Tektronix SPG600 - Figure 6-1: Troubleshooting Procedure (1)

Troubleshooting
6-38 SPG600 & SPG300 Sync Pulse Generators Service Manual
Troubleshooting Trees
Figure 6-1: Troubleshooting procedure (1)
Connect the power
cable to the AC line
connector
Is the fan on the
power supply
module working?
Yes
No
Replace the power supply module.
Start
1
Is TP20* on the A10
Main board at +5V?
(See Figure 6-5)
No
Is TP21* on the A10
Main board at +12V?
(See Figure 6-5)
No
Yes
Yes
Is TP15 on the A10
Main board at -12V?
(See Figure 6-5*)
No
Yes
*TP13 for SPG300 (see Figure 6-6)
*TP14 for SPG300 (see Figure 6-6)
*For SPG300, see Figure 6-6.