TallyGenicom 6300 Series, Maintenance Manual

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6300 Series Maintenance Manual
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3.4.2 Printer Powers Up but the Control Panel Does Not Function.
There are four things that can cause this problem.
1. A bad connection.
2. A bad control panel.
3. A bad Controller Board.
4. Loss of 5 V power supply.
NOTE: If the yellow Power On Indicator is the only one that does not function, the
problem is most likely a malfunctioning Control Panel.
Step 1. Check the form movement keys to see if they function.
If the form movement keys function properly, the problem is either in the Control
Panel or in the Controller Board.
Try another Control Panel first. If that does not correct the problem, then remove and
replace the Controller Board.
Step 2. If the form movement keys do not function properly, check the Control Panel
connection to the Controller Board.
If the connection is OK, the problem is in either the Control Panel or in the Controller
Board. Try another Control Panel first. If that does not correct the problem, then
remove and replace the Controller Board.
3.4.3 Control Panel Display Functions Partially, Nonsensically, or Not At All.
There are three things that can cause this problem.
1. A bad connection.
2. A malfunctioning Control Panel.
3. A malfunctioning Controller Board.
Step 1. Check the Control Panel connection to the Controller Board.
Step 2.
If the connection is OK, the problem is in either the Control Panel or in the Controller
Board.
Try another Control Panel first. If that does not correct the problem, then remove and
replace the Controller Board.