Casio TV-5100B Guida alla risoluzione dei problemi
R
(with price)
Page
Specifications.............................................................................................1
Block Diagram ...........................................................................................2
Adjustment
Linear PCB..........................................................................................3
Printed Circuit Boards................................................................................8
Wiring Diagram........................................................................................10
Electrical Parts List ..................................................................................11
Mechanical Parts List...............................................................................18
Exploded View / Disassembly..................................................................19
IC and Transistor Lead Identification and Internal Circuitry.....................20
Schematic Diagrams and Waveforms .....................................................23
POCKET TELEVISION
AUGUST 1994
TV-5100B
INDEX
SPECIFICATIONS
— 1 —
Item Specification
1. Reception channels VHF : 2 ~ 13 ch UHF : 14 ~ 69 ch
2. Power voltage DC 6.0 V
3. Power consumption Approx. 3.0 W
4. Current consumption Approx. 500 mA
5. Battery life (with alkaline batteries) Approx. 2.0 hours
Batteries : 4 AA size batteries
6. Power supply Car adaptor : CA-K65
AC adaptor : AD-K65, 64
Earphone jack : 3.5ø mini
7. Connection terminals External power jack : 6.0 V DC IN
External antenna jack : 3.5ø mini
Audio / Video jack : 3.5ø
8. Screen size 1.8 inches
9. No. of Picture element 61,380 (220 ×279) dots
10. Dimensions 92 mm (H) ×105 mm (W) ×80 mm (D)
3-11/16" (H) ×4-1/5" (W) ×3-1/5" (D)
11. Weight 290 g excepting batteries
10.2 oz excepting batteries
12. Standard accessories Test batteries (R6 x 4)
13. Options AC adaptor :AD-K65, 64
Car adaptor :CA-K65
RF connector :CF-13
Antenna matching device :AS-35S
14. Body color Black
— 2 —
Antenna
1 TU200 2 Q200 3 IC200
7
Tuning
Voltage
Generator
VR600
Volume
Control
4 IC600 Speaker
IC300
IC700
LCD
Chroma
Circuit
Display
Control
Auto-Tuning
Control
5
6
VCC2 (4.5±0.02V)
VCC7 (25.9~31.3V)
VCC6 (10.8~12.0V)
VEE1 (–8.5~–7.5V)
VEE2 (–19.8~–17.2V)
IC270
Power
Supply
Audio
Amp.
IF Amp.Tuner
Video
Sound Det.
FM
AFT Circuit
AGC Circuit
Det
1— Color Tuner: TU200 TEPU5-02
Selects a desired radio wave and changes it to the video IF signal.
2— Video IF Amp.: Q200 2SC4670
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
Eliminatesthe carrier wavein the video IF signal,and picks upthe video signal and thesound 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 IR3P90B
Generates the tricolor (red, green, and blue) from the video signal.
6— Display Control/ Auto-Tuning Control : IC700 MSM6770GS
Controls the display.
7— Tuning Voltage Generator: IC270 BA10358F
Generates the tuning voltage with the tuning pulse (TU) output from 6.
BLOCK DIAGRAM
— 3 —
Adjustment And Test Point Locations
Top View
T201
T200
ADJUSTMENT
LINEAR PCB
Items To Be Adjusted
Item Measuring Instrument
VCC2-1 voltage setting Voltmeter
Video detection coil adjustment TV signal generator, pattern generator, oscilloscope,
low-pass filter
AFT coil adjustment Sweep generator, oscilloscope, voltmeter
Contrast adjustment TV signal generator, pattern generator, oscilloscope
AGC adjustment TV signal generator, pattern generator, IF levelmeter
Clock adjustment Voltmeter
— 4 —
VR100
TP4
TP3
TP6
TP7
TP5
TP8
TP1
VR301
VR311
VR325
VR748
VR204
VR330
VR308
Pad IF TP2
VCC2-1 Voltage Setting
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
Adjust for 4.50 ±0.02 V
reading on voltmeter.
Voltmeter
VR100
Set
Output
Voltmeter
TP1
TP1
Equipment Connection / Adjustment Procedure
Bottom View
TV-5100
— 5 —
Video Detection Coil Adjustment
TP2 VR301 TP5
Pattern
generator
Signal
generator
Color bar
45.75 MHz
70 dBµOscilloscope Adjust step form wave to read
2.5 ±0.1 Vp-p.
* Open soldering pad IF.
Contrast Adjustment
TP2 T201 TP4
Adjust for 1.4 ±0.2 V reading
on voltmeter.
Confirm that the marker is at
the middle of S-curve on oscil-
loscope.
Sweep
generator Set Oscilloscope Voltmeter
Output
Input
* Open soldering pad IF.
