Service manual

ER-A242U CIRCUIT DIAGRAM AND PWB LAYOUT
– 18 –
6,8pin:N.C
P-OFF
VCC +5V
VH +7.86V +/-0.13V
HEAT SINK
<- CLOSE TO
REGURATOR
<- CLOSE TO
REGURATOR
HEAT SINK
OFF - OPEN
IPEAK>2.2A
IPEAK>2.2A
IPEAK>12A :100%
L:ON H:OFF
ON - GND
VOUT=1.23X(1+R4/R5)
L:OFF H,OPEN:ON
VO:23.8V
VLED +5.8V
with FUSE
Q1:HEAT SINK
VOUT=1.26X(1+R13/R14)
NO T USED
NOT INSTALL
NOT INSTALL
202V6/7:23 0V-240V 2021V4: 220V-230V
/VOF F
VO
VLE D
VCC
VDD
/POF F
VH
VB AT
VO
VP ON
/VO N
/VPON
/VOF F
/VOF F /POF F
VO
VCC VLE D
C12 0.02uF(M)
R1
22K
+
C6
10 uF/10V,OS
Q1
KT D998
Q2 KRC 106S
+
C8
33 0uF
16V
R2 49 33
R17 0
D4
1SS 133
POWER T RANS
202U/A : 120 V
F1
3.15A
R11 10K
MODE SW
IC1
LM 2574
1
57
3
4
2
D3
1SS 133
R16
9.1KG
C10
0.1uF
R19
56K
D6
RB060L40
C15
0.1uF
ZD2 PTZ 6.2A
R1 14
0
+ -
IC4B
BA10 393
5 6
7
84
R2 46
100
CN2
B2B-XH-A -E(BLUE)
1 2
ZD4 MTZ J5.1B
D2
FMB-G 24H
R13
10K
R14 560
F3
T1.0A L
R4 17.8KF
Q4 KRC 106S
ZD3
MTZJ 5.1B
D9 RB721Q
R18
3.9K
R7 91 0F
R20 2.7K
R6
2.7KF
Q3 KRA106 S
CN1
B2P -VH
1 2
R3 18K
L2
180 uH
D11 UD Z4.3B
+
C4
220 uF/50V
D8
1N40 02
R2 10(FUSE)
R5 3. 3KF
L1
63uH
R2 44
0
R1 13
2.2K
D5 1SS 133
+ -
IC4A
BA10 393
3 2
1
8
4
IC2
PQ1C
G2032FZ
1
4
2 5
3
+
C2
33 00uF
50V
R2 45
0
POWER T RANS
R12 51
+
C3
47 00uF
16V
C1
MYLO R 0.033u F
+
C13
1000 uF/35V
1 2
+
C5
10 00uF
16V
+
C14
1uF /50V
R8
220
R9
3. 3M
D7
1N40 02
R15
2.7K
L3
220 uH
C9
0. 1uF(M)
D10
RB060L40
IC3
PQ1C G2032FZ
1
4
2 5
3
R10
22K
R2 41
24K
ZD1
PTZ 9.1B
+
C11
220 uF/50V
-+
D1
CP301
A B
C D
87654
3
21
12345678
D C
B A A
B
C D
87654
3
21
12345678
D C
B A A
B
C D
87654
3
21
12345678
D C
B A A
B
C D
87654
3
21
12345678
D C
B A
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