Tektronix j17 Manual do Utilizador Página 62

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Maintenance
Maintenance
6-6
3. Other problems are typically due to the A1 board.
If a power supply problem is suspected, perform
the procedure in     on
page 6-6 to verify that the power supply, and
not the battery, is at fault.
The A1 Board
Most functions of the J17 are located on the
A1 board.     on page 6-6
will allow you to determine whether there is a power
supply problem.
The A2 Display Board
The A2 Display board is probably at fault if:
H segments of the display are missing
H the backlight does not operate
To check the display, power on the J17 without a
sensorĆhead attached, and note whether all segĆ
ments of the display are activated.
If the entire display is inactive, or if the backlight does
not operate, proceed to    
to rule out a problem with the power supply.
Checking the Power Supply
To check the power supply, you will need:
H
3
/
32
Ăinch hex wrench
H Posidrivscrewdriver
H a DC voltmeter
(for voltages in the range 0 to 15 V)
H NineĆvolt, IEC 6LR61Ćtype alkaline battery
Maintenance
Maintenance
6-6
3. Other problems are typically due to the A1 board.
If a power supply problem is suspected, perform
the procedure in     on
page 6-6 to verify that the power supply, and
not the battery, is at fault.
The A1 Board
Most functions of the J17 are located on the
A1 board.     on page 6-6
will allow you to determine whether there is a power
supply problem.
The A2 Display Board
The A2 Display board is probably at fault if:
H segments of the display are missing
H the backlight does not operate
To check the display, power on the J17 without a
sensorĆhead attached, and note whether all segĆ
ments of the display are activated.
If the entire display is inactive, or if the backlight does
not operate, proceed to    
to rule out a problem with the power supply.
Checking the Power Supply
To check the power supply, you will need:
H
3
/
32
Ăinch hex wrench
H Posidrivscrewdriver
H a DC voltmeter
(for voltages in the range 0 to 15 V)
H NineĆvolt, IEC 6LR61Ćtype alkaline battery
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