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TROUBLESHOOTING
SYMPTOM: POWER CIRCUIT ABNORMAL
Start
Is the
AC power of
C333 220V?
yes
Is the
DC power of
C305 310V?
yes
Is the
voltage at pin 4
& pin 6 of N301
13V?
yes
Does the secondary
transformer output
+13V,+18V, +25V
& -24V?
yes
Replace Power
PWB Assy.
(To replace Pg 29-39 of SC No. 0015E)
Secure the
connection of
no
power cord.
Replace F3011.
Replace L301.
no
Replace Power
PWB Assy.
Replace N301.
no
Replace T301.
Replace V304.
no
Replace Power
PWB Assy.
(REVISED)
Set OK?
yes
no
Check other
SYMPTOM
7
No defect, return
set to customer
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