Text preview for : schmain1.pdf part of Technics SA-AX540 TECHNICS SA-AX540
Back to : TECHNICS SA-AX540.zip | Home
SCHEMATIC DIAGRAM-1
: +B line : -B line : Main signal line : FM/AM signal line
MAIN CIRCUIT
AN6558F
IC451 R463 12K R459 68 C461 6800P R461 180K C459 0.022 1000P C455 C463 50V4.7
PHONO EQ IC
E401 C406 100P JK401 L CH PHONO 3 R CH 2
C466 0.01 C465 0.01
1
R451 220K
C457 10V33 C458 10V33 R458 270
R455 56K
C453 100P
4
3
2
1
IC451
R456 56K C454 100P <0.05V> 5 6 <0.05V> 7 8 <-0.11V> <14.24V> R466 56K r
R452 220K
R454 820 CP401 GND 1 SW_OUT 2 GND 3 V_SELB 4 V_SELA 5 SW_EXT 6 SR_EXT 7 CP402 SL_EXT C_EXT L_EXT R_EXT -14V +14V AGND
C452 50V4.7
R460 68
C462 6800P R464 12K
C456 1000P C460 0.022 R462 180K
C464 50V4.7
TO AC-3 CIRCUIT (CN401) ON SCHEMATIC DIAGRAM-8
f e f h
R465 56K
R457 270
<0.05V>
<-0.11V>
<0.05V>
R453 820
C451 50V4.7
<-14.95V>
q
l C580 R580 16V22 680 + <14.97V>
<-14.96V>
NJM2060D
n p q r BUFFER AMP <0V>
IC602
C577 0.01 <0V> <0V>
NJM4580DD
BUFFER AMP <0V>
<0V> <0V>
<0V>
5 6 7
l k
m
C582 560P R572 680 C574 1000P R574 2.7K <0V> 10 9 8 IC652 R582 2.7K 2 1
C652 R654 63V33 1.8K
3
4
<0V>
14
13
12 11 VSS
IC652
<0.03V> <0V> <0V> <0V> C4 8 6 7 R581 2.7K C581 560P C579 16V22 R652 680 5
IC602
<0V> <0V> <0V> <0V> <14.31V> <0V> <0V> 1 2 VCC 4 3 5 6 7 R573 2.7K C573 560P
C691 63V33 +
R576 2.7K C576 560P
CN904 S_DET OVL2 6CH_STB SW_MAIN_IN RS_IN GND1 SURR_SROUT SW_OUT 1 2 3 4 5 6 7 8
R575 680
R571 680
R420 100K L4 R4
MAIN_LIN 9 MAIN_RIN 10 g h d i j b k l h p n t
1 2 3 4 5 6 7 SL_EXT C_EXT AGND PH_L PH_R L_EXT R_EXT CP1201 CP1202
SURR_SLOUT SW_OUT SURR_SROUT
C_IN 5.6V SURR_SLOUT
-14V SW_EXT SURR_COUT
L_DOUT 6CH_STB R_DOUT
R_DOUT
TO PRO-LOGIC CIRCUIT (CN1201) ON SCHEMATIC DIAGRAM-10
TO PRO-LOGIC CIRCUIT (CN1202) ON SCHEMATIC DIAGRAM-10
TO PRO-LOGIC CIRCUIT (CN1203) ON SCHEMATIC DIAGRAM-10
TU_ROUT
SR_EXT
TU_LOUT
TO PANEL CIRCUIT (CP905) ON SCHEMATIC DIAGRAM-7
L_DOUT SL_IN
+14V
CP1203
SURR_COUT
+
TO PANEL CIRCUIT (CP904) ON SCHEMATIC DIAGRAM-6
C414 16V10
C575 16V22 C578 0.01
C571 16V22
p a
f
C413 16V10
R419 100K
1 2 3 4 5 6 7
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8 CN905
+ R692 1.8K
TO AC-3 CIRCUIT (CN402) ON SCHEMATIC DIAGRAM-8
1 2 3 4
g h i j
L5
h IC601 POWER AMP(HIC) R690 C602 820 63V33
RSN310R36-P
R605 220 R689 C601 R603 820 63V33 1.8K
