Circuit Diagram - Hitachi RAS-EH18RHLAE Service Manual

CIRCUIT DIAGRAM

Remote Controller
LCD1
"
SEG12 1
COMO
"
SEG11 2
COM1
SEG10 3 , i;J]ttf 1
COM2
"
SEG9 4 R1,R2, R3,R4 7'J,fJ1.�jil;� '\. t)J:@'2
COM3
"
SEG8 5 IYt;/J:@'3
SEGO
SEG7 6 J1 DRr)Jlif 1 / 1Yt;/JW 4
SEG1
"
7 J2--uRt]W2 / ',PWM
SEG6
I"- SEG2
SEGS 8 J3- uRtJJl"l'3 / r-. ROW6
I',
SEG3
SEG4 9 J4= R1;/J1'1'4 / r-. ROWS
SEG4
"
SEG3 10 ,ROW4
I"- SEGS
SEG2 11 1'\.ROW3
-
SEG6
SEG1 12 iiss l'\.ROW2
I"- " SEG7
SEGO 13 ,Row,
I, SEG8
'
COM3 14 ,RESET
SEG9
COM2 15
" SEG10
COM1 16
I"- SEG11
--
COMO 17 BT1
I',
SEG12
LCD-17
I
SW1
2 1
r--,
LuMPER
--c10
Vss
I 104P
Vss
0
/ 52
51
u u
N 0 M
----­ ----- 8
-'
Tempup
� 5 Timer
� . <?----7 � �9"-7
TP12
I
TP130-
----- -----
54 55
TP<i'4
0-
�
f-----9 _,� �
Mode Tempdown
I
----- -----
57
58
f-----0
�owe�
�ff
----- -----
510 511
� �
On �eepl
----- -----
513 514
�
�ffi l �m21
-----
516
L----o
�ffl 4
N
��������� ���
:::�O\OOr-....\01.t")'q"MN.-
V'IV'IV'IV'IV'IV'IV'IV'IV'IV'IV'I
VMN.-00\00r--.\OL.f".IVM
NNNNN.-.-.-
25
PE2/SEG10
26
PE1/SEG9
27
PE0/SEG8
28
PD7/SEG7/PTPB_1
29
PD6/SEG6/PTP _ 1
30
PDS/SEGS/PTPB_0
31
PD4/SEG4/PTP _0
32
PD3/SEG3/PTCK
33
PD2/SEG2/CTP _2
34
PD1/SEG1/CTCK
35
PD0/SEG0/INT1
36
PA7/RES
Rl
10R
TPB
t)]llf _9
53 TP27
-----
C
---------,,T;;; P 30
TP29
On/OFF
Rl0
9 ROW1 /
I
-----
�
56
XT
. C>-;--i TP31
D r-
Fan5peed
.,___ ---1:
9 ROW2 /
I
c, --
32.768K
-----
lS�
59
I
I
TP34 Vss
ROW3 /
Jxt,r;'i]
9
-----
512
I
TP38
ROW4 /
RF
9
TP39
-----
R6
515
PWM
9
l00R
TP15
R14
V
ffi 3
ROWS / 33K
ll
9
TP16
ROW6 /
9
1(1
HT69F
12 SEGO
PF7/SEG23
11 COM3 /
COM3/SEG24
10 COM2 _/
COM2
9 COM1 /
COM1
8 COMO_/
COMO
7
PC2/C2
6
PC1/C1
5 ITT1
__lit!
PC0N2
4
Vl
3
VMAX
� >-0
TPS TP6
VLCD �
7 XT1
PB3/XT2 , o4,f , � , 1
TD
� ---I--IJU_+---1-.!.!..:. ----J
0 (6 C7
cs
Vss
i1
(9
_J_
T104p
'-+-----.
�
/
f
B
� �
9
BTO 47M/25V
-�
�El
D2
'IIIIIP'�
I
--,. "
T, C2
LED
� 1SpF
�
TP32 Vss
R7 0-
2R0
TP35
Q 2
0-
u
8050
TP40
(V
4�
B
�
j
TP42
9
LJ.J
--
Vss
OR
�
JP2
VSS VS5
----=-=-
OR
OR
�
OR
�
/
OR
�
B _T _!
I
RS
10� 100K
TP2 N4148
TP D1
A R9
/
RESET
T
V
517
Reset
IUK
MARKl
MARK2 MARK3
DATAl SHEEN1
MARK4
•
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