General Maintenance
WFM6100, WFM7000, and WFM7100 With Option FP Service Manual
4- 15
Check the secondary supplies on the Analog Audio board, if installed. This is the
smaller audio card to which the 62 pin DSUB connector is mounted. The test
points are available, with the board installed, along the top front edge of the
board at the location specified in Figure 4--3 on page 4--24.
Table 4- 7: Analog Audio secondary supplies
1
Supply name
Range
Notes
+15 V
14 to 15.5
TP901
--15 V
--14 to --15.5
TP803
+5 VD
4.8 to 5.2
TP5
+5 VA
4.8 to 5.2
TP3
+3.3 V
3.1 to 3.6
TP2
--5 V
--4.5 to --5.5
TP1
1
Board not present for Option DS instruments.
The Eye board also has multiple secondary supplies, and test points along the top
edge where they can be probed. The power up self test (POST) measures these so
they are not included in this procedure. Note that some of these supplies are only
active in either SD or HD mode, so it is normal for some of them to not be
present in some operating modes.
Perform this test if the power supplies are good, but none of the buttons are lit or
respond to presses.
1.
Cycle the power to the unit, and immediately look at the front panel. The
MAG, LINE SELECT, and CURSOR buttons should be lit. The other
front-panel buttons will light one at a time, in sequence. Verify that all
buttons do light.
2.
If the buttons are not lit, check the 10 pin cable from the keypad to the Main
board J29. If the cable is connected and good then replace the front panel
assembly.
Perform this test if there is no display on the LCD, but the power supplies test as
nominal.
1.
Connect an external XGA monitor to the “Display” output on the rear of the
instrument.
2.
Cycle the power and watch the external monitor. If the monitor does not
display the boot up messages and normal operational screen replace the Main
board.
Front Panel Button
Troubleshooting
LCD troubleshooting
Summary of Contents for WFM6100 Opt. MB
Page 4: ......
Page 12: ...Service Safety Summary viii WFM6100 WFM7000 and WFM7100 With Option FP Service Manual ...
Page 64: ...Repackaging Instructions 4 34 WFM6100 WFM7000 and WFM7100 With Option FP Service Manual ...
Page 76: ...Replaceable Parts 5 12 WFM6100 WFM7000 and WFM7100 With Option FP Service Manual ...