Sony KE-MR50M2 Service Manual ▷ View online
KE-MR50M2 (CH) 3-2
Q3001
+3.3V
CN3301
DEM BOARD
TO
B
K
(AUDIO PROCESSOR)
1
9
8
10
7
6
3
+3.3V
MUTE
SP_PROT
RES
SCL2
SDA2
SPDIF
CN3001
27
MCKO2
25
33
44
RECEIVER
RX1
SDTO
LRCK
SDA
24
DIGITAL AUDIO
IC3001
SCL
PDN
BICK
INT1
34
31
26
37
28
1
17
PWM_AM_R
MCLK_IN
SCLK
DIGITAL AUDIO
PWM PROCESSOR
34
LRCLK
PWM_AM_L
PWM_AP_L
SDIN
19
18
35
PWM_AP_R
29
VALID_L
23
MUTE
RESET
7
10
9
8
6
4
5
2
1
3
IC3004
Q3003
OVER OUTPUT
PROTECT
SHOTDOWN
RESET
PWDN
PWM-BM
PWM-BP
OUTPUTA
OUTPUTA
PWM-AP
14
15
13
1
16
5
27
26
PWM POWER OUTPUT
IC3003
PWM-AM
22
23
OUTPUTB
OUTPUTB
Q3004-3007
1
2
3
4
R+
R-
L-
L+
CN3002
L
R
3
GATE DRIVE
CN3003
F3003
VCC REG
Q3002
17
32
PVDDB2
PVDDA2
18
LDROUTB
LDROUTA
31
D3003
28
PVDDA1
PVDDB1
21
PVDDB1
20
PVDDA1
29
AUDIO
AUDIO
AUDIO L
AUDIO R
AUDIO R
AUDIO L
CN6301
G BOARD
TO
C
2
+12V
5
AUDIO VCC
1-2
D3006
D3005
D3004
F3002
F3001
38
XTI
XTO
29
30
X3001
24.576MHz
IC3002
(2)
K Board
KE-MR50M2 (CH) 3-3
1
2
CN1003
3
2
CN1005
OVP
Q1018
2
1
3
PFC SW
Q1009
D1016
L1001-L1003
D1014
12V REG
IC1003
CTL
VCC
OUT
D1004
RECT
PFC CONT.
IC1001
3
9
15
16
Q1024
OVP
11
13
RV1001
VFB
SS
I ERR
VREF
VCC
OUT
SS
Q1006
8
7
9
10
6
5
Q1012
LVP
VREF
IC1004
12
13
3
2
14
1
IC1002
PROTECT
IAC
ENA
6
8
D1009
D1002
Q1001
RESET
RESET
Q1004
10
Q1013,1017
Q1011
SS RESET
PH1202
TO
UNIT
PDP
PDP
UNIT
TO
TO
CN3304
DEM BOARD
A
E
K BOARD
CN3003
TO
3
1
5
D1321
D1310
Q1401
SW
IC1801
CONTROL
IC1802(2/2)
11
10
9
8
13
14
RV1701
VS_ADJ
D17011,D1702
PIT
T1602
3
6
14
11
11
14
6
3
T1601
PIT
PH1601
ISOLATER
10
VC2
Q1604
CONVERTER
Q1607
CONVERTER
Q1606
9
12
15
16
2
1
OCP
VG(L)
VS
VG(H)
F/B
VC1
VSENSE
DRIVER
IC1601
SS
Q1602
SS RES
7
8
D1401
8
7
VD
6, 7
IC1307 BUFF
2
3
1
12
13
14
IC1305 OVP,LVP
V REF
IC1304
D1306
LATCH
Q1306
Q1303
LATCH
4
5
2
13
1
10
11
6
7
14
8
9
CONV
Q1305
CONV
Q1304
6
2
3
D1307
IC1306
DRIVE
LDRV
FB
HDRV
VC
VCC
VD_ADJ
RV1501
ISOLATER
PH1402
ISOLATER
PH1401
10
12
15
D1501
