(with price)
QV-10B(KX-720B)
JUL. 1995
R
CONTENTS
SPECIFICATIONS ......................................................................................... |
1 |
BLOCK DIAGRAM ........................................................................................ |
2 |
CIRCUIT OPERATION .................................................................................. |
3 |
ADJUSTMENT ............................................................................................. |
13 |
DISASSEMBLY AND ASSEMBLY .............................................................. |
17 |
PRINTED CIRCUIT BOARDS ..................................................................... |
18 |
ELECTRICAL PARTS LIST......................................................................... |
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MECHANICAL PARTS LIST ....................................................................... |
30 |
EXPLODED VIEW ....................................................................................... |
31 |
PARTS LIST FOR ACCESSORIES ............................................................. |
32 |
REPAIR METHOD ....................................................................................... |
33 |
SCHEMATIC DIAGRAMS ........................................................................... |
35 |
WAVEFORMS.............................................................................................. |
38 |
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SPECIFICATIONS |
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Item |
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Specification |
1. |
Recording System |
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Digital (JPEG based)/Field recording |
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2. |
Signal System |
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NTSC |
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3. |
Recording Medium |
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Built-in 16-Mbit flash memory |
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4. |
Number of pages |
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96 |
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5. |
Delete Functions |
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Single page; All pages (with page protect feature) |
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6. |
Imaging Device |
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1/5-inch CCD (Total Number of Pixels: 250,000) |
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7. |
Lens |
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Fixed focus with macro position; F2/f = 5.2mm |
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8. |
Aperture |
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F2/F8 manual switching |
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9. |
Focal Length |
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F2/NORMAL : 60cm to 310cm; |
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F2/MACRO |
:13cm to 16cm |
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F8/NORMAL |
:28cm to ∞; |
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F8/MACRO |
:10cm to 24cm |
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(from lens protection filter) |
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10. |
Light Metering |
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TTL center point by photographic element |
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11. |
Exposure Metering |
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Aperture priority AE |
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12. |
Exposure Range |
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EV +5 to 18 |
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13. |
Exposure Adjustment |
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-2EV to +2EV |
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14. |
Shutter System |
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Electronic |
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15. |
Shutter Speed |
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1/8 to 1/4000 second |
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16. |
White Balance |
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Automatic |
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17. |
Self-timer |
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10-second |
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18. |
Monitor |
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61,380-pixel 1.8-inch TFT low-glare color LCD; |
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doubles as finder |
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19. |
Terminals |
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DIGITAL; VIDEO OUT; DC IN 6V |
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20. |
Power Supply |
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Batteries (AA-size Alkaline batteries X 4)/AC Adap- |
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tor (AD-C60) |
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21. |
Battery Life |
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Approximately 120 minutes |
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22. |
Dimensions |
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66(H) X 130(W) X 40(D)mm / |
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2.6" (H) X 9" (W) X 1.6" (D) |
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23. |
Weight |
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Approximately 190g / 6.7oz (excluding batteries) |
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24. |
Accessories |
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Wirst strap; soft case; special video cable; AC adap- |
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tor (AD-C60) Alkaline batteries (LR6 X 4); cleaning |
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cloth; owner's manual; personal computer connec- |
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tion kit |
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— 1 —
BLOCK DIAGRAM
1Camera PCB 2Digital PCB |
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V RAM |
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CCD |
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Gate Array |
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HM53812BJ8 |
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HG51B167FB |
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Flash
Memory
TC5816FT-1
D RAM
HM514B00
ALJ8
CPU
HD6477034F16
Power Supply
Circuit
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DC IN (6V) |
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Key |
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AC adaptor |
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Key PCB |
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Battery x 4 |
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3 Linear PCB
IC300
IR3P90Y
LCD
IC400
MSM6770GS
5 VIDEO OUT (Video I/O)
6DIGITAL (Serial I/O)
1 Camera Unit: It is used to provide color information.
2 Digital PCB: It controls the CCD, compressed data, stores image in memory.
3 Linear PCB: It generates the tricolor and controls the LCD display.
4 LCD: 61,380-pixel 1.8-inch Thin Film Transistor low-glare color LCD.
5 VIDEO OUT(Video I/O): Use this terminal when connecting to the VIDEO IN terminal of a TV, video tape deck, video printer, or other similar device.
