Sony LX40 Service Manual page 39

SLV-LX40/LX50/LX60S/LX70S
MA-405 (Y/C, AUDIO PROCESSOR) SCHEMATIC DIAGRAM
– Ref. No: MA-405 board; 1000 series –
• See page 4-5 for printed wiring board.
• See page 4-21 for waveforms.
1 2 3
MA-405 BOARD(2/7)
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
Y/C, AUDIO PROCESSOR (VA BLOCK)
A
AN_GND
5 B +
SW_5V
MA-405 (7/7)
AU_GND
(SEE PAGE 4-19)
B +
SW_12V
R1.7/P5.0
R382
1
R1.8
/P5.0
C382
0.01u
B
C383
47u
16V
C384
XX
16
0.60mm
JS303
C
C370
XX
CN351
D
3P
FE HEAD
GND (AU) 3
2
FE HEAD 1
E
IC350
CN350
ACE HEAD
7P
HEAD SWITCH
JL323
AERASE HEAD 7
GND (AU) 6
JL322
A HEAD REC
5
JL321
A HEAD PB 4
GND (AU) 3
CTL (Y) 2
CTL (X)
1
F
A MUTE VS1
JL213
Q VD VS2
D2
JL214
I2C CLOCK(VIDEO) HS4
G
JL215 D4
I2C DATA(VIDEO) HS3
6 D5
RF SW P VS6
MA-405 (3/7)
C ROT VS8
(SEE PAGE 4-11)
ARC CLK VS11
ARC DATA VS12
VIDEO OUT VS13
OSD V OUT VS15
CTL_X
B
+
CTL_Y
H
C571
C570
1u
0.01u
B
B
R575
4700
20 19
I
IC570
ARC
1 2
JL570
C572
J
4.7u
50V
L570
100uH
Y/C, AUDIO PROCESS
MA-405(2/7)
4 5 6
R :REC MODE
P :PB MODE
Q380
2SD1620-TD
BIAS OSC
R4.7/P5.0
L350 LX40/LX50
C381
B + XX
0.01u
R373
R381
1k
3900 R380 L380 1/4W
JS301
47 100uH B+
0.60mm R354
2.2M
C369
JL320
4.7u D351
R355
1SS119-25TD
C579
LX40/LX50 68k
XX
D352 1/4W
1SS119-25TD
C356
33u
25V
R372 C357
Q351
560
4.7u
2SC2712Y-TE85L
50V
MUTE 80 79
SWITCH
T380
BIAS OSCILLATOR
R357
TRANSFORMER
8200
C371 Vref
560p
R383
C380
180
0.047u
LX40/LX50
0
PET
MUTE
R358
1800 2.3
REC
AMP
R359
C358
4700 LINE
1u 50V
A-GND AMP
2.4
B + JL307
R362
1200 2.4
C360
R363
2700p R0.6/P0
18k
R370
12k C359
REC-EP.LP
0.001u R1.6/P5.0
PB-EP
AUTO
C361
BIAS
XX
R0.8/P0
R1.6/
P5.0
2.4
C364 C365
1 2 3 4
10u 16V 0.01u REC
2.4
B EQ
AMP
R0.8/ C362 R364 R367
R365 5600
P0 47u 270 2.3
330k
16V
C368 R366
R3.1/
PB-LP.SP
0.01u 8200 P2.3
B
R369
8 7 6 5 C366
820 1u 50V 2.3
0
R371 A MUTE
JL305
18k
R4.1/P0
REC-H
C2
0.8
C.ROT
R3.3/
C363
P0.2
4.7u
HASW
50V
0.8
RF SWP
4.2
C1
TRICK-H
R1.6/
ACC
P2.0
DET
FILT
C201
0.047u
B
12 7
IC201
LA71053M-MPB
1
15
C202
L207 0.01u
220uH B
C253
R231 39p
47k
R224
R223
47k
680
D7
D8
C574 C578
10u R574
0.01u
1k R573
16V
B 8200 C577
0.01u
B
18 17 16 15 14 13 12 11
3 4 5 6 7 8 9 10
R571 R572
470 470
R570 JL220
10k
JL222
JL219
C573
0.33u C575 C576
JL218
D7
B 0.01u 100u
B 10V JL217
D8
4-9
7 8 9
C352 C244
C241
0.1u 1u
0.01u
B
B
C249
C247
14
1u C245
0.022u
C354 B
1u
10u C351 R351 B
B
16V 47u 5600
25V C246
R353 R216
R350
R356 0.01u
5600 1800 R215
68k
5600
8200
1/10W
C250
0.047u
R352 R214
B 1500
68k
C353 1/4W
C355
1u LX40/LX50
1u C350
1u
50V
78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59
ALC A-Vcc N.C N.C N.C N.C
DET
VXO2
L2 L1
KIL INV
TU
DET
VXO1
AMP VCO
SLD
D.L
EQ
REC REC REC
ALC APC APC APC
R
TH
P
LPF
RA B
Vref
PB P
REC BPF1
BGA-B
PB P
ACC P BGA-A
YNR
AMP
REC R
R
P
BGA
P R
R
BPF2
LPF
P
P R
Sub Sub Main B-UP ACC
COVN BPF CONV AMP AMP
R
1/2
R P P R
FBC
C-LPF
P
R
KIL KIL
P R
B.D.