PIT
T1401
6
3
Q1405
CONVERTER
Q1406
CONVERTER
SW
Q1402
SS
IC1401
DRIVER
VSENSE
VC1
F/B
VG(H)
VS
VG(L)
OCP
1
2
16
15
12
9
VS
VS
10
9
CN1010
VCC 5V
1, 2
CN1009
G PROT
CONV_DET
PANEL ON
POWER ON
STBY 6V
FAN 12V
3.3V
3.3V
11
10
9
8
6
5
2
1
CN1007
CN1006
AUDIO Vcc
AUDIO Vcc
26V
1
2
3
2
1
CTL
VCC
OUT
+5V REG
IC1303
PH1201
ISOLATER
D1208
2
1
IC1302
REG
SW OUT
VIN
Q1309
VCC CONTROL
Q1308
VCC SW
D1301
D1302
4
3
2
1
6
7
9
12
13
T1201
PIT
9
12
15
16
2
7
8
D1204
CONVERTER
Q1204
CONVERTER
Q1203
OCP
VG(L)
VS
VG(H)
F/B
SS
VC1
DRIVER
IC1201
Q1307
D1314
D1313
4
5
2
Q1503
1
7
6
D1503
IC1802(1/2)
IC1402
PH1403
Q1809
Q1811
Q1811
Q1804
Q1802
Q1502
IC1501
CONTROL
Q1605
Q1601
SW
Q1603
D1602
PH1602
Q1701
D1703
L1701
Q1705
Q1704
DISCHARGE
IC1301
VREF
Q1201
SS
D1201
G
(POWER SUPPLY)
Q1003
Q1005
DRIVE
Q1019
Q1020
LATCH
Q1202
Q1014,1016
LATCH
Q1702
D1803
Q1501,1504
DISCHARGE
RY1001
Q1015
RELAY
DRIVE
Q1008
VRMS
D1316
D1601
IC1701
L1306
THERMO
12
Q1801
VREF
1
2
AC
AC
CN601
AC INLET
CN603
AC
AC
1
2
3
2
ST-BY 6V
POWER ON
CN604
T604
LFT
Q601
RELAY
DRIVE
TH601
D601
SOURCE
SOURCE
DRAIN
VDD
IC601
DRIVE
7
8
4
D603
1
3
4
5
10
8
PH601
1
IC6012
VREF
D604 L602
F
(LINE FILTER,STBY6V)
T601,T602
RY601
F601
FB
VCC
2
5
T603
(3)
G and F Boards
KE-MR50M2 (CH) 3-4
3-1-2. MEDIA RECEIVER UNIT (MBT-MR2)
(1)
(1)
A(1/2) and H1(1/2) Boards
R-Y
B-Y
Y
VIDEO
AUDIO L
AUDIO R
TU33V
SET9V
SET5V-3
MAIN_SDAT
MAIN_SCLK
5V
9V
30V
SCL
DET OUT
L OUT
R OUT
AFT OUT
F MONO
APC_SW
RESET-O
SDA
MODE
TU2000 TUNER
IN7-S
21
CR
CB
Y
Cr
Cb
TO 2/2
2
VD
HD
AUDIO L/R
MT_L/R,ST_MONO
(AV SW,INPUT TERMINAL)
A(1/2)
CN9504
CN9503
CN8601
5
3
1
HP_L
HP_R
HP_SW
1
3
5
6
10
8
12
4
2
R4
L4
V4
C4
Y4
S4
2
4
12
8
10
6
CN8301
J8501
IN
OUT
CONTROL-S
BUFFER
CONTROL-S
Q8505-8507,
Q8501-8503,
PF_SDAT
PF_SCLK
MAIN_SDAT
MAIN_SCLK
CR
CB
Y
A
STBY5V
MS3.3V
SET5VD
3.3VD
SET2.5V
1.8V
PF_SDAT
PF_SCLK
MAIN_SDAT
MAIN_SCLK
MAIN_CR_OUT
MAIN_CB/C_OUT
MAIN_YV_OUT
SIRCS
MT_MSP_RESET
MT_MODE
