Sony Tektronix WFM 1125, Service Manual

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WFM 1125 Option 0A/0B/0C/0D Service Manual
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Troubleshooting
This subsection contains diagnostic procedures and troubleshooting trees
designed to help you isolate faulty modules in the waveform monitor.
Diagnostics
The WFM 1125 Digital Television Waveform Monitor Option 0A/0B/0C/0D has
internal diagnostics that focus on verifying, adjusting, and if need be, isolating
faulty modules.
Display DIAG/CAL menu on the screen. Refer to DIAG/CAL Menu on page
2–14 for the DIAG/CAL menu structure and those operation information.
1. Turn on the power switch on the rear panel.
2. Press the INTEN/MENU button while holding down the lowest bezel button
to enter into the DIAG/CAL menu.
3. Press DIAG/CAL bezel button.
Check the front panel buttons, knobs and LEDs.
Buttons and knobs.
4. Select KEY/KNOB from the menu.
a. When you press a button on the front panel except for the third bezel
button, the name associated with the button is displayed on lower part of
the CRT. Press all the front panel buttons except for the third bezel
button, and confirm that all the buttons operate properly.
b. Turn the knob clockwise and anticlockwise to confirm that the name of
the corresponding knob followed by INC or DEC is displayed on the
lower part of the screen. Do this procedures for all the knobs on the front
panel.
5. Select KEY/KNOB from the menu.
LEDs.
6. Select LED from the menu and confirm that all the LEDs on the front panel
light.
Preparation
Front panel buttons,
knobs and LEDs