Hitachi RAF-50FX8 Service Manual page 42

Table of Contents

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WIRING DIAGRAM OF THE PRINTED WIRING BOARD
MODEL
RAF-50FX8
C o n t r o l   P . W. B.
L 1 0 1
(B R N)
(R E D)
T e r m i n a l  B o a r d
C N 3
X A− 3 P − T o p
(1 5 , D)
G R N 1
  5 V
C N 1 6
P H− 3 P − T o p
H u m i d i t y
S e n s o r
0 V
C N 1
P H− 4 P − T o p
H e a t   E x c h a n g e r  T h e r m i s t o r
R o o m T e m p .  T h e r m i s t o r
N M I
C N 6
1 2
P H− 1 2 P − T o p
R X
1 1
T X
1 0
T e r m i n a l   f o r   E E P R OM 
d a t a  w r i t i n g
M 2
R 7 0 1
R o o m T e m p .
T e s t
C 2
5 V
S D A
S C L
R E S
1 2 V
0 V
1 2 V
5 V
C N 7
R X
P A− 6 P − T o p
H− L I N K
C 9 0 1
T X
0 V
R 9 0 2
0 V
R E S I S T O R
C i r c u i t ' s  
C i r c u i t ' s  
C i r c u i t ' s  
N u m e r i c a l  
N u m e r i c a l  
N u m e r i c a l  
S y m b o l
S y m b o l
S y m b o l
V a l u e (Ω)
V a l u e (Ω)
V a l u e (Ω)
R 1 1 1
   2 7 K
±5% 1/1 0W
  C
R 3 0 5
    1 K ±5%
1/8W
  C
R 6 0 5
   1 0 K ±5% 1/1 6W
  C
  C
R 1 1 2
   3 0 K
±5% 1/1 6W
R 3 0 6
    1 K
±5%
1/8W
R 3 0 7
    1 K
±5%
1/8W
  C
R 6 1 0
   1 0 K ±5% 1/1 6W
  C
R 1 1 4
   7 5 0
±5%  1/8W
  C
R 3 0 8
    1 K ±5% 1/1 6W
R 6 1 1
    1 K ±5%
R 1 1 5
   5 6 0
±5%  1/8W
  C
R 6 1 2
   1 0 K ±5% 1/1 6W
R 1 1 6
R 4 0 1
   3 9 0 ±5%
1/8W
  C
R 1 1 7
   6 8 K
±5% 1/1 6W
  C
R 4 0 2
   3 9 0 ±5% 1/1 6W
  C
R 6 1 4
    1 K ±5%
R 1 1 8
   7 5 K
±2%
1/1 6W
  C
R 4 0 3
  5 . 1 K ±5% 1/1 6W
  C
R 6 3 1
    1 K
R 1 1 9
  6 . 8 K ±2% 1/1 6W
  C
R 4 0 4
  5 . 1 K ±5% 1/1 6W
  C
R 6 5 1
    1 K
  C
  C
R 6 5 2
   1 0 0
R 1 2 1
  0 . 5 6
±5% 1/4W
R 5 0 1
    1 M ±5% 1/1 6W
R 1 2 2
   1 0 0
±5% 1/1 6W
  C
R 5 0 2
     0
±5%
1/8W
  C
R 6 5 3
    1 K
  A
R 6 5 4
   1 0 K
R 1 2 3
   3 3 K
±5%
1/6W
R 1 2 4
   1 0 0
±5%
1/1 6W
  C
R 5 0 4
   1 0 K ±5% 1/1 6W
  C
R 6 5 5
   1 0 K
  C
R 6 5 6
    1 K
R 5 0 5
   1 0 K
±5% 1/1 6W
R 5 0 6
   1 0 K ±5% 1/1 6W
  C
R 6 5 7
   1 0 K
  C
R 1 2 7
  5 . 1 K
±5% 1/1 6W
  C
R 5 0 7
   1 0 K ±5% 1/1 6W
  C
