Casio TV-5100D Service manual
(with price)
INDEX
POCKET TELEVISION
TV-5100D
SEPTEMBER 1994
Page
Specifications.............................................................................................1
Block Diagram ...........................................................................................2
Adjustment
Linear PCB..........................................................................................3
PCB ...........................................................................................................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
R
SPECIFICATIONS
Item Specification
1. Reception channels VHF : — UHF : 21 ~ 68 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
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
Car adaptor :CA-K65
RF connector :CF-13
Antenna matching device :AS-35S
14. Body color Black
— 1 —
Antenna
BLOCK DIAGRAM
Power
Supply
1 TU200 2 Q200
IF Amp.Tuner
7
IC270
Tuning
Voltage
Generator
VCC2 (4.5±0.02V)
VCC7 (26.5~31.3V)
VCC6 (10.8~12.5V)
VEE1 (–8.5~–7.5V)
VEE2 (–19.8~–17.2V)
3 IC200
Video
Sound Det.
FM
AFT Circuit
AGC Circuit
5
6
Det
IC300
Chroma
Circuit
IC700
Display
Control
Auto-Tuning
Control
4 IC600 Speaker
VR600
Audio
Amp.
Volume
Control
LCD
1 — Color Tuner: TU200 TEPB5-02
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
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 IR3P96B
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.
— 2 —
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
Adjustment And Test Point Locations
T300
T201
T200
Top View
— 3 —
Pad IF
TP2
TP7
VR204
TP3
TP4
VR748
TP5
VR302
TP8
VR303
TP6
TP1
VR100
Bottom View
Equipment Connection / Adjustment Procedure
VCC2-1 Voltage Setting
TV-5100
Set
VR301
VR300
Voltmeter
Output
TP1
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR100
Voltmeter
— 4 —
TP1
Adjust for 4.50 ± 0.02 V
reading on voltmeter.
* Open soldering pad IF.
Pattern
generator
Signal
generator
Video Detection Coil Adjustment
TV-5100
Set
Input Output
TP2
TP3
Oscilloscope
Low-pass
filter
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
Pattern
generator
Signal
generator
TP2 T200 TP3
Color bar
39.5 MHz
48 ± 3 dBµ
Low-pass filter
Oscilloscope
AFT Coil Adjustment
* Open soldering pad IF.
Sweep
generator
Input
TP2
TV-5100
Set
Oscilloscope Voltmeter
Output
TP4
39.5±5 MHz
Sweep
generator
(Sweep) Marker:
TP2 T201 TP4
39.5 MHz
Voltmeter
Oscilloscope
70 dBµ
Adjust for DC level at mini-
Adjust for 1.4 ± 0.2 V reading
on voltmeter.
Confirm that the marker is at
the middle of S-curve on oscilloscope.
* Open soldering pad IF.
Pattern
generator
Pattern
generator
Signal
TP2 VR300 TP5
Color bar
39.5 MHz
70 dBµ
generator
Contrast Adjustment
Signal
generator
Input
TP2
Oscilloscope
— 5 —
TV-5100
Set
VCC2-3(5V)
10 kohm
Oscilloscope
CP327
Output
TP5
Adjust step form wave to read
2.6 ± 0.1 Vp-p.
* Open soldering pad IF.
Pattern
generator
Signal
generator
Color, BCC Adjustment
TV-5100
Set
Oscilloscope
Input
TP2
Input Input Input Output Output
Connection Point Signal Connection Point
Pattern
generator
Signal
TP2 Oscilloscope TP5
Color bar
39.5 MHz
70 dBµ
Adjust Result
VR301
T300
generator
AGC Adjustment
Pattern
generator
Signal
generator
TV-5100
Set
Output
TP5
Adjust VR301 so that the
difference
Pulse A
between pulse
A and B is less
than 0.5 ± 0.1V.
Adjust T300 so
that the difference between
pulse C and D is less than
0.1V.
IF levelmeter
Pulse C
Pulse D
Pulse B
Pattern
generator
TV Signal
generator
Input
TP7
Color bar
TP7 VR204 IF levelmeter TP2
65 ± 5 dBµ
Output
TP2
Adjust for 84 ±1 dBµ
reading on the IF levelmeter
— 6 —
Vcom Adjustment
TV-5100
Set
Oscilloscope
Output
TP8
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR302
Oscilloscope TP8
VR303
* Place a photo diode on the middle of the display plate.
Photo senser amp.
TV-5100
Set
Photo
diode
ON
OFF
Band-pass
H
M
L
filter
Adjust VR302 so that squarewave to read 5.0 ±0.1V.
Adjust VR303 so that high level
of the square-wave is at
0.5±0.1V.
Oscilloscope
AV-C1
Photo sensor
amp.
VR303
Band pass filter
Oscilloscope
Free-running Frequency Adjustment
TV-5100
Set
Frequency
Counter
Output
TP6
VR748 TP6
Frequency
Counter
Adjust for ripple at minimum.
Adjust for a reading of 15.625 ±
0.1 KHz.
— 7 —
PRINTED CIRCUIT BOARDS
TOP VIEWS
Linear
R290
SW100
C795
D180
ANT
JK200
C305
FU100
CN701
JK100
C100
C210
1
T
C202
T
TU200
F203
1
R706
R
701
R703
R324
R208
C242
GSRT
GRES
VGL
SRT
MCLK
CLR
R704
R702
JK250
C792
VSS2
VB
Vg
F200
L201
CN700
VR640
VR343
VCOM
VGH
GPCK
VSS1
VA
VC
VSL
VSH
VSS3
HCNT
1
T
T201
F203
T
C329
R781
C317 T300
C308
C160
C331
R780
C315
C306
R308
610D-L-B
C110
C162
AFT
R738
R739
C332 R747
C330
R339
L102L101
R727
R729
C771
R743
C717
T200
LLD
R728
IC700
R
R745 R744
C774
R353
Q300
C350
C156 C112
C116
C207
F202
F202
OM675
740
L760
C
772
1
R761
IC701
R748
H300
R350
C351
R351 R352
C603
C208
R222
F201
1
F201
R716
R715
1
L756
R323
R325
T100
C606
C130
C120
C114
C118
R600
JK600
BL
C925L950
C927
T950
— 8 —
Loading...