Troubleshooting
5- 78
RSA3408B Analyzer Service Manual
J410
A70 DC power board
J302
J300
Test points (from left to right)
Upper: TP216 TP222 TP208 TP204 TP202 TP220
Lower: TP214 TP210 TP212 TP218 TP200 TP206
Power indicator LEDs
Figure 5- 39: A70 DC power supply board
Table 5- 7: Test point voltages on A70
Test point
Normal voltage
Low limit
High limit
TP216
+3.3 V
+3.14 V
+3.46 V
TP222
--6.6 V
--6.93 V
--6.27 V
TP208
+6.6 V
+6.27 V
+6.93 V
TP204
+9 V
+8.55 V
+9.45 V
TP202
+15 V
+14.25 V
+15.75 V
TP220
--6.6 V
--6.93 V
--6.27 V
TP214
+5 V
+4.75 V
+5.25 V
TP210
+6.6 V
+6.27 V
+6.93 V
TP212
+5 V
+4.75 V
+5.25 V
TP218
--15 V
--15.75 V
--14.25 V
TP200
+20 V
+19 V
+21 V
TP206
+6.6 V
+6.27 V
+6.93 V
Symptoms and Faulty Modules
Fault symptoms can help you identify faulty boards or modules. Fault symptoms
and suspected boards or modules are listed in Table 5--8.
Содержание RSA3408
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