(without price) TV-1800B (NTSC) (KX-523) FEB < TUNING >

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1 < TUNING > (without price) TV-1800B (NTSC) (KX-523) FEB R

2 CONTENTS Page SPECIFICATIONS... 1 BLOCK DIAGRAM... 2 CIRCUIT OPERATIONS... 3 PRINTED CIRCUIT BOARDS... 4 PARTS LIST... 6 EXPLODED VIEW... 9 SCHEMATIC DIAGRAMS WAVEFORMS... 13

3 SPECIFICATIONS Item Specification 1. Power voltage DC 6.0 V 2. Power consumption Approx. 3.6 W 3. Current consumption Approx. 600 ma 4. Battery life (with alkaline batteries) Approx. 2.5 hours Batteries : 4 LR6 (D) size batteries 5. Power supply Car adaptor : CA-K65 AC adaptor : AD-K65 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 2.5 inches 8. No. of picture element 118,800 ( ) dots 9. Dimensions 135 mm (H) 91 mm (W) 38 mm (D) 10. Weight 240 g without batteries AC adaptor : AD-K 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

4 BLOCK DIAGRAM Antenna 1 TU200 2 Q200 Tuner IF Amp. 3 IC200 Video Sound Det. FM AFT Circuit AGC Circuit VR600 Volume 4 IC600 Speaker Audio Amp. 7 IC500 Tuning Voltage Generator 5 Chroma Circuit IC300 Common Driver LCD 6 IC700 Osc. Display A-D Converter Auto-Tuning Segment Driver Power Supply VCC2 (4.3 ± 0.02 V) VCC7 (41.6 ~ 51.6 V) VEE1 (-6.5 ~ -8.0 V) VR800 Brightness 8 Q800 ~ Q806, Q810, Q811 Display Voltage Generator 1 Color Tuner: TU200 TEPE5-02 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 M52045FP Generates the tricolor (red, green, and blue) from the video signal. 6 Osc./A-D Converter/Display / Auto-Tuning : IC700 MSM GSK-640E 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: IC800 BA10358F, Q800 ~ Q806 Q810 Q811 2SD1149-S, 2SD601A-R 3, 2SB709A-R Generates the display voltages V0 ~ V4 with VEE1 and VCC7 outputs from the power supply. 2

5 CIRCUIT OPERATIONS IC700 VSS2 TE2 TE4 TE6 TE1 TE3 TE5 M6 M5 M4 M3 M2 M1 AFT AD2 AD1 Test Mode AFT Key Switch KDB KCB AVB UHF B G R RLL VDD2 RHH A/D Test Circuit Channel bar Frequency Divider Sweep Tuning Tuning Voltage UP/DOWN Counter Pulse Width Modulation D/A Mute Synchronism Judgment MTB VLB TU M7 M8 Frequency Separator M9 M10 Mode Phase Comparator VDD1 C-S PD PSi VSS1 Display Data Output Vertical positioning Horizontal positioning Frequency Divider Oscillator OSC1 OSC2 D1 D2 D3 D4 D5 D6 CDB CFB CNB ECB SNB SCB STB HDB CK1 CK2 Signal Name Function Signal Name Function D1 ~ D6 Display data output terminal MTB Mute control terminal SNB Data latch signal TU Tuning control pulse output terminal CDB Scanning start signal VLB VHF High/Low channel select signal output terminal CFB Output voltage changeover signal UHF VHF/UHF select signal CNB Scanning signal shift lock signal AVB KCB Key input terminal KDB SCB Brightness modulation pulse control AFT AFT voltage input terminal STB Sampling start signal M1 ~ M10 Mode select signal input terminal ECB Signal input terminal controlling the TE1 ~ TE6 Test terminal segment drive terminal to "H" during no display CK1, CK2 Clock pulse output terminal R, G, B Original color OSC1 Oscillator frequency control terminal RLL "L" level voltage input terminal of OSC2 video signal PD Clock pulse adjustment terminal RHH "H" level voltage input terminal of video signal C-S Synchronizing pulse input terminal PS1 Mode control signal HDB Horizontal synchronizing signal input VSS1 Power supply voltage input terminal terminal VDD1 VDD voltage input terminal 3

