paco T-65 Assembly And Operating Manual page 26

Transistor and crystal diode tester kit
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8. Keep test leads as in step 7. Set Function Selector to NPN "lebo" and take one voltage
reading.
9. Leave T-65 Function Selector on NPN "lebo". Remove YOM test prods. Connect 4700-ohm
checking resistor across leads 2 and 4. Set "A" and
"c"
switches as shown in the following
table and depress "READ ME TERn button. Meter should read as indicated in corresponding
column, ±20%.
"c"
Switch
" A" Switc h
Meter Reads
1
1
74
2
2
58
3
6
50
4
12
60
5
13
16
10. Set Function Selector to PNP "lebo" and take a reading as in Step 9 (only one reading
needed).
11. Set Function Selector to "Dr" and take one reading as in Step 9.
12. Remove resistor and set Function Selector to PNP "L". Set YOM to 3 VDC or higher
range. Connect
(+)
YOM test prod tole.rull and (-, YOM test prod to lead 4. Set T-65
"B" switch to "5". Depress "READ METER" button. YOM should read 1. 75 VDC. (Same
as you obtained in Step 8 of "CALffiRATION PROCEDURE").
13. Set Function Selector to PNP "GX1" and repeat reading as in Step 12.
14. Set Function Selector to PNP "GX5" and repeat reading as in Step 12.
15. Set Function Selector to NPN "L" and repeat reading as in Step 12, except reverse YOM
test leads.
16. Set Function Selector to NPN "GXl" and repeat reading as in Step 12, except reverse YOM
test leads.
17. Set Function Selector to NPN "GX5" and repeat reading as in Step 12, except reverse YOM
test leads.
18. Set Function Switch to NPN "GXl". Remove YOM test prods. Connect 390-ohm and 33-ohm
check resistors in turn, as indicated in the following table, between Model T-65 leads 1 and
4. Set
!fB"
switch as shown. Depress "READ METER" button. Meter should read within
±20% of value listed in the following table.
Resistor connected
"B" Switch
Meter
between 1 and 4
Position
Reading
390 ohms
1
80
390 ohms
2
22
390 ohms
3
9
33 ohms
4
25
33 ohms
5
11
19. Repeat Step 18 for NPN
"Vi.
PNP "L" and PNP "GXl" positions. (Only one reading required
for each Function Selector position.)
20. Set Function Selector to PNP "GX5" position. Connect 390-ohm resistor between leads 1
and 4. Set
!fBI!
switch to position "1". Depress "READ METER" button. Meter should read
approximately 16.
Page 24

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