Tektronix TDS 420A Service Manual

Troubleshooting
6-96
TDS 420A, TDS 430A & TDS 460A Service Manual
No
Yes
Perform the Low Voltage
Power Supply
troubleshooting procedure.
Use this procedure to check the
power to the A04 Acquisition and
A05 Attenuator boards.
Using
Table 6--16 and
Figure 6--48, are the
A04 Acquisition board
power supply voltages
ok?
Perform the Low Voltage
Power Supply
troubleshooting procedure.
Using
Table 6--15 and
Figure 6--46, are the
A05 Attenuator board power
supply
voltages
ok?
Power to the A04 Acquisition and
A05 Attenuator boards is ok.
No
Yes
Figure 6- 47: Acquisition and Attenuator Power Troubleshooting Procedure
Table 6- 15: A05 Attenuator Boar d Power
J101 Pin Voltage High Low
7 +5.1 V +5.15 V +4.9 V
10 +6 V +6.6 V +6.0 V
14 -- 6 . 4 V -- 6 . 0 V -- 6 . 5 V
16 +15 V +15.3 V +14.7 V
17 -- 1 5 V --14.7 V --15.3 V

Tektronix TDS 420A Specifications

General

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English