MT_APC_SW
MT_HSYNC
MT_FMONO
MT_AFT
B10
B36
B34
B8
B2,B3
B1,A2
B5
B4
B9
A19
A17
A23
A21
B42
B40
B38
B20
B30
A31
A29
B28
B26
A25
CN8504(1/2)
Cr
Cb
Y
XTAL
VS
HS
Cr OUT
Cb OUT
YOUT
16.2MHz
X8301
38
4
9
23
22
21
Q8310
4
2
1
IC8303
Q8311
Q8309
Q8308
CVBS/Y1
C2
CVBS/Y2
1
43
44
Q8304
Q8312,Q8313
Q8306,Q8307
IC8302
YCT-MAIN
Q8305
35
34
33
IN9-CR
IN9-CB
IN9-Y
71
CVOUT3
J8308
3P
2P
J8304
2P
J8307
H
V
CM_R2
CM_L2
V
H
R
L
Y
PB/CB
PR/CR
CM_PR2
CM_PB2
CM_Y2
R
VIDEO
IN4-S
58
CV/YOUT1
IN6_S
16
79
IN1-CV
VIDEO SW
IC8306
18
IN6_Y
19
IN6_C
17
IN6_CV
IN5_CV
12
IN5_C
14
IN5_Y
13
11
IN5_S
23
IN7-Y
24
IN7-C
22
IN7-CV
40
IN10-Y
IN10-CB
41
IN10-CR
42
IN10-L1/H
43
44
IN10-L2/V
Q8318
Y
B-Y
C/CBOUT1
59
R-Y
CROUT1
60
Q8317
Q8315
Y
Q8314,8316
6
7
IN4-CV
8
IN4-Y
9
IN4-C
PF-SDAT
PF-SCLK
SDA
SCL
77
76
72
73
YOUT3
COUT3
J8305
CM_Y1
CM_PB1
CM_PR1
L
R
CM-L2
CM-L1
L
R
J8306
INPUT
TERMINAL
R
L
V
HP SW
HP R
TO 2/2
3
L4
R4
HP L
4
TO 2/2
1
2
3
4
J9502
H1
J9500
TO 2/2
1
R
L
V
4
3
2
1
S3
Y3
C3
V3
L3
R3
R2
L2
V2
C2
Y2
S2
PB/CB
Y
PR/CR
CB
Y
CR
1
2
3
4
V
L
R
J8301
R
L
V
4
3
2
1
VIDEO
IN1
R
L
AUDIO
VIDEO
S1
Y1
C2
V1
L1
R1
S VIDEO
(MONO)
(MONO)
S VIDEO
VIDEO
AUDIO
L
R
IN2
VIDEO
Y
C
C
Y
C
Y
VIDEO
IN3
R
L
AUDIO
VIDEO
S VIDEO
(MONO)
AUDIO
WOOFER OUT
(VAR)
VIDEO IN 1
COMPONENT
5
TO 2/2
MT_MSP_RESET
MT_APC_SW
MT_MODE
MT_FMONO
MT_AFT
Q8206
Q8203
MT-L
MT-R
SYNC
DETECT
Q8201
TU2001 TUNER
SDA
AF_OUT
DE
DE
SCL
30V
9V
5V
MAIN_SCLK
MAIN_SDA
SET5V-3
SET9V
TU33V
Q8210
Q8207
SYNC
DETECT
Q8208
CV/YOUT2
C/CBOUT2
IN2_CV
Q8512,8513
1
VIDEO
IN8-CR
28
IN8-CB
27
IN8-Y
26
22
IN7-CV
IN9_SW
39
COMPONENT
VIDEO IN2
AUDIO
SW
SYNC
51
EXT_CLK/XTAL
X8302
4MHz
67
68
Q8510,8511
B24
9V
A43
SUB_Y/V_2
A45
SUB_C/CB
A47
SUB_CR_OUT
Q9320
Q9319
Q9321
OX
OY
OZ
1X
1Y
1Z
XCOM
YCOM
ZCOM
A
B
C
14
15
4
B48
SECAM_SW
Q9318
12
2
5
Q9311
Q9309
Q9308
Y OUT
Cb OUT
Cr OUT
HS
VS
CVBS/Y1
CVBS/Y2
C2
Xtal
SCL
SDA
21
22
23
9
4
1
2 OR
1
44
43
38
13
14
PF_SCLK
PF_SDAT
X9301
16.2MHz