TP2 TP4
AFT Coil Adjustment
Pattern
generator
Signal
generator
TP2 T200 TP3
Low-pass filter
Oscilloscope
Color bar
45.75 MHz
45 ±3 dBµAdjust for DC level at mini-
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
* Open soldering pad IF.Signal
generator
Pattern
generator Set Low-pass
filter
Oscilloscope
Input Output
TP3
TP2
Voltmeter
Oscilloscope
Sweep
generator
45.75±5 MHz
(Sweep) Marker:
45.75 MHz
70 dBµ
TV-5100
TV-5100
Set
Pattern
generator Signal
generator
Input
TP2 Output
TP5
Oscilloscope
VCC2-3(5V)
10 kohm
CP302
TV-5100
— 6 —
Pulse BPulse A
Color Adjustment
* Open soldering pad IF.
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
Pattern
generator
Signal
generator
Color bar
45.75 MHz
70 dBµ
TP2 VR311 Oscilloscope TP5
Signal
generator
Pattern
generator Oscilloscope
Input
TP2 Output
TP5
Adjust VR311 so that the
difference
between pulse
A and B is less
than 0.1V.
Pulse BPulse A
Tint Adjustment
* Open soldering pad IF.
AGC Adjustment
Pattern
generator
TV Signal
generator TP7 VR204 IF levelmeter TP2
Pattern
generator
Signal
generator
Color bar
45.75 MHz
70 dBµ
TP2 VR325 Oscilloscope TP5
Adjust VR325 so that the
difference
between pulse
A and B is less
than 0.1V.
Signal
generator
Pattern
generator IF levelmeter
Input
TP7 Output
TP2
Signal
generator
Pattern
generator Oscilloscope
Input
TP2 Output
TP5
Color bar
65 ±5 dBµAdjust for 84 ±1 dBµ
reading on the IF levelmeter
TV-5100
Set
TV-5100
Set
TV-5100
Set
— 7 —
Vcom Adjustment
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR330
Free-running Frequency Adjustment
Oscilloscope
Output
TP8
Adjust VR328 so that square-
wave to read 6.0 ±0.1V.
AdjustVR330so thathighlevel
of the square-wave is at 0.0
±0.25V.
Oscilloscope TP8
VR328
VR330
Photo sensor
amp.
Band pass filter
Oscilloscope
Frequency
Counter
VR748 TP6
Photo senser amp. Oscilloscope
AV-C1
ON
OFF
H
M
L
Band-pass
filter
Photo
diode
* Place a photo diode on the middle of the display plate.
Output
TP6
Frequency
Counter
Adjust for a reading of 15.73 ±
0.01 KHz.
Adjust for ripple at minimum.
TV-5100
Set
TV-5100
Set
TV-5100
Set
— 8 —
C202
T201 T200
F203
TU200
T
T
F200
R222
C246
F202 F201
C319C304
C300
C118
C110
C100 C120
T100
JK100
L102
L101
C114
C116
C112
C606
C603 C215
C600
C302
VR343
SW
100
FU
100
IC700
+
OM-675
H300
JK250
JK600
R727
R728
R737
R714
C772
IC701
R342
R600
R601
C156
D180
R736 R734 C373
C150
C160
C162
C130
C774
C771
R741
R739 R740
R729
C210
C207 C208
R208 C242
L201
R717 R718
R704
C336
VR640
C788
C786
R756
R760
R761
C781
L756
C787 R757
JK200
CN700
C927
T950
C925L950
PRINTED CIRCUIT BOARDS
TOP VIEWS
Linear
BL
— 9 —
R105
TM100
VR100
R606
R280
R100
R160
C158
Q101
D150
D160
C137
DB+
R117
Q111
C140 R113
C180
Q204 R282
C285
IC600
R620
C335
C334
R346 C375
R231
C333 R301 VR301
VR748
R312
VR330
C317 R330
R329
R334
R328
R327
C315
C642
R642
C641
IC300
C299
R275
R276
Q270
IC270
R270
C270
R271
R201
R203
R205
R206
C236
C240
R204 C239 IC200
C243
C248
C249
L200
R200
C237
R202
Q200
R207
C245+C205
R210 C230
+C201
+C200
R241 C217
R272
R286
R285
C261
R250
Q751
R246 R738
R731
L307
L333L340
L740
R732
+C308
C770 R346
R749
C792
R211 C287 C271
C264
C263 C262
R214
R212
VR204 R223
R236C259
R227
L202 R247
R225 R230
C257
R229
R759
Q750C791
C794 R758
C790
C793
R770 C751
R777 C746
R723
R720 R722
D715
L753
C773
R733
C310
L300C345
R316
R750
R751
+C725
L780
C359 R331
C354
R326
C355 VR311
C341C339
C337
R314R313
R302
C332
VR328
R333
R343 C252
C365
C368 R347
R344
C376
R349
R348
C374 R345
R281 C152D152 R115 C145
R110
Q110
R108
D158
D154
C154 R107
C630
D110
C105
D100
R640
R643
R240
R209
R332
C347
R324
R318
C352
C363
R323
C358
C356
C353
R322
C357
VR325
R325
BOTTOM VIEWS
Linear
C796 SW700
SW701
R795 R796
FU901
FU900
R953
Q951
R950
Q950
BL
Indice
Altri manuali Casio TV
