Diagnosis Of Disorder And Method Of Repair; Preliminary Examamination; No Input Power - Samsung SR-61KTC Service Manual

9. Diagnosis of disorder and method of repair

1. ELECTRICAL (SR-61KTC,65KTC)

Preliminary examamination

1. Check the power of consent and power code
2. Check it based on the :References" on the next pages.

1. No input Power

POWER CARD connection
-Caution-
MAIN PCB power part is
appesred high-pressure.
LEAD WIRE CABI, DOOR
(Cooent to the upside)
START
Ohiy aline AC 220V FUSE?
N
Is confimate 220V the
CN10 both sides?
Y
Only a line FUSE of MAINPCB?
N
Is confimate 300V the
BD 1(+),(-),?
Y
Is confimate DC5.
8Vthe the TOP S/W 223Y
among 'C-S'?
Y
Is confimate 12v the both
C104sides to?
Y
Is confimate 5v the both
sides to c103?
Y
Is PANEL PCB O.K?
Y
Is RELAY O.K?
Y
Nomal state
Y
Change main fuse
N
Check the eletric wire
construction
Y
Change fuse-250V 2A
N
Change PCB PATTERN
and change BD1
N
Change PCBASSY
N
Change D102(D10SC9M)
N
Change Reg1 (7805)
N
1. Check assembly line
and repair
2. Change parel PCB
N
1. Change pertinet RELAY.
2. Check contacted
LEADWIRE.
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