Adjustment Procedures

2715 Spectrum Analyzer Service Manual 5-5

Instrument Botto m View

The following figure callsout 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 referredto in following adjustment sections.

TP250 R639 HV
R669DT C
Availableon
serialnumber
B030000and up
instruments.
TP190 TP120
+20V
GND
-- 1 1 V
+5V
+10V +50V
R703
ZAxis

Power Supply Board

MicroprocessorBoard
Phase
Lock/CFC
Assembly
LogAmplifier BoardDisplayStorage
Board
R704
ASTIG
R680
LOCK
R705
GEO

Sweep Board

R110FOCUS
R937
+5VADJ
R910
VERT
GAIN
R900
HOR
GAIN
R280
R290
R740
R640
TP2
TP1
+6.5V
TP293
--2.75KV
TP270
DigitalOptions / IF Gate Board
RF Options
+115V
-- 5 V
TP
VideoDemod
Board

Figure 5-1: Instr ument Bottom View