Panasonic NE-7910 Service Manual page 30

[TROUBLE 4]
CONDITION
L—»| Check voltage being
1.| No diode
current
2.| Low diode
current
NOTE 2:
supplied to variable
power swithc coil
NOTE 2
RESULT ~|~
; REMEDY
Normal...) 2:
Defective digital
programmer
circuit
:
3 | Replace |
Check if any A.C.
current flows
through 100
| resistor
aa No
current
Faulty variable
power switch:
+
Replace |
Refer to compo-
nent test pro-
cedure on page
33.
Faulty insulation
of filament
winding of high
voltage trans-
former
Open secondary
winding of high
voltage trans-.
former
Refer to compo-
nent test pro-
cedure on page
32.
Faulty
magnetron
+
Replace
[Ree
| Replace
Refer to compo-
nent test pro-
cedure on page
32.
>| | Yes
eel
y
Shorted stack
diode
Refer to compo-
nent test pro-
cedure on page
32.
|
Replace |
Faulty magnetron
oscillation
:
Replace
—30—