
1 (E)
HKDV-900
Table of Contents
Manual Structure
Purpose of this manual ........................................................................................ 3 (E)
Related manuals................................................................................................... 3 (E)
Contents ............................................................................................................... 4 (E)
1. Service Overview
1-1. Main Parts Layouts ............................................................................... 1-1 (E)
1-2. Removing/Reinstalling the Cabinets ..................................................... 1-2 (E)
1-2-1. Top Panel ............................................................................. 1-2 (E)
1-2-2. Front Panel ........................................................................... 1-2 (E)
1-3. Removing/Reinstalling the Boards ....................................................... 1-3 (E)
1-3-1. CP-365 Board ....................................................................... 1-3 (E)
1-3-2. CP-364 Board ....................................................................... 1-3 (E)
1-4. Replacing the Rotary Encoder .............................................................. 1-4 (E)
1-5. Replacing the Switching Regulator ....................................................... 1-5 (E)
1-6. Replacing the NV-RAMs ...................................................................... 1-5 (E)
2. Troubleshooting
2-1. Normal Diagnostic Function (Power ON Test) .................................... 2-1 (E)
2-2. Self Diagnostic Mode ............................................................................ 2-1 (E)
2-2-1. Required Tool ....................................................................... 2-2 (E)
2-2-2. Location of Knobs and Buttons on the Front Panel ............. 2-2 (E)
2-2-3. Starting and Quitting of the Self Diagnostic Mode .............. 2-3 (E)
2-2-4. Selecting and Executing of the Test Item ............................ 2-3 (E)
2-2-5. Test Procedure ...................................................................... 2-4 (E)
2-3. Troubleshooting .................................................................................... 2-8 (E)
2-3-1. Troubleshooting for the Power-on Sequence Error ............. 2-8 (E)
2-3-2. Troubleshooting for Test Selection Error .......................... 2-12 (E)
2-3-3. Troubleshooting for ROM Version Display Error .............2-13 (E)
2-3-4. Troubleshooting for ROM Test Error ................................ 2-13 (E)
2-3-5. Troubleshooting for RAM Test Error ................................ 2-13 (E)
2-3-6. Troubleshooting for NV-RAM Test Error ......................... 2-14 (E)
2-3-7. Troubleshooting for LED Test Error .................................. 2-14 (E)
2-3-8. Troubleshooting for 7SEG LED Test Error .......................2-18 (E)
2-3-9. Troubleshooting for Switch Test Error .............................. 2-18 (E)
2-3-10. Troubleshooting for Rotary Encoder Test Error ................ 2-20 (E)
2-3-11. Troubleshooting for RS-422A Test Error .......................... 2-22 (E)