Block Diagram - JVC AV28BH7ENS Service Manual

BLOCK DIAGRAM

IF STAGE(ON MAIN BOARD)
2
TUNER (PLL) IF TDA 4470
L MODE_ SW
LED &
KEYBOARD
L/L'
MODE SW
MUTE
A0-A17 18
27W401
(EPROM)
D0-D7 8
(uCONTROLLER)
SDA
SCL
24W32
(E 2 PROM)
VS2 HS2
I2C BUS ADRESSES
Terresterial Tuner
TEA6415
MSP 34XX
DPL3519
VPC3215
CIP3250
SDA9400
DDP3310B
SDA9488
No.51967
AV28BH7ENS / AV28BH7ENB
AV28BH7EPS / AV28BH7EPB
AV28BH7EES / AV28BH7EEB
SOUND BOARD AND AV SWITCHING BOARD
SCART 1 SCART 2
CVBS OUT
SVHS_Y
QSS OUT
C
MONO OUT
S1 IF S2
TEA6415C
(Video Switching
Matrix)
Text_CVBS
Vin2
SDA5550M
SCL
VPC3215
SDA
R G B FB
OSD
(R,G,B,FB)
4
C0
06
80
84
8E
DC
BC
BA
D6
AV28BH7ENS / AV28BH7ENB
AV28BH7EPS / AV28BH7EPB
AV28BH7EES / AV28BH7EEB
HEADPHONE
Back_AV Front_AV
SVHS
L
TDA1308
R
SVHS_C
SVHS_Y
Back_V Back_A Front_V Front_A
SC2_R(Scart2_C)
C
MONO IN QSS
S2 S1
C_SW
MSP 34XX
L R
MAIN_R
MAIN_L
FEATURE BOX
VGA
Connector
MODULE
V VGA , HVGA
SDA
LUMA_VPC
LUMA
8 8 SCL
CHROMA_VPC
CHROMA
8 8
U / V (LUMA)
CIP3250 DDP3310B
SYNC/CT SDA9400
6
3
8
LLC1
YUV(CHROMA)
2
LLC1/LLC2 HS2 VS2
2
SYNC / CT
2
LLC1/ LLC2
4
2-3 2-4
MUTE
MUTE/ST.BY
LOGIC
ON/OFF
TDA7265
HORIZONTAL
H-PROT
FLYBACK
R
12V
G
Horz.
Yoke
B
4
SVM
+130V
Lin.
E/W E/W
HORIZ.
DRIVE DRIVE
-Vert.Sup
EW
-Vert.Sup
VERT.+
VERT.-
FREQ.SEL.
CRT BOARD
TDA6111
Heater
TDA6111
CI
4
TDA6111
SVM
VERTICAL STAGE
STV9379FA
Vert.
Yoke
(VERT. OUT)
ON/OFF
LINE
FILTER
VOLTAGE
TDA16846
No.51967
R
L
30KV
FOCUS
SCREEN
Heater
30KV
G2 FOCUS
SWM
COIL
+145V
+5V
+8V
REG. +12V
+5V_STBY