DOWNLOAD Panasonic SA-VK870GC / SA-VK870GCS / SA-VK870GS Service Manual ↓ Size: 14.81 MB | Pages: 127 in PDF or view online for FREE

Model
SA-VK870GC SA-VK870GCS SA-VK870GS
Pages
127
Size
14.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / DVD STEREO SYSTEM
File
sa-vk870gc-sa-vk870gcs-sa-vk870gs.pdf
Date
PREV: Panasonic SA-VK870EE / SC-VK870EE Service Manual

Panasonic SA-VK870GC / SA-VK870GCS / SA-VK870GS Service Manual ▷ View online

18.7. Digital Audio Amp
: MAIN SIGNAL LINE
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR
MANAGER
STABI
RELEASE1
RELEASE2
SWITCH1
SWITCH2
ENABLE1
ENABLE2
MUTE
MUTE
MODE
2
3
STABI
PROT
VDDP2
VSSP2
VDDP1
VSSP1
BOOT1
BOOT2
OUT1
SL+
SR+
OUT2
IC5400
C1BA00000487
AUDIO DIGITAL POWER AMP
5
19
23
1
21
22
9
10
15
14
13
11
8
16
12
7
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR
MANAGER
STABI
RELEASE1
RELEASE2
SWITCH1
SWITCH2
ENABLE1
ENABLE2
MUTE
MUTE
MODE
2
3
STABI
PROT
VDDP2
VSSP2
VDDP1
VSSP1
BOOT1
BOOT2
OUT1
FL+
FR +
OUT2
IC5000
C1BA00000487
AUDIO DIGITAL POWER AMP
5
19
23
1
21
22
9
10
15
14
13
11
8
16
12
7
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR
MANAGER
STABI
RELEASE1
RELEASE2
SWITCH1
SWITCH2
ENABLE1
ENABLE2
MUTE
MUTE
MODE
2
3
STABI
PROT
VDDP2
VSSP2
VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5200
C1BA00000487
AUDIO DIGITAL POWER AMP
5
19
23
1
21
22
9
10
15
14
13
11
8
16
12
7
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR
MANAGER
STABI
RELEASE1
RELEASE2
SWITCH1
SWITCH2
ENABLE1
ENABLE2
MUTE
MUTE
MODE
2
STABI
PROT
VDDP2
VSSP2
VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5300
C1BA00000487
AUDIO DIGITAL POWER AMP
5
19
23
1
21
22
9
10
15
14
13
11
8
16
12
7
CENTER
C +
C -
MODE 1
SUBWOOFER
SW -
SW +
MODE 2
SURROUND R
FRONT R
MUTE S C
MUTE F SW
MOD DA
CENTER
SUBWOOFER
FL +
FR +
+
-
+
-
+
-
+
-
IC5500
INVERTER GATE 
(CLOCK GENERATOR)
C0JBAB000902 
X5500
X5501
D5501
D-TYPE FLIP-FLOP
C0JBAF000716 
CP1
O1
IC5501
6
8
10
9
14
14
11
3
D1
5
4
6
O1
2
1
5
4
3
2
1
CD1
SD1
MUTING
CIRCUIT
Q5601,Q5602
Q5603,Q5604
MODE 1
MODE 2
CENTER
SUBWOOFER
FRONT L
FRONT R
SPEAKERS
SA-VK870GC/GCS/GS  DIGITAL AUDIO AMP BLOCK DIAGRAM
DC DET
DC DETECT
Q5101,Q5102
3
FROM AUDIO
FROM AUDIO
FROM 
SYSTEM CONTROL
FROM/TO 
SYSTEM CONTROL
- 30V SENSE
- 30V SENSE
- 30V SENSE
- 30V SENSE
+ 30V SENSE
+ 30V SENSE
- 30V SENSE
- 30V SENSE
+ 30V SENSE
- 30V SENSE
- 30V SENSE
+ 30V SENSE
FHOP
10
JK5001
6
JK5001
5
JK5001
8
JK5001
7
JK5001
SL +
SR +
+
-
+
-
SURROUND L
SURROUND R
2
JK5001
1
JK5001
4
JK5001
3
JK5001
9
JK5001
12
