Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Audio SA-HT75 sch23_25
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SCHEMATIC DIAGRAM - 23
: +B SIGNAL LINE : -B SIGNAL LINE : DVD AUDIO SIGNAL LINE : MAIN SIGNAL LINE
MAIN CIRCUIT
1
MUTE_FLAG
2
6CHFL
HPSW
3
HPR
HPL
S.GND Q401,Q408 Q402-Q403
4 Q404,Q409
5
6CHFR
KRA111MTA B1AAGC000007 B1AAGC000007
TO 6CHSR CENTER FOCUS
SWITCH MUTING SWITCH R449 C415 C431
6 10 0.01 0.01
DSP CIRCUIT 6CHSL CONTROL SWITCH
C401
7 R401 C402 R409 R414 R450
(CN804) ON 6CHC 8.2K 16V10 50V3.3 3.3K 68K 10
8
SCHEMATIC 6CHSW R416
DIAGRAM-17 9 R412 3.3K C403 50V4.7
100K
MIXL 39
100
82K
1000P
C408
10
C414
0.01
R418
MIXR <0V> C410 C412
39
11
<0V> ((0V)) 100P 47P
D.GND <1.03V> R403
12
Q404 ((0V))
R406
R420
R402
((1.03V)) 1K Q401 Q402
((-7.92V))
CP804 IC401
<-7.95V>
<0.99V> <0.63V> <-3.42V> R407
R404 <0V>
1 16V10 ((-3.42V)) 1K M5218AP
C406
((0V))
((0V))
<0V>
<0V>
10K ((0.99V)) ((0.63V)) <0V> <0V>
2 ((0V)) ((0V)) DUAL OP AMP
((0V))
3 <0V> 4 3 2 1
TO S.GND ((0V)) VEE
1000P
4 Q406
C413
R415
DSP CIRCUIT S.GND <0V>
100K
C/L
39
(CN802) ON
5
+7.5V ((0V)) R408 IC401 KRA111MTA
6 1K MUTING
SCHEMATIC -7.5V R445 Q403 R CONTROL SWITCH
R417
7 2.2K <-3.42V>
39
DIAGRAM-17 D.GND <0.99V> R443 VCC
R405
R444 <0.64V> <0V> ((-3.42V))
8
D.GND 10K Q409 ((0.99V)) 1K ((0.64V)) <0V> ((0V)) 5 6 7 8
C411
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
9 ((0V)) <7.23V>
CF 1/2 <1.03V> 120P...EE
10 ((1.03V)) Q408
<0V>
((7.24V))
47P...E/EB/EG
MO9V
16V10
C432
CP802 ((0V))
100
<0V> R411
1 3.3K
ASPECT ((0V))
2 C409 C411
R433
R410 R432
68K
R421
3 C434 C405 3.3K 100P 68K
MIC 50V4.7 50V3.3
TO 4 Q405
MUTEA R419 C407 C404 R413 C416 C417
DSP CIRCUIT 5 KRA111MTA 150K 0.01 50V4.7 68K R426 16V10 50V3.3
(CN801) ON MUTE_SB 1K
6 VOLTAGE
R423
120K
SCHEMATIC 7 REGULATOR SWTCH
R427
<5.01V>
DGNDC3 ((5.01V))
DIAGRAM-17 8 Q405 R424 <7.86V> 12K
DSP_DCDET Q410 1K Q410 ((7.86V)) <-3.02V>
R425
9
2.7K
14.7V <-3.43V> <5.01V> R428 ((-3.03V))
10 KTC3199GRTA ((-3.42V)) ((5.01V))
<7.19V> 3.3K
R447
100K
SW5V SUPPLY SWITCH (7.5V) ((7.19V))
CP801 <7.19V> <4.92V> Q406
<4.92V> ((7.19V)) ((4.91V))
((4.91V))
1 R446
2 D401 C433 1K
VREF B0BA5R000004 10V100
3
MECHCS
4
MECHCK
5
MECHSO
6
MECHSI
7
MECHRQ
8
MECHRS
TO 9
SGND
PANEL 10
MIC_SW
CIRCUIT 11
SER5
(CN601) ON 12
PHONE_SW
SW5V
14.7V
MO9V
DSP_DCDET
DCDET
+7.5V
-7.5V
SCHEMATIC 13
MICVOL
DIAGRAM-22 14
DCDET
15
PCONT
16
SYNC
17
SYS6V
18 R565 D551
SER2 4.7K
19 B0AACK000004
SER1
20
-VP
21
FL2
22
FL1
B0AACK000004
CN901
D553
1 B0AACK000004
D552
2
R571
MIC
39K
3 R572 R570 R568 R567