6DIGITAL (SERIAL I/O): Use this terminal when connecting to a personal computer.
—2 —
CIRCUIT OPERATIONS
CAMERA UNIT (CAMERA PCB)
The camera unit is composed a lens, color filter, CCD (IC802), driver (IC800) and signal processor (IC802). It produces voltages R, B, and G, for the colors red, blue, and green when light from a scene is focused on the surface. These voltage values vary according to the intensity of the respective color being scanned.
The camera unit must be replaced with whole unit when it is defective, because the precise adjustment is required when the individual parts are replaced, and can be done only at our factory.
1 Lens
2 Color
Filter
Camera PCB |
Digital PCB |
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4 IC801 |
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Data Bus |
3 IC802 (CCD) |
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Ye,Cy,Gr |
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color signal |
Sample Hold, |
8bit A/D |
D0 ~ D7 |
CCD IN |
AGC |
Converter |
D RAM |
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PHI1~PHI4 |
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PHS1~PHS4 |
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IC800 |
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Driver |
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VI1~ VI4 |
Timing |
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CPU |
Generator |
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MCK, |
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VS1 ~ VS4 |
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HRS2, |
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FTTRG, |
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STTRG, |
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CCODE, |
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ENDFLG |
1 Lens
Concentrates light rays to a point.
2 Color filter
The striped color filter in front of the CCD detector is used to provide color information. It has three colors, yellow, green and cyan.
Array of color filter and signal processing (IC801) for camera are extremely close relationship.
1 2 3 ~ 506 507 508
Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Ye |
G |
Cy |
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Red
Ye=Red+Green |
Mg=Blue+Red |
Ye Mg
White
Cy
Green Blue
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Cy=Blue+Green |
Array of color filter |
Three Primary colors |
— 3 —
3 CCD (IC802)
A charge-coupled device in which charges are introduced when light from a scene is focused on the surface of the device. The image points are accessed sequentially to produce a television-type output signal.
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532(H) |
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508(H) |
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3 |
PHI4 |
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PHI3 |
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PHI2 |
Image pickup |
500(V) 492(V) |
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6 |
PHI1 |
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PHIS4 |
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PHIR 7 |
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Storage |
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PHIS1 |
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PHIS2 |
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PHIS3 |
16 |
VDD 8 |
.Amp |
Output |
Horizontal shift |
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Vout 9 |
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register (CCD) |
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PHIH2 |
PHIH1 |
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VGG |
VOG |
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13 |
14 |
15 |
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4 Camera Signal Processor (IC801)
Effective picture element: 249,936 = 508 (H) x 492 (V)
PHIS1~PHIS4:
Clock pulse for the storage.
PHI1~PHI4:
Clock pulse for the image pickup.
PHIH1~PHIH2:
Clock pulse for the horizontal shift register.
PHIR:
CCD analog signal output.
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Sample Hold, |
8bit A/D |
D0~D7 |
From CCD |
AGC |
Converter |
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Timing |
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to CCD |
Generator |
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From/to CPU |
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D0~D7:
Digital signal of the luminance and the color difference B-Y and R-Y signal.
CCD IN:
CCD analog signal input.
VI1~VI4/VS1~VS4:
Clock pulse for the CCD control signal.
Sample Hold
Selects a desired signal from the CCD.
Timing Genarator
Generates the clock pulse for the CCD.
8-bit AD converter
Analog signal from the CCD is converted into 8-bit digital signal of the luminance and the color difference B-Y and R-Y signal. .
