R
(with price)
Page
Specifications............................................................................................. 1
Block Diagram ........................................................................................... 2
Power Supply............................................................................................. 3
Adjustment
Linear PCB .......................................................................................... 4
A/D PCB .............................................................................................. 6
Printed Circuit Boards ................................................................................ 7
Wiring Diagram ........................................................................................ 10
Electrical Parts List .................................................................................. 11
Mechanical Parts List............................................................................... 16
Exploded View / Disassembly .................................................................. 17
Waveforms ............................................................................................... 18
Schematic Diagrams ................................................................................ 19
LCD VIDEO MONITOR
VM-570B
JUNE 1994
INDEX
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SPECIFICATIONS
Item
Specification
1.
Power voltage
DC 6.0 V
2.
Power consumption
Approx. 2.7 W
3.
Current consumption
Approx. 450 mA
4.
Battery life (with alkaline batteries)
Approx. 4.0 hours
Batteries
: 4 AA size batteries
5.
Power supply
Car adaptor : CA-K65
AC adaptor : AD-K64
Earphone jack
: 3.5ø mini
6.
Connection terminals
External power jack
: 6.0 V DC IN
Audio / Video jack
: 3.5ø
7.
Screen size
2.2 inches
8.
No. of Picture element
39,600 (110
× 360) dots
9.
Dimensions
92 mm (H)
× 105 mm (W) × 80 mm (D)
3-11/16" (H)
× 4-1/5" (W) × 3-1/5" (D)
10.
Weight
250 g excepting batteries
8.8 oz excepting batteries
11.
Standard accessories
Stand
:
OS-55W(D)
AV cord
:
TSX1213-1
12.
Options
AC adaptor :
AD-K64
Car adaptor :
CA-K65
13.
Body color
Black
-- 1 --
1
-- Chroma Circuit IC300 M51286FP
Generates the tricolor of red, green and blue from the video signal.
2
-- Audio Amp. IC600 TA7368F
Sound amplification
3
-- OSC, A/D Converter, Display / Auto-tuning Control : IC700 MSM6525B02 GSK-64D
Converts the color signal into digital signal.
Also generates the clock pulse for the display, and controls the display.
4
-- Tuning Voltage Generator IC400 MSC1169MS-K
Generates the tuning voltage from the tuning pulse (TU) output of 6.
5
-- Display Voltage Generator Q800 ~ 801 2SD1149, 2SD601A-Rxz
Generates the display voltages V0 ~ V4 from VEE1 and VCC7 outputs of the power supply.
BLOCK DIAGRAM
-- 2 --
A/V Jack
1
IC300
Tuning
Voltage
Generator
VR600
Volume
Control
2
IC600
Speaker
IC700
Common
Driver
LCD
Segment
Driver
OSC
Display
Control
A/D Converter
Auto-tuning
Control
3
5
Q800~Q801
VR800
Display
Voltage
Generator
Brightness
Control
VCC2 (4.0V)
VCC6 (28 ~ 40V)
VCC7 (48 ~ 72V)
VEE1 (-8.4 ~ -5.6V)
Power
Supply
Audio
Amp.
Chroma
Circuit
4
IC400
POWER SUPPLY
-- 3 --
Fig. 3
The power supply consists of DC-DC converter, and causes the voltages to be output as shown in Table - 2.
Table - 2
Name
Voltage
Function
VCC2
4.0
± 0.02V
Main voltage
VCC6
48.0 ~ 72.0V
Tuning voltage
VCC7
28.0 ~ 40.0V
Display voltage
VEE1
-8.4 ~ -5.6V
Display voltage
DC 6V
GND
from IC400
Vref
GND
VCC2
VEE1
VCC7
VCC6
D115
D116
D117
D118
Q102
C152
Q101
R104
T100
LC12U-21
L101
C151
Q100
R103
R101
C153
C115
C116
C117
C118
2
1
9
8
3
4
5
6
7