Operating instructions

I
lO-1l1HZ
TRIMMER
CRYSTAL OVEN
ASSE~mLY
CARRIER
FREQUENCY
SELECTOR
•
(CH-A~)
Figure 5-2 . CE-7 Bottom Interior View
Table 5·2. Pow er-Supply Bo ard, Voltage Adju stment
[
[
C
l
KI-J3
U
COAXIAL RELAY
(CH-Kl>
A3-J2
SIGNAL GENERATOR
MIXER (CH-A3)
STEP
Fl -NCTION
TEST POIKT OR
ADJ USTMENT
PERFORMANCE
STANDARD
lA
Me asure -Lz-volt sup ply to chas s is
gr oun d (s ee Fi gure 5-3 ).
TBI-3 (orang e
wires)
-12 volts
IB
Adjust lower potenti om eter
(s
ee Figure 5-1).
R27 (CH-A5)
-12 volts
2A
Mea sure +20- volt supply to chas s is
ground (see Figure 5-3).
TB1-1 (red wires)
+20 volts
2B
Adjust upper potent iometer
(see Figure 5-1).
R9 ( CH-A5) +20 v olts
3A
Measur e +5-v olt su pply (s ee
Figure 5- 1).
CH-J6-15 (green
wires)
B etw een 4.8 and
5.2 volts.
4A
M
easur e -1 2- and +20-volt rippl e
at test p oints sp ec ifi ed in steps
lA and 2A wit h vtvm.
Le
ss than 1. 0
millivolt.
5-4
5601"0015"1