6 Troubleshooting
6-6
SAM4S ER-900/SPS-300 SERIES
6-7 Main B’D problem (Key Board, Mode key, Drawer, MCR, Dallas-key)
6-7-1 Key Board & Mode Key
Key Board Operation Fail
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Check the FPC harness between Key Board and Main B’D.
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Check the key scan part (74LVC138, U21, U23, U24) and key return part(74LVC541, U28).
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Change the Key Board Ass’y
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Check related circuit & component whether short or not.
Mode key Operation Fail
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Check the harness between Key Board and Main B’D.
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Check the harness between Key Board and Mode Key Assy.
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Check the key return part(74LVC541, U28).
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Change the Mode Key Assy
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Check related circuit & component whether short or not.
6-7-2 Drawer & Compulsory
Drawer Operation Fail
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Check the harness between I/F B’D and Main B’D.( Wire harness 14pin)
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Check Drawer specification whether it is +24V drawer or not.
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Check the cable. Refer to Chapter 2 for cable connection.
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Check related circuit & component whether short or not.
Compulsory Fail
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Check the cable and compulsory connector.
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Check the micro switch in the Drawer.
6-7-3 MCR (Magnetic Card Reader)
Operation Fail
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Check the harness between MCR and Main B’D, if it is connected or not.
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Check the IC- Buffer chip (74LVC541, U35).
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Check the CPU on Main B’D whether it works normally or dead.
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Check related circuit & component whether short or not.
6-7-4 Dallas-Key
Operation Fail
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Check the harness between Dallas-Key and Main B’D, if it is connected or not.
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Check the CPU on Main B’D whether it works normally or dead.
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Check related circuit & component whether short or not.
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If these are OK above but Dallas-Key does not work, Please contact our R&D.
Summary of Contents for ER-900 Series
Page 38: ...5 Maintenance and Adjustment 5 2 SAM4S ER 900 SPS 300 SERIES MEMO ...
Page 78: ...7 Exploded View and Parts List 7 34 SAM4S ER 900 SPS 300 SERIES MEMO ...
Page 79: ...SAM4S ER 900 SPS 300 SERIES 8 1 8 PCB Layout and Parts List 8 1 Main PCB ...
Page 84: ...8 PCB Layout and Parts List 8 6 SAM4S ER 900 SPS 300 SERIES 8 2 I F PCB ...
Page 90: ...8 PCB Layout and Parts List 8 12 SAM4S ER 900 SPS 300 SERIES 8 7 OPTION I F 232 USB PCB ...
Page 94: ...8 PCB Layout and Parts List 8 16 SAM4S ER 900 SPS 300 SERIES MEMO ...
Page 95: ...SAM4S ER 900 SPS 300 SERIES 9 1 9 Wiring Diagram 9 1 Main PBA Block Diagram ...
Page 108: ...10 Block Diagram 10 2 SAM4S ER 900 SPS 300 SERIES MEMO ...
Page 130: ...11 22 SAM4S ER 900 SPS 300 SERIES MEMO ...
Page 132: ...ⓒ Shin Heung Precision MAY 2011 Printed in KOREA V1 0 Code No JK68 XXXXXA ...