Panasonic SR-DF101 Service Manual page 21

8 Inspection method of components on control board
LED5 LED
Detection Qualifi ed Defective
method
If LED5 lights up Yes No
when it is short-
circuited between
TP [G] and [L5]?
SW4 Tact switch
Detection Qualifi ed Defective
method
H o l d d o w n Yes No
S W 4 a n d
m e a s u r e i f
the resistance
b e t w e e n T P
[VD] and [S4]
is 0 Ω?
LED4 LED
Detection Qualifi ed Defective
method
If LED4 lights Yes No
up when it is
short-circuited
between TP
[G] and [L4]?
SW2 Tact switch
Detection Qualifi ed Defective
method
H o l d d o w n Yes No
S W 2 a n d
m e a s u r e i f
the resistance
between TP
[VD] and [S2]
is 0 Ω?
RL Relay
Inspection method Qualifi ed Defective
Connect TP[G]-[RL1], Yes
and check if the power
c o n s u m p t i o n i s t h e
rated cooking power.
Unplug the power and Yes
check if the resistance
between TP [A1] and
[RL5] is ∞ Ω?
N o t e 1 : D i s c o n n e c t
t h e c o n n e c t o r C N 3
before measuring the
resistance.
Note 2: Connect one
end of TP [A1] to the
positive terminal.
SW5 Tact switch
Detection method Qualifi ed Defective
H o l d d o w n S W 5 Yes
and measure if the
resistance between
TP [VD] and [S5] is
0 Ω?
No
No
SW6 Tact switch
Detection method Qualifi ed
No
H o l d d o w n S W 6 Yes
and measure if the
resistance between
TP [VD] and [S6] is
0 Ω?
19
X1 Crystal
Detection Qualifi ed Defective
Defective
method
No
Output 8 MHZ Yes
between TP
[G] and [X1]?
SW3 Tact switch
Detection Qualifi ed Defective
method
H o l d d o w n Yes
S W 3 a n d
m e a s u r e i f
the resistance
b e t w e e n T P
[VD] and [S3]
is 0 Ω?
LED3 LED
Detection Qualifi ed Defective
method
If LED3 lights Yes
up when it is
short-circuited
b e t w e e n T P
[G] and [L3]?
SW1 Tact switch
Detection Qualifi ed Defective
method
H o l d d o w n Yes
S W 1 a n d
m e a s u r e i f
the resistance
b e t w e e n T P
[VD] and [S1]
is 0 Ω?
LED1 LED
Detection Qualifi ed Defective
method
If LED1 lights Yes
up when it is
short-circuited
between TP [G]
and [L1]?
LED2 LED
Detection Qualifi ed Defective
method
If LED2 lights Yes
up when it is
short-circuited
between TP [G]
and [L2]?
No
No
No
No
No
No