JK5001
11
JK5001
D5502
SW+5V
SW+5V
15
3
CN2808 CN5050
FRONT L
17
1
CN2808 CN5050
6
12
CN2808 CN5050
5
13
CN2808 CN5050
1
17
CN2808 CN5050
9
CN2808 CN5050
SURROUND L
CN2808 CN5050
7
11
CN2808 CN5050
13
5
11
7
CN2808 CN5050
4
14
CN2808 CN5050
2
16
CN2808 CN5050
SA-VK870GC / SA-VK870GCS / SA-VK870GS
101
18.8. Power
VOLTAGE SELECTOR
S5701
+
_
D5804
D5803
D5805
MAIN 
TRANSFORMER
D5801
T5701
D5802
Q5898
T5751
D5896
D5798
D2000
D2001
PC5799
D5701
L5702
L5701
DZ5701
FOR GC ONLY
FOR GC ONLY
FOR GC ONLY
FOR GCS/GS ONLY
FOR GCS/GS ONLY
FOR GCS/GS ONLY
FOR GCS/GS ONLY
FOR GCS/GS ONLY
SA-VK870GC/GCS/GS POWER BLOCK DIAGRAM
C0CBCBD00018
SYSTEM CONTROL
FROM/TO
SYSTEM CONTROL
TO
SYSTEM CONTROL
FROM
+1.2V  REGULATOR
C0DBEHG00006 
POWER CONTROL
QR8111
+3.3V DC-DC
CONVERTER
CONT
Q5860,Q5861,Q5862
TRANSFORMER
TEMP. DETECT
C0DAAYY00042
SWITCHING 
REGULATOR
SWITCHING 
REGULATOR
C0DAAMH00012
OUT
VCC 1
2
OUT
VCC 1
2
3
1
2
Q5720,
Q5722
CURRENT
LIMITING
SWITCH
Q5721
SWITCHING
F1
AC INLET
P5701
SWITCHING 
REGULATOR
C5HACYY00003
VCC
D
FB
4
1
6
FEED BACK
BACKUP 
TRANSFORMER
PC5701
FEED BACK
FEED BACK
FEED BACK CIRCUIT
D
VCC
FB
IC5799
SWITCHING 
REGULATOR
MIP4110MSSCF 
IC4001
C0DAEMZ00001
SHUNT
REGULATOR
IC5899
IC4000
IC8151
IC8111
IC5701
QR5810
PC5702
PC5720
SYNC
SWITCH
SHUNT 
REGULATOR
IC5801
Q5802, D5806
C0DABFC00002
TH5860
-7V 
REGULATOR
Q4002
OUT
VCC 2
4
VO
VIN 8
1
5
QR5801
DC DETECT
Q4007
M+9V
REGULATOR
+9V
REGULATOR
Q4004
+7V
REGULATOR
Q4003
POWER
CONTROL
Q2810
SW+5V
REGULATOR
Q5100
CD+7.5V
POWER SUPPLY
Q4008
Q4001
QR4004
DC DETECT
DC DETECT
Q4000
D+2.7V REGULATOR
M+9V 
M+9V 
SW+5V
DVD PCONT
VCC
DC DET
+9V 
-7V 
DVD+5V
D+3.3V
D+5V
D+5V
+7V
NSW1.2V
3, 4
H5801
7, 8
H5801
5
CN5802
CN2701
8, 9
CN5802
CN2701
- 30V SENSE
- 13V
DC18V
DCDET
+ 30V SENSE
32, 34
19, 17
CN2801
FP8101
13, 23, 25, 27
FP8101
38, 28, 26, 24
CN2801
SYS6V
PCONT
SYNC
TN2802
9
11
40
CN2801
FP8101
D+5V
ADAC5V
D+2.5V
CD+7.5V
VREF
SYS6V
DVREF
SYSTEM CONTROL
FROM/TO
+ 30V SENSE
- 30V SENSE
ADAC5V
+ 18V
4
CN5802
CN2701
1
CN5802
CN2701
2
CN5802
CN2701
48,46
15,13
CN2801
FP8101
CD+7.5V
1
CN2805
CN2
11
CN5802
CN2701
10
CN5802
CN2701
CN5500
CN5500
Q5803
SWITCHING
AMBP
5
4
2
3
2
6
7
5
2
8
4
7
18
15
17
11
14
3
CL
L5703
QR5802
DC DETECT
TH5702
OP-AMP
C0ABBA000168  
Q5750
D5795
IC5780
7
5
6
TH5701
Q2701
Q2702
D2700
Q2700
POWER
CONTROL
POWER
SUPPLY
POWER
SUPPLY
SA-VK870GC / SA-VK870GCS / SA-VK870GS
102
19 Schematic Diagram Notes
     • 
• 
• 
• 
This schematic diagram may be modified at any time
with the development of new technology.
