Casio EV-510C Troubleshooting guide

R
EV-510C(PAL B / G,H)
EV-510D(PAL I)
EV-510I (PAL B / G)
EV-510N(PAL B / G,H)
(without price)
FEB. 1997
EV-510
UHF
VHF 13 30 40 50 62 CH
1234681012 CH
< TUNNING >
INDEX

CONTENTS
SPECIFICATIONS ......................................................................................... 1
BLOCK DIAGRAM ........................................................................................ 2
PRINTED CIRCUIT BOARDS ....................................................................... 3
EXPLODED VIEW ......................................................................................... 5
PARTS LIST .................................................................................................. 6
SCHEMATIC DIAGRAMS ............................................................................. 9
WAVEFORMS.............................................................................................. 12

— 1 —
Item Specification
1. Power voltage DC 6.0 V
2. Power consumption Approx. 2.3 W
3. Current consumption Approx. 383 mA
Batteries : 3 AA size batteries
4. Power supply Car adaptor : CA-K65
AC adaptor : AD-K65
Earphone jack : 3.5ø mini
5. Connection terminals External power jack : 6.0 V DC IN
External antenna jack : 3.5ø mini
Audio / Video jack : 3.5ø
6. Screen size 2.5 inches
7. No. of Picture element 61,380 (220 ×279) dots
8. Dimensions 75 (W) ×26.7 (D) ×120.8 (H) mm
9. Weight 195 g excepting batteries
AC adaptor : AD-K65, 64
10. Options Car adaptor : CA-K65
RF connector : CF-13
Antenna matching device : AS-35S
SPECIFICATIONS
Model Color System TV System Channel
EV-510C/N PAL B/G, H CCIR VHF: 2 ~ 12 ch UHF: 21 ~ 69 ch
EV-510D PAL –/I UK — UHF: 21 ~ 68 ch
EV-510I PAL B/G ITALY VHF: A ~ H2 ch UHF: 21 ~ 69 ch

— 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 ± 0.02 V)
VCC7 (25.9 ~ 31.3 V)
VCC6 (10.8 ~ 12.0 V)
VEE1 (–8.5 ~ –7.5 V)
VEE2 (–19.8 ~ –17.2 V)
IC270
Power
Supply
Audio
Amp.
IF Amp.Tuner
Video
Sound Det.
FM
AFT Circuit
AGC Circuit
Det
1— Color tuner: TU200 TEPE5-01 (EV-510C/I/N) TEPB5-05 (EV-510D)
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 tuner TU200 by 10 times (20 dB).
3— Video det./Sound det./FM det./AFT/AGC: IC200 M51348FP
EliminatesthecarrierwaveinthevideoIFsignal,andpicksupthevideosignalandthesoundIFsignal.
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 IR3P96-1
Generates the tricolor (red, green, and blue) from the video signal.
6— Display control/Auto-tuning control: IC700 MSM6770CGS
Controls the display.
7— Tuning voltage generator: IC270 BA10358F
Generates the tuning voltage with the tuning pulse output from 6.
BLOCK DIAGRAM

— 3 —
615BL
CN702
L950
R720
Q950
R950
Q951
C925
T950
CN950
C927
,,,
,
,
,
,
,
,
,,,
+
+
+
++
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
JK200
C225 C202
GND GND
GND
C145
VR100
R105
TM100
SW100
C100C114 L101
C118
T100
C120
C110
C112
C220
C116 L102
C746R780 R715
Q760
IC700
C710
R716
R710 R711
Q710
R706
R703
R707
R705
R701
HP900
C600
C603C311
R750
1
R751 R761
C781 C752
C725
L301 L310
C374
C375
C312
R312
H300
C306
C353
C352 R736
R737
FU100
D180
C376C381
C380
C355 R302
C215
JK250
JK600
C301
C315
C300
C334 C333
C305
JK100
VR304
VR600
CN700
T201 T200
R758
Q750
R759
C210
F203 F202 F201
R212R209R222
C245
C259 C236R223
R227
R224
R230
C257
R229
C205 C207
C208
F200
TU200
615C-L
C606
PRINTED CIRCUIT BOARDS
TOP VIEWS
Linear
BL

