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Adjustment Procedures
2715 Spectrum Analyzer Service Manual
5-5
Instrument Bottom View
The following figure calls out many of the circuit board locations. Adjustment and
test point locations are shown for the power supply module and sweep board. This
figure will be referred to in following adjustment sections.
TP250
R639 HV
R669 DTC
Available on
serial number
B030000 and up
instruments.
TP190
TP120
+20V
GND
-- 11 V
+5 V
+10V
+50 V
R703
ZAxis
Power Supply Board
Microprocessor Board
Phase
Lock/CFC
Assembly
Log Amplifier BoardDisplay Storage
Board
R704
ASTIG
R680
LOCK
R705
GEO
Sweep Board
R110 FOCUS
R937
+5VADJ
R910
VERT
GAIN
R900
HOR
GAIN
R280
R290
R740
R640
TP2
TP1
+6.5 V
TP293
--2.75KV
TP270
Digital Options / IF Gate Board
RF Options
+115 V
-- 5 V
TP
Video Demod
Board
Figure 5- 1: Instrument Bottom View