R 5 0 8
   1 0 K ±5% 1/1 6W
R 1 3 2
   1 0 K ±5% 1/1 6W
  C
R 5 0 9
   1 0 K ±5% 1/1 6W
  C
R 1 3 3
   1 0 K ±5% 1/1 6W
  C
R 5 1 0
   1 0 K ±5%
1/6W
  A
R 7 0 1
    1 K ±5%
  C
R 5 1 1
   1 0 K ±5% 1/1 6W
R 2 1 5
  2 . 7 K ±5% 1/1 0W
  C
R 5 1 2
   1 0 K ±5% 1/1 6W
  C
R 2 1 6
    4 7
±5% 1/1 0W
  C
  C
R 2 1 7
    1 K
±5%
1/8W
R 2 1 9
  3 . 3 K
±5% 1/1 6W
  C
R 5 2 1
    1 M
±5% 1/1 6W
  C
R 7 4 4
   3 9 0
  C
  C
R 7 4 5
   3 0 0
R 3 0 1
1 2 . 7 K ±1% 1/1 6W
R 5 2 2
    1 K ±5% 1/1 6W
R 3 0 2
1 2 . 7 K ±1% 1/1 6W
  C
R 5 2 3
  3 0 0 K ±5% 1/1 6W
  C
R 7 4 6
   3 0 0
R 6 0 1
    1 K
±5%
1/6W
  A
R 3 0 3
   1 0 K
±5% 1/1 6W
  C
R 7 4 7
   3 9 0
R 3 0 4
  3 0 0 K
±1% 1/1 6W
  C
R 6 0 2
   1 0 K ±5% 1/1 6W
  C
I C P 2
3 5 V
Q 1 1 1
R 1 2 1
L 1 1 1
I C P 1
R 1 1 4
Q 1 1 3
Q 1 1 5
Q 1 1 2
R 1 1 5
I C 1 1 1
Q 1 1 6
5 V
Q 8 2 1
D 8 2 1
R 8 2 7
5 V
R 8 2 1
C 8 2 1
0 V
I C 8 0 1
5 V
R 8 0 5
L 8 0 1
Q 8 0 3
R 8 1 0
R 8 1 2
Q 8 0 2
R 8 0 6
C J 8 0 1
C 8 0 5
I C 8 0 1
Q 8 0 1
C 8 0 3
C 8 0 4
  0 V
  0 V
R 3 0 8
R 3 0 7
R 3 0 6
C 5 0 5
R 3 0 5
C 5 2 4
R 5 0 2
R 5 0 1
( 9 , G)
C 5 0 6
5 V
C 6 1 1
( 9 , D)
5 V
5 V
5 V
R 4 0 1
R 5 2 2
R 4 0 2
5 V
Q 5 2 1
   I C 5 2 1
8 7 6 5
  0 V
  0 V
   I C 4 0 1
  0 V
0 V
C i r c u i t ' s  
C i r c u i t ' s  
N u m e r i c a l  
N u m e r i c a l  
S y m b o l
S y m b o l
V a l u e (Ω)
V a l u e (Ω)
  C
  C
R 7 5 1
  2 . 7 K
±5% 1/1 6W
  C
R 9 0 2
    1 K ±5%
1/8W
  C
  C
  C
R 7 6 1
   1 0 K
±5%
1/1 6W
R 9 1 1
   5 6 0 ±5%
1/1 0W
  A
R 7 6 3
   1 0 K
±5%
1/1 6W
  C
R 9 1 2
    2 K ±5%
1/1 0W
  C
1/6W
  C
R 9 1 3
    2 K ±5%
1/8W
  C
  C
R 9 1 4
   1 . 2 K ±5% 1/8W
1/8W
  C
R 8 0 3
  1 2 0 K
±5%
1/1 6W
  C
R 9 1 5
   6 2 0 ±5%
1/1 0W
  C
  A
R 8 0 4
  1 2 0 K
±5%
1/1 6W
  C
±5%
1/6W
I C
R 8 0 5
  1 2 0 K ±5%
1/1 6W
  C
  C
R 8 0 6
  1 2 0 K
±5%
1/1 6W
  C
±5%
1/1 6W
C i r c u i t ' s  
M o d e l
±5%
1/8W
  C
R 8 0 7
  4 . 3 K
±5% 1/1 6W
  C
S y m b o l
  C
±5%
1/8W
I C 1 1 1
N J M 2 3 4 0 M
  C
±5%
1/1 6W
  C
R 8 1 0
   6 8 0
±5%
1/1 0W
  C
I C 1 2 1
B A 5 0 B C 0 T
