4020 SX  (250-4902/3)          Troubleshooting          Faxback Doc. # 1615

┌────────────────────┬─────────────────────────────────────────┐
│  Symptom           │ Solution                                │
├────────────────────┼─────────────────────────────────────────┤
│  No display        │ *  The monitor and/or power cable is    │
│                    │    not properly plugged in.             │
│                    │ *  The monitor is not turned on.        │
│                    │ *  The brightness and/or contrast       │
│                    │    control on the monitor is not        │
│                    │    turned up far enough.                │
│                    │ *  Computer is turned on.               │
│                    │ *  All jumpers and switched are set     │
│                    │    correctly.                           │
├────────────────────┼─────────────────────────────────────────┤
│  F1 SETUP error    │ *  The Setup utility was not run.       │
│  when you start    │                                         │
│  up the system.    │                                         │
├────────────────────┼─────────────────────────────────────────┤
│  Distorted images  │ *  The software is not configured or    │
│  or a blank screen │    compatible with the VGA graphics     │
│  when you run your │    adapter's current video configuration│
│  software.         │    Run VGA1024.EXE.                     │
├────────────────────┼─────────────────────────────────────────┤
│  No keyboard action│ *  Keyboard cord is plugged in          │
│                    │    solidly.                             │
│                    │ *  Computer power switch is pressed to  │
│                    │    the "on" position.                   │
│                    │ *  Keyboard password is enabled         │
├────────────────────┼─────────────────────────────────────────┤
│  Setup problems    │ *  System cords are plugged in          │
│                    │    solidly.                             │
│                    │ *  Expansion adapters are properly      │
│                    │    seated.                              │
│                    │ *  All jumpers and switches are set     │
│                    │    correctly.                           │
│                    │ *  Hardware information entered with    │
│                    │    the Setup utility is correct.        │
│                    │ *  CMOS RAM battery is properly         │
│                    │    connected.                           │
│                    │ *  Hard drive is properly initialized   │
├────────────────────┼─────────────────────────────────────────┤
│  Options not       │ *  Expansion adapter is properly        │
│  working           │    seated.                              │
│                    │ *  System cords are plugged in          │
│                    │    solidly.                             │
│                    │ *  All jumpers and switches are set     │
│                    │    correctly.                           │
│                    │ *  Setup program is executed after      │
│                    │    installation.                        │
│                    │ *  Hardware information entered with    │
│                    │    Setup is correct.                    │
│                    │ *  CPU clock speed is set correctly.    │
│                    │ *  Bus speed is set correctly for       │
│                    │    option expansion adapter.            │
└────────────────────┴─────────────────────────────────────────┘

(/tmc-05/06/95)