— 4 —
CP990
CP900
SW701
CP903
CP902
SW700

— 5 —
2
4
3
6
5
23
24
8
7
10
11
24
21
22
24
12
13
15
16
23
25
17
18
23
14
9
1
13-1
19
20
26
EXPLODED VIEW

PARTS LIST
LINEAR PCB
Item Code No. Parts Name Specification Applicable Q R
Diodes
D100 2390 1183 Chip diode MA142WK-(TX) Common 1C
D110 2315 0158 Chip zener diode MA3051-L(TX) Common 1C
D150 2390 1183 Chip diode MA142WK-(TX) Common 1C
D152 2390 1183 Chip diode MA142WK-(TX) Common 1C
D154 2390 1183 Chip diode MA142WK-(TX) Common 1C
D156 2390 1183 Chip diode MA142WK-(TX) Common 1C
D158 2390 1470 Chip diode MA143A-(TX) Common 1C
D180 2390 1190 Chip diode ERA15-01Y Common 1C
Fuse
FU100 3632 0469 Fuse PI-251001(F10) Common 1B
ICs
IC200 2114 1827 Linear IC M51348FP-T1 Common 1C
IC270 2116 0119 OP AMP BA10358F-T1 Common 1C
IC300 2114 3479 Linear IC IR3P96-1 Common 1C
IC600 2114 2464 Linear IC NJM2070M-T1 Common 1C
IC700 2015 0147 LSI MSM6770CGS-2K-6004 Common 1C
IC701 2114 3458 IC S-81230SG-QB-T1 Common 1C
Jacks
JK100 3501 8281 Jack HEC0811-010010 Common 1C
JK200 3501 5439 Jack HSJ1456-01-210 Common 1C
JK250 3501 3773 Jack HSJ6063-01-410 Common 1C
JK600 3501 5439 Jack HSJ1456-01-210 Common 1C
Transistors
Q101 2253 0133 Chip transistor 2SD1819A-R(TX) Common 1B
Q110 2253 0133 Chip transistor 2SD1819A-R(TX) Common 1B
Q111 2253 0308 Chip transistor 2SD1119-R(TX) Common 1B
Q200 2252 0707 Chip transistor 2SC4238-(TX) Common 1C
Q204 2210 8026 Chip transistor 2SB709A-R(TX) Common 1C
Q270 2259 1435 Digital transistor DTC144EUWT106 Common 1C
Q600 2259 1645 Digital transistor DTA144EUWT106 Common 1C
Q750 2251 0189 Chip transistor 2SB1218A-R(TX) Common 1C
Q760 2251 0189 Chip transistor 2SB1218A-R(TX) Common 1C
Switches
SW100 3412 0938 Slide switch ESD-11V231 EV-510C/I/N 1C
SW100 3412 1134 Slide switch ESD-11V221 EV-510D 1C
Converter
T100 3065 0518 DC-DC converter LC12U-35 Common 1B
Tuners
TU200 1013 5315 Tuner TEPE5-01 EV-510C/I/N 1C
TU200 1014 8570 Tuner TEPB5-05 EV-510D 1C
Variable resistors
VR304 2765 1708 Volume XV081PV1NB10K3017 Common 1C
VR600 2765 1708 Volume XV081PV1NB10K3017 Common 1C
Notes: Q – Quantity used per unit
R – Rank — 6 —

BL PCB
Item Code No. Parts Name Specification Applicable Q R
Transistors
Q950 2253 0287 Chip transistor 2SD965-R Common 2B
Q951 2253 0287 Chip transistor 2SD965-R Common 2B
Switches
SW700 3412 1029 Switch SKHHAL Common 2C
SW701 3412 1029 Switch SKHHAL Common 2C
Transformer
T950 3012 1239 Inverter trans NT-06 Common 1B
Notes: Q – Quantity used per unit
R – Rank — 7 —

COMPONENT
Item Code No. Parts Name Specification Applicable Q R
1 6611 8750 Display plate CIM-K619 K440980-2 EV-510C 1C
1 6611 8790 Display plate DDM-K619 K440980-3 EV-510D 1C
1 6611 8820 Display plate NBM-K619 K440980-6 EV-510I/N 1C
2 6609 9080 Adhesive tape A-K615 K440178-1 Common 1X
3 6611 5090 Upper cover AAM-K617 K240130-3 EV-510C/D/N 1X
3 6611 9020 Upper cover I-K619 K240130-5 EV-510I 1X
4 6609 9031 Upper case B-K615 K140049A-1 EV-510C/I/N 1X
4 6610 2661 Upper case D-K615 K140049A-3 EV-510D 1X
5 6020 7658 Battery spring B1 G513 P408A-1 Common 1X
6 6020 7666 Battery spring B2 G513 P409A-1 Common 1X
7 6609 9070 Battery spring A-K615 K440159-1 Common 1X
8 6609 9060 Battery spring B-K615 K440243-1 Common 1X
9 6611 8840 Battery cover AAM-K617 K240129-4 EV-510C/D/I/N 1X
10 6609 9050 Battery blind plate A-K615 K440179-1 Common 1X
11 6611 4975 BL PCB unit K440948*1 Common 1C
12 6609 9220 Switch knob A-K615 K340117-1 Common 1X
13 6611 8717 Linear PCB ass'y K340740*2 EV-510C/I/N 1B
13 6611 8718 Linear PCB ass'y K340740*3 EV-510D 1B
13-1 6609 9090 Flat cable A-K615 K340176-1 Common 1C
14 3851 1470 Rod antenna VR70100GA Common 1B
15 3831 0987 Speaker 2083G Common 1C
16 6609 8970 Lower case B-K615 K140050-1 EV-510C/D/N 1X
16 6610 2130 Lower case I-K615 K140050-3 EV-510I 1X
17 6611 8770 Rating plate DDM-K619 K440981-3 EV-510D 1X
18 6608 8420 Stand A-K331 K310518-1 Common 1C
19 6611 5150 Cushion A-K615 K440931-1 Common 2X
20 6611 5160 Cushion B-K615 K440931-2 Common 2X
21 2725 1326 Display unit COD25T2015PB Common 1B
22 6611 4978 BL unit K340703*1 Common 1A
23 5112 0868 Screw BT3 1.7X5 Bk Common 4C
24 5860 0420 Screw BT3 1.7X4 Ni Common 6C
25 6609 1290 Screw A-K610 K412031-1 Common 1C
26 6609 9680 Jack cover A-K611 K340237-1 EV-510D/I/N 1X
Notes: Q – Quantity used per unit
R – Rank — 8 —