  H
R 8 1 1
    2 K
±5% 1/1 6W
  C
±5%
1/1 6W
  C
±5%
1/8W
  C
R 8 1 2
    3 9 ±5%  1/8W
  C
I C 4 0 1
S 2 4 C S 0 4 A F J
  C
R 8 1 3
    3 9 ±5%  1/8W
  C
±5% 1/1 6W
  C
I C 5 0 1
H D 6 4 F 3 6 0 7 7
  C
  C
R 8 2 1
    1 K ±5%
1/8W
I C 5 2 1
S 8 0 9 4 2 C N M C
  C
R 8 2 2
   1 0 K ±1% 1/1 6W
  C
I C 7 1 1
U L N 2 0 0 3 A N S
  C
1/8W
  C
R 8 2 3
   1 0 K
±1%
1/1 6W
  C
I C 7 1 2
U L N 2 0 0 3 A N S
  C
R 8 2 4
8 . 2 5 K
±1%
1/1 6W
  C
I C 8 0 1
N J M 2 9 0 3 M
  C
R 8 2 5
   1 0 K
±1% 1/1 6W
  C
J u m p e r
R 8 2 6
    1 K
±5% 1/1 6W
  C
R 8 2 7
    3 K ±5% 1/1 6W
  C
C i r c u i t ' s  
U s e /
  C
R 8 2 8
   1 0 K ±5% 1/1 6W
  C
±5%
1/8W
S y m b o l
D o n t ' s  U s e
±5% 1/1 6W
  C
R 8 2 9
  5 . 1 K ±5% 1/1 6W
  C
U s e
J 1 0 1∼J 1 4 0
  C
R 8 3 0
    1 K ±5% 1/1 6W
  C
±5%
1/8W
  C
  C
±5%
1/8W
C J 8 0 1
U s e
  C
R 9 0 1
   1 0 K ±5%
1/8W
  C
1 2 V
D 1 2 1
I C 1 2 1
5 V
I N
O U T
G N G
0 V
  0 V
  0 V
( 4 , F )
R 6 5 4
6 4
6 3
6 2
6 1
6 0
5 9
5 8
5 7
5 6
5 5
5 4
5 3
5 2
5 1
5 0
4 9
R 6 5 5
F RO N T  P A N E L
C 6 0 1
  1
F A S T F E E D
4 8
A N
P 7 0
R 6 0 2
  2
T E S T
AU T O R E S T A R T
4 7
P 2 3
A N
  3
4 6
A V
O U T S I D E  T X D
C C
T X D
C 6 1 2
  4
X 2
O U T S I D E  R X D
4 5
R X D
  5
X 1
R EMO T E CO N T R O L  I D S E L E C T
4 4
P 2 0
R 6 1 0
  6
V C L
4 3
P 8 7
R 5 0 4
R E S E T
  7
4 2
P 8 6
R E S
R 5 0 5
  8
T E S T
H− L I N K
4 1
I C 5 0 1
P 8 5
I N DOO R F AN PWM OU T P U T
  9
V s s
4 0
A X − 7 X 3 0
F T I O D 1
C L O C K
1 0
H UM I D I T Y
3 9
O S C 2
F T I O C 1
O S C I L A T I O N 
R 5 0 6
1 1
C I R C U I T
O P E R A T I O N
3 8
P 6 5
O S C 1
1 2
3 7
V c c
P 6 4
C 6 5 1
1 3
W I R E L E S S  I N P U T
3 6
P 6 0
W K P 0
R 6 5 1
1 4
3 5
F M R O T A T I O N N O.  F B
N M I
W K P 1
C 5 0 7
1 5
φ 1
T I M E R
3 4
R 5 1 2
P 3 4
P 6 1
1 6
F I L T E R
3 3
φ 2
P 6 2
P 3 5
SW E E P 1
A U T O SW E E P 2
E E P R OM
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
Q 7 2 3
0 V
5 V
( 4 , F )
C a p a c i t o r
C i r c u i t ' s  
C i r c u i t ' s  
C i r c u i t ' s  
