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August 22, 2008
7-13
SERVICE MANUAL
FABRICATOR 251
7.16 Rectifier Assembly Test
1. Disconnect one of the Main T
r
ansfo
r
me
r
connections f
r
om the
r
ectifie
r
assembly.
2. Disconnect and isolate wi
r
es f
r
om the Negative output of the Rectifie
r
Assembly See Figu
r
e 7-3.
3. Disconnect JB connecto
r
f
r
om MAIN PCB 1.
4. Using a mete
r
check the diode
r
eadings between the following points:
Fo
r
wa
r
d biased diode junction:
Positive mete
r
p
r
obe on
r
ectifie
r
plates 2 and 3 to plates 1 & 4
Negative mete
r
p
r
obe on
r
ectifie
r
plates 1 & 4 to plates 2 & 3
Art # A-07575
1
2
3
4
Remove a
n
d i
s
olate from rectifier a
ss
embly
Figu
r
e 7-3: Rectifie
r
Assembly Test
Double fo
r
wa
r
d biased junction:
Positive mete
r
p
r
obe on
r
ectifie
r
plates 1 & 4 to positive
r
ectifie
r
output te
r
minal (Pictu
r
e needed)
Summary of Contents for FABRICATOR 251
Page 2: ......
Page 22: ...FABRICATOR 251 SERVICE MANUAL 2 6 August 22 2008 NOTES ...
Page 38: ...3 16 August 22 2008 FABRICATOR 251 SERVICE MANUAL NOTES ...
Page 54: ...4 16 August 22 2008 FABRICATOR 251 SERVICE MANUAL NOTES ...
Page 80: ...8 4 August 22 2008 FABRICATOR 251 SERVICE MANUAL NOTES ...
Page 94: ...FABRICATOR 251 A 4 August 22 2008 APPENDIX 3 MAIN PCB CIRCUIT DIAGRAM 30 VAC Art A 08574 ...
Page 95: ...FABRICATOR 251 August 22 2008 A 5 DESCRIPTION FABRICATOR MAIN PCB 7977964 Art A 08574 _ ...
Page 96: ...FABRICATOR 251 A 6 August 22 2008 APPENDIX 4 SPOT TIMER CIRCUIT DIAGRAM Art A 08575 ...
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