Sanyo 28H1, Service Manual, Page: 3 / 80

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Service Manual EH1 chassis
This is a diagram for all models and therefore differs slightly from the actual block diagram.
Tuner
IF
stage
A2 stereo
decoder
NICAM
decoder
Audio
Processor
3D surround
processor
Audio
output
Speakers
AV selector
Video
chroma
deflection
demodulator
Double
scan
converter
Video
Aperture
Control &
Matrix
Video
output
System
Control
CPU
memory
teletext
decoder
H/V sync.
driver
Vertical drive
&
waveform
controller
Vertical
output
Horizontal drive
&
output
I
2
C bus
D/A
High-voltage
CRT
Volume Bass Treble Balance Mute
AV mode
I 2
C Bus control
H-Centring
V-Centring
SIF carrier
L, R
L, R
L, R
L, R
L, R
L, R
L, R
AV4(Front)
(Scart)
AV1
AV4
AV3
AV2
Y/CVBS
C
Y
H/V sync
R-Y
B-Y
2Y
2R-Y
2B-Y
VD
HD
VD
H-Drive
V-drive
DY
R
G
B
IK
H.V
RGB
Colour Brightness Contrast Tint Sharpness
CIRCUIT DESCRIPTION
Outline