Sony RMT-V266A, Service Manual

Page: 51 / 95

SLV-AX10/AX20/N50/N60/N70/N80/
LX4/LX5/LX6S/LX7S/LX8S
4-7 4-8
REC/PB HEAD AMP
MA-370 (1/8)
VIDEO, AUDIO,
SERVO/SYSTEM CONTROL,
TUNER, POWER SUPPLY MF-319 (N70/N80/LX8S)
(POWER, EJECT SWITCH)
JK-178M (LX4/LX5)
JK-178H (LX6S/LX7S)
JK-178HV (AX10/AX20/N50/N60)
JK-178HVMX (N60U)
JK-191 (N70/N80/LX8S)
(LINE 2 IN)
DI-74 (LX4/LX5/LX6S/LX7S)
DI-74V (AX20/N60)
DI-74S (N70/N80/LX8S)
DI-74VMX (N60U)
(DIAL TIMER)
DM-89 (N70/N80/LX8S)
(USER CONTROL)
MA-370N3S (LX4/LX5MX/LX5PA/
LX5PC/LX5VZ)
MA-370N3A (LX5CS/LX5CL)
MA-370N5S (LX6S/LX7SMX/LX7SPA/
LX7SPC/LX7SVZ)
MA-370N5A (LX7SCS/LX7SCL)
MA-370A8 (N80)
MA-370A7 (N70)
MA-370N7S (LX8SMX)
MA-370N7A (LX8SCS)
MA-370A5 (AX10/N50)
MA-370A6 (AX20/N60)
MA-370A6MX (N60U)
For schematic diagram
• Refer to page 4-23 for waveforms.
GND (AN)
SW_5V
0.1u
B
C272
0.01u
B
C271
470
R270
XX
C273
XX
C274
0.1u
B
C276
470
R271
0.01u
B
C275
0.1u
B
C279
10V 100u
C280
±
0.5%
1800
R272
100uH
L270
XX
C270
XX
C277
0.22u
B
C284
0.01u
B
C282
0.01u B
C281
0.01u
B
C283
6800
R276
22k
R277
22k
R278
22k
R279
0.01u
B
C285
VA1
VA5
VA2
VA3
VA4
VS3
VA7
RS1
RS2
VS7
VS6
0.60mm R273
3900 R274
JL260
JL261
JL262
JL263
JL264
JL265
JL266
JL267
JL268
JL269
JL271
JL272
JL273
IC260 LA70011
1
2
3
4
5
6
7
8
9
10
11
12 13
14
15
16
17
18
19
20
21
22
23
24
AU1
AU2
AU3
JL270
HS5
JL274
JL278
JL279
JL277
JL282
JL281
JL280
JL284
JL287
JL286
4P CN270
HF ADJ 1
PB RF 2
RF SWP 3
GND 4
GND
(AN)
0.022u
C278
B
0
R267
0.1u
B
C267
XX
C268
100p
CH
C286
AUDIO CH2 L
1
AUDIO REC
2
AUDIO CH1 H 3
FE 4
GND(SW)
5
SP CH1 F
6
SP CH2 S 7
SP CH2 F 8
EP CH1 F 9
EP CH2 S
10
EP CH2 F
11
1
A
1
3
4
2
EP CH2
AUDIO CH1
7
SP CH1
AUDIO CH2
9
10
EP CH1
5
11
SP CH2
6
8
REC CURR ADJ
REC H
REC C
REC Y RF
PB RF
COMP SYNC
TRICK H
RF ENV
RF SWP
HA SWP
ENV SW
AUDIO CH2
AUDIO REC
AUDIO CH1
AMP
H.SYNC
AMP
DET
H
AT
T
VCC
SW30
AMP
PB OFF
BIAS
SP
ALL 5V
CONT
SP OFF
10k
PB ON
COMP
AMP
REC
AGC
EP OFF
CURRENT
AGC
VCC
CURRENT
1k
ENVELOPE
VCC
L
HA
TO HA
REC OFF
SW30
H.SYNC
AMP
AMP
EP
HA
VCC
EP OFF
PB OFF
DET
SP OFF
REC
10k
BIAS
AF ENV
EXCEPT:LX4/LX5
REC
Y/CHROMA CHROMA
SIGNAL PATH
Y
MA-370 BOARD(1/8)
16
AUDIO
SIGNAL
PB
IC260
VIDEO SIGNAL
VIDEO REC/PB AMP
4.9
6
R3.2/
P2.5
R4.2/
P4.9
R1.4/P0
R3.8/
P2.0
R3.9/
P2.0
R2.5/P0
R3.9/P2.0
R1.6/P2.0
R1.6/P2.0
R2.5/
P0
R1.6/P2.0
R4.1/P0
R3.4/
P0.4
R3.4/P0
R2.0/P4.2
R0/P1.6
R0/P2.6
0.3
1.8
0
R0.2/P0.5
3
2 1
B
4
E
10 12 13 9
D
11
C
7 3 2 6 5
F
8
5
4
B+
B+
CHECK
NO MARK:REC/PB MODE
R :REC MODE
P :PB MODE
TO(2/8)
-REF.NO.:1000 SERIES-
REC/PB HEAD AMP(RP BLOCK)
XX MARK:NO MOUNT
1
VIDEO HEAD
CN260
11P:EXCEPT SLV-LX4/LX5
6P :SLV-LX4/LX5
2
TO(3/8)
TO(7/8)
3
TO(4/8)
4