Keysight Technologies E8257D User Manual

E8257D/67D, E8663D PSG Signal Generators Service Guide 39
Troubleshooting
Troubleshooting Assembly–Level Problems
AT1 Attenuator J13–2
Table 1-7 E8257D/E8663D Power Supply vs. Assembly Matrix (3 of 3)
Motherboard
test points: –15 Vdc –5.2 Vdc –3 Vdc +3.5 Vdc +6.5 Vdc +12 Vdc +15 Vdc stby
Fan
Voltage
A2 Display P11–43
A3 Power Supply P231–12,
13, 52, 53
P231–80
A5 Sampler P22–2, 17 P22–4,
19
A6 Frac–N P32–2, 17 P32–4,
19
A7 Reference P42–2, 17 P42–4,
19
A8 Output P52–2, 17 P52–4,
19
A9 YIG Driver P112–4,
29
P112–1,
2, 26, 27
A10 ALC P122–3 P122–1,
26
A11 Mod Gen P132–3 P132–1,
26
A12 Pulse Modulator J14–7 P201–31,
32
A18 CPU P223–3 P223–1 P223–21
A21 Rear Panel P241–15,
16
P241–9,
10
P241–5, 6, 7,
8
A23 Lowband
Coupler/Detector
J15–10
A26 Microwave Interface P201–11,
12
P201–31,
32
A27 40 GHz Doubler
(E8257D only)
J33–4 J33–8
A29 20 GHz Doubler J32–4 J32–8 J32–1, 3
A30 Mod Filter J31–4 J31–8 J31–1, 3
A36 Quadraplier
(E8257D only)
J34–3 J34–17 J34–11, 12,
13, 14, 15
J34–8, 9
Table 1-6 E8257D/E8663D Power Supply vs. Assembly Matrix (2 of 3) (Continued)
Motherboard test points: +5.2 Digital +3.4 Digital +2.6 Vdc –7 Vdc –6 Vdc +1.8 Vdc

Keysight Technologies E8257D Specifications

General

Brand	Keysight Technologies
Model	E8257D
Category	Portable Generator
Language	English