N u m e r i c a l  
N u m e r i c a l  
N u m e r i c a l  
S y m b o l
S y m b o l
S y m b o l
V a l u e ( F )
V a l u e ( F )
V a l u e ( F )
C 1 0 1
  0 . 2 2 μ 5 5 V F
  H
C 3 0 5
   0 . 1 μ
2 5 V
  C
  C
  D
  R
C 1 0 2
   1 8 0 μ
5 0 V
C 6 4 2
C 4 0 1
   0 . 1 μ 2 5 V
  C
  C
C 1 0 3
   4 7 0 p
6 3 0 V C
  C
  D
  R
C 1 0 5
   1 8 0 μ 5 0 V
C 5 0 1
   0 . 1 μ 2 5 V
  C
  C
C 6 5 1
   0 . 1 μ 2 5 V
  C
  C
  C
  C
C 1 1 1
   2 . 2 μ
1 0 V
C 5 0 2
   0 . 1 μ 2 5 V
C 1 1 2
  1 0 0 0 P 5 0 V
  C
  C
C 7 1 1
   0 . 1 μ 2 5 V
C 1 1 3
0 . 0 4 7 μ
2 5 V
  C
  C
C 7 1 2
   0 . 1 μ 2 5 V
C 1 1 4
   2 2 0 μ 2 5 V
  D
  R
C 5 0 5
   0 . 1 μ
2 5 V
  C
  C
C 1 1 5
C 5 0 6
   0 . 1 μ
2 5 V
  C
  C
C 7 4 1
   0 . 1 μ 2 5 V
C 5 0 7
   0 . 1 μ
2 5 V
  C
  C
C 1 1 6
C 7 4 2
C 7 4 3
  C
  C
C 5 2 1
   0 . 1 μ 2 5 V
C 7 4 4
C 5 2 2
  0 . 0 1 μ 5 0 V
  C
  C
C 7 4 5
  C
  C
  C
  C
C 1 2 1
   0 . 1 μ
2 5 V
C 5 2 3
   0 . 1 μ
2 5 V
C 1 2 2
   1 0 0 μ 1 0 V
  D
  R
C 5 2 4
   0 . 1 μ 2 5 V
  C
  C
C 7 5 1      1 μ 1 6 V
  C
  C
C 1 2 3
   0 . 1 μ 2 5 V
  C
  C
C 6 0 1
   0 . 1 μ
2 5 V
C 1 3 1
  0 . 2 2 μ
5 0 V
  C
  C
C 1 3 2
   0 . 1 μ
2 5 V
  C
  C
C 8 0 1
   1 5 0 P 5 0 V
C 8 0 2
  0 . 2 2 μ 5 0 V F
  C
  C
C 2 1 1
    4 7 μ
1 6 V
  D
  R
C 6 1 1
  1 0 0 0 P
5 0 V
C 8 0 3
   0 . 1 μ
  C
  C
C 6 1 2
   0 . 1 μ 2 5 V
  C
  C
C 8 0 4
C 2 1 2
   0 . 1 μ
2 5 V
  C
  C
C 2 1 3
   0 . 1 μ 2 5 V
C 8 0 5
C 3 0 1
   0 . 1 μ 2 5 V
  C
  C
C 6 2 1
  C
  C
C 3 0 2
   0 . 1 μ 2 5 V
C 8 2 1
  0 . 0 1 μ 5 0 V F
C 3 0 3
   0 . 1 μ
2 5 V
  C
  C
C 6 3 1
  1 0 0 0 P 5 0 V
  C
C 8 2 2
  1 0 0 0 P 5 0 V
C 3 0 4
   0 . 1 μ 2 5 V
  C
  C
C 8 2 3
0 . 0 4 7 μ 2 5 V
1 0
1 1
1 2
C N 1 0
X A− 6 P − T o p
I n d o o r   F a n
M o t o r
1 2 V
I C 7 1 1
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 0
I C 7 1 2
C N 5
1 0
1 1
1 2
1 3
1 4
1 5
1 6
  0 V
A u t o
R e s t a r t
O F F
Remote
control
ID
5 V
C Z − 5 P − T o p
  0 V
L 7 4 1
R 7 4 4
L 7 4 2
R 7 4 5
L 7 4 3
R 7 4 6
L 7 4 4
R 7 4 7
C N 1 2 A
1 2 V
  0 V
B u z z e r
B Z