c b R5 C641 R642 63V33 1.8K R674 4.7 <0V> R604 1.8K SGND <0V> 24 IN3SGND IN2IN1PASSPASS+ 18 TTLPowLim 17 VDlim <-8.27V> R638 150K R637 150K C618 1000P <-16.55V> 16 RLY 15 SENS<14.27V> C617 2.2 <-0.75V> R634 470K <0V> 14 SENS+ 13 C603 820P <0V> 23 C642 820P 22 IN2+ IN2-VD C604 820P <61.1V> +VD 21 C607 18P R607 56K NC (OPEN) C621 100V10 <57.7V> 19 C619 25V100<-0.26V> R636<-28.47V> 47K NC (OPEN) R643 56K C643 18P R608 56K C608 18P RLY <-9.29V> SENSSENS+ <-0.28V> IHDET DISP C622 100V10 <-57.7V> 20 R606 220 <0V> <0V> R647 220 R624 4.7 22 21 C692 820P R697 220 C654 820P 20
a
d
TNR_CK SURR_CK 18
CP1204 19 17 <0V> R656 220 <0V> R672 47 <-60V> R671 C672 100V10 47 C671 100V10 <0V> C693 18P <0V> 16 15 C658 18P R658 56K R693 56K
SCHEMATIC DIAGRAM-2
1 2 3 4 5 6 7
TO PRO-LOGIC CIRCUIT (CN1204) ON SCHEMATIC DIAGRAM-10
D617 RVD1SS133TA <0V> C668 1000P 14 R688 <-12.1V> 150K <15.26V> 13
SURR_DT SURR_CE TNR_DT SEL_ST
IC651
SP_A SP_B S/C_SP OVERLOAD R679 6.8K 11 R684 470K <-11.23V> <-0.01V> 10 9 DC <-12.32V> OVERDET GND AC d VOL1 -HOUT +HOUT HIC R681 220K R682 220K C666 25V100 + R683 47K 8 C685 0.01<-0.01V> <-0.05V> 7 R685 150K 6 <0V> D652 <-31.64V> 5 D651 <31.57V> 4 <0V> 3 2 VOL2 <-61.7V> VHVH+ g h IC651
BACKUP 5.6V
SURR_CE
C616 25V100
RSN313H25-P
1 2 3 4 5 6 7 8 9 10
TO PANEL CIRCUIT (CP902) ON SCHEMATIC DIAGRAM-5
a n d c b f 1 R664 47 L652 0.7µ L651 0.7µ R663 47 <62V> L604 0.7µ L602 0.7µ D655 R645 47 C662 0.047 C661 0.047 R662 10 j R661 10 k m R609 47 L603 0.7µ d a C625 10 k h e q b a p b C626 10 c D655 RVD1SS133TA D651,D652 RK306LFU1
SURR_CK SURR_DT
: -B line
TNR_CE
FM_ STEREO SD
IFIN V_SELA V_SELB SEL_ST TUN_DT TUN_CK
CN902 R687 150K C667 2.2 12 R629 1K R630 120K R631 150K R632 180K D601 RK306LFU1 C646 0.1 R610 47
: +B line
IC601
a b c
L751
12
IHDET <-1.54V> DISP 11
100µH
10
DC <-12.23V> OVERDET C615 0.01 R633 47K 9 8 <-0.01V> GND <-0.05V> AC 7 R635 150K D602 RK306LFU1
C758 100
CN903
6 5
<0.01V> Vo1 <-31.7V> -HOUT <31.62V> +HOUT <0.01V> <-61.7V> <62V> <0.01V> 4 Vo2 3 VH2 VH+ 1 Vo3
f e
k
l
1 2 3 4 5 6 7 8 9 10
TO PANEL CIRCUIT (CP903) ON SCHEMATIC DIAGRAM-5
: Main signal line
+14V -14V
r q
RVD1SS133TA D605
j a b t
HP_L
R612 10
C612 0.047 C611 0.047 R611 10 C644 0.047 R644 10 R625 100 R626 100 R627 100 R628 100
c
d
HP_R AC AC2 -27V LIMITTER
e
g
AF_MUTE RDS
a
1 2 3 4 5 6 7 8 9 10
: FM/AM signal line
TO PANEL CIRCUIT (CP901) ON SCHEMATIC DIAGRAM-5
RELAY
i
b
CN901