BUFFER
Q9305
Q9304
Q9307
BUFFER
Q9306
13
1
3
MT_HSYNC
ST_AFT
ST_HSYNC
SCL
B31
A30
SDA
LED_SCL
LED_SDA
ST_HSYNC
ST_AFT
A39
A41
B6
Q8509
1.8V REG
1
3
SET2.5V
3.3VD
D5V-2
MS3.3V
SET9V
STBY5V
(1/2)
C
Y
(MONO)
S VIDEO
VIDEO
AUDIO
L
R
IN4
VIDEO
Y
CB
CR
Y/B-Y/R-Y
IC8503
IC9305
SELECT
Q9310
4
YCT-SUB
IC9302
ST_MONO
TO
JI BOARD
CN1802
KE-MR50M2 (CH) 3-5
A
TO
JI BOARD
CN8504(2/2)
A37
A44
A46
B22
A11
B16
A13
A15
B14
B18
A49
A35
ATT_SW
MS_L_IN
MS_R_IN
CENTER_POL
LINE_MUTE
A_MUTE
HP_SW
O_A_MUTE
P_MUTE1
HP_MUTE1
MS AC DET
AC_RELAY
AUDIO R
AUDIO L
AUDIO L
AUDIO R
6
1
2
AINL
A/D CONVERTER
IC8601
SDTO
AINR
TO 1/2
3
10
5
MS_L
MS_R
IN8_L
22
23
IN8_R
IN1_L
8
7
IN4_R
R4
L4
IN2_R
IN2_L
CM_L2
CM_R1
IN3_R
4
20
IN3_L
R3
L3
IN7_L
19
14
IN5_R
L2
R1
ST_MONO
IN9_L
25
26
IN5_L
ROUT1
37
IN10_R
29
MT_R
MT_L
39
LOUT1
1
TO 1/2
28
IC8304
AUDIO SW1
IN10_L
IN7_R
IN4_L
MCK
LRCK
BCK
PDN
11
12
5
6
9
8
11
10
12
13
IC8602
SCL
BCKO
LRCKO
MCK
DATAI
IC8603
AUDIO PROCESSOR
LEVEL
SHIFT
SDA
5
6
6
5
PF_SCLK
PF_SDAT
Q8601
25
30
32
31
DATA0
X1
X0
RST
10
11
9
10
8
6
4
5
11
13
12
3
1
2
RESET
13
D5V-2
IC8606
1
2
AOUTL
PDN
AUDIO DAC
IC8605
DATA
BCK
LRCK
MCK
AOUTR
AUDIO PROCESSOR
IC8612
INA
INB
OUTA
OUTB
SCLK
SDAT
17
16
PF_SCLK
PF_SDAT
5
6
3
2
8
31
1
7
7
1
5
6
2
3
3
2
6
5
1
7
BUFFER
IC8608
IC8607
TO 1/2
4
R
L
J8302
Q8604
Q8605
2
TO 1/2
7
6
5
4
3
6
5
IC8616
3
2
15
14
13
12
11
1
7
Q8610
Q8609
35
33
LOUT2
ROUT2
FIX_L
FIX_R
IN6_L
IN6_R
16
17
1
2
3
SET9V
Q8320
BIAS
SW
IC8307
11
12
14
15
4
1
5
2
BIAS
Q8319
SET9V
SET9V
13
3
10
9
Q8321
6
5
7
IC8305(2/2)
L_MUTE
A_MUTE
HP_SW
O_A_MUTE
P_MUTE1
HP_MUTE1
IC8615
6
5
3
2
7
1
7
5
6
1
2
3
IC8617
7
6
1
MUTE SW
Q8613-Q8615
Q8607
Q8608,Q8611
SET9V
Q8726
D8725
D8720
D8719
D8718
P_MUTE1
A_MUTE
O_A_MUTE
L_MUTE
HP_MUTE1
Q8617
Q8618
Q8616
Q8612
IC8614
IC8618
Q8301
Q8302
FIX_L
FIX_R
IC8305(1/2)
T8301
11
1
IC8604
3
4
5
3
2
6
11
10
2
37
AUDIO L
AUDIO R
AUDIO L
AUDIO R
AUDIO L/R
2
1
ATT_SW
9V
CN8201
SET9V
L1
13
