Casio JY-10B Service manual
JY-10B (NTSC)
(KX-513)
SEPT. 1997
(without price)
UHF
VHF
13
30 40 50 62 CH
1
POWER
ANT
TUNING
CH2 3 4681012
EXT
EAR
DC IN 6V
VHF UHF
R
CONTENTS
Page
SPECIFICATIONS.....................................................................................1
BLOCK DIAGRAM.................................................................................... 2
PRINTED CIRCUIT BOARDS................................................................... 3
PARTS LIST.............................................................................................. 5
EXPLODED VIEW..................................................................................... 9
SCHEMATIC DIAGRAMS.......................................................................10
WAVEFORMS .........................................................................................12
SPECIFICATIONS
Item Specification
1. Power voltage DC 6.0 V
2. Power consumption Approx. 3.5 W
3. Current consumption Approx. 580 mA
4. Battery life (with alkaline batteries) Approx. 4 hours
Batteries : 4 × LR6 (D) size batteries
5. Power supply Car adaptor : CA-K65
AC adaptor : AD-K64
Earphone jack : 3.5 ø mini
6. Connection terminals External power jack : 6.0 V DC IN
External antenna jack : 3.5 ø mini
7. Screen size 2.3 inches
8. No. of picture element 39,600 (360 × 110) dots
9. Dimensions 84 mm (H) × 138 mm (W) × 51 mm (D)
10. Weight 230 g without batteries
AC adaptor : AD-K64
11. Options Car adaptor : CA-K65
Antenna matching device : AS-35S
Color System TV System Channel
NTSC M / M US VHF: 2 ~ 13 ch UHF: 14 ~ 69 ch
— 1 —
Antenna
BLOCK DIAGRAM
Power
Supply
1 TU200 2 Q200
IF Amp.Tuner
7
IC500
Tuning
Voltage
Generator
VCC2 (3.95 ± 0.02 V)
VCC7 (34.2 ~ 41.8 V)
VEE1 (– 6.03 ~ – 7.37 V)
VR800
Brightness
Control
3 IC200
Video
Sound Det.
FM
AFT Circuit
AGC Circuit
5
6
IC300
Chroma
Circuit
IC700
Osc.
Display
Control
A-D Converter
Auto-Tuning
Control
8 Q800 ~ Q803, Q805, Q806
Display
Voltage
Generator
VR600
Volume
Control
4 IC600 Speaker
Audio
Amp.
Common
Driver
LCD
Segment
Driver
1 — Color Tuner: TU200 TEPU5-02
Selects a desired radio wave and changes it to the video IF signal.
2 — Video IF Amp.: Q200 2SC4238
Amplifies the video IF signal output from the tuner TU by 10 times (20 dB).
3 — Video Det./Sound Det./FM Det./AFT/AGC: IC200 M51348FP
Eliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal.
Also, the sound signal is picked up from the sound IF signal by FM detection.
4 — Audio Amp.: IC600 NJM2070M
Sound amplification.
5 — Chroma Circuit: IC300 M52042FP
Generates the tricolor (red, green, and blue) from the video signal.
6 — Osc./A-D Converter/Display Control/ Auto-Tuning Control : IC700 MSM6625-02 GSK-640F
Converts the color signal into a digital signal.
Also, generates the clock pulse for the display and controls the display.
7 — Tuning Voltage Generator: IC500 MSC1169MS-K
Generates the tuning voltage with the tuning pulse (TU) output from 6.
8 — Display Voltage Generator: Q800 ~ Q803 Q805 Q806 2SD1149-S,
2SD601A-R×4, 2SB709A-R
Generates the display voltages V0 ~ V4 with VEE1 and VCC7 outputs from the power supply.
— 2 —
TOP VIEWS
Linear
C110
SW110
T100
R170
R121
R120
C137
Q101
VR100
R105
JK100
D180
JK600
HP210
JK200
C603
C112
C105
D110
CN710
L101
C100
C113
C115
HP110
L102
C202
Q805
C782
C770
C700
TU200
PRINTED CIRCUIT BOARDS
D805
C841
R745
L710
C808
R550
1
R500
C530
C550
D803
R501
R503
D500
CN700
R502
C545
R545
C800
C806
D707
R738
C535R704
CN720
VR700
R705
C750
C751
D703
C236
R700
R224
R201
R203
IC700
R205
C238
F200
VR200
HP100
1
C205
C740
C741
C742
L103
C208
C207
VR300
C345
R322
C346
R222
IC300
VR301
C305
R330C350
F210
R223
C259
R236
R251
1
C210
C309
C303
F220
H300
T200
T201
L202
F203
JK250
VR800
VR600
C606
Back Light
CN920
L950
Q950
C925
Q951
R950
Switch
SW100
C927
T900
— 3 —
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