P A− 3 P − T o p
Q 7 2 2
0 V
  0 V
D i o d e
C i r c u i t ' s  
C i r c u i t ' s  
N u m e r i c a l  
Model
S y m b o l
S y m b o l
V a l u e ( F )
C 8 2 4
  0 . 0 1 μ
5 0 V
  C
  C
D 1 0 1
D S M 3 MA 2
  C
C 8 2 5
   0 . 1 μ 2 5 V
  C
  C
  C
D 1 1 1
D 1 F S 6
D 1 2 1
1 S S 3 5 5
  C
C 9 0 1
  C
D 4 0 1
H N 1 D 0 3 F U
  C
  C
  C
  C
C 9 0 2
   0 . 1 μ 2 5 V
D 4 0 2
1 S S 3 5 5
  C
  C
  C
C 9 1 1
   1 0 0 μ 2 5 V
  D
  R
  C
  C
  C
  C
C 9 1 2
   0 . 1 μ 2 5 V
C 9 1 3
  1 0 0 0 p
5 0 V
  C
  C
D 8 2 1
1 S S 3 5 5
  C
C 9 1 4
  C
  C
Z e n e r  D i o d e
C 9 1 5
T r a n s i s t o r
C i r c u i t ' s  
Model
S y m b o l
C i r c u i t ' s  
M o d e l
S y m b o l
Z D 1 1 1
R D 6 . 2 U J N 2
  C
Q 1 1 1
2 S J 5 1 8
  C
  C
Z D 1 2 1
P T Z 2 0 A
  C
  C
Q 1 1 2
2 S C 5 2 0 9 H
  C
Z D 1 3 1
R L Z 6 . 8 A
  C
Q 1 1 3
2 S C 5 2 0 9 H
  C
  C
Z D 2 1 1
R D 5 . 6 U J N 2
B u z z e r
  C
Q 1 1 5
2 S A 1 1 6 2 Y
C i r c u i t ' s  
Model
S y m b o l
Q 1 1 6
D T C 1 1 4 E E
  C
  C
  C
B Z
P K M 1 3 E P Y
  H
S e n s o r  U n i t
  H
Q 2 1 2
2 S C 2 4 6 2 L C
  C
2 5 V
  C
  C
Q 5 2 1
D T C 1 1 4 E E
  C
C i r c u i t ' s  
Model
S y m b o l
  C
Q 7 2 2
D T C 1 1 4 E E
  C
Q 7 2 3
D T C 1 1 4 E E
I R R
G P 1 U X 5 1 1 R K
  H
  C
Q 8 0 1
D T C 1 1 4 E E
O s c i l l a t o r
Q 8 0 2
D T A 1 1 4 E E
  C
  R
C i r c u i t ' s  
Model
Frequency
  C
  C
  C
Q 8 0 3
2 S C 3 4 4 1 E
S y m b o l
Q 8 2 1
2 S C 5 3 8 3
  C
  C
  C
  R
R E S 1
C S T L S 1 0M0 G 5 3
1 0 MH z
1 0
1 1
1 2
1 3
1 4
1 5
1 6
N o t e
  1 . T y p e   o f  C a p a c i t o r  
C N 4
P A− 1 0 P − T o p
  F ...... F i l m C a p a c i t o r
 C......C e r a m i c  C a p a c i t o r
 D...... E l e c t r o l y t i c  C a p a c i t o r
A u t o   s w e e p  
M o t o r 2
A u t o   s w e e p  
M o t o r 1
P H− 5 P − T o p
Suction Deflector
Motor
5 V
( 3 , C)
1 2 V
C N 9
P A− 4 P − T o p
P Q 9 1 1
O V
L 9 1 2
1 2 V
Wired remote control
R E C
R 9 1 5
S E N D
0 V
P Q 9 1 2
0 V
0 V
C N 1 1 A
C N 1 1 B
I n d i c a t i n g  
C Z − 5 P − T o p
P . W. B.