6 4 TU200 T100 C100 FU100 C309 JK100 D180 CN701 H300 R313 R342 C305 C306 R734 D705 R733 C760 R705 R738 C756 R719 C761 L705 C750 C755 R703 C741 R704 R726 R727 R725 R700 D703 R808 C700 C808 C806 D803 C810 C845 R825 R824 C831 C832 VR800 VR600 L202 R247 R133 R314 C112 C115 L101 C113 T201 T200 C110 L102 C105 SW100 CN700 C606 F201 F202 C210 C208 C205 C207 R222 C600 JK600 C603 F200 C236 R207 C202 JK200 R210 R209 C233 C751 F203 C836 T950 C951 C950 R950 L950 C927 C925 PRINTED CIRCUIT BOARDS TOP VIEWS Linear Back Light

7 5 R246 C261 D500 C263 C262 C264 R230 C257 R241 R550 R541 R223 R236 R224 C259 R212 C245 C246 R215 C243 R202 L200 R204 C237 Q200 R205 R203 R201 C234 R502 R501 R500 CP204 R101 D100 Q100 Q101 R102 R103 C550 C545 R545 R111 R115 C140 C145 R117 Q111 D150 R311 L700 C776 R730 R810 R809 Q802 R819 R833 Q806 Q805 D805 R827 R830 Q804 C830 R229 R641 R610 R611 C642 R615 R645 R208 C240 C135 C265 C235 HP200 C249 R606 R607 IC800 IC600 IC200 IC700 R312 CP700 VR700 CP703 IC300 VR100 IC500 CP240 CP245 C630 Q811 Q810 R822 R821 C840 R820 R834 R835 R836 R740 C185 R330 R331 C350 C351 R325 C346 R322 C345 R343 R307 VR301 C347 R305 R306 C291 C290 CP221 C742 C740 D700 Q803 Q801 Q800 R816 R815 R817 C835 C765 VR200 D155 D152 R310 C340 R326 R335 R336 Q300 C335 C301 VR300 + SW700 SW701 FU901 FU900 BOTTOM VIEWS Linear Back Light

8 LINEAR PCB PARTS LIST Item Code No. Parts Name Specification Applicable Q R Diodes D Chip diode MA152WK-(TX) Common 1 C D Chip diode MA152WK-(TX) Common 1 C D Chip diode MA152WK-(TX) Common 1 C D Chip diode MA153A-(TX) Common 1 C D Chip diode SC016-2-TE12RA Common 1 C D Chip zener diode MA3330-M(TX) Common 1 C D Chip diode MA157A-(TX) Common 1 C D Chip diode MA157A-(TX) Common 1 C D Variable diode MA329-(TX) Common 1 C D Chip diode MA157A-(TX) Common 1 C D Chip diode MA152WA-(TX) Common 1 C Fuse FU Fuse ATSCR0.80A Common 1 B ICs IC Linear IC M51348FP-T1 Common 1 C IC Linear IC M52042FP-T1 Common 1 C IC Linear IC MSC1169MS-KR1-620 Common 1 C IC Linear IC NJM2070M-T1 Common 1 C IC LSI MSM GSK-640E Common 1 C IC OP AMP BA10358F-T1 Common 1 C Jacks JK Jack HEC Common 1 C JK Jack HSJ Common 1 C JK Jack HSJ Common 1 C Transistors Q Chip transistor 2SB709A-R(TX) Common 1 B Q Chip transistor 2SD601A-R(TX) Common 1 B Q Chip transistor 2SD1119-R(TX) Common 1 B Q Chip transistor 2SC4238-(TX) Common 1 C Q Chip transistor 2SB709A-R(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Q Chip transistor 2SB709A-R(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Q Chip transistor 2SD1149-S(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Q Chip transistor 2SB709A-R(TX) Common 1 C Q Chip transistor 2SD601A-R(TX) Common 1 C Switch SW Slide switch ESD-11V231 Common 1 C Converter SW DC-DC converter LC12U-31 Common 1 B Tuner TU Tuner TEPU5-02 Common 1 C Variable resistors VR Volume RK09H11T-10KB Common 1 C VR Volume RK09H11T-100KB Common 1 C Notes: Q Quantity used per unit R Rank 6