Y/C
REC FM Main N.L DETAIL
MIX
EQ MOD EMPH EMPH ENH
PIC
CONT
FM SQPB
S
AGC EQ DOUBLE SUB
DEMOD
LIM LPF
N DHP
NC
PB
EQ 8
SERIAL
CLAMP
DECODER
SYNC
BAL FMAGC EQ N.L M-Em
TC1 DET Y-Vcc CTL FILT FIL Y GND DET
PB-H
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
R207
C209 XX
9
C204 C205 47u R221 R220
2.0 C210
1u 0.01u 16V 0 0
0.1u B
B B C251
3.7 0.1u C212 C213
B XX 390p
R201
1.3
330
R206 R208
C206
XX 0
0.1u R203
R204
B 330
AN_GND
8200
Q201
C217
R211
2SC2712Y-TE85L R210 0.022u
4700
BUFFER 1500 B
C216
C215 1u
R212
10p 50V
560
R2.4/
P2.1
Q202
L203
2SC2712Y-TE85L
10uH
BUFFER
5.0
R1.8/
P1.4
10 11 12
B +
C254
1u
E1
L206 L205 B
LX60S/LX70S
100uH 100uH
5.0
2.3
C239
0.01u B
C240
1.6
47u
C238
Q204
16V
47u 16V 2SD601A-QRS-TX
R225
C203
0.001u LX40/LX50 680
CH C255
0.1u
B
B+
58 57 56 55 54 53 52 51
4Fsc
C237
0.01u
B
1H/2H
D.L CLK IN
0.8
C236
2.0
0.01u
IC201 B
9.0 C235
0.1u B
Y/C PROCESSOR
AUDIO PROCESSOR
1.4
1H
D.L 2.2 1.4
B +
60/50
4.9 C234
1u
N.C 2.1
B
Q203
2SA1162Y-TE85L
C233
1.9 10u 16V BUFFER
VCA
3.1
CLAMP
C232 L204
3.0 R213
1u B 100uH
1k
13
SW-Vcc
C230
5.0
0.1u F
CLAMP
C229
R3.2/ C231
0.1u B
P1.3 47u 16V
REG
C228
4.1 C227
47u 16V
0.1u
P R
B
CLAMP
C226
R2.1/ 0.1u B
P0
FBC
C225
2.0
1u 50V JL207
E1
CLAMP Chara CLAMP
C224
INS.
R1.7/ 0.1u B
AGC
P0
TC2
C223
1.5
1 2 3 22u 16V
6dB
SW GND
P R
AMP
E3
N.L
De-EM
R2.2/P0.3
SYNC VIDEO
SEP AGC C222
10u 16V
3.0
10
E5
E7
AFC
FILT
23 24 25 26 27 28 29 30
11
R222
XX
C221
C220
R219 1u
0.01u
C219 100 B B
XX
E8
R209
5600
C252
0.01u
SIGNAL PATH
VIDEO SIGNAL
CHROMA Y Y/CHROMA
REC
PB
4-10
13 14
B
+
L2_V L2_VIDEO
AN_GND AN_GND 7
HM4 L2(L)
MA-405(6/7)
(SEE PAGE 4-17)
AU_GND AU_GND
HM5 L2(R)
L561
100uH
R563 R562
180 150
1/4W 1/4W
3.2 R564
68
R561
330
C563
470u
2.6
10V
C561 C562
0.01u 47u
B 25V
JL560
R565
75
D563
XX
C564
D562
XX
XX
D561
RD8.2ES-T1B
CNJ562
VIDEO
L
LX60S/LX70S
AUDIO
R
OUT IN
VS15 RF VIDEO
8
VT2 TU VIDEO IN
MA-405 (5/7)
HT1 TU AU MONO
(SEE PAGE 4-15)
JS321
xx
JL368
JS327 HT3 RF AUDIO
xx
LX40/LX50
JS323
0.60mm
HF_GND
HV1
NORMAL_OUT
HV2
NORMAL_IN
HV3
AUDIO_R_OUT
HV4
AUDIO_L_OUT 9
HV5
L1_AUDIO_R
MA-405(4/7)
HV6
(SEE PAGE 4-13)
L1_AUDIO_L
LX40/LX50
HM5
L2_AUDIO_R
JS324 HM4
JS325
0 L2_AUDIO_L
0
HT3 RF_AUDIO_OUT
FSC_FOR_ADJ
VS1
AUDIO_MUTE
C3
VA1 REC CURR ADJ
C2
VA2 REC H
1
C6
VA3 REC C
MA-405 (1/7)
C4
VA4 REC Y RF
(SEE PAGE 4-7)
C5
VA5 PB RF
VS3 COMP SYNC
C1
VA7 TRICK-H
AUDIO
SIGNAL