— 4 —
DIGITAL PCB
Camera PCB |
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IC802 |
IC801 |
2IC700 Gate Array |
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CCD |
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3IC701 |
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IC800 |
Processor |
Control |
V RAM |
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Timing |
Control |
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Driver |
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1M |
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V RAM |
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Encoder |
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4IC602 |
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Data |
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Compre- |
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Amp. |
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16M Flash Memory |
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ssor |
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D/A |
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DIGITAL PCB |
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1IC600 Microprocessor |
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ROM |
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RAM |
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Linear |
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PCB |
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DMAC |
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5IC601 |
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IC300 |
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4M D RAM |
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Chroma |
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+5V +18V -10V |
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CPU |
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BSC |
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Circuit |
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IC400 |
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6 |
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SCI, Timmer |
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Display |
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Power Supply |
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I/O Port |
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Control |
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DC in +6V
Key Input
Battery
VIDEO OUTPUT
(Video I/O)
TFT LCD
DIGITAL (Serial I/O)
Digital PCB is composed Microprocessor (IC600), D RAM (IC601), Flash Memory (IC602), Gate Array (IC700), and V RAM (IC701).
Microprocessor controls the CCD, D RAM, Flash Memory and key operation. Gate array compresses data for the color and the luminance from the CCD to increase the number of memory, and up to 96 images can be stored in flash memory. The color and the luminance data are mixed in the gate array to make the video signal.
As to spare parts for digital PCB, Casio supplies PCB ass'y and the individual parts.
— 5 —
1 CPU (IC600)
Controls the CCD, D RAM, Flash memory and key operation.
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PA15 ~ PA0 |
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CS3 ~ CS0, A21 ~ A16 |
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Port A |
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Address |
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Reset, |
PROM/MASKROM1 |
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RAM1 |
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MD2 ~ |
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MD0, |
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EXTAL, |
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Address |
XTAL |
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CK |
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Direct memory |
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CPU |
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access |
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controller |
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Interrupt |
User break |
Direct state controller |
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controller |
controller |
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Serial communication |
16-bit integrated |
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interface (x2channel) |
timer pulse unit |
Data/Address |
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Programmable timing |
A/D |
Timer |
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pattern controller |
converter |
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Port C |
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Port B |
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A15 ~ A0
AD15 ~ AD0
PC7 ~ PC0 |
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PB0 ~ PB15 |
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Address bus 24-bit |
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Address bus 24-bit |
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Data bus 16-bit |
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High-order 8-bit |
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Low-order 8-bit |
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— 6 —
CPU PIN FUNCTION
Pin No. |
Terminal Name |
IN/OUT |
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Function |
1 |
PB14 |
OUT |
Timing pattern output. |
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PB15 |
- |
Not used. |
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3 |
VSS |
IN |
Ground terminal. |
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4 - 11 |
AD0 - AD7 |
IN/OUT |
Address bus. |
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12 |
VSS |
IN |
Ground terminal. |
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13 - 14 |
AD8 - AD9 |
- |
Not used. |
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15 |
VCC |
IN |
