Arcam DiVA AVR200 - Page 41

SURROUND SOUND RECEIVER
AA
AA
VV
VV
RR
RR
22
22
00
00
00
00
- 48 -
TUNER BOARD
U901: LA1837
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ALC
AM
OSC
AM
MIX
AM
RF.AMP
REG
AGC
AM IF
AM
S-METER
TUNING
DRIVE
STEREO
DRIVE
V
CC
V
CC
AM/FM
IF-BUFF
FM
S-METER
S-CURVE
AM IF
FM
DET
GND
FM IF INPUT
AM MIXER
OUTPUT
FM IF INPUT
BYPASS
AM IF INPUT
GND
TU-LED
ST LED
AM-IF OUTPUT
FM DETECTOR
AM NARROW CF
FM S-METER
OUTPUT
AM S-METER
OUTPUT
MUTE
FM/AM
SWITCH
PILOT V
CO
SD
COMP
DET
BUFF
DECODER
ANTI-BIRIDE
3 rd 5 th
STEREO
SW
MUTE
VCO
304kHz
FF
38k
P-DET
Ø
FM SD ADJ OSC REG AM RF INPUT AFC AM AGC AM DETECTOR INPUT FM DETECTOR OUTPUT MPX IUTPUT MPX OUTPUT MPX OUTPUT AM STEREO L INPUT AM STEREO R INPUT L-OUT R-OUT
FF
19k
FF
19k
PILOT
DET
S-VIDEO BOARD
U402, U403: LC74763-9012
8CS
9SIN
10SCLK
15RST
11SECAM
12525/625
13NTSC/PAL
143.58/4.42
Serial
Parallel
Converter
Composite
Synchron-
ization
Singal
Control
AFC
Circuit
Sync
Separator
8-bit Latch
and
Command
decoder
Horizontal
Character
Size Register
Horizontal
Display
Position
Register
Vertical
Display
Position
Register
Horizontal
Display
Position
Detection
Vertical
Display
Position
Detection
Character
Control
Counter
Timing Generator
Sync
Separator
Horizontal
Display
Position
Detection
Synchronization
Signal Generator
Character Output Control
Background Control
Video Output Control
Line
Control
Counter
Flashing/
Reversal
Control
Register
Flashing/
Reversal
Control
Circuit
Display
Control
Register
RAM Write
Address
Counter
Display
RAM
Decoder
Decoder
Font
RAM
Shift Register
Vertical
Character
Size Register
Horizontal
Size
Counter
Vertical
Size
Counter
Horizontal
Dot
Counter
Vertical
Dot
Counter
30VDD1
17VDD2
22VSS
29SYNCDET
27VCOIN
28VCOOUT
26FC
20SYNIN
24AMPIN
25AMPOUT
23PDOUT
21SEPC
4
HSYNOUT
7
VSYNOUT
2
XTALIN1
3
XTALOUT1
19
CVCR
16
CVOUT
18
CVIN
5
XTALIN2
6
XTALOUT2