Brother International MD-817 Service Manual - Page 63

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LED 1 flashing #5 More than 15V NO Dispose of printed-circuit board. YES ±15V OUT: OK #5-1 YES NO Less than 15V Disconnect CN3. #5-2 15V OUT: OK #5-1 YES NO Power OFF Replace HIC5. CN3 connection ±15V OUT: 0O #5-3 YES Dispose of printed-circuit board. NO ±15V IN: OK #5-4 YES +15V NG Replace REG51 -15V NG Replace REG62. NO CN7 voltage: OK #5-5 NO Replace the transformer. YES Replace BD51. (P52) #5-4 092 ttst-ir: . , ,it,,„„ 56' §-art= V • 6 2 SI* .uoillikmM OilkigMEINUOU It2I1 t EIMBONETW3IM I IN. OP AI. SIIL M.' :4 ..., , _ i te a„ ;j 64 #5-1, #5-3 (D201 ,A") '''Imia 1.7/ 7cmiseit - 2 l.•,„ - la.5._#- J-r, ! . e"E".-4-i'1i GFos #5-4 5-2 m .. . .. .,4 . 4._..."; * --,c7 D201 „K" Ft q9 iM 88 N #5-4 (D204 „A-) O204 „A" 1. 7 a a iMEC #5-1, #5-3 (D204 „K") #5-5 CN7 10ms or less +25V or more -25V or less #5-5 0BV CN7 Yellow wire Black wire Yellow wire AC 20±4V #5 related OBV: Check pin OBV (CP2) ±15V OUT: OK #5-1 D201 „A" +15 0,5V D204 ,,K" -15±0.5V ±15V OUT: 052 #5-3 D201 "A' 052 D204 „K" AC 40±8V ±15V IN: OK #5-4 Refer to the figure above. CN7 voltage: OK #5-5 Refer to the figure above. -59-

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LED
1
flashing
#5
More
than
15V
NO
Dispose
of
printed
-circuit
board.
5-2
YES
±15V
OUT:
OK
#5-1
YES
Replace
HIC5.
NO
Less
than
15V
Disconnect
CN3.
#5-2
15V
OUT:
OK
#5-1
YES
CN3
connection
NO
Power
OFF
±15V
OUT:
0O
#5-3
YES
Dispose
of
printed
-circuit
board.
NO
±15V
IN:
OK
#5-4
YES
+15V
NG
Replace
REG51
—15V
NG
Replace
REG62.
NO
CN7
voltage:
OK
#5-5
NO
YES
Replace
the
transformer.
Replace
BD51.
•
...•
.„„
092
ttst—
ir
:
.
,
V
•
6
2
SI*
M.'
:4
_
i
.uoillikmM
OilkigMEINUOU
I
IN.
OP
AI.
SIIL
,i
t
,,„„
56'
§—art=
(D201
,A")
#5-1,
#5-3
...,
,
It2I1
t
EIMBONETW3IM
;j 64
.--,..,
te
a„
/
.7
/
7
cmiseit
-
2
l•
-
'''Imia
,
.-
,
...1
la
Jr,
! .
e""i
1
G
.5._-
#
—
E.4
-4-'
i
Fos
#5-4
4._...";
*
.,„
--,c7-.•‘..
....
„;
m
..
.
..
.4
,
.
1.
7
a a
F
t
q9 iM
iMEC
88
N
#5-5
0BV
CN7
#5
related
OBV:
Check
pin
OBV
(CP2)
#5-4
(D204
„A
-
)
#5-1,
#5-3
(D204
„K")
#5-4
D201
„K"
(P52)
10ms
or
less
+25V
or
more
O204
„A"
#5-5
CN7
Yellow
wire
Black
wire
-25V
or
less
Yellow
wire
AC
20±4V
AC
40±8V
±15V
OUT:
OK
#5-1
±15V
OUT:
052
#5-3
±15V
IN:
OK
#5-4
CN7
voltage:
OK
#5-5
D201
„A"
+15
0,5V
D204
,,K"
-15±0.5V
D201
"
A'
052
D204
„K"
Refer
to
the
figure
above.
Refer
to
the
figure
above.
-59-