Anritsu 682XXB - Manual (Page 214)

5-48 682XXB/683XXB MM
TROUBLESHOOTING
TROUBLESHOOTING TABLES
Error 135 Modulator or Driver Failed
Description: Error 135 indicates a failure of the modulator in the
switched filter assembly or the modulator driver circuitry on the A9
PIN Control PCB.
Step 1. Replace the A9 PCB and run self-test.
G If error 135 is not displayed, the problem is cleared.
G If error 135 is still displayed, go to step 2.
Step 2. Replace the switched filter assembly and run self-test again.
G If error 135 is not displayed, the problem is cleared.
G If error 135 is still displayed, contact your local ANRITSU
service center for assistance.
Table 5-20. Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (8 of 8)