![Samsung DVD-V5450 Скачать руководство пользователя страница 164](http://html.mh-extra.com/html/samsung/dvd-v5450/dvd-v5450_service-manual_343836164.webp)
Circuit Operating Descriptions
13-13
Samsung Electronics
(20) Trouble Detection
The trouble detection circuits are provided to protect the from damage (Fig. 13-15). The reel lock sensor detects
incorrect rotation of supply and take up reel. The reel lock sensor consists of the disk and photo sensor installed at
the bottom of the reel disk. the disk has 6 or 8 shielder parts and the photo sensor consists of the LED and photo
transistor assembly. When the light is shielded by the the shielder or enters the photo transistor, the output is
obtained from the photo sensor. IC601 measures the period of the pulse. When it is 4 seconds or more during
record/play, the VCR enters the reel emergency mode.
The VCR maintains the unload-power-on state in the reel emergency.
Fig. 13-15 Reel and Cylinder Lock T.END/S.END Sensor
66
98
99
R679
R678
R691
R682
(21) Cylinder Lock Sensor
Cylinder lock sensor detects abnormal rotation of the cylinder motor. Cylinder FG pulse is supplied to pin97 of
IC601. MICOM measures the period of the pulse in the play/record, search and trick play models. When H’d
S/W frequency is less than 10Hz for 5 seconds, the VCR enters the stop mode.
(22) Tape End Detection
When supply end sensor detects the transparent section at the end of tape, the VCR enters auto rewind mode,
except during timer recording and OTR mode. The cassstte LED emits light through the transparent section of
tape to the photo transistors, which are installed at both ends of the cassette. When take up end sensor detects
the start section of the tape during reverse search and rewind, the VCR automatically goes to stop mode.
Содержание DVD-V5450
Страница 23: ...Reference Information 14 12 Samsung Electronics Fig 14 14 Mecha Timing Chart Kaiser II ...
Страница 37: ...Reference Information 14 26 Samsung Electronics MEMO ...
Страница 49: ...Product Specification 2 12 Samsung Electronics MEMO ...
Страница 109: ...Operating Instructions 12 60 Samsung Electronics MEMO ...
Страница 158: ...Circuit Operating Descriptions 13 7 Samsung Electronics Fig 13 12 Block Diagram CASSET SWITCH START SEN ...
Страница 192: ...Circuit Operating Descriptions 13 41 Samsung Electronics 3 Block Diagram Fig 13 38 LA70100M Block Diagram ...
Страница 237: ...Troubleshooting 5 34 Samsung Electronics MEMO ...
Страница 247: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...
Страница 261: ...7 14 Samsung Electronics Electrical Parts List This Document can not be used without Samsung s authorization MEMO ...
Страница 263: ...Block Diagram 8 2 MEMO Samsung Electronics ...
Страница 264: ...10 1 10 PCB Diagrams 10 1 VCR Main PCB 10 2 DVD Main PCB 10 3 Front PCB 10 2 10 4 10 6 Samsung Electronics ...
Страница 265: ...PCB Diagrams 10 2 Samsung Electronics 10 1 VCR Main PCB COMPONENT SIDE ...
Страница 266: ...PCB Diagrams 10 3 Samsung Electronics CONDUCTOR SIDE ...
Страница 267: ...PCB Diagrams 10 4 Samsung Electronics 10 2 DVD Main PCB COMPONENT SIDE ...
Страница 268: ...PCB Diagrams 10 5 Samsung Electronics CONDUCTOR SIDE ...
Страница 270: ...9 1 9 Wiring Diagram Samsung Electronics ...
Страница 271: ...Wiring Diagram 9 2 MEMO Samsung Electronics ...
Страница 273: ...Schematic Diagrams 11 2 This Document can not be used without Samsung s authorization Samsung Electronics 11 1 S M P S ...
Страница 276: ...Schematic Diagrams 11 5 This Document can not be used without Samsung s authorization Samsung Electronics 11 4 Logic ...
Страница 277: ...Schematic Diagrams 11 6 This Document can not be used without Samsung s authorization Samsung Electronics 11 5 A V ...
Страница 278: ...Schematic Diagrams 11 7 This Document can not be used without Samsung s authorization Samsung Electronics 11 6 Hi Fi ...
Страница 279: ...Schematic Diagrams 11 8 This Document can not be used without Samsung s authorization Samsung Electronics 11 7 A2 NICAM ...
Страница 282: ...Schematic Diagrams 11 11 This Document can not be used without Samsung s authorization Samsung Electronics 11 10 TM ...
Страница 283: ...Schematic Diagrams 11 12 This Document can not be used without Samsung s authorization Samsung Electronics 11 11 I O ...