Notes:
S971:
Mode Switch.
S972:
Half Switch.
S974:
RECINH_R Switch.
S975:
RECINH_F Switch.
S5701:
Voltage Selector Switch. (For GCS/GS)
S6100:
Power (
) Switch.
S6101:
Display Switch.
S6103:
Surround Enhancer Switch.
S6104:
Subwoofer Switch.
S6106:
Tape Rec (
) Switch.
S6108:
H.Bass Switch.
S6201:
Open/Close (
) Switch.
S6202:
Exchange (
) Switch.
S6203:
Disc 1 (
) Switch.
S6204:
Disc 2 (
) Switch.
S6205:
Disc 3 (
) Switch.
S6206:
Disc 4 (
) Switch.
S6207:
Disc 5 (
) Switch.
S6208:
Stop/-Demo (
STOP/DEMO)
Switch.
S6300:
/Forward (
) Switch.
S6301:
Manual EQ Switch.
S6302:
/Rewind (
) Switch.
S6303:
Tape (
) Switch.
S6304:
FM/AM Switch.
S6306:
DVD/CD Switch.
S6307:
USB (USB
) Switch.
S6308:
EXT-IN Switch.
S6820:
Open (
) Switch.
VR6001:
Mic Volume Jog.
VR6500:
Volume Jog.
VR6630:
Bass Control Jog.
     • 
• 
• 
• 
Important 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.
     • 
• 
• 
• 
In case of AC rated voltage Capacitor, the part no. and
values will be indicated in the Schematic Diagram.
AC rated voltage capacitor:
C5700, C5701, C5703, C5704, C5705, C5706, C5707,
     • 
• 
• 
• 
Resistor
Unit of resistance is OHM [
Ω
] (K=1,000, M=1,000,000).
     • 
• 
• 
• 
Capacitor
Unit of capacitance is µF, unless otherwise noted. F=Farad,
pF=Pico-Farad
     • 
• 
• 
• 
Coil
Unit of inductance is H, unless otherwise noted.
     • 
• 
• 
• 
*
For indication only.
     • 
• 
• 
• 
Test Pad
: Test Pad Position.
     • 
• 
• 
• 
Voltage and signal line
: +B signal line
: -B signal line
: USB signal line
: DVD RF /Tape Playback signal line
: Motor Drive /Tape Record signal line
: DVD Audio signal line
: DVD Video signal line
: CD Head signal line
: DVD Head signal line
: Main signal line
: Tracking Error signal line
: Focus Error signal line
: AM/FM signal line
: AUX /Mic /Music Port signal line
     • 
• 
• 
• 
GCS/GS only
     • 
• 
• 
• 
GC only
103
SA-VK870GC / SA-VK870GCS / SA-VK870GS
104
SA-VK870GC / SA-VK870GCS / SA-VK870GS
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