GEKCO DIGITAL CLOCK P/N CLK056 ASSEMBLY & OPERATION MANUAL
GEKCO INC. Rev 1.0 1
TABLE OF CONTENTS
1. INTRODUCTION................................................................................................................................................ 3
2. OPERATIONAL SUMMARY.......................................................................................................................... 3
3. PARTS AND UNPACKING.............................................................................................................................. 4
3.1. TOP LEVELPARTS LIST ...................................................................................................................................... 4
3.2. DISPLAY BOARD PARTS LIST.............................................................................................................................. 5
3.3. MAIN BOARD PARTS LIST................................................................................................................................... 6
3.4. FINALASSEMBLY HARDWARE PARTS LIST....................................................................................................... 7
3.5. ENCLOSURE PARTS LIST..................................................................................................................................... 8
4. ASSEMBLY NOTES........................................................................................................................................... 9
4.1. TOOLS............................................................................................................................................................... 9
4.2. ASSEMBLY ...................................................................................................................................................... 9
4.3. SOLDERING..................................................................................................................................................... 9
5. STEP-BY-STEP ASSEMBLY .........................................................................................................................10
5.1. DISPLAY CIRCUIT BOARD.................................................................................................................................10
5.2. MAIN CIRCUIT BOARD......................................................................................................................................14
6. INITIAL TESTS.................................................................................................................................................16
7. FINAL TESTS....................................................................................................................................................17
8. IN CASE OF DIFFICULTY............................................................................................................................17
9. FINAL PCA ASSEMBLY................................................................................................................................17
10. FINAL ASSEMBLY......................................................................................................................................17
11. THEORY OF OPERATION.......................................................................................................................20
11.1. BLOCK DIAGRAM..............................................................................................................................................20
11.1. MAIN BOARD CIRCUIT DESCRIPTION...............................................................................................................20
11.2. DISPLAY BOARD CIRCUITDESCRIPTION.......................................................................................................... 21
12. FIRMWARE.................................................................................................................................................. 22
12.1. FLOW CHART ....................................................................................................................................................22
12.2. FIRMWARE DESIGN DESCRIPTION....................................................................................................................23
13. PCA PICTORIAL DIAGRAMS.................................................................................................................23
13.1. MAIN BOARD....................................................................................................................................................23
13.2. DISPLAY BOARD ...............................................................................................................................................24
14. SCHEMATIC MAIN BOARD.................................................................................................................... 26
15. SCHEMATIC DISPLAY BOARD.............................................................................................................27
16. DOCUMENT REVISION HISTORY........................................................................................................28
