Text preview for : schmain2.pdf part of Technics SA-AX540 TECHNICS SA-AX540



Back to : TECHNICS SA-AX540.zip | Home

SCHEMATIC DIAGRAM-3
: +B line : -B line : Main signal line : FM/AM signal line

<-9.25V>

C537 16V10 SR3

R535 2.7K <0V> R537 10K <0V> <0V>

<-0.01V>
10K 4.7K

Q605
10K

Q605

Q651

<-0.01V>

RVTDTA114EST
REGULATOR

Q551 Q552
<0V>

R595 1K C535 0.1

R550 8.2K R545 680K

a b c d

<-0.37V> <-8.23V>
10K 4.7K

<-15.4V> R596 1K <-15.4V>

<-6.16V> 10K <-0.37V> <-0.05V> <-0.88V> <-0.92V> <-7.64V> R621 <-6.3V> 6.8K
10K 4.7K

R698 3.3K

R613 3.3K <-0.91V> R614 2.2K n C703 75V7500 f h g e r R443 56 C704 75V7500

g h e

<4.45V> R639 100K

10K 10K

R623 <-6.17V> 6.8K

<-0.01V>

<-0.91V>
10K 4.7K

C586 16V10 R586 10K

R584 2.7K <0V> <0V>

<-27.7V>

Q554R598
1K <-15.4V> b Q551,552,553,554 R597 1K <0V>

Q603
<-1.14V>

<-1.012V>

Q601

2SD1915FTA
MUTING CONTROL

a c d

R640 1K R615 1K Q601,602,603

Q723

RVTDTA114YST
SHORT DETECTOR

C3 R585 10K C585 16V22

Q553
R583 2.7K

<-15.4V> <0V> C572 16V22

D618 R699 MTZJ18CTA 2.2K

RVTDTC114YST
SHORT DETECTOR bp d a m

Q725

<5.07V>

<-0.01V> <-0.01V>
10K 47K

Q725

RVTDTA114EST
REGULATOR

Q604

RVTDTA143XST
RELAY DRIVE

<4.76V> R622 6.8K g m

SL3

R538 C538 10K R536 16V10 2.7K

Q604

Q652

10K 4.7K

<-31.96V>

Q602

<-0.01V>

RVTDTA143XST
RELAY DRIVE

Q651, Q652

C709 16V33

R713 39

R714 39

R711 7.5K

k t l <5.59V>

<14.96V> <14.94V>

Q703
<31.42V> C708 0.01

R707 220 R705 4.7K

R723 1/2W 1

D732 RVD1SS133TA

<14.37V>

<31.65V>

<31.89V>

Q701

<31.63V>

10K 47K

Q723

a

d

c

e

f

j

Q706
<13.83V> C715 C710 16V100 0.01

<15.52V>

R706 1K

<15.53V> <6.82V> R712 6.8K R708 1.5K D705

C707 35V100

R728 680K

D702

R729 680K

35V5600P 35V5600P

D725

D721

D723

<6.22V>

MTZJ6R2BTA

C721 0.1 D722 D724 D726 D728 C722 0.1

C706

D703

D701-704 1N5402BM21

R722 12K C712 50V10

R720 10K

D707

MTZJ16CTA

REGULATOR D708 Q703,704

<-15.51V> C713 0.01

2SC1740SQSTA
REGULATOR Q707

<-27.04V>

<-27.6V> C711 0.01

Q708 2SA1534AQRTA <-14.91V>
REGULATOR Q708 REGULATOR Q706 C714 25V47

R721 560 <-38.5V>

R727 R726 220 220 <-31.86V>
10K 47K

<5.28V>

D731

2SD2374PQAU

MTZJ27DTA

Q701

R725 820

RVD1SS133TA

D721-728 1N5402BM21

Q724 R780 3.9

<-31.88V>

Q724 RVTDTC114YST REGULATOR
<-31.98V>

Q707

R724 1/2W 1

2SB1548PQAU

2SC1740SQSTA
REGULATOR

d

C440 0.01

11 10 9 8 7 6 5 4 3 2 1 CE TU_ROUT DET 7.5V SD +14V DI TU_LOUT CL DO CP101

TO TUNER PACK (RAN0001MM)

R440 56

D401

R442 47K

MTZJ7R5CTA

s

R441 47K

D701 q

<6.22V>

C705

D727

Q704

C702 0.1

D704

SCHEMATIC DIAGRAM-4
: +B line : -B line : Main signal line

RL603 p q
1 2 5 3 4

SR5

SL5 JK603 + 2 3 + 4 1 R797 22K

R798 22K

6

D613 c a b d RVD1SS133TA RL604
1 2 5 3 4 6

R618 390

R CH L CH

SURROUND SPEAKERS

D614 RVD1SS133TA C5
1 2 5

R619 390

R799 6.8K R6 L6 JK602 + + L CH R CH FRONT SPEAKERS L6 R793 12K + + R6 R795 R794 12K 22K R617 390 C690 0.01 L CH R791 12K R616 390 R792 12K

RL601
3 4 6

D611 RVD1SS133TA RL602
3 4 6 1 2 5

R CH

D612 RL601-604 RSY0013M-0 RVD1SS133TA

+ CENTER SPEAKER JK601

Q777,778

2SA933SQRSTA
FAN MOTOR DRIVE

Q777
<0V> <-0.13V> <-16.3V> R771 100K <-0.01V> C774 6.3V100 <0V>

RVTDTA114EST Q774
<0.01V> D774
10K 1K

Q775

C701 0.01

E601

FAN MOTOR DRIVE

Q772,776,781

Q774

RVTDTA113ZST
FAN MOTOR DRIVE C772 50V4.7 D771,772,774 MA700ATA D769,770 RVD1SS133TA C771 50V4.7

2SC1740SSTA
R776 22 C775 16V10 FAN MOTOR DRIVE Q780 W752 j i BACKUP5.6V 3 2 RELAY 1 W701 h g f e 1 2 3 4 5 6 7 8 9 10

R782 39

Q775
<-0.01V> <-0.01V>
10K 10K

2SA933SQRSTA FAN MOTOR DRIVE
Q773

2SB621AQSTA
FAN MOTOR DRIVE <-12.13V>

TO POWER CIRCUIT (CN752) ON SCHEMATIC DIAGRAM-11

<-0.16V> D771 D772 <0V> <-16.4V> R770 100K R769 10K <-16.4V>

<-0.01V> R767 150K <-16.22V> D769

Q778
D770

Q781
R768 1K C777 16V220 <-0.02V> <0.01V> R766 47K

C778 16V100

<-16.4V>

R778 4.7K

R777 150K

R786 R784 150K 150K <0V>

D768

<-0.65V>

TO TRANSFORMER CIRCUIT (W701) ON SCHEMATIC DIAGRAM-11

C773 0.1

Q780

c R730 t 5.6

11 12

C780 16V470

R774 1.5M

<0V> <-16.4V>

<0V> <-16.5V> <0V>

C776 50V1

1 2

M771

C779 R779 <-16.4V> 16V100 10K

D773

Q776
R773 10K <-16.4V> R775 330

C781 0.01 E 1 -B 2

CP771 M

Q772

FAN MOTOR D773 MTZJ8R2CTA D768 MTZJ3R3ATA

Q773