Power source. |
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16 - 21 |
AD10 - AD15 |
- |
Not used. |
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22 |
VSS |
IN |
Ground terminal. |
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23 - 30 |
A0 - A7 |
OUT |
Address bus. |
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31 |
VSS |
IN |
Ground terminal. |
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32 - 33 |
A8, A9 |
OUT |
Address bus. |
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34 - 39 |
A10 - A15 |
- |
Not used. |
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40 |
VSS |
IN |
Ground terminal. |
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41, 42 |
A16, A17 |
- |
Not used. |
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43 |
VCC |
IN |
Power source. |
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44 - 47 |
A18 - A21 |
- |
Not used. |
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48 - 50 |
CS0 - CS2 |
- |
Not used. |
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51 |
CASL |
OUT |
CAS(Column Address Strobe) signal for D RAM. |
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52 |
VSS |
IN |
Ground terminal. |
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53 |
PAO |
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Not used. |
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54 |
RAS |
OUT |
RAS(Row Address Strobe) signal for D RAM. |
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55 |
CS6 |
OUT |
Chip select signal. |
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56 |
WAIT |
- |
Not used. |
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57 |
WR |
OUT |
Write enable signal for outer memory (low-order 8-bit). |
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58 |
PA5 |
OUT |
Write enable signal for outer memory (high-order 8-bit). |
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59 |
RD |
OUT |
Read enable signal for outer memory. |
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60 |
PA7 |
- |
Not used. |
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61 |
VSS |
IN |
Ground terminal. |
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62 |
PA8 |
IN |
Bus request signal. |
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63 |
PA9 |
OUT |
Interrupt |
request |
signal. |
64 - 66 |
PA10 - PA12 |
- |
Not used. |
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67 |
DREQ0 |
IN |
Interrupt |
request |
signal. |
68 |
IRQ2 |
IN |
Interrupt |
request |
signal. |
69 |
PA15 |
IN |
Interrupt |
request |
signal. |
70 |
VCC |
IN |
Power source. |
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71 |
CK |
OUT |
System clock pulse. |
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72 |
VSS |
IN |
Ground terminal. |
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73 |
EXTAL |
IN |
Clock pulse input. |
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74 |
XTAL |
- |
Not used. |
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75 - 77 |
VCC, NMI, VPP |
IN |
Power source. |
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78 |
WDTOVF |
- |
Not used. |
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79 |
RES |
IN |
Reset signal input. |
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80 |
MD0 |
IN |
Ground terminal. |
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81 |
MD1 |
IN |
Connected to VCC3. |
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82 |
MD2 |
IN |
Connected to ground. |
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83, 84 |
VCC |
IN |
Power source. |
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— 7 —
Pin No. |
Terminal Name |
IN/OUT |
Function |
85, 86 |
AVCC, AVREF |
IN |
Connected to VCC3. |
87 - 89 |
PC0 - PC2 |
IN |
Key input terminal. |
90 |
PC3 |
IN |
Low battery detection terminal. |
91 |
AVSS |
IN |
Ground terminal. |
92 - 95 |
PC4 - PC7 |
- |
Not used. |
96 |
VSS |
IN |
Power source. |
97, 98 |
PB0, PB1 |
IN/OUT |
Port B. |
99 |
VCC |
IN |
Power source. |
100 - 105 |
PB2 - PB7 |
IN/OUT |
Port B. |
106 |
VSS |
IN |
Ground terminal. |
107 |
RXDO |
IN |
Data input terminal from a personal computer. |
108 |
TXDO |
OUT |
Data output terminal to a personal computer. |
109, 110 |
PB10, PB11 |
IN/OUT |
Port B. |
111 |
PB12 |
- |
Not used. |
112 |
PB13 |
- |
Not used. |
2 Gate Array (IC700)
Control |
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V RAM |
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Control |
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Timing |
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V RAM
Encoder
Data
Compressor
D/A
Data Compressor
The color difference and the luminance data is compressed about 1/7 to increase the numer of images in memory. Up to 96 images can be stored.
Y (luminance siganal) data |
: 480 x 224 byte |
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Cb (color difference signal B-Y) data |
: 160 x 112 byte |
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21,120 byte |
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Cr (color difference signal R-Y) data |
: 160 x 112 byte |
1/7 |
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Total: 143,360 byte |
21,120 byte |
Encoder
The color and the luminance data are mixed internally to make the video signal, and send it to the linear PCB and the video out terminal.
— 8 —
3 V RAM
It is used for encoder function.
4 Flash Memory
Up to 96 images can be stored in memory. Flash memory does not require electrical power to store data, so image data is retained in memory even when you turn camera power off. If batteries go dead, simply load a set of new batteries or connect the AC adaptor and you will be able to view images in camera memory.
Memory Map
Header |
Image data |
Color |
record |
Max; 96 images |
Information |
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5 D RAM
There is area of work space that the microprocessor uses for storing temporary data , the intermediate results of calculations, and all sorts of pieces of information that the system needs to remember.
