Racal Instruments 9916 User Manual

POWER LEAD
5.4 Fit a suitable plug to the power lead in accordance with the standard colour code:-
LINE
NEUTPAL
EARTH (GROUND)
AC POWER SUPPUES CHECK
European
Brown
Blue
Green/Yellow
American
Black
White
Green
Resistance Check
5.5 With the power lead disconnected check the resistance of the transformer primary
circuit (including FS50) using the multimeter (Table 3 item 1). The resistance
shou [d be os shown in Table 4.
TAB LE 4
Power Supply Resistance lv\easurement
552 Position
Voltage
Selected
LO
HI
94-106/106-119 350 ± 60
390 ± 70
106-119/118-132
390 ± 70 440 ± 70
188-212/200-225 1220 ± 180 1300 ± 200
200-225/212-238 1300 ± 200
1380 ± 200
212-238/224-251
1380 ± 200 1450 ± 220
224-251/235-265 1450 ± 220 1530 ± 220
Supply Rai I Voltages
5.6
(1 )
(2)
(3)
(4)
Remove the covers and prepare the power supply os described in the
preceding paragraphs. Check that the a.c. supply voltage is correct.
Set the power source selector on the rear panel to LINE POWER.
With power supply connected, switch P~WER to ON.
Using the multimeter (Table 3 item 1) check the d.e. voltages at the
following points on the main p.c.b. Fig.3 at the back of the book
shows
the component layout.
7>916 Vol.2
Test Point
TP3
TP6
TP2
Measurement
+4 .9.5 V ± O. 15 V
-4.9V ± O.25V
+24V ± 2.4V
Remarks
Relative to chassis
or
TP5
5-4

Racal Instruments 9916 Specifications

General

Brand	Racal Instruments
Model	9916
Category	Measuring Instruments
Language	English