9 BL PCB Item Code No. Parts Name Specification Applicable Q R Lamp LA Fluorescent lamp 8.76AD1P2-CA11 Common 1 A Fuses FU Temperature fuse EYP-1BF102L Common 1 C FU Temperature fuse EYP-1BF102L Common 1 C Transistors Q Chip transistor 2SD965-R Common 1 B Q Chip transistor 2SD965-R Common 1 B Switches SW Switch SKHHAL Common 1 C SW Switch SKHHAL Common 1 C Transformer T Inverter trans NT-04 Common 1 B Notes: Q Quantity used per unit R Rank 7

10 COMPONENT Item Code No. Parts Name Specification Applicable Q R Display plate BXM-K523 K Common 1 C Adhesive tape A-K52 K451-5 Common 2 X Adhesive tape B-K502 K410903A-2 Common 2 X Switch knob A-K526 K Common 1 X Upper case BXM-K523 K110681A-7 For U.S.A., Canada 1 X Upper case BIM-K523 K110681A-11 Others 1 X Speaker 28-8F-03 Common 1 C Tuning button A-K526 K Common 1 X Ribbon K526 K Common 1 X Battery spring C-K526 K311313A-1 Common 2 X Battery spring D-K526 K311314A-1 Common 1 X Side case A-K526 K For U.S.A., Canada 1 X Side case A-K523 K Others 1 X BL ass'y K211111B*1 Common 1 B Fluorescent lamp 8.76AD1P2-CA11 Common 1 A Temperature fuse EYP-1BF102L Common 2 C Flat cable A-K541 K Common 1 C Battery spring A-K526 K Common 1 X Battery spring B-K526 K Common 1 X Linear PCB ass'y K340720*1 Common 1 B Rod antenna VR60114FA Common 1 C Lower case BAA-K526 K For U.S.A., Canada 1 X Lower case BXM-K523 K Others 1 X Battery cover A-K526 K For U.S.A., Canada 1 X Battery cover A-K523 K Others 1 X Stand A-K331 K For U.S.A., Canada 1 C Stand A-K503 K Others 1 C Rating plate BXM-K523 K Common 1 X Display unit K340722*1 Common 1 C Screw PS3 1.7X3.5 Bk Common 2 C Screw BT3 1.7X4 Ni Common 7 C Screw BT3 1.7X8 Bk Common 5 C Screw A-K334 K410096A-1 Common 1 C Notes: Q Quantity used per unit R Rank 8

11 EXPLODED VIEW

12 LINEAR SCHEMATIC DIAGRAMS External Antenna Jack Antenna 2 3 Earphone Jack Speaker 1 Audio Amplifier Circuit 13 Tuner IF pad IF detection Circuit Batteries DC in Power Switch To Back Light Display Voltage Generator Circuit 11 Tuning Voltage Generator Circuit To LCD Power Supply Circuit Chroma Circuit Display ler Circuit 11

13 BACK LIGHT 12

14 WAVEFORMS 3.2 V 600 mv 112 mv 63.5 µs 63.5 µs 63.5 µs 1 Q200 Collector 2 IC200 Pin 19 3 IC200 Pin 18 4 IC300 Pin 23 5 IC300 Pins 10, 11, 12 6 IC300 Pin 5 10 V 0.9 V 2.0 V 3.0 V 0.8 V 0.24 µs 63.5 µs 63.5 µs 7 IC300 Pin 4 0 Q111 Base 63.5 µs 63.5 µs 5.6 µs 600 mv 4.0 V 5.6 µs 8 IC300 Pin ns A IC700 Pin V 3.2 V 600 mv 9 Q111 Collector 360 ns B IC700 Pin V C Q806 Base 130 µs 63.5 µs D IC700 Pin 12 13

15 MA A , Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone:

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