C N 1 2 B
L i g h t
C Z − 3 P − T o p
C Z − 3 P − T o p
T e m p o r a r y
R e c e i v i n g
S w i t c h
P . W. B.
P . W. B.
Q 2 1 2
SW 1
R 2 1 6
T e m p o r a r y  SW
R 2 1 5
Z D 2 1 1
C N 1 3 B
C N 1 3 A
D D
Light receiving
Z H− 3 P − S i d e
unit
R 2 1 7
I R R
O U T
G N D
C o i l
C O N N E C T E R
C i r c u i t ' s  
N u m e r i c a l  
C i r c u i t ' s  
M o d e l
S y m b o l
V a l u e (H)
S y m b o l
L 1 0 1
  8 2 μ
1 . 3 A
  C
C N 1
P H− 4 P − T o p
  H
  C
C N 3
X A− 3 P − T o p
  H
L 1 1 1
5 6 0 μ
0 . 4 A
L 5 0 1
1 6 0 8 C J
 −
  C
C N 4
P A− 1 0 P − T o p
  H
  C
C N 5
P H− 5 P − T o p
  H
L 7 4 1
1 6 0 8 C J
 −
L 7 4 2
1 6 0 8 C J
 −
  C
C N 6
P H− 1 2 P − T o p
  H
  C
C N 7
P A− 6 P − T o p
  H
L 7 4 3
1 6 0 8 C J
 −
L 7 4 4
1 6 0 8 C J
 −
  C
  C
C N 9
P A− 4 P − T o p
  H
L 7 5 1
1 6 0 8 C J
 −
L 8 0 1
  
X A− 6 P − T o p
  H
C N 1 0
L 9 1 1
B L 0 1 R N 1
   7 A
  A
C N 1 1 A
C Z − 5 P − T o p
  H
L 9 1 2
B L 0 1 R N 1
   7 A
  A
C N 1 1 B
C Z − 5 P − T o p
  H
P h o t o  C o u p l e r
  H
C N 1 2 A
C Z − 3 P − T o p
C i r c u i t ' s  
C Z − 3 P − T o p
  H
C N 1 2 B
M o d e l
S y m b o l
C N 1 3 A
P A− 3 P − T o p
  H
  H
P Q 9 1 1
T L P 4 2 1 (B L)
Z H− 3 P − S i d e
C N 1 3 B
  H
P Q 9 1 2
T L P 4 2 1 (B L)
  H
L E D
P H− 3 P − T o p
C N 1 6
  H
C i r c u i t ' s  
S w i t c h
M o d e l
C o l o r
S y m b o l
C i r c u i t ' s  
  H
M o d e l
L D 2 0 1
S E L 6 4 1 4 E
G r e e n
S y m b o l
L D 2 0 2
S E L 6 9 1 4 A
Y e l l o w
  H
K S M 0 6 3 3 B
  H
SW 1
  H
L D 2 0 3
S E L 6 8 1 4 A
O r a n g e
O v e r  C u r r e n t   P r o t e c t e r
C i r c u i t ' s  
R a t i n g  
M o d e l
S y m b o l
C u r r e n t
I C P 1
C C P 2 E − 2 0
0 . 8 A
  C
I C P 2
C C P 2 E − 5 0
2 . 0 A
  C
1 3
1 4
1 5
– 45 –

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