Tektronix DSA8200 Series, Service Manual

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Troubleshooting
DSA8200 Digital Serial Analyzer and Modules Service Manual
4--87
Table 4--5: Power supply voltages
Front power distribution board (P2) Voltage Rear power distribution board (P1) Voltage
Pins A1, B1, C1 +3.3 V Pins A5, B5, C5 +12 V
Pins A13, B13, C13 --15 V Pins A8, B8, C8 +5 V
Pins A15, B15, C15 +15 V Pins A19, B19, C19 +3.3 V
Pins A17, B17, C17 --5 V
Pins A24, B24, C24 +5 V
Pins A17, B17, C17 --5.2 V
Pins A24, B24, C24 +5.2 V
P2 (power supply)
P1 (power supply)
Front power
distribution
circuit board
Rear power
distribution
circuit board
Figure 4--51: Connectors P1 and P2
If there is a display on the VGA port, but not on the LCD, replace the display
assembly (LCD, lamps, and cable).
If nothing is displayed, is the display turned on? At boot time and while using an
external monitor connected to the ATX external video port, press F2 to enter the
BIOS setup. The Advanced Video Configuration menu lets you select PCI (LCD)
or AGP (the ATX port on the rear panel). The lower VGA port on the rear panel
is the PCI video port (driven by the same video controller as the LCD).
If none of the above is true, the display adapter may be bad.
If the instrument Will Not
Boot