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R
QV-300 (B) (KX-727B)
NOV. 1996
(without price)
(For NTSC)


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CONTENTS
SPECIFICATIONS ......................................................................................... 1
BLOCK DIAGRAM ......................................................................................... 2
FLOW DIAGRAMS ........................................................................................ 3
POWER SUPPLY CIRCUIT OPERATION ..................................................... 5
TROUBLESHOOTING ................................................................................... 8
DISASSEMBLY .............................................................................................. 9
ASSEMBLY .................................................................................................. 11
PRINTED CIRCUIT BOARDS ...................................................................... 13
EXPLODED VIEW ........................................................................................ 15
PARTS LIST ................................................................................................. 16
SCHEMATIC DIAGRAMS ............................................................................ 23
WAVEFORMS .............................................................................................. 27


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-- 1 --
SPECIFICATIONS
Item
Specification
1. Recording System
Digital (JPEG based)
2. Signal System
NTSC
3. Recording Medium
Built-in 32-Mbit flash memory
4. Number of Memory Pages
FINE(VGA)
: 64 (approximately 480-kbit compressed)
NORMAL(Quarter-VGA)
: 192 (approximately 160-kbit compressed)
5. Delete Functions
Single page; All pages (with page protect feature)
6. Imaging Device
1/4-inch CCD (Total Number of Pixels: 360,000)
7. Lens
2 focal points with macro position: F2.6 f=4.9 mm/f=11.0 mm
8. Aperture
F2.6/F8 manual switching
9. Focal Length
f=4.9 mm F2.6/NORMAL
: 0.6 m (2') ~
;
f=4.9 mm F2.6/MACRO
: 9 cm (3.5") ~ 11 cm (4.3")
f=4.9 mm F8/NORMAL
: 0.3 m (1') ~
;
f=4.9 mm F8/MACRO
: 7 cm (2.8") ~ 14 cm (5.5")
f=11.0 mm F2.6/NORMAL
: 3.4 m (11.2') ~
;
f=11.0 mm F2.6/MACRO
: 52 cm (1.7') ~ 62 cm (2')
f=11.0 mm F8/NORMAL
: 1.7 m (5.6') ~
;
f=11.0 mm F8/MACRO
: 44 cm (1.4') ~ 77 cm (2.5')
10. Light Metering
TTL center point by photographic element
11. Exposure Metering
Aperture priority AE
12. Exposure Range
EV +5 to 18
13. Exposure Adjustment
-2 EV to +2 EV
14. Shutter System
Electronic
15. Shutter Speed
1/8 to 1/4000 second
16. White Balance
Automatic
17. Self-timer
10-second
18. Resolution
FINE, NORMAL
19. Monitor
61,380-pixel 2.5-inch TFT low-glare color LCD: doubles as finder
20. PC Output Image
480
× 640 dots (FINE)
240
× 320 dots (NORMAL)
21. Terminals
DIGITAL; VIDEO OUT; DC IN 6 V
22. Power Supply
Batteries (AA-size Alkaline or Lithium batteries
× 4)/AC Adaptor
23. Battery Life
LR6 (AM3) AA-size alkaline batteries
Approximately 130 minutes continuous operation (Play mode)
Recording for about 96 images (one image per minute)
FR6 AA-size lithium batteries
Approximately 220 minutes continuous operation (Play mode)
Recording for about 180 images (one image per minute)
24. Dimensions
72 (H)
× 162 (W) × 49 (D) mm/
2.8" (H)
× 6.4" (W) × 1.9" (D)
25. Weight
Approximately 250 g / 8.8 oz (excluding batteries)
26. Accessories
Wrist strap; soft case; video cable; cleaning cloth


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-- 2 --
BLOCK DIAGRAM
CCD
Camera Unit
IC700
HG51D291FE
Digital PCB
IC703
LC99092-Z03
8 bit to 16 bit
converter
Color processor
IC602
KM29V32000T
32Mbit
Flash memory
IC601
HM51W4260
4Mbit DRAM
IC701
µPD482445LGW
4Mbit VRAM
IC702
µPD6461GS
On screen
display
VRAM
contoroller
Video
encoder
D/A
converter
ROM
RAM
Direct
memory
access
controller
Bus
state
controller
Serial
communication
interface
IC600
HD6437042Y03F
Data
compressor
expander
Video out
Key PCB
A/D
converter
Lens
Digital I/O
IC300
IR3P90Y1
Chroma circuit
IC400
MSM6770CGS
Display controller
Linear PCB
Power
supply
Power
supply
AC Adaptor
Battery
Back
light
LCD
CPU
I/O
port


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-- 3 --
FLOW DIAGRAMS
REC mode
1 Exposure and Analog to Digital conversion by Camera unit
2 8 to 16 bits conversion by IC703
3 Storage for work
4 Color processing by IC703: Ye,Cy, Gr
Y, By, Ry
5 Storage for work
6, 7 Video encode by IC 700 and IC701: Y, By, Ry
Video
8 Video out
When pressing the shutter button
Camera Unit
IC703
LC99092-Z03
IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y03F
Digital PCB
1
2
3
4
5
6
7
8
CCD
A/D
Converter
IC703
LC99092-Z03
IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y03F
Digital PCB
2
3
4
5
6
7
8
Camera Unit
1
CCD
A/D
Converter