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BLOCK DIAGRAM (7)
IC7404
A/D CONVERTER
CN7400
R
RIN
G
GIN
B
RGB
BIN
I2C_SDA_X
I2C_SDA_X
SDA
I2C_SCL_X
I2C_SCL_X
SCL
8 PC IN
IC7405
EEPROM
J7400
AUDIO
SDA_X
SDA
SCL_X
SCL
CN7952
L
L
7
R
R
6
TO
PD BOARD
Y
CN9504
Y
13
PB
11
NC
9
PR
NC
SDA_X
SDATA
4
SCL_X
SCLK
3
CN7003
PC_R
A1
PC_L
A2
ATSC_R
ATSC_R
A3
ATSC_L
ATSC_L
A4
R
HDMI_R
A5
L
HDMI_L
A6
Y
HDMI_Y
A7
MTU_R
MTU_R
A8
MTU_L
MTU_L
A9
MTU_V
A10
CVY_MAIN
CVY_MAIN
A11
M-H
TU_H_MAIN
A12
SUB_Y
SUB_Y
A13
SUB_C
SUB_C
A14
S-H
TU_H_SUB
A15
AFT_SUB
AFT_SUB
A16
AD_RST
AD_RST
A17
AD_MUTE
AD_MUTE
A18
LINE_MUTE
LINE_MUTE
A19
SIRCS
SIRCS
A20
TO
USER_RXD
DSU BOARD
USER_RXD
A21
USER_TXD
CN2006
USER_TXD
A22
I2C_SDA
I2C_SDA
A23
I2C_SCL
I2C_SCL
A24
I2CMSDA1
SDA1(IFP_SDA)
A26
I2CMSCL1
SCL(IFP_SCL)
A27
AC_RLY
A32
AC_RLY
A36
SW_9V
SW_9V
A37
A38
STBY5V
B38
STBY5V
A39
A41
SW3.3V
SW3.3V
B42
A45
D5V
D5V
B46
A49
ATSC_5V
ATSC_5V
A50
3
TO
SUB Y/C
DSU BOARD
(3/4)
4
TO
SYS-CTL
DSU BOARD
(1/4)
5
TO
I2C-IF
DSU BOARD
(1/4)
9
TO
DSU BOARD
(3/4)
IC7002 (2/2)
SYSTEM CONTROL
REO0-7,RO0-7
2
TO
GEO0-7,GO0-7
DSU BOARD
BEO0-7,BO0-7
(3/4)
DATA SELECT DETCT
DATA SELECTER MAIN
Q7026,7027,7036
DATA SELECTDETECT
DATA SELECTER SUB
Q7028,7029,7037
IC7006
LB ERROR
SW_5V
2
VCC
OUT
1
I_LB_ERROR
IC7004
NVM
DAT
5
IO_BDAT
CLK
6
IO_BCLK
WP
7
O_NVM_PR
Q7019
SA0
8
O_NVM_RST
Q7021
AC_RLY
Q7006,7009
BUFFER
O_AC_RLY
Q7005,7007,
7008
I_DOVP
OVP I/F
LINE MUTE
O_LMUTE2
D_OVP_M
AD_MUTE
O_AD_MUTE
S-H
I_SUB_HIN
M-H
I_MAIN_HIN
(
Supplied as the ASU/DSU block ass'y for service.
The parts on this board are not supplied individually
KEY1
KEY1
KEY2
KEY2
ILINK_LED
REC_LED
REC_LED
I_KEY1
PCSTBY_LED
PCSTBY_LED
PICOFF_LED
O_PICOFF_LED
TIMER_LED
O_TIMER_LED
STBY_LED
O_STBY_LED
POWER_LED
O_POWER_LED
LAMP_ERR_LED
LAMP_ERR_LED
Q7025
SIRCS
I_SIRCS
BUFFER
GATE
I_POWER_KEY
Q7022,7024
Q7002
KEY_WAKE
RXD_ATSC
I_RXD_ATSC
TXD_ATSC
I_TXD_ATSC
USER_TXD
USER_TXD
USER_RXD
USER_RXD
Q7004
ATSC_RST
O_ATSC_RST
MS0
O_ANT_N
MS1
O_ANT_S
I2C_SDA
IO_SDAT
Q7011,7013
I2C_SCL
LEVEL SHIFT
IO_SCLK
IC7005
BUS SWITCH
I2C_SDA_X
9
8
I2C_SCL_X
11
10
I2C_3.3_SDA
1
2
I2C_3.3_SCL
3
4
O_BUS_SW1
5,6,12,13
Q7020
IC7003
RESET
TRSTX
RST
VCC
I_RESET
4
5
SW_3.3V
POW_CTL
POW_CTL
Q7015,7017
)
DSU (4/4) SYSTEM CONTROL
– 32 –
CN7005
STBY_5V
2
STBY_5V
PCSTBY_LED
3
PCSTBY_LED
TIMER_LED
4
TIMER_LED
STBY_LED
5
STBY_LED
POWER_LED
6
POWER_LED
REC_LED
7
REC_LED
TO
LAMP_ERR_LED
LAMP_ERR_LED
H2 BOARD
8
ILINK_LED
CN1200
9
ILINK_LED
H1 BOARD
CN1600
PICOFF_LED
12
PICOFF_LED
KEY1
13
KEY1
KEY2
14
KEY2
CN7004
STBY_5V
STBY_5V
2
TO
3
SIRCS
H2 BOARD
4
NC
P_SW
CN1200
5
P_ON
CN7950
ATSC_R
2
R
ATSC_L
4
L
MTU_V
7
TO
TU1V
MTU_R
QT BOARD
9
TU1R
MTU_R
CN7901
10
TU1L
I2C_SCL_X
13
SCLK
I2C_SDA_X
14
SDAT
Q2319
CN7955
ANT_S
1
MS1
MS1
1
ANT_M
3
MS2
MS2
3
00B
ATSC_5V
4
5V
5V
4
Q2318
5
9V
9V
5
SPLITTER
ATSC_A9V
TO
QT BOARD
TO
MAIN TUNER
ASU BOARD
MAIN
SUB
SUB TUNER
VHF/UHF
CABLE
CN7951
RXD_ATSC
1
ATSC-XRD
TO
TXD_ATSC
2
ATSC_XTX
QMDV BOARD
ATSC_RST
ATSC_RST
CN7300
3
KDS-R50XBR1/R60XBR1
RM-Y914
RM-Y914

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