
TROUBLESHOOTING
| SYMPTOMS | SOLUTIONS | 
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| A 4:3 Aspect ratio cannot be selected. | - Aspect ratio depends on both the incoming program format and the dis- | 
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 | play format switch on the back panel. Once the switch for the display for- | 
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 | mat is set to a standard definition (480I/480P) and the incoming program | 
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 | is set at a 4:3 video, it is not be available for selection and a warning mes- | 
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 | sage will appear on the screen. | 
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| A 16:9 Aspect ratio cannot be selected. | - Similar to the above case, once the switch for a display format is set to a high | 
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 | definition (720P/1080I) and an incoming program is set at a 16:9 video, it will | 
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 | not be available for selection and a warning message will appear on the screen. | 
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| The remote control is not respinding. | - Make sure the batteries are fresh and installed properly. | 
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 | - Point the remote control unit at the remote control sensor. | 
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 | - Check if a mode on the remote control is selected properly. | 
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| The timer does not work. | - Make sure the clock is set properly. | 
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| You forget your password. | - If you are a DIRECTV customer, make a call at DIRECTV Service Center and ask | 
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 | them to clear your password. | 
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 | - Otherwise, if the Zenith HD Receiver is in the ANT/CABLE mode, enter mas- | 
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 | ter key number “7777” when it asks you to enter the password. | 
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