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3. AV MODES
MODE
(sequence)
TV
AV1
AV2
AV3
AV4
FRONT
PC
4. AV BOARD DESCRIPTION
AVC Block Diagram
4.1.
Local keys (6)
Front AV in
(CVBS+Y/C, L/R)
Head Phone in
SCART101
(CVBS+Y/C, L/R, AV Link)
(TV out)
SCART102
(CVBS+RGB, L/R)
(Monitor out)
SCART100
(CVBS+RGB, L/R)
(Monitor out)
Y/C plug
Y/C Out
Phono
CVBS Out
Line Out (L/R)
(fixed level)
RF input
Power supply
for AVC
100-240V
Tuner/Video Chroma (Schematic Sheet 1)
4.2.
VHF/UHF asymmetric type tuner converts RF input signal to IF signal output through pin 11. AGC voltage
is supplied at pin 1 from IC100 pin 62. IF output goes through buffer Q101 to SAW filter SAW100 for VIF at
pin 2 and 3 of IC100 and to SAW101 for SIF at pin 63 and 64.
AV3000 AVC Unit Service Manual
14/08/2002
RF Tuner-in
SCART1 (CVBS/YC-in)
SCART2 (CVBS/RGB-in)
SCART3 (CVBS/RGB-in)
YCbCr/YPbPr
FRONT AV (CVBS/YC-in)
PC (PC in) * sound from AV3 or AV4
Front Panel Board
10-WAY
AVC MAIN Board
Control items
Picture
Comb
Sound
Headphone Volume/Balance
OSD/TELETEXT
Advanced OSD
(this OSD cannot be
displayed in PC mode)
19-WAY
Power Supply Board
PDP
SCART1
Monitor
Output
RF
RF
AV1
RF
AV2
RF
AV3
RF
AV4
RF
FRONT
RF
PC
RF
AV Controller
FC4 Board
Control items
Picture (at FC)
Colour saturation
Tint (hue)
Black stretch
Noise reduction
50-WAY
Wide format
Brightness
PC related
Simple OSD
(for use with PC)
7-WAY AND 9-WAY
2
SCART2
SCART3
Output
Output
Output
RF
RF
AV1
AV1
AV2
AV2
AV3
AV3
AV4*
AV4*
* TDA9321 the same input as FRONT
FRONT
FRONT FRONT FRONT
FRONT
FRONT FRONT FRONT
PDP Monitor
Control items
DVI-24
CTI
LTI
DIN 8
OSD
I/Rin
LINE
CVBS/
YC-out
RF
RF
AV1
AV1
AV2
AV2
AV3
AV3
AV4*
AV4*
SPEAKER
Common
Picture
Contrast
White Balance
Sound
SPEAKER
Volume
Balance
Bass
Treble
Common
Spatial effect
TruBass
Power supply
for PDP display
100~240V
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Troubleshooting
