Keysight Technologies E8257D User Manual

E8257D/67D, E8663D PSG Signal Generators Service Guide 43
Troubleshooting
Troubleshooting Assembly–Level Problems
Table 1-10 E8267D Power Supply vs. Assembly Matrix (3 of 5)
Motherboard Test Points:
LED
+3.4D
LED
+2.6VD
LED
–7 VDC
LED
–6 VDC
LED
–15 VDC
–15 VAF
A2DS1 Backlight P12–1
A3 Power Supply J236–A4–6,
C4–6, E4–6
J237–A4–6,
B1–3,
C4–6, D1–3
J238–A4–6,
B1–3, E4–6
J239–A4–6,
B1–3
J233–A4–6, C4–6,
E4–6
J231–C4–6
,
E4–6
A5 Sampler P22–3, 18 P22–2
A6 Frac N P32–3, 18 P32–2
A7 Reference P42–3, 18 P42–2
A8 Lowband Output P52–3, 18 P52–2
A9 YIG Driver P111–60, 61, 62,
63, 125, 126,
127, 128
P112–57, 58,
59, 123, 124
P112–11, 12, 13,
14, 38
P112–19,
44
a
P112–4, 29
A10 ALC P122–60, 61, 62,
63, 125, 126,
127, 128
P122–57, 58,
59, 123, 124
P122–3
A11 Mod Gen P132–60, 61, 62,
63, 125, 126,
127, 128
P132–57, 58,
5,
123,124
P132–3
A13 I/Q Multiplexer P151–60, 61, 62,
63, 125, 126,
127, 128
P151–57, 58,
59, 123, 124
P152–3
A14 Baseband Generator P161–60, 61, 62,
63, 125, 126,
127, 128
P161–57, 58,
59, 123, 124
P162–3
A18CPU P222–45, 46, 47,
48, 95, 96, 97,
98
P223–37 P223–17 P223–3
A21 Rear Panel P241–15,
16
A23 Lowband Coupler/Det J15–10
A26 Microwave Interface P201–24 P201–30, 33, 46 P201–11,
12
A27 40 GHz Doubler J36–4
A29 20 GHz Doubler J32–4
A30 20 GHz Mod Filter J31–4
A35 20 GHz I/Q Modulator
J34–4
b

Keysight Technologies E8257D Specifications

General

Brand	Keysight Technologies
Model	E8257D
Category	Portable Generator
Language	English