DGNDC3 R589 22K 10K 220K
4
68K
TO 5
PHONE_SW 10K
HEADPHONE 6
MIC_SW
CIRCUIT <4.99V> <7.82V>
(CN604) ON
7
HPSW Q552 ((4.99V)) Q551 ((7.82V))
8 R569
SCHEMATIC 9
HPL KRC111MTA Q552
4.7K
DIAGRAM-21 HPGND DC DETECT SWITCH <-3.2V> <-3.19V> <7.87V>
<0V>
50V4.7
10 ((-3.19V)) ((-3.19V)) ((7.87V))
C551
HPR ((0V)) Q551
11
12
MICVOL 2SA733-T
SER5 DC DETECT SWITCH
13
SER1
14
SER2
CN902
MO9V
SW5V
14.7
CP703 Q555
1
2
KTC3199GRTA <5.03V>
MUTE_ZFLAG FAN CONTROL SWITCH R585 <0V> ((5.03V))
3 (FOR POWER FAILURE CONTROL) 56K ((0V))
4
6CHFL
<0V>
Q556
S.GND Q556 C553 <0V>
TO 5
6CHFR
((0V)) R584
6.3V220 ((0V))
DVDREG 6 KTC3199GRTA Q555
100
6.3V220
6CHSR DC DETECT SWITCH <0V>
C555
CIRCUIT 7
6CHSL <0V> ((0V))
(CN703 8 ((0V))
MA2C700A0F
6CHC
/CN704) ON 9
6CHSW
R583
R582
220K
R586
SCHEMATIC
D556
R575 18
10
MIXL 10K
DIAGRAM-18 11
MIXR C554
56K
12 16V33
MO9V
MA2C700A0F
1
DCIN
2
D557
P.GND-
R581
10K
3
FAN-
4
FAN+
CP704
1
MECHRS
2 <9.2V> Q554
MECHCS Q553
3 Q554 ((9.2V))
MECHCK
<0V> 2SB621ARSTA KTC3199GRTA
TO 4
MECHSI ((0V)) R580 FAN MOTOR FAN ON/OFF SWITCH
DVDREG 5
<9.19V> 4.7K SUPPLY SWITCH
MECHSO
CIRCUIT 6 ((9.19V))
MECHRQ
(CN701) ON 7 R579 <0.14V>
ASPECT 5.6K ((0.68V))
SCHEMATIC 8
SGND
DIAGRAM-20 9
SW5V R578 Q553
10 820K <9.2V> R577
14.7V <0V> ((0V)) 10K
11 C552 R576
+7.5V 0.1 ((0V)) 820K
12
-7.5V
CP701
SCHEMATIC DIAGRAM - 24
: +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE
MAIN CIRCUIT
C422
0.15
5600P
C420
R435
C418 270K R436 R437
0.1 82K 82K
C419 C421 R438
R434 0.039
15K 0.047 8.2K
((-7.97V))
<-7.95V>
((0V))
((0V))
((0V))
((0V))
((0V))
((0V))
<0V>
<0V>
<0V>
<0V>
<0V>
<0V> IC402
14 13 12 11 10 9 8 M5228FPE1
QUAD OP AMP
-VCC
SL
-
-
+ +
SW1 SR
C/L
IC402 SW2
R C
+VCC
+ +
Q407
-
-
1 2 3 4 5 6 7 KTC3199GRTA
MUTING SWITCH
<7.89V>
((7.89V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
C423
50V1
R440
15K
R439
15K
C427 C426 C424
0.047 0.1 C425
0.1 0.047
R441
39K R442
39K
R429 <0V>
R430
R431 C428 SW
Q407
33K
1K ((0V)) 18K 16V10 C429
<0.73V> 50V1
((0.73V)) <0V>
((0V))
150K
R448
FR
FL
SW_MIX
CENTER_F
+7.5V
-7.5V
SW5V
IC502
+1/2 VIN1
-1/2 VIN1
+VIN2
+VIN1
+3.3V
-VIN1
+10V
IC502
GND
GND
VO4
VO5
VO3
VO2
VO1
STK470-050A 1 2 3 4 5 6 7 8 9 10 11 12 13 14
35V5600P
35V3300P
35V5600P
35V3300P
<9.26V>
((9.28V))
<28.67V>
((28.67V))
<17.46V>
<-8.57V>
((17.22V))
((-8.55V))
<-7.95V>
((-7.96V))
<16.25V>
((16.26V))
<7.98V>
((7.99V))
<15.09V>
((15.1V))
<-29.96V>
<8.8V>
((-29.83V))
((8.84V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
HIC
C530
C529
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