ImageQuest Q770 - Block Diagram

Q770 Technical Service Manual
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3 - BLOCK DIAGRAM
TDA9116
Horizontal
VCO
Phase/frequency
comparator
Horizontal position
Lock detection
PLL1
V-sync detection
Input selection
Polarity handling
Vertical oscillator
with AGC
S-correction C-correction
PLL2
Phase comparator Phase shifter H duty controller
Pin cushion asymm. Parallelogram Hor. duty cycle
H-drive
buffer
Int. H-moiré ctrl.
H-moiré amplitude
V-sync
extraction
& detection
Geometry
tracking
V-dynamic
correction
(focus, bright.)
VDyCor amplitude
H-sync
detection
Polarity
handling
V-blank
H-lock
3
HLckVBk
Safety
processor
25
XRay
11
HMoiré
32
VDyCor
19
VOscF
21
VGND
2
VSyn
27
GND
26
HOut
5
HPLL2C
12
HFly
4
HOscF
6
C0
8
R0
9
HPLL1F
10
HPosF
7
HGND
H/HVSyn
1
I
2
C Bus
interface
31
SDA
SCL
30
Supply
supervision
Reference
generation
13
RefOut
29
Vcc
I
2
C Bus registers
B+
DC/DC
converter
controller
B+ ref.
28
BOut
16
BISense
15
BRegIn
14
BComp
VAGCCap
20 22
VCap
V-ramp control Tracking EHT
Vertical size Vertical position Vertical moiré
18
VEHTIn
23
VOut
17
HEHTIn
EW generator
Pin cushion Keystone Top corners Bottom corners
24
EWOut
Internal
ref.
: Functions controlled via I
2
C Bus
H size
Ext. H-moiré / DC ctrl.
Control voltage level