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8 Troubleshooting
SAM4S NR-500 SERIES
8-5
End
Key Board Problem
Key Input
Failure ?
Y
N
1. Check & Change Key Board Assy
2. Check the KBD Connector on PBA
3. Check the Key Scan Part 74LVC138(U26,U27)
4. Check the Key Return part 74LVC541(U28)
5. Check the related Circuit and Pattern
Specific Key
Failure?
1. Check the affected Key
2. Check the Matrix Bus & Data Bus
3. Check the Diodes(BAT43WS)
4. Check the Key Board Assy
N
Y
8-5 Key Board Problem
All manuals and user guides at all-guides.com
all-guides.com
Содержание NR-500 Series
Страница 18: ...2 Product Specifications 2 12 SAM4S NR 500 SERIES MEMO All manuals and user guides at all guides com...
Страница 23: ...3 Installation and Operation SAM4S NR 500 SERIES 3 5 All manuals and user guides at all guides com...
Страница 57: ...6 Exploded Views and Parts List SAM4S NR 500 SERIES 6 21 MEMO All manuals and user guides at all guides com...
Страница 74: ...8 Troubleshooting 8 8 SAM4S NR 500 SERIES MEMO All manuals and user guides at all guides com...
Страница 80: ...10 Wiring Diagram 10 4 SAM4S NR 500 SERIES MEMO All manuals and user guides at all guides com...
Страница 101: ...All manuals and user guides at all guides com a l l g u i d e s c o m...
Страница 102: ...Shin Heung Precision Oct 2017 Printed in KOREA V1 6 All manuals and user guides at all guides com...