2
CM_R2
R2
CM_L1
IN9_R
IN1_R
SDA
SCL
32
31
13
4
10
IC8611
SET9V
Q8606
BIAS
2
SPDIF_TX
CN8003
VINL
VINR
SCL
SDA
DATAO
BCKO
WSO
RESET
IC8015
AUDIO ADC
17
18
PF_SCLK
PF_SDAT
RESET
Q8621
SET3.3V
5
DAUX
BICK
LRCK
XTI
XTO
SCL
SDA
TX1
PDN
30
29
X8009
12.288MHz
9
7
8
IC8018
DIGITAL AUDIO
TRANCEIVER
16
34
33
SDA
SCL
SET9V
Q8620
Q8619
LINE MUTE
D8617
HP L
HP R
HP_SW
INITIAL MUTE SWITCH
C(+)
C(-)
2
1
CENTER-
CENTER+
CN8302
10
9
7
4
3
2
1
FAN H/L
FAN ON/OFF
MS DET
FAN-ERR
AC RLY
P SW(-)
AC DET
CN8702
7
5
3
1
STBY5V
33V
A5V
D5V
CN8703
CN8704
SET11V
SET11V
REG SW
MS11V
1
2
5
6
3
SET9V
CN8705
AC DET
PSW
AC RLY
D5V-2
SET5V-3
TU33V
STBY5V
SET11V-2
SET9V
VCC
VOUT
VOUT
VOUT
VOUT
2.5V REG
IC8204
IC8203
3.3V REG
IC8202
DC/DC CONVERTER
6
1
1
SET3.3V-2
3.3VD
L8211
L8212
11
12
13
14
2
2
SET2.5V
MS3.3V
13
12
10
8
7
6
4
3
2
1
SDA
SCL
STBY 5V
P_ON
P_SW
KEY1
KEY2
UPD_LED
LOGO_LED
KEY_WAKE
CN9502
1
2
3
4
6
7
8
10
12
13
CN8701
STBY5V
LED_SCL
LED_SDA
13
12
11
10
9
7
6
5
4
3
2
FAN ON/OFF
FAN H/L
FAN_ERR
RESET_4114
AC_DET
KEY_WAKE
LOGO_LED
POWER_LED
KEY2
KEY1
P_ON
CN8005
POWER LED
PSW
POWER LED
AC DET
RESET_4114
TO
J1 BOARD
CN1804
4
2
1
KEY2
KEY1
KEY_WAKE
CN9501
1
2
3
S9500
STBY5V
IC9600
LED DECODER
SCL
SDA
DAC4
DAC3
DAC2
DAC1
DAC0
15
14
3
4
5
6
7
LED
DRIVER
DRIVER
LED
Q9502-9504
Q9600-9604
Q9606
D9600-9602
D9604,9605,9607
D9527
D9523
H1(2/2)
(KEY IN/LED)
1
3
KEY1
KEY_WAKE
CN9701
S9700,
S9702-9706
CN9700
H2
(KEY IN)
CN9800
KEY_WAKE
KEY1
3
1
S9800-9806
(KEY IN)
H3
VIDEO
AUDIO
VIDEO OUT
(VAR/FIX)
5
TO 1/2
WOOFER_MUTE
A(2/2)
(AUDIO PROCESSOR)
HP_SW
SET9V
Q8091,8092
RESET
31
RESET_4114
TO
ANT SW
Q8209
TO
G BOARD
CN6005
CN6003
G BOARD
TO
TO
G BOARD
CN6004
CN6002
G BOARD
TO
PF_SCLK
PF_SDAT
A
B
X8601
36MHz
28
26
24
CN1802
2
1
+
-
CN9900
SPM
CENTER
SPEAKER
J9900
B
C
D
E
G
F
TO
M(1/2)BOARD
CN3402
(2)
A(2/2), H1(2/2), H2, H3 and SPM Boards
Click on the first or last page to see other KE-MR50M2 service manuals if exist.