6 Power Supply |
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Terminal |
Voltage |
Purpose |
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VCC3-0 |
4.75 |
~ 5.15 (V) |
Logic |
circuit |
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VCC3-1 |
4.70 |
~ 5.15 (V) |
Video output |
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VCC3-2 |
4.60 |
~ 5.15 (V) |
Digital |
I/O |
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VCC6 |
17.80 ~ 18.20 (V) |
CCD |
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VEE3 |
-9.6 ~ -10.6 (V) |
CCD |
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KEY PCB
Block Diagram |
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BUTTON |
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RESISTOR |
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CPU |
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KEY 0 |
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87 pin |
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VCC3-1 |
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KEY 1 |
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88 pin |
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KEY 2 |
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89 pin |
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Key Matrix |
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VOLTAGE |
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BUTTON |
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RESISTOR |
KEY MATRIX |
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CPU |
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VCC3-1 |
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Shutter |
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R900(1.8K) |
KEY0 |
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87pin |
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VCC3-1 |
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R901(15K) |
KEY0 |
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87pin |
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VCC3-1 |
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MODE |
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R902(1.8K) |
KEY1 |
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88pin |
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DISP |
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R903(4.7K) |
KEY1 |
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88pin |
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VCC3-1 |
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ZOOM |
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R904(10K) |
KEY1 |
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88pin |
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VCC3-1 |
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SELF |
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R905(27K) |
KEY1 |
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88pin |
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VCC3-1 |
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R906(1.8K) |
KEY2 |
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89pin |
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VCC3-1 |
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DEL |
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R907(15K) |
KEY2 |
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89pin |
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— 9 —
LINEAR PCB
IC300 generates the tricolor (red, green and blue) from the video signal, and IC400 controls the TFT-LCD display.
Power Supply
Terminal |
Voltage |
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Purpose |
VCC2 |
4.3 ~ 4.7 (V) |
Logic circuit |
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VCC4 |
9.5 ~ 11.0 |
(V) |
Display |
VEE2 |
-7.0 ~ -8.0 |
(V) |
Display |
VEE4 |
-16.5 ~ -17.9 (V) |
Display |
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IC300 |
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H.F.OUT |
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TRAP |
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SEP-SYNC |
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OUT-SYNC |
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IN-SYNC |
CONST-TIME |
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CLAMP |
COLOR |
APL |
AGC.FIL OUTAGC |
PICTURE |
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DCDET |
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OUT-R |
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OUT-G |
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18 |
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15 |
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19 20 |
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16 |
11 |
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14 13 |
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35 32 |
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Vref |
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SYNC SEP |
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BGP GEN |
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AGC DET |
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VIDEO |
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H filter |
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10 |
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Trap |
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D.L |
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CLAMP |
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AGC AMP |
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F ADJ |
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INV |
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INV |
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INV |
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41 |
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12 |
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ACC |
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BPF |
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Color control |
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||||||||||||||||||||||
ACC.F |
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γ corrector |
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Picture |
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γ corrector |
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9 |
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ACC DET |
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quality |
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|||||||||||
APC.F |
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ADJ. |
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γ corrector |
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46 |
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27 |
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APC |
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Killer |
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24 |
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SWP GEN |
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Killer.F |
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26 |
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VCO |
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L |
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Matrix |
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INT/EXT |
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R Gain |
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Clamp |
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40 |
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||||||||||||||||||||||||||||||||||
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Demodulation |
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P |
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||||||||||||||||||||||||||||||||||||||||||||||||||||
VCO |
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||||||||||||||||||||||||||||||||||||
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Contrast |
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SW |
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|||||||||||||||||||||||||||||||||||
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F |
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Bright |
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||||||||||||||||||||||
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B Gain |
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|||||||||||||||||||||
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|||||||||||
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TINT |
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|||
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VEE |
VCC1 GND VCC2 VEE |
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42
RGB. AMP
44
γ 2
45
γ 1
RGB.
INV 39 FRP
28
COM. AMP
25 |
7 |
6 |
29 |
33 |
31 |
2 |
5 4 |
3 1 |
48 |
47 |
43 |
30 |
TINT |
YEE |
VCC1 |
GND |
VCC2 |
VEE |
CONT |
EXT-R EXT-G |
EXT-B SW |
-SUB-RCONT |
-SUB-BCONT |
BRIGHT |
COM.OUT |
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— 10 — |
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