
SLR - 325MC
D631
D832
R738
430
82
D852
82
82
R800
580
CN602
DICLK
1
LED CTL
2
VREF-
3
VREF-
4
CLT+B
5
VREF+
6
H504
7
8
9
1
2
3
4
5
5V
MICIN
AGND
AMP-R
AMP-L
GND
SP-R
SP-L
D659 SS254TA
D630
E
TO
PANEL
CIRCUIT
(CP602)
(PAGE36)
K
TO
POWER
CIRCUIT
(CN504)
(PAGE45)
E
K
K
Loading...